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Journal articles on the topic 'Systolic blood volume'

Author: Grafiati

Published: 4 May 2022

Last updated: 30 July 2025

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1

Bauer, K., O. Linderkamp, and H. T. Versmold. "Systolic blood pressure and blood volume in preterm infants." Archives of Disease in Childhood 69, no. 5 Spec No (1993): 521–22. http://dx.doi.org/10.1136/adc.69.5_spec_no.521.

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2

Kim, Jun Sung, Subin Lee, Seung Wan Suh, et al. "Association of Low Blood Pressure with White Matter Hyperintensities in Elderly Individuals with Controlled Hypertension." Journal of Stroke 22, no. 1 (2020): 99–107. http://dx.doi.org/10.5853/jos.2019.01844.

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Background and Purpose Both hypertension and hypotension increase cerebral white matter hyperintensities. However, the effects of hypotension in individuals with treated hypertension are unknown. We analyzed the association of low blood pressure with the location and amount of white matter hyperintensities between elderly individuals with controlled hypertension and those without hypertension.Methods We enrolled 505 community-dwelling, cognitively normal elderly individuals from the participants of the Korean Longitudinal Study on Cognitive Aging and Dementia. We measured blood pressure three

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Dumitrescu, Silviu Ionel, Ileana Hantulie, Raluca Popescu, et al. "BLOOD PRESSURE VARIABILITY AND VENTRICULO-ARTERIAL COUPLING." Journal of Hypertension 42, Suppl 1 (2024): e243. http://dx.doi.org/10.1097/01.hjh.0001021972.17700.94.

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Objective: To investigate the influence of blood pressure variability on the parameters of arterial load and ventriculo-arterial coupling in apparently healthy individuals. Design and method: We screened 193 persons in a primary prevention program recording risk factors, blood pressure and ultrasound data: LV systolic/diastolic dimensions and volumes, septal/posterior wall thickness (SWT/PWT), left ventricle mass (LVM), ejection fraction, Doppler parameters, brachial artery Flow Mediated Dilatation (FMD), carotid artery Intima-Media Thickness (IMT). We calculated: systemic arterial compliance

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Eeftinck Schattenkerk, Daan W., Jacqueline van Gorp, Liffert Vogt, Ron JG Peters, and Bert-Jan H. van den Born. "Isolated systolic hypertension of the young and its association with central blood pressure in a large multi-ethnic population. The HELIUS study." European Journal of Preventive Cardiology 25, no. 13 (2018): 1351–59. http://dx.doi.org/10.1177/2047487318777430.

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Background Isolated systolic hypertension (ISH) of the young has been associated with both normal and increased cardiovascular risk, which has been attributed to differences in central systolic blood pressure and arterial stiffness. Methods We assessed the prevalence of ISH of the young and compared differences in central systolic blood pressure and arterial stiffness between ISH and other hypertensive phenotypes in a multi-ethnic population of 3744 subjects (44% men), aged <40 years, participating in the HELIUS study. Results The overall prevalence of ISH was 2.7% (5.2% in men and 1.0% in

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Nelson, Michael D., Mark J. Haykowsky, Stewart R. Petersen, Darren S. DeLorey, June Cheng-Baron, and Richard B. Thompson. "Increased left ventricular twist, untwisting rates, and suction maintain global diastolic function during passive heat stress in humans." American Journal of Physiology-Heart and Circulatory Physiology 298, no. 3 (2010): H930—H937. http://dx.doi.org/10.1152/ajpheart.00987.2009.

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Left ventricular (LV) systolic function increases with passive heat stress (HS); however, less is known about diastolic function. Eight healthy subjects (24.0 ± 2.0 yr of age) underwent whole body passive heating ∼1°C above baseline (BL). Cardiac magnetic resonance imaging was used to measure biventricular volumes, function, filling velocities, volumetric flow rates, and LV twist and strain at BL and after 45 min of HS. Passive heating reduced left atrial volume (−17.6 ± 11.7 ml, P < 0.05), right and LV end-diastolic volumes (−22.7 ± 11.0 and −25.7 ± 24.9 ml, respectively; P < 0.05), and

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SR, Mittal. "Blood Pressure Response to Treadmill Stress TestingInterpretation and Critical Appraisal." Open Access Journal of Cardiology 7, no. 1 (2023): 1–18. http://dx.doi.org/10.23880/oajc-16000182.

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A progressive and sustained decrease in systolic blood pressure on the continuation of exercise suggests severe left ventricular dysfunction irrespective of the cause. A transient decrease in systolic blood pressure followed by a normal increase in the continuation of exercise does not have any clinical significance. Failure of systolic blood pressure to increase commensurate to an increase in workload suggests the failure of adequate increase in left ventricular stroke volume with increasing workload. At present there is no consensus about the definition and significance of the exaggerated in

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Ledsome, J. R., and K. A. King. "Atrial dynamics and release of atrial natriuretic factor in vivo." Canadian Journal of Physiology and Pharmacology 69, no. 10 (1991): 1507–13. http://dx.doi.org/10.1139/y91-226.

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In anaesthetized rabbits blood volume was altered by infusion and withdrawal of donor blood over the range of +60 to −40% of the blood volume. Right and left atrial pressures were measured and it was shown that sonomicrometry allowed adequate measurement of phasic changes in atrial dimensions. Plasma immunoreactive atrial natriuretic peptide concentration changed in a nonlinear fashion with changes in blood volume, and was linearly related to both peak systolic and peak diastolic right and left atrial wall stress. It was not possible to make the distinction between distension (diastolic stress

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Plotnick, G. D., L. C. Becker, M. L. Fisher, et al. "Use of the Frank-Starling mechanism during submaximal versus maximal upright exercise." American Journal of Physiology-Heart and Circulatory Physiology 251, no. 6 (1986): H1101—H1105. http://dx.doi.org/10.1152/ajpheart.1986.251.6.h1101.

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To evaluate the extent to which the Frank-Starling mechanism is utilized during successive stages of vigorous upright exercise, absolute left ventricular end-diastolic volume and ejection fraction were determined by gated blood pool scintigraphy at rest and during multilevel maximal upright bicycle exercise in 30 normal males aged 26-50 yr, who were able to exercise to 125 W or greater. Left ventricular end-systolic volume, stroke volume, and cardiac output were calculated at rest and during each successive 3-min stage of exercise [25, 50, 75, 100, and 125–225 W (peak)]. During early exercise

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9

Colloby, Sean J., Akshya Vasudev, John T. O'Brien, Michael J. Firbank, Steve W. Parry, and Alan J. Thomas. "Relationship of orthostatic blood pressure to white matter hyperintensities and subcortical volumes in late-life depression." British Journal of Psychiatry 199, no. 5 (2011): 404–10. http://dx.doi.org/10.1192/bjp.bp.110.090423.

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BackgroundStructural brain abnormalities are associated with late-life major depression, with numerous studies reporting increased white matter hyperintensities (WMH) and reduced cortical/subcortical grey matter volumes. There is strong evidence linking vascular disease to WMH, but limited evidence on its association with subcortical volumes.AimsTo investigate the relationship of orthostatic blood pressure changes to WMH and subcortical grey matter volumes in late-life depression.MethodThirty-eight people with depression and a similarly aged comparison group (n = 30) underwent fluid attenuated

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10

Gouse Bin Mohammad Shaik and Dr. Manila Jain. "A case-control study of hypertension and associated risk factor on kidney Volume." IAR Journal of Medicine and Surgery Research 2, no. 4 (2021): 28–33. http://dx.doi.org/10.47310/iarjmsr.2021.v02i04.07.

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Introduction: Hypertension (or HTN) or high blood pressure is defined as abnormally high arterial blood pressure. According to the Joint National Committee 8 (JNC8), normal blood pressure is a systolic BP < 120 mmHg and diastolic BP < 80 mm Hg. Hypertension is defined as systolic BP level of ≥140 mmHg and/or diastolic BP level ≥ 90 mmHg. Material and Methods: This is a prospective, descriptive, cross sectional and observational study conducted at Department of Physiology, General Medicine and Radiology, Index Medical College, Hospital and Research center Indore. Period of the study from

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Her, Charles, Yong Han Kim, and Sang Yoon Jeon. "Change in pulmonary blood volume changes pulmonary artery systolic storage." Journal of Surgical Research 185, no. 1 (2013): 310–18. http://dx.doi.org/10.1016/j.jss.2013.05.055.

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12

Greenway, Clive V., and W. Wayne Lautt. "Blood volume, the venous system, preload, and cardiac output." Canadian Journal of Physiology and Pharmacology 64, no. 4 (1986): 383–87. http://dx.doi.org/10.1139/y86-062.

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Cardiac output is determined by heart rate, by contractility (maximum systolic elastance, Emax) and afterload, and by diastolic ventricular compliance and preload. These relationships are illustrated using the pressure–volume loop. Diastolic compliance and Emax place limits determined by the heart within which the pressure–volume loop must lie. End-diastolic and end-systolic pressures and hence the exact position of the loop within these limits are determined by the peripheral circulation. In the presence of minimal sympathetic tone, some 60% of total blood volume is hemodynamically inactive a

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Bouma, P., P. Sipkema, and N. Westerhof. "Coronary arterial inflow impediment during systole is little affected by capacitive effects." American Journal of Physiology-Heart and Circulatory Physiology 264, no. 3 (1993): H715—H721. http://dx.doi.org/10.1152/ajpheart.1993.264.3.h715.

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During cardiac contraction coronary arterial inflow is impeded, whereas venous flow is augmented. These effects are assumed to be caused by diameter reductions of intramyocardial blood vessels. The reduction in vascular diameter (and thus vascular volume) during contraction increases coronary resistance and/or decreases back pressure so that flow decreases and the rate of change of volume results in a capacitive flow. The aim of this study was to estimate the contribution of capacitive flow to total coronary inflow impediment. Isolated blood-perfused (100 mmHg and constant), maximally vasodila

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Støylen, Asbjørn, Håvard Dalen, and Harald Edvard Molmen. "Left ventricular longitudinal shortening: relation to stroke volume and ejection fraction in ageing, blood pressure, body size and gender in the HUNT3 study." Open Heart 7, no. 2 (2020): e001243. http://dx.doi.org/10.1136/openhrt-2020-001243.

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BackgroundAims of this cross-sectional study were to assess: the relative contribution of left ventricular (LV) systolic long-axis shortening (mean mitral annular plane systolic excursion, MAPSE) to stroke volume (SV), the mechanisms for preserved ejection fraction (EF) despite reduced MAPSE, the age dependency of myocardial volume and myocardial systolic compression.MethodsLinear dimensions and longitudinal and cross-sectional M-modes were acquired in 1266 individuals without history of heart disease, diabetes or known hypertension from the third wave of the Nord-Trøndelag Health Study. Measu

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Fredriksson, Alexandru G., Jakub Zajac, Jonatan Eriksson, et al. "4-D blood flow in the human right ventricle." American Journal of Physiology-Heart and Circulatory Physiology 301, no. 6 (2011): H2344—H2350. http://dx.doi.org/10.1152/ajpheart.00622.2011.

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Right ventricular (RV) function is a powerful prognostic indicator in many forms of heart disease, but its assessment remains challenging and inexact. RV dysfunction may alter the normal patterns of RV blood flow, but those patterns have been incompletely characterized. We hypothesized that, based on anatomic differences, the proportions and energetics of RV flow components would differ from those identified in the left ventricle (LV) and that the portion of the RV inflow passing directly to outflow ( Direct Flow) would be prepared for effective systolic ejection as a result of preserved kinet

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Taneja, Indu, Christopher Moran, Marvin S. Medow, June L. Glover, Leslie D. Montgomery, and Julian M. Stewart. "Differential effects of lower body negative pressure and upright tilt on splanchnic blood volume." American Journal of Physiology-Heart and Circulatory Physiology 292, no. 3 (2007): H1420—H1426. http://dx.doi.org/10.1152/ajpheart.01096.2006.

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Upright posture and lower body negative pressure (LBNP) both induce reductions in central blood volume. However, regional circulatory responses to postural changes and LBNP may differ. Therefore, we studied regional blood flow and blood volume changes in 10 healthy subjects undergoing graded lower-body negative pressure (−10 to −50 mmHg) and 8 subjects undergoing incremental head-up tilt (HUT; 20°, 40°, and 70°) on separate days. We continuously measured blood pressure (BP), heart rate, and regional blood volumes and blood flows in the thoracic, splanchnic, pelvic, and leg segments by impedanc

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17

Gircys, Rolandas, Agnius Liutkevicius, Arunas Vrubliauskas, and Egidijus Kazanavicius. "Blood Pressure Estimation Accoording to Photoplethysmographic Signal Steepness." Information Technology And Control 44, no. 4 (2015): 443–50. http://dx.doi.org/10.5755/j01.itc.44.4.12562.

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Abstract. The purpose of this paper is to prove the assumption that there is a correlation between the systolic blood pressure and the photoplethysmographic signal steepness. A method for indirect systolic blood pressure estimation based on photoplethysmographic signal steepness is proposed in this paper. Method: It is proved that based on Hooke’s law, the steepness of pressure and volume (diameter) of pulse waves differ by a constant. The coefficient for calculating arterial blood pressure when volume pulse wave steepness is known is presented in this paper. The Windkessel model is selected f

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Maftukhaturrizqoh, Olivia, Agung Dwi Wijaya, Iftita Ida Sofia, and Mohtar Yunianto. "Fluid continuity equation simulation: Monitoring fluid reservoir volume in the heart over time." Science, Technology and Communication Journal 4, no. 2 (2024): 43–46. http://dx.doi.org/10.59190/stc.v4i2.259.

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Fluid flowing in a cross-section of a channel follows the law of continuity, namely the mass rate of fluid entering will be the same as the mass rate of fluid leaving. One of the applications of fluid flow is in human blood flow. Blood flow is controlled by the heart which functions to pump blood to and from the heart. The flow of blood entering and leaving the heart is determined by the cross-sectional area of the channel and the speed of blood flow through the heart. The speed of blood flow in the heart consists of two speeds, namely the systolic speed when blood leaves the heart and the dia

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Cheng, Chun-Yu, Hao-Min Cheng, Shih-Pin Chen, et al. "White matter hyperintensities in migraine: Clinical significance and central pulsatile hemodynamic correlates." Cephalalgia 38, no. 7 (2017): 1225–36. http://dx.doi.org/10.1177/0333102417728751.

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Background The role of central pulsatile hemodynamics in the pathogenesis of white matter hyperintensities in migraine patients has not been clarified. Methods Sixty patients with migraine (20–50 years old; women, 68%) without overt vascular risk factors and 30 demographically-matched healthy controls were recruited prospectively. Cerebral white matter hyperintensities volume was determined by T1-weighted magnetic resonance imaging with CUBE-fluid-attenuated-inversion-recovery sequences. Central systolic blood pressure, carotid-femoral pulse wave velocity, and carotid augmentation index were m

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Speck, Nicole Edith, Michal Michalak, Kathrin Dreier, Doris Babst, Alessia Marisa Lardi, and Jian Farhadi. "Effect of the Red Bull Energy Drink on Perfusion-Related Variables in Women Undergoing Microsurgical Breast Reconstruction: Protocol and Analysis Plan for a Prospective, Multicenter Randomized Controlled Trial." JMIR Research Protocols 12 (May 9, 2023): e38487. http://dx.doi.org/10.2196/38487.

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Background Maintaining a sufficiently high systolic blood pressure is essential for free flap perfusion after microsurgical breast reconstruction. Yet, many women undergoing these procedures have low postoperative systolic blood pressure. Intravenous volume administration or vasopressors may be needed to maintain systolic blood pressure above a predefined threshold. However, excessive volume administration may lead to volume overload and flap stasis, and the postoperative use of vasopressors may be limited depending on institutional standards. Additional nonpharmacological measures to raise bl

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Waters, Emily A., Andrew W. Bowman, and Sándor J. Kovács. "MRI-determined left ventricular “crescent effect”: a consequence of the slight deviation of contents of the pericardial sack from the constant-volume state." American Journal of Physiology-Heart and Circulatory Physiology 288, no. 2 (2005): H848—H853. http://dx.doi.org/10.1152/ajpheart.00744.2004.

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During one cardiac cycle, the volume encompassed by the pericardial sack in healthy subjects remains nearly constant, with a transient ±5% decrease in volume at end systole. This “constant-volume” attribute defines a constraint that the longitudinal versus radial pericardial contour dimension relationship must obey. Using cardiac MRI, we determined the extent to which the constant-volume attribute is valid from four-chamber slices (two-dimensional) compared with three-dimensional volumetric data. We also compared the relative percentage of longitudinal versus radial (short-axis) change in cros

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Preciado, Priscila, Hanjie Zhang, Stephan Thijssen, and Peter Kotanko. "FP517INTRADIALYTIC RELATIVE BLOOD VOLUME AND ITS RELATIONSHIP WITH SYSTOLIC BLOOD PRESSURE AND INTRADIALYTIC HYPOTENSION." Nephrology Dialysis Transplantation 33, suppl_1 (2018): i212—i213. http://dx.doi.org/10.1093/ndt/gfy104.fp517.

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Tjahajawati, Sri, Anggun Rafisa, Hening Tjaturina Pramesti, and Cucu Zubaedah. "Taste Threshold, Salivary Secretion, Blood Pressure and Blood Glucose in Smoking and Non-Smoking Women." International Journal of Medical Science and Clinical invention 6, no. 07 (2019): 4518–21. http://dx.doi.org/10.18535/ijmsci/v6i7.02.

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Background: WHO reported that 2.7% of women are active smokers in Indonesia. Smoking can decrease taste sensitivity. The objective of this study was to obtain the taste threshold, salivary secretion, blood pressure and blood glucose in smoking and non-smoking women. Materials and Methods: Subjects were 15 smoking women and 38 non-smoking women. The sweet and salt taste threshold was measured by dripping a solution of NaCl and glucose gradually starting from the lowest to the highest concentration. Blood glucose levels were measured using a glucometer device. Blood pressure was obtained b

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Mathew, Oommen P. "Effects of transient intrathoracic pressure changes (hiccups) on systemic arterial pressure." Journal of Applied Physiology 83, no. 2 (1997): 371–75. http://dx.doi.org/10.1152/jappl.1997.83.2.371.

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Mathew, Oommen P. Effects of transient intrathoracic pressure changes (hiccups) on systemic arterial pressure. J. Appl. Physiol. 83(2): 371–375, 1997.—The purpose of the study was to determine the effect of transient changes in intrathoracic pressure on systemic arterial pressure by utilizing hiccups as a tool. Values of systolic and diastolic pressures before, during, and after hiccups were determined in 10 intubated preterm infants. Early-systolic hiccups decreased systolic blood pressure significantly ( P < 0.05) compared with control (39.38 ± 2.72 vs. 46.46 ± 3.41 mmHg) and posthiccups

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Tavernier, Benoit, Olivier Makhotine, Gilles Lebuffe, Jacques Dupont, and Philippe Scherpereel. "Systolic Pressure Variation as a Guide to Fluid Therapy in Patients with Sepsis-induced Hypotension." Anesthesiology 89, no. 6 (1998): 1313–21. http://dx.doi.org/10.1097/00000542-199812000-00007.

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Background Monitoring left ventricular preload is critical to achieve adequate fluid resuscitation in patients with hypotension and sepsis. This prospective study tested the correlation of the pulmonary artery occlusion pressure, the left ventricular end-diastolic area index measured by transesophageal echocardiography, the arterial systolic pressure variation (the difference between maximal and minimal systolic blood pressure values during one mechanical breath), and its delta down (dDown) component (= apneic - minimum systolic blood pressure) with the response of cardiac output to volume exp

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Millasseau, S. C., X. Chen, S. J. Patel, S. R. Redwood, and P. J. Chowienczyk. "ESTIMATION OF CENTRAL SYSTOLIC BLOOD PRESSURE FROM THE DIGITAL VOLUME PULSE." Journal of Hypertension 22, Suppl. 1 (2004): S167. http://dx.doi.org/10.1097/00004872-200402001-00712.

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Hagberg, J. M., S. J. Montain, and W. H. Martin. "Blood pressure and hemodynamic responses after exercise in older hypertensives." Journal of Applied Physiology 63, no. 1 (1987): 270–76. http://dx.doi.org/10.1152/jappl.1987.63.1.270.

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Recently, systolic and diastolic blood pressure have been reported to be significantly lower for several hours after exercise than when measured at rest before exercise in individuals with essential hypertension. We sought to determine the hemodynamic mechanism underlying this reduction in blood pressure. Twenty-four men and women 60–69 yr of age with persistent essential hypertension completed one of the following protocols: exercise at 50% of maximum O2 consumption (VO2 max) followed by 1 h of recovery, exercise at 70% of VO2 max followed by 3 h of recovery, or a 4-h control study. Systolic

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Borysenko, I. V., Cretu Marian, and Z. L. Kozina. "Influence of body length on orthostatic test parameters of student-athletes." Health, sport, rehabilitation 6, no. 4 (2020): 47–57. http://dx.doi.org/10.34142/hsr.2020.06.04.05.

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Aim: to identify the influence of body length on the indicators of vegetative-vascular regulation of student-athletes. Material and methods. The study involved 42 second-year students who play sports at the amateur level (qualification level - 2-3 sports degree). The following research methods were used in the work: method of analysis of literary sources; method of determining body length; orthostatic test method; method of determining stroke volume and minute blood volume. Results. It was found that the increase in systolic blood pressure during the transition from horizontal to v

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Gay, R. G., T. E. Raya, L. D. Lancaster, R. W. Lee, E. Morkin, and S. Goldman. "Effects of thyroid state on venous compliance and left ventricular performance in rats." American Journal of Physiology-Heart and Circulatory Physiology 254, no. 1 (1988): H81—H88. http://dx.doi.org/10.1152/ajpheart.1988.254.1.h81.

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The cardiovascular system of hypothyroid, normal, and hyperthyroid rats was studied by evaluation of the peripheral venous circulation and left ventricular (LV) systolic and diastolic performance in rats. Cardiac index (CI) and CI during a volume load were measured in open-chest rats. When compared with control, hypothyroid rats showed a decrease in heart rate, aortic pressure, LV systolic pressure, first derivative for LV pressure (LV dP/dt), CI, and CI during a volume load. LV pressure-volume relation was shifted to the right, muscle stiffness was unchanged, and LV relaxation was prolonged.

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Hasimun, Patonah, Hasballah Zakaria, Elis Susilawati, and Jeany Dwiyulia Wardiono. "ANTIHYPERTENSIVE ACTIVITY ETHANOLIC EXTRACT OF BULB ELEUTHERINE AMERICANA MERR ON FRUCTOSE-INDUCED HYPERTENSION RATS." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 8 (2017): 25. http://dx.doi.org/10.22159/ijpps.2017v9i8.15383.

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Objective: This study aimed to evaluate ethanolic extract of bulb of Eleutherine americana Merr as antihypertensive.Methods: This study examined the effect of ethanol extract of bulb of Eleutherine americana Merr on urine volume, blood pressure, and electrocardiogram (ECG) profile. Diuretic activity was evaluated by the Lipschitz method. Furosemide (3.6 mg/kg) used as standard drug. Animal rats model of hypertension were induced by fructose 66% in the diet for 21 d. Captopril (2.5 mg/kg) used as standard antihypertension. Parameters measured were urine volume for 24 h, systolic and diastolic b

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Yarosh, A. M., I. A. Batura, V. V. Tonkovtseva, et al. "Impact of winter savory essential oil on the functioning of cardiovascular system of the elderly." Plant Biology and Horticulture: theory, innovation, no. 151 (December 30, 2019): 86–93. http://dx.doi.org/10.36305/2019-2-151-86-93.

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Objective. To study the effects of winter savory essential oil on the functioning of cardiovascular system of the elderly. Materials and methods. The study includes 97 women of older age with increased systolic blood pressure, which were divided into control (session of relaxation therapy only), and experimental (session of relaxation therapy combined with aromatherapy of winter savory essential oil) groups. Before and after the sessions, systolic and diastolic blood pressure, heart rate of the testees were measured and the following indices were determined: pulse blood pressure, minute blood

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Burkhoff, D., S. Sugiura, D. T. Yue, and K. Sagawa. "Contractility-dependent curvilinearity of end-systolic pressure-volume relations." American Journal of Physiology-Heart and Circulatory Physiology 252, no. 6 (1987): H1218—H1227. http://dx.doi.org/10.1152/ajpheart.1987.252.6.h1218.

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The shape of the end-systolic tension-length relationship (ESTLR) changes when contractile state is changed, whereas the end-systolic pressure-volume relationship (ESPVR) remains linear despite changes in contractility. To investigate this disparity, the ESPVR was determined with contractility altered extensively by dobutamine, BAY K 8644, nifedipine, lowering coronary blood flow, and the introduction of extrasystolic and postextrasystolic stimulations. The ESPVRs were fitted by nonlinear regression analysis to the parabolic equation Pes = aVes2 + bVes + c, where Pes is end-systolic pressure,

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Lentini, A. C., R. S. McKelvie, N. McCartney, C. W. Tomlinson, and J. D. MacDougall. "Left ventricular response in healthy young men during heavy-intensity weight-lifting exercise." Journal of Applied Physiology 75, no. 6 (1993): 2703–10. http://dx.doi.org/10.1152/jappl.1993.75.6.2703.

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We examined cardiac volumes (using echocardiography), intra-arterial blood pressure (BP), and intrathoracic pressure (ITP) in healthy males performing leg press exercise to failure at 95% of their maximum dynamic strength. Compared with preexercise, during the lifting phase of exercise, end-diastolic volume (EDV; 147 +/- 8 to 103 +/- 7 ml) and end-systolic volume (ESV; 54 +/- 5 to 27 +/- 4 ml) decreased (P < 0.05); heart rate (82 +/- 6 to 143 +/- 5 beats/min), systolic BP (160 +/- 6 to 270 +/- 21 Torr), diastolic BP (91 +/- 2 to 183 +/- 18 Torr), ITP (0.8 +/- 0.8 to 57.8 +/- 24 Torr), and p

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Stewart, Julian M., Leslie D. Montgomery, June L. Glover, and Marvin S. Medow. "Changes in regional blood volume and blood flow during static handgrip." American Journal of Physiology-Heart and Circulatory Physiology 292, no. 1 (2007): H215—H223. http://dx.doi.org/10.1152/ajpheart.00681.2006.

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Increased blood pressure (BP) and heart rate during exercise characterizes the exercise pressor reflex. When evoked by static handgrip, mechanoreceptors and metaboreceptors produce regional changes in blood volume and blood flow, which are incompletely characterized in humans. We studied 16 healthy subjects aged 20–27 yr using segmental impedance plethysmography validated against dye dilution and venous occlusion plethysmography to noninvasively measure changes in regional blood volumes and blood flows. Static handgrip while in supine position was performed for 2 min without postexercise ische

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Rissanen, Joonas Antero, Keijo Häkkinen, Jari Antero Laukkanen, and Arja Häkkinen. "Acute Hemodynamic Responses to Combined Exercise and Sauna." International Journal of Sports Medicine 41, no. 12 (2020): 824–31. http://dx.doi.org/10.1055/a-1186-1716.

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AbstractThis study investigated acute hemodynamic, plasma volume and immunological responses to four loading protocols: sauna only, and sauna after endurance, strength or combined endurance and strength exercise. Twenty-seven healthy, slightly prehypertensive men (age 32.7±6.9 years) were measured at PRE, MID (after exercise), POST, POST30min and POST24h. The measurements consisted systolic and diastolic blood pressure, heart rate, body temperature and concentrations of high-sensitive C-reactive protein, white blood cells and plasma volume measurements. Endurance+sauna showed significant decre

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Alexandryuk, Yulia, and Elena Ivantsova. "Adaptive Reactions of Students’ Blood Circulation in the Dynamics of the Annual Cycle of Study at the University." Natural Systems and Resources, no. 3 (October 2023): 36–41. http://dx.doi.org/10.15688/nsr.jvolsu.2023.3.5.

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Increasing training loads significantly affects the health of students. The cardiovascular system can react especially sharply to such changes. The purpose of the research is to analyze the indicators of systemic hemodynamics and adaptive reactions in students at Volgograd State University in the dynamics of the academic year. The study of hemodynamics was carried out in 2021–2023, from September to May. The following indicators were used: systolic and diastolic blood pressure, pulse pressure, mean hemodynamic pressure, systolic blood flow volume, minute volume of blood flow and peripheral vas

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KAJIYA, FUMIHIKO, OSAMU HIRAMATSU, MASAMI GOTO, and YASUO OGASAWARA. "MECHANICAL CHARACTERISTICS OF CORONARY CIRCULATION." Journal of Mechanics in Medicine and Biology 01, no. 02 (2001): 67–77. http://dx.doi.org/10.1142/s0219519401000179.

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The phase opposition of velocity waveforms between coronary arteries (predominantly diastolic) and veins (systolic) is the most prominent characteristic of coronary hemodynamics. The phase opposition indicates the importance of intramyocardial capacitance vessels, as a determinant of phasic coronary arterial and venous flows. To investigate the functional characteristics of the intramyocardial capacitance vessels and its physiological significance, we analyzed the change in venous flow following changes in coronary arterial inflow. It was shown that during diastole the intramyocardial capacita

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King, K. A., and J. R. Ledsome. "Atrial dynamics, atrial natriuretic factor, tachycardia, and blood volume in anesthetized rabbits." American Journal of Physiology-Heart and Circulatory Physiology 261, no. 1 (1991): H22—H28. http://dx.doi.org/10.1152/ajpheart.1991.261.1.h22.

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The effects of tachycardia and a slow (1%/min) 20% reduction and elevation of blood volume (BV) on right atrial pressure (RAP), right atrial dimension (RAD), and plasma immunoreactive atrial natriuretic factor (IR-ANF) were examined in anesthetized rabbits. Plasma IR-ANF was significantly increased during pacing at 6 Hz in the presence of high BV but not at low BV. Mean RAP increased with expansion of BV, but this change was not associated with significant changes in IR-ANF. There were no statistically significant changes in systolic or diastolic RAD with alterations in BV or with tachycardia.

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Chantler, Paul D., Vojtech Melenovsky, Steven P. Schulman, et al. "The sex-specific impact of systolic hypertension and systolic blood pressure on arterial-ventricular coupling at rest and during exercise." American Journal of Physiology-Heart and Circulatory Physiology 295, no. 1 (2008): H145—H153. http://dx.doi.org/10.1152/ajpheart.01179.2007.

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In healthy subjects the arterial system and the left ventricle (LV) are tightly coupled at rest to optimize cardiac performance. Systolic hypertension (SH) is a major risk factor for heart failure and is associated with structural and functional alterations in the arteries and the LV. The effects of SH and resting systolic blood pressure (SBP) on arterial-ventricular coupling ( EaI/ ELVI) at rest, at peak exercise, and during recovery are not well described. We noninvasively characterized EaI/ ELVI as end-systolic volume index/stroke volume index in subjects who were normotensive (NT, n = 203)

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Smolich, Joseph J. "Enhanced ventricular pump function and decreased reservoir backflow sustain rise in pulmonary blood flow after reduction of lung liquid volume in fetal lambs." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 306, no. 4 (2014): R273—R280. http://dx.doi.org/10.1152/ajpregu.00416.2013.

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Although a reduction in lung liquid volume increases fetal pulmonary blood flow, the changes in central flow patterns that sustain this increased pulmonary perfusion are unknown. To address this issue, eight anesthetized late-gestation fetal sheep were instrumented with pulmonary trunk (PT), ductus arteriosus (DA), and left pulmonary artery (PA) micromanometer catheters and transit-time flow probes, with blood flow profile and wave intensity analyses performed at baseline and after withdrawal of lung liquid via an endotracheal tube. Reducing lung liquid volume by 19 ± 6 ml/kg (mean ± SD) augme

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Krams, R., M. Janssen, C. Van der Lee, et al. "Loss of elastic recoil in postischemic myocardium induces rightward shift of the systolic pressure-volume relationship." American Journal of Physiology-Heart and Circulatory Physiology 267, no. 4 (1994): H1557—H1564. http://dx.doi.org/10.1152/ajpheart.1994.267.4.h1557.

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Ischemia-induced systolic dysfunction has been ascribed to changes in cellular excitation-contraction coupling and diastolic dysfunction because of disruption of the extracellular collagen matrix. Therefore, systolic and diastolic pressure-volume relationships and O2 consumption were determined before and after 5 min of global ischemia in isolated blood-perfused porcine hearts. The slope of the systolic pressure-volume relationship was 7.2 +/- 0.6 (SE) mmHg.ml-1.100 g-1 (n = 18) at baseline and did not change during reperfusion, but the systolic volume intercept shifted from 1.0 +/- 0.4 ml/100

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Wronski, T., P. B. Persson, E. Seeliger, A. Harnath, and B. Flemming. "Coupling of left ventricular and aortic volume elasticity in the rabbit." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 279, no. 2 (2000): R539—R547. http://dx.doi.org/10.1152/ajpregu.2000.279.2.r539.

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Changes in volume elasticity (VE) of the left ventricle and aorta could be important for blood flow. A procedure is presented to rapidly assess VE of the left ventricle and aorta by analyzing changes in the eigenfrequency. Six control rabbits and 11 rabbits with atheromatosis (12 wk of high-cholesterol feeding) were studied. In control rabbits, during the first half of the systole, left ventricular VE continuously increased to +43% ( P < 0.05). Then VE gradually declined to an end-diastolic minimum (20% of the average systolic levels, P < 0.05). Aortic VE changes were in the opposite dir

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Ivasenko, А. Yu, and V. І. Sheiko. "INDICATORS OF CENTRAL HEMODYNAMICS IN ACQUIRED MYOPIA." Актуальні проблеми сучасної медицини: Вісник Української медичної стоматологічної академії 24, no. 2 (2024): 27–30. http://dx.doi.org/10.31718/2077-1096.24.2.27.

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Introduction. The presented study focuses on investigating the impact of acquired myopia on human central hemodynamics. Myopia, or nearsightedness, ranks as one of the most common ophthalmological disorders globally and in Ukraine, manifesting either congenitally or acquired over a lifetime. Ophthalmology specialists note a rapid increase in myopia cases across all age groups, with its prevalence posing a significant threat to vision and overall health. Viewing myopia as an adaptive response to a substantial visual strain one can presume that this adaptation might not be localized but generali

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Güllüpınar, Birdal, Caner Sağlam, Serhat Koran, Ajda Turhan, and Erden Erol Ünlüer. "The role of mitral annular plane systolic excursion in prediction of acute blood loss in healthy voluntary blood donors." Journal of Ultrasonography 22, no. 88 (2022): 33–38. http://dx.doi.org/10.15557/jou.2022.0006.

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Aim: The aim of this study is to compare the diameter of the inferior vena cava with mitral annular plane systolic excursion measurement in order to determine the volume loss before and after blood donation in healthy volunteers. Material and methods: The study was a singlecenter, prospective, cross-sectional study which included 46 healthy blood donors donating in a tertiary care hospital’s blood bank. The inclusion criteria for the study were: volunteers aged 18–65 years, over 50 kg in weight, who met blood donation criteria, with hemoglobin values of >13.5 g/dL for males and >12.5 g/d

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Clark, Raymond J., and Kenneth J. Rodnick. "Pressure and volume overloads are associated with ventricular hypertrophy in male rainbow trout." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 277, no. 4 (1999): R938—R946. http://dx.doi.org/10.1152/ajpregu.1999.277.4.r938.

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We investigated whether ventricular hypertrophy in reproductively mature male trout ( Oncorhynchus mykiss) is associated with elevated hemodynamic loads. We measured ventral aortic blood pressure, pulse pressure dynamics, and blood volume in cannulated, unanesthetized trout with a wide range of relative ventricle masses (RVM, 0.076–0.199% of body wt). We also investigated in vitro pressure-volume dynamics in the bulbus arteriosus taken from trout with a wide range of RVMs. RVM was positively correlated with peak systolic pressure (SBP), mean blood pressure, and pulse pressure. Diastolic pressu

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Soelistyoningsih, Dwi, Daramatasia Wira, Abdul Qodir, and Achmad Rifa'i. "Mean Platelet Volume as Potential Predictor of Intradialytic Hypertension." Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan 18, no. 2 (2024): 225–31. https://doi.org/10.33533/jpm.v18i2.9475.

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Abnormalities in platelets can lead to severe consequences renal and systemic blood flow. The aim of this study is to determine the predictive ability of platelet indices (mean platelet volume, platelet-lymphocyte ratio, and platelet count) in relation to changes in blood pressure before and immediately after hemodialysis. This study included 98 patients undergoing hemodialysis at the RSU UMM Malang, aged ≥18 years, hemodialysis duration > 1 month, and signing informed consent. The predictor variable were MPV, PLR, and platelet count and the outcome was the incidence of IDHT. There was a si

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Haring, Bernhard, Jingmin Liu, Elena Salmoirago-Blotcher, et al. "Blood pressure variability and brain morphology in elderly women without cardiovascular disease." Neurology 92, no. 12 (2019): e1284-e1297. http://dx.doi.org/10.1212/wnl.0000000000007135.

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ObjectiveTo examine the relationship between blood pressure (BP) variability (BPV), brain volumes, and cognitive functioning in postmenopausal women with few modifiable cardiovascular risk factors.MethodsStudy participants consisted of postmenopausal women enrolled in the Women's Health Initiative Memory MRI study (WHIMS-MRI) without cardiovascular disease, diabetes mellitus, hypertension, or current smoking at baseline (1996–1999). BP readings were taken at baseline and each annual follow-up visit. BPV was defined as the SD associated with a participant's mean BP across visits and the SD asso

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Urroz Lopez, Maryell, Jamie R. Mitchell, Robert S. Sheldon, and John V. Tyberg. "Effector mechanisms in the baroreceptor control of blood pressure." Advances in Physiology Education 46, no. 2 (2022): 282–85. http://dx.doi.org/10.1152/advan.00160.2021.

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While the effects of changing heart rate and systemic vascular resistance have been generally understood and appreciated, the effects of changes in left ventricular contractility on end-systolic volume may have been less understood and appreciated and the effects of changes in venous capacitance on end-diastolic volume may have been unknown to many readers. Herein, we have provided a brief review for the medical student and beginning graduate student highlighting these sometimes-complex relationships.

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Wiącek, Marcin, Izabella Tomaszewska-Lampart, Marzena Dziedzic, Anna Kaczorowska, and Halina Bartosik-Psujek. "Association between Transient-Continuous Hypotension during Mechanical Thrombectomy for Acute Ischemic Stroke and Final Infarct Volume in Patients with Proximal Anterior Circulation Large Vessel Occlusion." Journal of Clinical Medicine 13, no. 13 (2024): 3707. http://dx.doi.org/10.3390/jcm13133707.

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Background/Objectives: Periprocedural blood pressure changes in stroke patients with a large vessel occlusion are a known modifiable risk factor of unfavorable treatment outcomes. We aimed to evaluate the association between pre-revascularization hypotension and the final infarct volume. Methods: In our retrospective analysis, we included 214 consecutive stroke patients with an anterior circulation large vessel occlusion that underwent mechanical thrombectomy under general anesthesia. Noninvasively obtained blood pressure values prior to symptomatic vessel recanalization were analyzed as a pre

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Rodriguez-Luna, David, Noelia Rodriguez-Villatoro, Jesús M. Juega, et al. "Prehospital Systolic Blood Pressure Is Related to Intracerebral Hemorrhage Volume on Admission." Stroke 49, no. 1 (2018): 204–6. http://dx.doi.org/10.1161/strokeaha.117.018485.

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