Academic literature on the topic 'Neckar Canal'

The introduction of riverwater accumulated over the years in reservoirs and canale for agricultural crops can contribute to the emergence of new representatives of mikrofloraandmikrofauna, wich, in turn, contribute to improving soil fertility, improving soil amelioration and reducing the dosage of mineral fertilizers, thus improving the ecological condition of the soil composition, in the Nakhchivan Autonomous Republic, water supply to agricultural areas is provided by reservoirs and canals including the Vaikhyr reservoir, the Syrabian reservoir, the Neckram canal and the Turian canal. Over the years, as the Nakhchivanriver waters flow in to them suspended sediment deposition has bettaking pleace. Key words:gross composition, chemistry, sediments, river load, minerals, fertility

Group size and habitat use of Black-necked Storks Ephippiorhynchus asiaticus were studied over a 30-month period in an unprotected landscape with a mosaic of natural and manmade features in Etawah and Mainpuri districts, Uttar Pradesh, India. Group size was largely one or two and never more than a family of two adults and three young. Group size did not change with season or across habitat types. Black-necked Storks used habitats to different extents across years and seasons. Wetlands were preferred in all seasons and rice-paddies were preferred during the monsoon. The use of irrigation canals was consistent across seasons and was always in proportion to their availability. Irrigation canals and crop-fields, particularly flooded rice-fields, provided some additional habitat to Black-necked Storks, but catered to the population for a very small period of time. While some studies have demonstrated that flooded rice-fields are useful for wintering waterbird species, conversion of natural wetlands to crop-fields will not be advantageous to Black-necked Storks, and these habitats need to be preserved to conserve the species.

Background and aims – Copaifera coriacea, a species in the resin-producing clade Detarioideae (Leguminosae), is an endemic and abundant species found in sand dunes in Brazilian Caatinga domain vegetation – a Quaternary paleodesert. We investigated floral traits and aspects of pollination biology, focusing on the pollination system of C. coriacea. Material and methods – Anthesis duration, stigma receptivity, pollen viability, nectar concentration, and the presence of osmophores and pigments reflecting UV light were assessed. Floral visitors were classified as potential pollinators, occasional pollinators or thieves, based on the time and foraging behaviour and resource collected. Pollination effectiveness were assessed for potential pollinators by the detection of pollen tubes on the stigma or stylar canal by epifluorescence microscopy.Key results – The species has white and small flowers, with anthesis beginning in the dark (ca 00:30) and the flowers are completely opened approximately 3 h later, when a sweet odour is perceptible. The onset of stigma receptivity and pollen grain viability occurs only after the completion of flower opening, and a concentrated nectar is available during the day. The presence of pollen tubes confirmed the efficiency of the main insects in the transfer of pollen. Conclusion – Our result demonstrates that C. coriacea has a generalist pollination system mediated mainly by two distinct guilds of insect pollinators: moths (nocturnal, searching for nectar) and bees (diurnal, pollen collectors). This finding can provide more information about diversification in the genus Copaifera.

The ability of Lepidoptera, or butterflies and moths, to drink liquids from rotting fruit and wet soil, as well as nectar from floral tubes, raises the question of whether the conventional view of the proboscis as a drinking straw can account for the withdrawal of fluids from porous substrates or of films and droplets from floral tubes. We discovered that the proboscis promotes capillary pull of liquids from diverse sources owing to a hierarchical pore structure spanning nano- and microscales. X-ray phase-contrast imaging reveals that Plateau instability causes liquid bridges to form in the food canal, which are transported to the gut by the muscular sucking pump in the head. The dual functionality of the proboscis represents a key innovation for exploiting a vast range of nutritional sources. We suggest that future studies of the adaptive radiation of the Lepidoptera take into account the role played by the structural organization of the proboscis. A transformative two-step model of capillary intake and suctioning can be applied not only to butterflies and moths but also potentially to vast numbers of other insects such as bees and flies.

Numerous nuanced approaches have been used to access posterior inferior cerebellar artery (PICA) aneurysms for microsurgical clipping. The authors report the case of a patient with a right vertebral artery (VA)–PICA aneurysm that was reached via a contralateral far-lateral approach. The wide-necked saccular/fusiform aneurysm arose from the lateral aspect of the right V4 segment just proximal to the PICA origin, anterior to the jugular tubercle at the level of the hypoglossal canal. Computed tomography angiograms demonstrated the size and configuration of the aneurysm, and 3D reconstructions revealed the tortuosity of the right VA, defining its location just left of the midline adjacent to the lower clivus. A contralateral far-lateral approach to VA–PICA aneurysms should be considered when aneurysms cross the midline. Computed tomography angiography with volume rendering and interactive software capabilities can help identify the relationship of such an aneurysm to an individual's particular skull base osseous anatomy and is paramount in selecting the optimal microsurgical approach.

Abstract Aechmea (Bromeliaceae) is a large genus with controversial systematics and distinct flower shapes and pollinators. We explored floral anatomy and development in two Aechmea spp. belonging to different subgenera to contribute useful information on reproductive biology and taxonomy. We examined floral buds using scanning electron and light microscopy to characterize the development of septal nectaries, petal appendages, ovules, stamens and carpels. In A. gamosepala, we confirmed that the petal appendages develop late, whereas in A. correia-araujoi they develop earlier during floral development. Petal appendage formation included positional changes, possibly affecting floral attributes and visitation by insects, rather than vertebrates. Nectar is released through three basal orifices distally on the ovary, and here we document the link between the nectary region, through discrete canals, upward to the conduplicate lobes of the wet stigma. Improved understanding of the floral development and morphology of Aechmea may help to explain the existence of polymorphic flowers in this genus and may have implications for studies on interactions with pollinators and systematics.

Background: Intracranial infectious aneurysms are cerebral aneurysms caused by pathogen-induced inflammation undermining the arterial wall. We present a rare case of inflammatory pseudoaneurysm of cavernous internal carotid artery (ICA). Case Description: A 51-year-old female with a recent diagnosis of acute lymphoblastic leukemia developed maxillofacial infection with Pseudomonas and Acinetobacter after chemotherapy onset. Initial plain computed tomography (CT) revealed bony dehiscence of the left ICA canal, as well as bilateral protrusion of the vessel within the sphenoid sinus. Following infection spread into the left sphenoid sinus, she presented with episodes of intermittent epistaxis, without any profound vascular abnormalities on postcontrast CT. CT angiography that was performed 15 days later, due to refractory epistaxis, illustrated a large narrow necked irregular shape pseudoaneurysm of the left paraophthalmic ICA, extending into the ipsilateral sphenoid sinus. The aneurysm was completely occluded by selective embolization without parent or adjacent vessel sacrifice, documented on both intraoperative and follow-up angiogram, with no recurrence of epistaxis. Conclusion: Conclusively, ruptured internal carotid infectious aneurysms are rare but potentially fatal causes of epistaxis when extended into the sphenoid sinus. Selective coiling is feasible and can provide definitive treatment of these lesions.

Hidden away at the ends of streets, behind suburban parks and community assets, there remain remnants of the coastal wallum heathlands that once stretched from Caloundra to Noosa, in Queensland, Australia. From late July to September, these areas explode with colour, a springtime wonderland of white wedding bush, delicate ground orchids, the pastels and brilliance of pink boronias, purple irises, and the diverse profusion of yellow bush peas. These gifts of nature are still relatively unknown and unappreciated, with most locals, and Australians at large, having little knowledge of the remarkable nature of the wallum, the nutrient-poor sandy soil that can be almost as acidic as battery acid, but which sustains a finely tuned ecosystem that, once cleared, cannot be regrown. These heathlands and woodlands, previously commonplace beyond the beach dunes of the coastal region, are now only found in a number of national parks and reserves, and suburban remnants.Image 1: The author wildflowering and making art (Photo: Judy Barrass)I too was one of those who had no idea of the joys of the wallum and heathland wildflowers, but it was the creative works of Kathleen McArthur and Judith Wright that helped initiate my education, my own wanderings, wildflowering, and love. Learning country has been a multi-faceted experience, extended and tested as walking becomes an embodied encounter, bodies and landscapes entwined (Lund), an imaginative reimagining, creative act and source of inspiration, a form of pilgrimage (Morrison), forging an intimate relationship (Somerville).Image 2: Women wildflowering next to Rainbow Beach (Photo: Susan Davis)Wandering—the experience shares some similar characteristics to walking, but may have less of a sense of direction and destination. It may become an experience that is relational, contemplative, connected to place. Wandering may be transitory but with impact that resonates across years. Such is the case of wandering for McArthur and Wright; the experience became deeply relational but also led to a destabilisation of values, where the walking body became “entangled in monumental historical and social structures” (Heddon and Turner). They called their walking and wandering “wildflowering”. Somerville said of the term: “Wildflowering was a word they created to describe their passion for Australian wildflower and their love of the places where they found them” (Somerville 2). However, wildflowering was also very much about the experience of wandering within nature, of the “art of seeing”, of learning and communing, but also of “doing”.Image 3: Kathleen McArthur and Judith Wright “wildflowering” north of Lake Currimundi. (Photo: Alex Jelinek, courtesy Alexandra Moreno)McArthur defined and described going wildflowering as meaningdifferent things to different people. There are those who, with magnifying glass before their eyes, looking every inch the scientist, count stamens, measure hairs, pigeon-hole all the definitive features neatly in order and scoff at common names. Others bring with them an artistic inclination, noting the colours and shapes and shadows in the intimate and in the general landscape. Then there are those precious few who find poetry in a Helmut Orchid “leaning its ear to the ground”; see “the trigger-flower striking the bee”; find secrets in Sun Orchids; see Irises as “lilac butterflies” and a fox in a Yellow Doubletail…There are as many different ways to approach the “art of seeing” as there are people who think and feel and one way is as worthy as any other to make of it an enjoyably sensuous experience… (McArthur, Australian Wildflowers 52-53)Wildflowering thus extends far beyond the scientific collector and cataloguer of nature; it is about walking and wandering within nature and interacting with it; it is a richly layered experience, an “art”, “a sensuous experience”, “an artistic inclination” where perception may be framed by the poetic.Their wildflowering drove McArthur and Wright to embark on monumental struggles. They became the voice for the voiceless lifeforms within the environment—they typed letters, organised meetings, lobbied politicians, and led community groups. In fact, they often had to leave behind the environments and places that brought them joy to use the tools of culture to protest and protect—to ensure we might be able to appreciate them today. Importantly, both their creativity and the activism were fuelled by the same wellspring: walking, wandering, and wildflowering.Women Wandering and WildfloweringWhen McArthur and Wright met in the early 1950s, they shared some similarities in terms of relatively privileged social backgrounds, their year of birth (1915), and a love of nature. They both had houses named after native plants (“Calanthe” for Wright’s house at Tambourine, “Midyim” for McArthur’s house at Caloundra), and were focussed on their creative endeavours—Wright with her poetry, McArthur with her wildflower painting and writing. Wright was by then well established as a highly regarded literary figure on the Australian scene. Her book of poetry The Moving Image (1946) had been well received, and later publications further consolidated her substance and presence on the national literary landscape. McArthur had been raised as the middle daughter of a prominent Queensland family; her father was Daniel Evans, of Evans Deakin Industries, and her mother “Kit” was a daughter of one of the pastoral Durack clan. Kathleen had married and given birth to three children, but by the 1950s was exploring new futures and identities, having divorced her husband and made a home for her family at Caloundra on Queensland’s Sunshine Coast. She had time and space in her life to devote to her own pursuits and some financial means provided through her inheritance to finance such endeavours.Wright and McArthur met in 1951 after McArthur sent Wright a children’s book for Judith and Jack McKinney’s daughter Meredith. The book was by McArthur’s cousins, Mary Durack (of Kings in Grass Castles fame) and Elizabeth Durack. Wright subsequently invited McArthur to visit her at Tambourine and from that visit their friendship quickly blossomed. While both women were to become known as high-profile nature lovers and conservationists, Wright acknowledges that it was McArthur who helped “train her eye” and cultivated her appreciation of the wildflowers of south-east Queensland:There are times in one’s past which remain warm and vivid, and can be taken out and looked at, so to speak, with renewed pleasure. Such, for me, were my first meetings in the early 1950s with Kathleen McArthur, and our continuing friendship. They brought me joys of discovery, new knowledge, and shared appreciation. Those “wild-flowering days” at Tamborine Mountain, Caloundra, Noosa or Lake Cootharaba, when I was able to wander with her, helped train my own eye a little to her ways of seeing and her devotion to the flowers of the coast, the mountains, and the wallum plains and swamps. (Wright quoted in McArthur, Australian Wildflowers 7)It was through this wandering and wildflowering that their friendship was forged, their knowledge of the plants and landscape grew and their passion was ignited. These acts of wandering were ones where feelings and the senses were engaged and celebrated. McArthur was to document her experiences of these environments through her wildflower paintings, cards, prints, weekly articles in the local newspapers, and books featuring Queensland and Australian Wildflowers (McArthur, Queensland Wildflowers; Living; Bush; Australian Wildflowers). Wright wrote a range of poems featuring landscapes and flora from the coastal experiences and doubtless influenced by their wildflowering experiences. These included, for example, Judith Wright’s poems “Wildflower Plain”, “Wonga Vine”, “Nameless Flower”, and “Sandy Swamp” (Collected Works).Through these acts of wildflowering, walking, and wandering, McArthur and Wright were drawn into activism and became what I call “wild/flower” women: women who cared for country, who formed a deep connection and intimate relationship with nature, with the more-than-human world; women who saw themselves not separate from nature but part of the great cycles of life, growth, death, and renewal; women whose relationship to the country, to the wildflowers and other living things was expressed through drawing, painting, poetry, stories, and performances—but that love driving them also to actions—actions to nurture and protect those wildflowers, places, and living things. This intimate relationship with nature was such that it inspired them to become “wild”, at times branded difficult, prompted to speak out, and step up to assume high profile roles on the public stage—and all because of their love of the small, humble, and often unseen.Wandering into Activism A direct link between “wildflowering” and activism can be identified in key experiences from 1953. That was the year McArthur devoted to “wildflowering”, visiting locations across the Sunshine Coast and South-East Queensland, documenting all that was flowering at different times of the year (McArthur, Living 15). She kept a monthly journal and also engaged in extensive drawing and painting. She was joined by Wright and her family for some of these trips, including one that would become a “monumental” expedition. They explored the area around Noosa and happened to climb to the top of Mt Tinbeerwah. Unlike many of the other volcanic plugs of the Sunshine Coast that would not be an easy climb for a family with young children, Tinbeerwah is a small volcanic peak, close to the road that runs between Cooroy and Tewantin, and one that is a relatively easy walk. From the car park, the trail takes you over volcanic lava flows, a pathway appearing, disappearing, winding through native grasses, modest height trees and to the edge of a dramatic cliff (one now popular with abseilers and adventurers). The final stretch brings you out above the trees to stunning 360-degree views, other volcanic peaks, a string of lakes and waterways, the patchwork greens of farmlands, distant blue oceans, and an expanse of bushland curving north for miles. Both women wrote about the experience and its subsequent significance: When Meredith was four years old, Kathleen McArthur, who was a great wildflower enthusiast and had become a good friend, invited us to join her on a wildflower expedition to the sand-plains north of Noosa. There the Noosa River spread itself out into sand-bottomed lakes between which the river meandered so slowly that everywhere the sky was serenely mirrored in it, trees hung low over it, birds haunted them.Kathleen took her little car, we took our converted van, and drove up the narrow unsealed road beyond Noosa. Once through the dunes—where the low bush-cover was white with wedding-bush and yellow with guinea-flower vines—the plains began, with many and mingled colours and scents. It was spring, and it welcomed us joyfully. (Wright, Half 279-280)McArthur also wrote about this event and its importance, as they both realised that this was territory that was worth protecting for posterity: ‘it was obvious that this was great wildflower country in addition to having a fascinating system of sand mass with related river and lakes. It would make a unique national park’ (McArthur, Living 53). After this experience, Kathleen and Judith began initial inquiries to find out about how to progress ideas for forming a national park (McArthur, Living). Brady affirms that it was Kathleen who first “broached the idea of agitating to have the area around Cooloola declared a National Park” (Brady 182), and it was Judith who then made inquiries in Brisbane on their way back to Mount Tambourine:Judith took the idea to Romeo Lahey of the National Parks Association who told her it was not threatened in any way whereas there were important areas of rainforest that were, and his association gave priority to those. If he had but known, it was threatened. The minerals sands prospectors were about to arrive, if not already in there. (McArthur, Living 53)These initial investigations were put on hold as the pair pursued their “private lives” and raised their children (McArthur, Living), but reignited throughout the 1960s. In 1962, McArthur and Wright were to become founding members of the Wildlife Preservation Society of Queensland (along with David Fleay and Brian Clouston), and Cooloola was to become one of one of their major campaigns (McArthur, Living 32). This came to the fore when they discovered there were multiple sand mining leases pending across the Cooloola region. It was at McArthur’s suggestion that a national postcard campaign was launched in 1969, with their organisation sending over 100,000 postcards across Australia to then be sent back to Joh Bjelke Peterson, the notoriously pro-development, conservative Queensland Premier. This is acknowledged as Australia’s first postcard campaign and was reported in national newspapers; The Australian called the Caloundra branch of WPSQ one of the “most militant cells” in Australia (25 May 1970). This was likely because of the extent of the WPSQ communications across media channels and persistence in taking on high profile critics, including the mining companies.It was to be another five years of campaigning before the national park was declared in 1975 (then named Cooloola National Park, now part of the Great Sandy). Wright was to then leave Queensland to live on a property near Braidwood (on the Southern Tablelands of New South Wales) and in a different political climate. However, McArthur stayed in Caloundra, maintaining her deep commitment to place and country, keeping on walking and wandering, painting, and writing. She campaigned to protect beach dunes, lobbied to have Pumicestone Passage added to the national heritage register (McArthur, Pumicestone), and fought to prevent the creation of canal estates on the Pumicestone passage. Following the pattern of previous campaigns, she engaged in detailed research, drawing on expertise nationally and internationally, and writing many submissions, newspaper columns, and letters.McArthur also advocated for the plants, the places, and forms of knowing that she loved, calling for “clear thinking and deep feeling” that would enable people to see, value, and care as she did, notably saying:Because our flowers have never settled into our consciousness they are not seen. People can drive through square miles of colourful, massed display of bloom and simply not see it. It is only when the mind opens that the flowers bloom. (McArthur, Bush 2)Her belief was that once you walked the country and could “see”, become familiar with, and fall in love with the wildflowers and their environment, you could not then stand by and see what you love destroyed. Her conservation activities and activism arose and was fed through her wildflowering and the deep knowledge and connections that were formed.Wildflowering and Wanderings of My OwnSo, what we can learn from McArthur and Wright, from our wild/flower women, their wanderings, and wildflowering?Over the past few years, I have walked the wallum country that they loved, recited their poetry, shared their work with others, walked with women in the present accompanied by resonances of the past. I have shared these experiences with friends, artists, and nature lovers. While wandering with one group of women one day, we discovered that a patch of wallum behind Sunshine Beach was due to be cleared for an aged care development. It is full of casuarina food trees visited by the endangered Glossy Black Cockatoos, but it is also full of old wallum banksias, a tree I have come to love, influenced in part by writing and art by McArthur, and my experiences of “wildflowering”.Banksia aemula—the wallum banksia—stands tall, often one of the tallest trees of our coastal heathlands and after which the wallum was named. A range of sources, including McArthur herself, identify the source of the tree’s name as an Aboriginal word:It is an Aboriginal word some say applied to all species of Banksia, and others say to Banksia aemula. The wallum, being up to the present practically useless for commercial purposes provides our best wildflower shows… (McArthur, Queensland Wildflowers 2)Gnarled, textured bark—soft grey and warm red browns, in parts almost fur—the flower heads, when young, feed the small birds and honeyeaters; the bees collect nectar to make honey. And the older heads—remnants on the ground left by glorious black cockatoos, whose beaks, the perfect pliers, crack pods open to recover the hidden seeds. In summer, as the new flowers burst open, every stage of the flower stem cycle is on show. The trees often stand together like familiar friends gossiping, providing shelter; they are protective, nurturing. Banksia aemula is a tree that, according to Thomas Petrie’s reminiscence of “early” Queensland, was significant to Aboriginal women, and might be “owned” by certain women:but certain men and women owned different fruit or flower-trees and shrubs. For instance, a man could own a bon-yi (Auaurcaria Bidwilli) tree, and a woman a minti (Banksia aemula)… (Petrie, Reminiscences 148)Banksia, wallum, women… the connection has existed for millennia. Women walking country, talking, observing, collecting, communing—and this tree was special to them as it has become for me. Who knows how old those trees are in that patch of forest and who may have been their custodians.Do I care about this? Yes, I do. How did I come to care? Through walking, through “wildflowering”, through stories, art, and experience. My connections have been forged by nature and culture, seeing McArthur’s art and reading Wright’s words, through walking the country with women, learning to know, and sharing a wildflowering culture. But knowing isn’t enough: wandering and wondering, has led to something more because now I care; now we must act. Along with some of the women I walked with, we have investigated council records; written to, and called, politicians and the developer; formed a Facebook group; met with various experts; and proposed alternatives. However, our efforts have not met with success as the history of the development application and approval was old and complex. Through wandering and “wildflowering”, we have had the opportunity to both lose ourselves and find ourselves, to escape, to learn, to discover. However, such acts are not necessarily aimless or lacking direction. As connections are forged, care and concern grows, and acts can shift from the humble and mundane, into the intentional and deliberate. The art of seeing and poetic perceptions may even transform into ecological action, with ramifications that can be both significant monumental. Such may be the power of “wildflowering”.ReferencesBrady, Veronica. South of My Days: A Biography of Judith Wright. Sydney: Angus & Robertson, 1998.Heddon, Deirdre and Cathy Turner. “Walking Women: Shifting the Tales and Scales of Mobility.” Contemporary Theatre Review 22.2 (2012): 224–236.Lund, Katrín. “Landscapes and Narratives: Compositions and the Walking Body.” Landscape Research 37.2 (2012): 225–237.McArthur, Kathleen. Queensland Wildflowers: A Selection. Brisbane: Jacaranda Press, 1959.———. The Bush in Bloom: A Wildflower Artist’s Year in Paintings and Words. Sydney: Kangaroo Press, 1982.———. Pumicestone Passage: A Living Waterway. Caloundra: Kathleen McArthur, 1978.———. Looking at Australian Wildflowers. Sydney: Kangaroo Press, 1986.———. Living on the Coast. Sydney: Kangaroo Press, 1989.Morrison, Susan Signe. “Walking as Memorial Ritual: Pilgrimage to the Past.” M/C Journal 21.4 (2018). 12 Aug. 2019 <http://journal.media-culture.org.au/index.php/mcjournal/article/view/1437>.Petrie, Constance Campbell, and Tom Petrie. Tom Petrie’s Reminiscences of Early Queensland. 4th ed. Brisbane: University of Queensland Press, 1992. Somerville, Margaret. Wildflowering: The Life and Places of Kathleen McArthur. Brisbane: University of Queensland Press, 2004.Wright, Judith. Collected Poems: 1942 to 1985. Sydney: Harper Collins, 2016.———. Half a Lifetime. Melbourne: Text Publishing, 1999.

INTRODUÇÃO: Estenose do canal cervical consiste na diminuição do diâmetro sagital do canal cervical e está associada com maior risco de lesões neurológicas decorrentes de trauma cervical. Nos esportes de colisão, a estenose do canal cervical consiste em um importante parâmetro na decisão de retorno ao esporte após neuropraxia da medula cervical e após determinadas lesões do plexo braquial. Os métodos atualmente disponíveis para avaliação de estenose do canal cervical em atletas são muito caros (ex: por ressonância nuclear magnética) ou pouco precisos (métodos radiográficos). Este estudo avaliou um novo método radiográfico para determinação de estenose do canal cervical, comparando-o com medições realizadas em cadáveres, medida por ressonância nuclear magnética do canal cervical e do espaço disponível para a medula (SAC/SACD) e com o método radiográfico consagrado na literatura para determinação de estenose do canal cervical, o índice de Torg (IT). MÉTODOS: A população do estudo foram 20 homens entre 16 e 35 anos de idade. Os sujeitos realizaram uma ressonância nuclear magnética da coluna cervical para determinação do SAC/SACD e radiografias cervicais em perfil e antero-posterior para determinação do IT e do novo método radiográfico proposto, o diâmetro corrigido do canal cervical (DCCC). Para determinar o DCCC, foi utilizada uma barra de metal de 100 mm, acoplada verticalmente na linha média cervical, utilizando os processos espinhosos das vertebras cervicais como referência. Obtidos o diâmetro sagital da imagem do canal cervical e o comprimento da imagem da barra de metal na radiografia, e conhecendo o tamanho real da barra de metal, o diâmetro real do canal medular pôde ser estimado matematicamente com o uso do teorema de Tales. Os resultados obtidos para o DCCC foram comparados com valores encontrados em estudos com cadáveres, foi avaliada a concordância entre DCCC e o diâmetro médio-sagital do canal cervical aferido por ressonância magnética (DCRM) e os métodos radiográficos (DCCC e IT) foram correlacionados com o SAC/SACD. Os cálculos foram realizados nos níveis C3 a C7, além das médias de C3 a C6 [DCCC (MDCCC), IT (MTorg) e SAC/SACD (MSAC/MSACD)]. RESULTADOS: Os valores obtidos pelo DCCC (média do MDCCC: 15.29 mm) foram compatíveis com os valores descritos em estudos de medida direta. A correlação entre DCCC e SAC/SACD foi superior à correlação entre IT e SAC/SACD, sendo de 0.7025 para MDCCC e MSACD contra 0.5473 para MTorg e MSACD. O teste de concordância entre os valores absolutos para DCCC e DCRM evidenciou valores mais elevados na medida por DCCC, sendo média de 1.84 mm maior para MDCCC em relação a média de C3 a C6 pelo DCRM. CONCLUSÕES: O Diâmetro Corrigido do Canal Cervical apresentou valores semelhantes aos encontrados em estudos com medida direta em cadáveres e apresentou correlação com SAC/SACD superior ao IT
INTRODUCTION: Cervical spinal stenosis is the diminution of the anteroposterior diameter of the spinal canal and it is associated with increased risk of neurological injury from cervical trauma. In collision sports, the cervical canal stenosis is an important parameter in the return to play decision after cervical cord neuropraxia and after some brachial plexus injuries. The methods currently available for evaluation of cervical canal stenosis in athletes are expensive (eg, nuclear magnetic resonance) or imprecise (radiographic methods). This study evaluated a new radiographic method for determination of cervical canal stenosis, comparing it to measurements performed on cadavers, measurement by magnetic resonance imaging of the cervical canal and space available for the cord (SAC/SACD) and the consecrated radiographic method for determining cervical spinal stenosis, Torg ratio(TI). METHODS: The study population were 20 men between 16 and 35 years. The subjects underwent a magnetic resonance imaging of the cervical spine to determine the SAC/SACD and cervical radiographs to determine the IT and the proposed new radiographic method, called corrected cervical canal diameter (DCCC). To determine the DCCC, a 100 mm metal bar was used vertically over the cervical midline, using the spinous processes of the cervical vertebrae as reference. Got the radiographic diameter of the medullary canal and the length of the metal bar image on the radiograph , and knowing the actual size of the metal bar , the actual diameter of the spinal canal could be estimated mathematically with the simple use of the theorem of Thales. The results for the DCCC were compared with values found in cadavers studies, the agreement between DCCC and the mid-sagittal diameter of the cervical canal measured by magnetic resonance imaging (DCRM) was calculated and radiographic methods (DCCC and IT) were correlated with SAC/SACD. Calculations were performed individually for C3 to C7 and averages of C3 to C6 [DCCC (MDCCC), IT (MTorg) and SAC/SACD (MSAC/ MSACD)]. RESULTS: The values obtained by DCCC (average MDCCC: 15:29 mm) were consistent with the values described in studies using direct measurement. The correlation between DCCC and SAC/SACD was higher than the correlation between IT and SAC/SACD, being 0.7025 for MDCCC and MSACD and 0.5473 for MTorg and MSACD. The agreement between absolute values for DCCC and DCRM showed higher values for DCCC, which average 1.84 mm greater for MDCCC compared to the average of C3 to C6 for DCRM. CONCLUSIONS: The Fixed Diameter of the Cervical Canal showed similar values to those found in studies with direct measurement from cadavers and correlated with SAC/SACD better than IT

The majority of children with Down syndrome are friendly and separate from parents easily. The presence of comorbidities should be the area of focus for the anesthesiologist. Cardiac anomalies are commonly present, and the most common of these is common atrioventricular canal. Not all patients present with cardiac disease though, and some may present with gastrointestinal anomalies. These children also exhibit sensitivity to inhalational anesthetics resulting in bradycardia during inhalation induction. They tend to have very narrow auditory canals, making myringotomy challenging and resulting in relatively longer anesthetics for ear tube placement. Careful attention should be paid to positioning of the neck during instrumentation of the airway as well due to possible instability of the cervical spine.

This chapter on ENT outlines procedures like aural microsuction, nasal endoscopy, nasolaryngoscopy, pharyngoscopy, microlaryngoscopy, Dix Hallpike test and Epleu manoeuvre, nasal cautery, reduction of nasal fracture, drainage of orbital abscess, drainage of a peritonsillar abscess (Quincy), sphenopalatine artery ligation, biopsy of oral lesion, changing tracheostomy tube, removal of foreign body from the nose of a child, myringotomy, and insertion of grommet. Operations included are myringoplasty, tympanoyomy and tympanoplasty, excision of external canal osteoma/exostosis, cortical mastoidectomy, mastoid exploration, cochlear implantation, pinnaplasty, stapedectomy and ossciculoplasty, septoplasty, middle meatal antrostomy, nasal polypectomy, ethmoidectomy, septorhinoplasty, dacrocystorhinostomy (DCR), Caldwell–Luc, tracheostomy, excision of neck node, branchial cyst excision, excision of thyroglossal cyst, uvulopalatopharyngoplasty, parotidectomy, submandibular gland excision, neck dissection, total laryngectomy, tonsillectomy, adenoidectomy, and laryngo-tracheal reconstruction.