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Hypothermia : Hypothermia reduces the metabolic requirements of the body thereby reducing oxygen consumption. It also preserves high-energy phosphate stores of the body. At normal temperature, if there is circulatory arrest for three minutes, brain suffers hypoxic damage. At 30°C, this period extends up to 10 minutes. If the temperature is brought down to l8°C, this period extends up to 45 minutes. .In 1953, John Lewis used surface hypothermia up to 280C and by inflow occlusion method closed atrial septa1 defect while the heart was arrested for 5.5 minutes. Japanese surgeons started surface cooling followed by short period of core cooling to achieve deep hypothermia (l8°C) to have circulatory arrest to correct complicated intra cardiac lesions in babies. Surface cooling being a cumbersome procedure, these days both cooling and re warming are done on tile pump. In this technique of deep hypothermia and circulatory arrest (DHCA), it is safe if the period of arrest is 30 minutes or less. Between 30 minutes and 45 minutes, it is relatively safe. Above one hour, brain damage is likely to occur. In adults, the same technique is used for aortic arch aneurysms and pulmonary thrombo-endarterectomy. At the time of circulatory arrest, retrograde cerebral perfusion with cold perfusate through superior vena cava (cerebroplegia) is practised.
PHYSICAL EXAMINATION OF A CHILD This practical as you have seen above deals with assisting in various diagnostic procedures of a child. The first responsibility of you as a
Associated nerves and vessels The Anterior superior alveolar, Infraorbital, and Posterior superior alveolar nerves and arteries provide both the innervation and blood supply to
If two organisms share the similar kingdom, must they also share the similar domain? Explain. Two organisms that share the similar kingdom must also share the similar domain b
Why is iodine important for human beings? Iodine is a fundamental chemical element for the proper functioning of the thyroid since it is part of the hormones produced by this g
What is Cloning Cloning: Somatic (ie 2N) cell from original female cat removed (nucleus has mutated allele), fertilised egg extracted from another cat, nucleus removed, and egg
Q. Fluid management in Diarrhoea? Fluid management: The key to diarrhoea management is the early replacement of fluid lost in the stools through intravenous or oral route. Whil
What are two specific organs that work together to preform a function??
Geotropism - Root and Shoot Morphogenesis Roots always grow towards gravity. The lot threshold of geotropic response requires as little time as one minute Gravity pulls auxin
sample assignment on tagmatization
How you can Repair Ventricular Aneurysm with a patch? Repair of Ventricular Aneurysm with a patch : Originally described by Cooley, as endoaneurysmorra
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