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Cannulation : Typically blood is drained by gravity through two cannulae inserted into the superior and inferior vena cavae. During bypass, if the SVC and IVC are snared, the entire venous return to the heart is diverted to the pump (total cardio pulmonary bypass). Whenever the right side of the heart has to be opened, the patient has to be on total bypass. Otherwise, when a chamber is opened, air will enter the tubing, causing air lock and cessation of venous retu1-n. For an aortic valve replacement or coronary artery bypass, the right side need not be opened. So the operation can be done using a single, two stage venous cannulae passing through right atrium into the inferior vena cava (atrio-venous cannula). The oxygenated blood is returned through an arterial cannula inserted into the ascending aorta or femoral artery.
Human Population-Historical Overview Throughout history, the human population has been quite small. It has grown relatively slowly and even experienced occasional declines. Fi
what is the opposite of yield? A.grow B.attack C.ask D.answer
• Cancer cells do not respond normally to the body's control mechanism. o They divide excessively and invade other tissues. o If left unchecked, they can kill the organism. •
Q How does the amoeboid movement occur and what are examples of beings and cells that use such movements for locomotion? Amoeboid movements are created by cytoplasmic movements
What is Benedict's Test and its Principle? This test is answered by all reducing sugars with a free aldehyde or ketone groups. Monosaccharides possess a free aldehyde or ketone
What does radial symmetry mean? What is the type of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radial
Functionality of CMC CMC is soluble in cold water and mainly used for controlling viscosity without gelling. As its viscosity drops during heating, it may be used to improve t
What does S-shaped pattern of population growth show? How is J-shaped pattern dissimilar from it and why?
Q. What is severity of the oesophagitis? The severity of the oesophagitis resulting from oesophageal reflux is determined by the content of gastric reflux mucosal resistance,
Colonial Theory - Metazoa This is the most popular theory on the origin of Metazoa. The idea was conceived by Haeckel (1874) modified by Metschnikoff (1886) and revived by Hy
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