24-04-2012, 10:58 PM
i want eeeithe ppt or pdf file on the topic "artificial heart".
24-04-2012, 10:58 PM
i want eeeithe ppt or pdf file on the topic "artificial heart".
25-04-2012, 09:46 AM
to get information about the topic "artificial heart" full report ppt and related topic refer the link bellow
https://seminarproject.net/Thread-artificial-heart https://seminarproject.net/Thread-artifi...art--18133 http://seminarprojectsshowthread.php?tid=5720&google_seo=y1AB+++&pid=37543#pid37543 https://seminarproject.net/Thread-artifi...art?page=2
28-07-2012, 06:34 PM
pls send ppt on artificial heart ppt / Post Reply
03-08-2012, 10:22 AM
ARTIFICIAL HEART
1ARTIFICIAL HEART.ppt (Size: 2.18 MB / Downloads: 68) HEART ANATOMY (CROSSECTION VIEW) The heart has four chambers. Two atria act as collecting reservoirs. Two ventricles act as pumps. The heart has four valves for: Pumping action of the heart. Maintaining unidirectional blood flow. HEART PHYSIOLOGY Deoxygenated blood returns to the heart via the superior and inferior vena cava, enters the right atrium, passes into the right ventricle, and from here it is ejected to the pulmonary artery. Oxygenated blood returning from the lungs enters the left atrium via the pulmonary veins, passes into the left ventricle, and is then ejected to the aorta. PROPERTIES OF BLOOD Medium for transporting: dissolved gases, nutrients, hormones and electrolytes. Removes the waste products of metabolism. Provides protection against the toxins and pathogens. Stabilization of pH and temperature of our body. Blood has the property of clotting that prevents the loss of blood from the body. The oxygen is picked up by blood as it passes through the lungs. Blood is composed of about 46-63 % plasma that contains suspended cells. Plasma is the fluid component. Plasma = 92% water + 7% proteins + 1 % plasma solutes. Proteins include: Hormones Albumins Globulins Fibrinogen FLUID PROPERTIES Intravenous fluids supply fluid volume and electrolytes. These fluids are usually provided for: Expanding intravascular volume Correct an imbalance in fluids or electrolytes Compensate for an ongoing problem that is affecting either fluid or electrolytes. BIOMATERIALS Classes of biomaterials used in medicine are Natural Materials Alloy Metals Composites Ceramics Fabrics Stainless steel Uses for the development of mechanical heart valves pacemakers vascular grafts oxygenators heart assist systems such as total artificial hearts, intra-aortic balloon pumps etc. BIOMATERIALS FOR HEART VALVES Mechanical heart valves are most commonly made from : Silicone Elastomer Prolytic carbon Cobalt Chrome based alloys Titanium The prosthetic valves are made from Materials of biological origin. These are Homografts obtained from human species Xenografts obtained from non-human species pig, cow |
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