EEMB 50 Non Infectious Diseases
EEMB 50 Non Infectious Diseases
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This 2 page Reader was uploaded by Gabriela Lopez on Friday April 25, 2014. The Reader belongs to a course at University of California Santa Barbara taught by a professor in Fall. Since its upload, it has received 173 views.
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Date Created: 04/25/14
EEMB 50 April 25 2014 Lecture 12 Mending a Broken Heart 0 Fixing what is broken 1 Angioplasty and stents 2 Coronary artery bypass surgery 3 Valve replacement 4 Pacemakers 5 Heart transplants 0 Plaque never goes away 0 How do you fix an artery with plaque that blocks blood ow 0 Scraping would not work because it is not on the wall it in in the wall 0 Angioplasty is the technique of mechanically widening narrowed or arteries that are obstructed 1 Balloon angioplasty the procedure of passing an empty and narrowed balloon on guide wire known as a balloon catheter through narrowed locations It is then in ated enough for blood to be able to pass through It is a problem though because one the balloon is removed the openings narrow again Stents is a small mesh tube that is used for widening narrow arteries It is placed in an artery and keeps the ow of blood moving Stent implantations have been proven to not help after results were compared of those patients who had and did not have stents 7 Patients like stents however because they don t have to change their eating habits or exercise routine 39gtP 0 Coronary artery bypass surgery 1 Much more invasive technique used to reduce risk of death from by Coronary Artery disease and ease pain of angina it is an open heart surgery 2 It consist of taking a healthy artery or vein from the body and connecting it stitching grafting to the blocked coronary artery 3 The grafted artery bypasses goes around the blocked portion of the artery and creates a new path for oxygen rich blood to ow to the heart muscle 4 During this surgery the heart is never stopped only slowed down 0 Valve replacement 1 We can have mechanical or biological valves 2 Mechanical valves last 20 30 years but require lifelong blood thinners 3 Biological heart valves do not require blood thinners but only last 1015 years 0 Pacemakers 1 Deal with the electrical problems of the heart not the plumbing 2 They are now implanted into the chest 0 Heart transplants 1 Are necessary after a series of heart attacks chronic congestive heart failure 2 Christiaan Barnard was the first doctor to perform the first heart transplant surgery in 1967 3 Lewis Washkansky was the first man to receive a heart transplant but died days after due to infection in his lungs 4 However supply does not exceed demand of hearts Opt in only those who have given explicit consent are potential donors People do not really get around to it and so many people want to change it so that more people on the waiting list have more opportunities to get a heart Opt out anyone who has not refused consent is a potential donor In some countries organs can be bought but there are ethical debates on that issue People must be on a waiting list in areas close to them there can t be a national waiting list because organs only last certain amount of hours outside of the body Some people have suggested Xenotransplants Xenotransplants using animal organs as transplants for humans A line of pigs in particular has been developed Whose hearts do not have markers that will make our body reject them There are ethical issues with this along with animal rights Violations
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