MEDRADSC 3J03 Lecture Notes - Lecture 12: Anterior Interventricular Branch Of Left Coronary Artery, Posterior Interventricular Artery, Right Coronary Artery

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3J03
• Professor: Sandra Charbonneau

Document Summary

Coronary circulation: right coronary artery, right coronary artery right atrium, marginal artery rv, posterior interventricular artery or posterior descending artery both ventricles. Infarct any time a need a not met: myocardium turns in jelly-like substance when it is(cid:374)"t perfused (cid:894)i(cid:373)pa(cid:272)ts pu(cid:373)pi(cid:374)g (cid:272)apa(cid:271)ility(cid:895) Non-modifiable: age, 45-50, sex, males, women post-menopause, lose estrogen (estrogen is a protective factor for cad, heredity. Just being in the cold puts more workload on heart: heavy meal, holidays place stress on people (last straw, treatment, primarily by the coronary vasodilator drug, nitroglycerine, dilation drug, sublingual increases speed of delivery. Myocardial infarction (heart attack: characterized by ischemic death of myocardial tissue, prolonged ischemia over 30-35 minutes causes irreversible cellular damage and muscle death- necrosis, permanent loss of function to the infarcted area of the myocardium. Increased serum levels of cardiac enzymes released by necrotic myocardial cells: troponin- enzyme that is excreted when tissues die, changes in ecg wave, elevated st section in indicative of ha, complications, chf.