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The LAD gives off two types of branches: septals and diagonals. Septals originate from the LAD at 90 degrees to the surface of the heart, perforating and supplying the anterior 2/3 of the interventricular septum. Diagonals run along the surface of the heart and supply the lateral wall of the left ventricle and the anterolateral papillary muscle.
Myocardial infarction; Other names: Acute myocardial infarction (AMI), heart attack: A myocardial infarction occurs when an atherosclerotic plaque slowly builds up in the inner lining of a coronary artery and then suddenly ruptures, causing catastrophic thrombus formation, totally occluding the artery and preventing blood flow downstream to the heart muscle.
The most serious risks are death, stroke, ventricular fibrillation (non-sustained ventricular tachycardia is common), myocardial infarction (heart attack, MI), and aortic dissection. A heart attack during or shortly after the procedure occurs in 0.3% of cases; this may require emergency coronary artery bypass surgery. [13] Heart muscle injury ...
Dr. Jeremy London is a heart surgeon and a heart attack survivor. He operates on diseased hearts, but like many people, he ignored his own symptoms of a coronary artery blockage until it became an ...
As a result, the myocardium continues to demand oxygen but is not adequately supplied by the coronary artery. This imbalance leads to ischemia, damage, and in some cases can lead to death of the myocardium tissue, causing a heart attack (myocardial infarction). A proposed disease hypothesis for SCAD
Life in 2021 returned to something resembling normal, with stadiums again full, lockdowns eased and kids back in class. But there were also events to remind us that true normal still remains a way ...
Based on a global registry of 102,341 patients, the GRACE risk scoreestimates in-hospital, 6 months, 1 year, and 3-year mortality risk after a heart attack. [34] It takes into account clinical (blood pressure, heart rate, EKG findings) and medical history. [ 34 ]
Wellens' syndrome is an electrocardiographic manifestation of critical proximal left anterior descending (LAD) coronary artery stenosis in people with unstable angina. Originally thought of as two separate types, A and B, it is now considered an evolving wave form, initially of biphasic T wave inversions and later becoming symmetrical, often ...