1Term for impaired blood flow to myocardium
Myocardial ischemia
2Low oxygen in myocardium caused by imbalance in blood supply to myocardium and myocardial demands for oxygen.
Myocardial hypoxia
3Causes of myocardial hypoxia
1 atherosclerosis
2 vasospasm
3 thrombosis
4Causes of higher myocardial oxygen demand
1 stress
2 exercise
3 cold
5Chest pain caused by myocardial infarction
Substernal chest pain
6Type of chest pain. Prolonged pain at rest. May precede myocardial infarction
Unstable angina
7Pain occurs with increased demand on heart and is relieved by rest
Classic or exertion angina
8Caused by spasms of coronary arteries at rest
Variant angina
9Triggers for angina pectoris
Physical/ emotional stress
10Immediate treatment for angina pectoris
1 rest
2 nitroglycerin
11Most common cause of obstruction of coronary artery
Atherosclerosis
12Cause of myocardial cell death (necrosis)
Prolonged ischemia
13Tissue that replaces necrotic myocardial cells
Scar tissue
14Does replacement tissue contract or conduct nerve impulses
No
15Effect of myocardial infarction on contractile ability of myocardium
Reduce ability to contract
16Does a myocardial infarction increase or decrease cardiac output
Decrease
17Does the effect on cardiac output increase or decrease blood pressure and tissue perfusion
Decrease
18Name 3 events that can cause a myocardial infarction
1 thrombus from atheroma
2 vasospasm
3 thrombus may break away
19Identify the warning signs of a myocardial infarction
Pressure, heaviness, burning in chest, SOB, weakness, fatigue, nausea, indigestion, anxiety, fear, pain, substernal, crushing, radiation