Ischemic Heart Disease Flashcards
types of ischemic heart disease
Angina Pectoris Chronic stable angina Unstable Angina Vasospastic (Prinzmetal's angina) Myocardial Infarction
angina caused by paroxysmal chest squeezing or pressure (can have sensation of smothering or impending doom)
angina pectoris
angina exacerbated by physical activity and relieved by rest or SL nitrogen
chronic stable angina
angina- increasing pattern of pain in previously stable patients (less responsive to meds, lasts longer, occurs with rest or little exertion)
unstable angina
angina occurring in pts due to a spasm of the coronary artery (more likely in morning, at rest. NOT brought on by exertion or emotional stress) Seen in young pts, smokers, or illicit drug users
Prinzmetal’s angina
how do you diagnose stable ischemic heart disease?
stress testing
drugs that decrease myocardial O2 demand
nitrates
calcium channel blockers
beta blockers
this drug increases myocardial O2 delivery by reversing coronary spasm
nitrates
these drugs relax resistance vessels (decrease afterload)
nitrates
CCB
beta blockers
these drugs relax capacitance vessels (decrease preload)
nitrates
CCB
these drugs block sympathetic influence on the heart (decrease contractility, HR, and O2 demand)
BB
these drugs dilate coronary arteries, increasing oxygen supply
nitrates
these drugs cause all segments of the vascular system to relax, resulting in pooling of blood in the veins (decreasing preload and work). They also dilate coronary vasculature and increase blood supply to the heart. Also decreases platelet aggregation
nitrates
this class has significant first pass effect in the liver, so you should distribute it transdermally or sublingually
nitrates
acute adverse effects of this drug include HA, orthostatic hypotension, facial flushing, and tachycardia
nitrates
tolerance with this drug occurs rapidly and manifests as tachyphylaxis (should be given 8 hours off per day)
nitrates