IM PEARLS Flashcards
(455 cards)
Underlying cause of Chest Pain in Stable Angina
Fixed atherosclerotic stenosis of coronary arteries - Increased myocardial oxygen demand - LACTIC ACIDOSIS
Precursor lesion of atherosclerosis
FATTY STREAK containing foam cells (macrophages)
Why does pain radiate to the left arm in Stable Angina
Synapses shared with C4 and C5 sensory fibers
What does pain radiating to the upper back (trapezius) indicate?
PERICARDIAL involvement
Major Risk Factors for Chronic Stable Angina
DM, SMOKING, family history of CAD or premature CAD (M<50(F)
Minor Risk Factor for Chronic Stable Angina
Age, Obesity (independent RF), Estrogen Deficiency (Males & Menopaused), Homocysteinemia
Best initial test for Stable Angina; What are the Expected Findings?
ECG showing ST DEPRESSION, FLATTENING OF T WAVES sec to ischemia
Expected Findings on Cardiac Enzymes in Stable Angina
Cardiac Enzymes NOT ELEVATED
Next best step in management of Stable Angina if ECG is nondiagnostic
EXCERCISE STRESS TESTING or Treadmill Stress Test (for MI Risk Stratification: (+) High Risk, (-) Low Risk)
If unable to walk, what stress test will you order in a Stable Angina patient?
DOBUTAMINE or DYPRIDAMOLE Stress Test (Increase Heart Rate and Contractility)
Stable Angina patient has BASELINE ECG ABNORMALITIES, what stress test is appropriate?
NUCLEAR STRESS TEST (Thallium, Sestamibi)
Most Appropriate Treatment in Stable Angina
LIFESTYLE MODIFICATION, OPD: Aspirin, Beta Blockers, Statins, Nitrates - Symptomatic Relief; NO Mortality Risk Reduction
Complications associated with Stable Angina
ACUTE MYOCARDIAL INFARCTION, ANEURYSMS
Patient’s chest pain unrelieved by rest or nitrates
UNSTABLE ANGINA (Crescendo Angina)
If Stress Test is Positive, what is the next Best Step in Management?
ANGIOGRAPHY (Preventive in MI), start ANTICOAGULATION, ASPIRIN, CLOPIDOGREL, NITRATES and BETA BLOCKERS
Underlying pathology in MI
RUPTURED ATHEROSCLEROTIC PLAQUE
Blood vessel involved in Acute MI
LEFT ANTERIOR DESCENDING ARTERY
Heart Wall involved in Acute MI
ANTEROSEPTAL WALL
Heart Wall involved in ECG Leads V1, V2
SEPTAL WALL (supplied by Left Anterior Descending)
Heart Wall involved in ECG Leads V3, V4
ANTERIOR WALL (supplied by Left Anterior Descending)
Heart Wall involved in ECG Leads II, III, aVF
INFERIOR WALL (supplied by Right Coronary Artery)
Heart Wall involved in ECG Leads I & aVL, V5 & V6
LATERAL WALL (supplied by Left Circumflex Artery)
2 Forms of Acute MI: Distinguish the two.
STEMI: Q Waves, new LBBB, ST elevations in 2 or more contiguous leads or chest leads (Noncontiguous Leads=PERICARDITIS); NSTEMI: T Wave inversion, ST Depression
Which patient population will MI present in atypical fashion?
ELDERLY (Autonomic Nervous System manifestations are subtle or irregular) and DIABETICS