Cardio Flashcards
Dx stable angina?
- EKG
- Stress test
- Angiography
When to measure cardiac enzymes in angina?
Acute chest pain > 1 HR
Drug contraindicated with quinidine?
Amiodrone
Decrease quinidine clearance by kidney resulting in fatal arrhythmia
Nitrate formulas and their rout of administration
- Isosorbide mononitrate = oral no 1st bypass metabolism (Tab)
- Isosorbide dinitrate = max effect in 6 min (sublingual)
- Glyceryl trinitrate = max effect in 4 min (sublingual)
- Erythrityl tetranitrate = mixed w/ lactose (sublingual)
MC SE of CCB? (Amlodipine)
Peripheral edema
Low BP
Cough
Lung edema
Due to vasodilation
Drugs improve mortality in MI?
BB
ACEI/ARB
Aspirin (time dependent)
Statins
Drug contraindicated in anaphylaxis?
Atropine if tachycardia
Lab monitoring with amiodrone
LFT
Thyroid (hypo > hyper)
Every 6 months
No need for CXR or slit lamp
SE of amiodrone
Liver + thyroid toxicity
Lung toxicity: cough and dyspnea + interstitial filtrates on CXR
ARDS
Corneal deposits don’t effect vision.
Drugs contraindicated with BB? Why?
CCB
Verapamil + diltiazem
Cause bradycardia and effect AV conduction.
MCC of drug induced angioedema?
ACEI = increase levels of bradykinin
ECG in inferior MI
ST elevation in II, III, aVF
What artery causes inferior MI
Rt coronary artery
Left circumflex artery
ECG findings of left circumflex artery MI?
- ST elevation in II = III and ST-depression in V1-3 or ST-elevation in I + aVF
ECG of Rt coronary artery MI
ST elevation in III > II
ST-Depression in I and aVF
ECG of left anterior descendant coronary artery?
ST elevation or Q wave in any leads V1-V6 + I and aVF
Drug worsen CHF? Why?
Vasopressin
Vasoconstricts arteries and veins causing fluid retention and worsen low Na
Mechanism of action of nitroglycerin
Dilates veins, arteries, and arterioles.
Reduce LV preload + after load
Reduce oxygen demand
What’s angina decubitus
Angina when lying down without cause.
Cause of angina decubitus
Gravity redistributes fluids and make the heart work harder.
Dose of aspirin given in acute MI?
162-325 mg uncoated aspirin. (Not enteric asa which has delayed effect).
What determines cardiac oxygen demand
Tension Preload After load Contractility HR
DM drugs contraindicated in CHF? Why?
Thiazolidinediones (pio/rosiglitazone)
Cause fluid retention
MVP murmur
Midsystilic click
Late systolic murmur