Cardiology Flashcards
Phase 2 of the ventricular cardiac action potential is due to flux of which ion in which direction?
Influx of Ca2+
If there is ST elevation in inferior leads, in which leads would you expect reciprocal depression?
Lateral leads (V5-V6, I and aVL). Remember PAILS acronym
What is the mechanism of action of dobutamine?
Beta 1-adrenoceptror agonist
What pathogen is the most common cause of infective endocarditis?
Staph aureus
What is the most common cause of myocarditis?
Enterovirus
Which drug is most effective in improving systolic function in CCF?
ACE inhibitor
Phase 0 of the ventricular cardiac action potential is due to flux of which ion in which direction?
Influx of Na+
Phase 1 of the ventricular cardiac action potential is due to flux of which ion in which direction?
Efflux of K+
What is the best imaging modality for aortic dissection?
echo (TTE then TOE)
What are the 1st and 2nd most common genes involved in HOCM?
1 Cardiac myosin binding protein C
2 Cardiac beta myosin heavy chain
How do beta blockers help in stable angina?
Reduce myocardial oxygen demand
Phase 3 of the ventricular cardiac action potential is due to flux of which ion in which direction?
Efflux of K+
If there is ST elevation in anterior leads, in which leads would you expect reciprocal depression?
Inferior leads (II, III and aVF). Remember PAILS acronym
What are the 5 types of AMI?
Type 1. Coronary atherosclerotic thrombus
- Mismatch between myocardial O2 supply and demand
- Sudden death due to AMI before ECG or cardiac enzymes can be measured
4a. Due to PCI
4b. Due to in stent thrombosis - Due to CABG
What is the classic cause of an accelerated junctional rhythm?
Digoxin toxicity
