CARDIOLOGY Flashcards
In 70% of patients, the posterior descending artery derives from what?
Right coronary artery.
In 70% of patients, the posterior descending artery derives from what?
Right coronary artery.
Coronary arteries fill during which stage of cardiac cycle?
Diastole. Therefore, conditions or drugs that reduce disastolic filling allow less coronary perfusion.
LAD supplies?
Anterior wall of LV. Septal branch of LAD supplies anterior 2/3 of IV septum.
Circumflex branch supplies?
LA, lateral wall of LV, posterior wall of LV
PDA supplies?
Inferior wall of LV, posterior 1/3 of IV septum
Marginal branch supplies?
RA, RV
SA, AV nodal branches supply
SA and AV nodes. Duh.
Acidosis causes what effect on SV?
Decreases.
Hypoxia causes what effect on SV?
Decreases.
CO increases during exercise initially due to? Later due to?
Increasing SV, THEN increasing HR.
MAP = ?
CO x TPR aka diastolic arterial pressure + 1/3 pulse pressure
Pulse pressure = ?
SBP - DBP
Vitamins that apparently help prevent CAD
Vitamins E and C as well as beta carotene
STrongest predictor for stroke?
HTN
HDL > 60 cancels how many risks?
1
HMG-CoA reductase inhibitors site of action
Liver
Ezetimibe MOA
Cholesterol absorption inhibitor.
Ezetimibe ONLY affects which cholesterol?
LDL
Fibric acids site of action
Blood, as they stimulate lipoprotein lipase
Fibric acids greatest effect on? Least effect on/
Greatest effect on triglycerides. Then LDL, then HDL.
Bile acid sequestrates have no effect on ?
HDL. May or may not actually RAISE triglycerides.
Niacin site of action
Liver
Niacin has the least effect on which lipid?
Triglycerides.