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Flashcards in CARDIOLOGY Deck (122)
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1

In 70% of patients, the posterior descending artery derives from what?

Right coronary artery.

2

In 70% of patients, the posterior descending artery derives from what?

Right coronary artery.

3

Coronary arteries fill during which stage of cardiac cycle?

Diastole. Therefore, conditions or drugs that reduce disastolic filling allow less coronary perfusion.

4

LAD supplies?

Anterior wall of LV. Septal branch of LAD supplies anterior 2/3 of IV septum.

5

Circumflex branch supplies?

LA, lateral wall of LV, posterior wall of LV

6

PDA supplies?

Inferior wall of LV, posterior 1/3 of IV septum

7

Marginal branch supplies?

RA, RV

8

SA, AV nodal branches supply

SA and AV nodes. Duh.

9

Acidosis causes what effect on SV?

Decreases.

10

Hypoxia causes what effect on SV?

Decreases.

11

CO increases during exercise initially due to? Later due to?

Increasing SV, THEN increasing HR.

12

MAP = ?

CO x TPR aka diastolic arterial pressure + 1/3 pulse pressure

13

Pulse pressure = ?

SBP - DBP

14

Vitamins that apparently help prevent CAD

Vitamins E and C as well as beta carotene

15

STrongest predictor for stroke?

HTN

16

HDL > 60 cancels how many risks?

1

17

HMG-CoA reductase inhibitors site of action

Liver

18

Ezetimibe MOA

Cholesterol absorption inhibitor.

19

Ezetimibe ONLY affects which cholesterol?

LDL

20

Fibric acids site of action

Blood, as they stimulate lipoprotein lipase

21

Fibric acids greatest effect on? Least effect on/

Greatest effect on triglycerides. Then LDL, then HDL.

22

Bile acid sequestrates have no effect on ?

HDL. May or may not actually RAISE triglycerides.

23

Niacin site of action

Liver

24

Niacin has the least effect on which lipid?

Triglycerides.

25

Niacin has been shown to exacerbate which disease?

Gout

26

Niacin has what effect on insulin?

Insulin resistance.

27

Increased LFTs can be seen in which classes of lipid lowering anents?

Statins, cholesterol absorption inhibitors, fibric acids, and niacin.

28

Nitroglycerin may also reduce effects of which 2 cause of chest pain?

GERD, esophageal spasm.

29

Electrolytes to keep an eye on during treatment of unstable angina

Potassium to keep K+ levels >4 mEq/L. Magnesium to keep levels >2 mEq/L.

30

When os CABG considered?

Left am stenosis >50%, 3 vessel disease, or history of CAD and DM.