cardio block 6 7

Question 1

what would be the affects of exercise in a pt who takes flecainide

Answer 1

prolonged QRS
remmber normally in exercise QRS will be decreased
QRS determined by the phase 0 slope

Question 2

vasodialtors in exercise

Answer 2

adenosine and lactate

Question 3

This patient’s cyanosis and widely split S2 suggest

Answer 3

delayed RV emptying Pum stenosis

Question 4

drugs have decreased antiarrhythmic effects at faster heart rates and are associated with the development of torsades de pointes at slower heart rates.

Answer 4

reverse use dependence

alll EXCEPT AMIODARONE

Question 5

non tender macules on palm and sole

Answer 5

janeway

infective endo

Question 6

subendothelial immune complex depo in which vasculitis

Answer 6

henoch schonlen
puprura on buttocks legs
arthralgia
GI pain (intussusception)

Question 7

subendothelial hyaline depo

Answer 7

arteriosclerosis in essential HTN

Question 8

prosthetic valve endocarditis caused by

Answer 8

staph epidermis novobicin sensitive due to biofilm production
staph aureus can also cause thsi

Question 9

73 years old pt with adenocarcinoma of colon

mitral valvular vegetations interwoven with fibrin strands and mononuclear cells…… can be pulled off easily

Answer 9

non bacterial endocarditis
Some adenocarcinomas (e.g., colon, pancreas) excrete procoagulant factors (e.g., tissue factor, cancer procoagulant), resulting in sterile vegetations (nonbacterial thrombotic endocarditis) composed predominantly of platelets. These white thrombi are easily dislodged from heart valves, placing patients at high risk of developing tissue infarctions (e.g., strokes, myocardial infarctions).

Question 10

non bacterial endo carditis main finding rregarding the valve vegetations

Answer 10

not calified

loose …. composed of platelets

Question 11

most common site for atheroscletic plaque formations

Answer 11

abd aorta > coronary arteries> popliteal> internal carotid

Question 12

function of pdgf in atherosclerosis

Answer 12

Platelet-derived growth factor is a growth factor that binds to tyrosine kinase receptors and stimulates the transition of cells from the G1 phase to the S phase. PDGF is released at atherosclerotic lesion sites by platelets and macrophages and stimulates proliferation and migration of smooth muscles cells in the tunica intima,

Question 13

Smoking is the strongest modifiable predisposing factor for

Answer 13

abdominal aorta aneurysm

Question 14

vasospastic angina

Answer 14

no elevation in cardiac biomarkers BUT ST ELEVATION

Question 15

pt has pain on exertion
doesnt relieve after rest
No st elevation
no cardiac biomarkers

Answer 15

unstable angina

thrombosis with incompltete coronary art occlusion

Question 16

drug that worls by selectively inhibiting late sodium influx into cardiac cells

Answer 16

ranolazine

makes O2 more efficient