Nov27 M1,2-CHF-CMP-Shock

Question 1

cardiac vs circulatory failure

Answer 1

circulatory is inability of CV system as a whole to meet demand of body (cardiac or non cardiac)
HF is heart prob only

Question 2

HF causes

Answer 2

• decreased contractility (dil CMP, ETOH)
• decreased preload (restricted filling: restrictive CMP, tamponade, mitral, aortic stenosis)
• increased preload
• increased afterload
• electrophgy abnormalities
• aggrav factors

Question 3

HF from loss contract compens and decompens

Answer 3

compens by increasing EDV, more contract

decompens bc limited and curve flattens out

Question 4

why SS activation decompensates in HF

Answer 4

increases energy demands, reduce coronary perfusion, imapried diastole

Question 5

why RAA decompensates in HF

Answer 5

raise in afterload, high preload, edema

Question 6

why hypertrophy decompensates in HF

Answer 6

decrease in wall stress from higher thickness is not 100% efficient

Question 7

eccentric vs concentric hypetrophy: when

Answer 7

eccentric if volume overload

concentric if pressure overload. both to reduce wall stress

Question 8

why dilatation decompensates in HF

Answer 8

higher stress, require more energy.
higher EDP, pulm edema.
diastolic dysfct

Question 9

diastolic vs systolic HF

Answer 9

diastolic from dilated CM, MR, AR. eccentric hypertrophy as result
systolic HF (and diastolic too): htn, restrictive CM, AS, concentric hypertrophy as result

Question 10

CM def

Answer 10

mechanical or electrical disease of myocardium: inappropriate hypertrophy or dilatation of ventricle