Shock Practise questions and Answers
1. what is shock?: circulatory failure associated with decreased perfusion, resulting in tissue
hypoxia
2. what is often seen with shock (vitals)?: hypotension (MAP <65)
3. what is the pathophys of shock?: decreased tissue perfusion due to inadequate O2 delivery or
inadequate consumption of O2 by tissues -> hypoxia at a cellular level, cells switch to anaerobic
metabolism
4. what are the cons of anaerobic metabolism?: inefficient ATP production accumulation of
lactic acid, lowering cell pH
cellular dysfunction
5. what are the stages of shock?: 1. compensated shock (via tachycardia or
vasoconstriction)
2. shock (compensatory mechanisms fail -> hypoperfusion)
3. end organ dysfunction
6. what is distributive shock?: severe peripheral vasodilation
7. what can cause distributive shock?: septic shock SIRS
anaphylactic shock
neurogenic shock
toxin related
endocrine shock
8. what can cause cardiogenic shock?: myocardial arrhythmic
valvular
9. what is cardiogenic shock?: pump malfunction
10.what is hypovolemic shock?: decreased volume
11.what causes hypovolemic shock?: hemomrrhagic or non-hemorragic causes
12.what is obstructive shock?: preload impairment
13.what can cause obstructive shock?: PE
pneumothorax
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, Shock Practise questions and Answers
cardiac tamponade
14.what affects BP?: cardiac output x systemic vascular resistance
15.what is cardiac output?**: heart rate x stroke volume **
16.what is systemic vascular resistance (SVR)?: 80(MAP-central venous pres- sure)/CO
17.what affects SVR?: blood viscosity vessel
length
vessel diameter
2/4
1. what is shock?: circulatory failure associated with decreased perfusion, resulting in tissue
hypoxia
2. what is often seen with shock (vitals)?: hypotension (MAP <65)
3. what is the pathophys of shock?: decreased tissue perfusion due to inadequate O2 delivery or
inadequate consumption of O2 by tissues -> hypoxia at a cellular level, cells switch to anaerobic
metabolism
4. what are the cons of anaerobic metabolism?: inefficient ATP production accumulation of
lactic acid, lowering cell pH
cellular dysfunction
5. what are the stages of shock?: 1. compensated shock (via tachycardia or
vasoconstriction)
2. shock (compensatory mechanisms fail -> hypoperfusion)
3. end organ dysfunction
6. what is distributive shock?: severe peripheral vasodilation
7. what can cause distributive shock?: septic shock SIRS
anaphylactic shock
neurogenic shock
toxin related
endocrine shock
8. what can cause cardiogenic shock?: myocardial arrhythmic
valvular
9. what is cardiogenic shock?: pump malfunction
10.what is hypovolemic shock?: decreased volume
11.what causes hypovolemic shock?: hemomrrhagic or non-hemorragic causes
12.what is obstructive shock?: preload impairment
13.what can cause obstructive shock?: PE
pneumothorax
1/4
, Shock Practise questions and Answers
cardiac tamponade
14.what affects BP?: cardiac output x systemic vascular resistance
15.what is cardiac output?**: heart rate x stroke volume **
16.what is systemic vascular resistance (SVR)?: 80(MAP-central venous pres- sure)/CO
17.what affects SVR?: blood viscosity vessel
length
vessel diameter
2/4
