Flashcards in Acute circulatory failure Deck (10):
What is shock?
Acute circulatory failure leading to inadequate tissue perfusion with oxygen and nutrients
What is CARDIO OUTPUT?
HR x SV
How is BP calculated?
CO x TPR
What is stroke volume?
Venous return and cardiac function
So if shock = lack of blood pressure, then what can shock be classified into?
CO = HR x SV - Cardiogenic
TPR - Distributive
What are the causes of cardiogenic shock?
Depressed contractiliy - AMI, Cardiomyopthay, myocarditis, drug toxicity
Acute valve dysfxn - rupture
Arrhythmias - too slow/too fast to support CO
What are the causes of hypovolaemic shock?
Decreased venous return due to inadquate intravascular volume so
Haemorrhage, GI losses, Burns
What are the causes of distributive shock?
Anaphylaxis, sepsis, drug toxicity
Decreased venous return - PE, Tension pneumo, cardiac tamponade