Lecture 12 - Shock Flashcards
1
Q
What does the term ‘shock’ describe?
A
Acute circulatory failure with either inadequate or inappropriately distributed tissue perfusion resulting in general lack of oxygen supply to cells.
2
Q
What is cardiogenic shock?
A
Inability of the heart to eject enough blood.
Due to ischaemic cardiac damage/arrhythmias.
3
Q
What is mechanical shock?
A
Restriction on filling of heart.
Due to cardiac tamponade.
Obstruction to blood flow through lungs.
Due to pulmonary embolism.
4
Q
What is hypovolaemic shock?
A
Loss of circulating fluid volume.
Due to haemorrhage.
5
Q
What is normovolaemic/distributive shock?
A
Uncontrolled fall in peripheral resistance.
Due to dramatic drop in arterial pressure/sepsis/anaphylaxis
6
Q
What is the connection between BP, CO and TPR?
A
BP = CO x TPR
