Anaesthesia and Critical Care Flashcards
what happens to the heart rate in neurogenic shock?
Bradycardia (loss of sympathetic input)
What happens to the cardiac output in septic shock?
Increased CO
what happens to the SVR in septic shock?
Decreased SVR
what happens to the cardiac output in cariogenic shock?
Decreased CO
what happens to the cardiac output in cardiogenic shock?
Increased SVR
what happens to the central venous pressure in cariogenic shock?
Increased CVP
what happens to the central venous pressure in septic shock?
Decreased CVP
where is a trachoestomy incision made in adults?
between 2nd + 4th tracheal rings
how much blood is lost in type II haemorrhagic shock?
750-1500ml (15-30%)
how much blood is lost in type III haemorrhagic shock?
1500-2000ml (30-40%)
how much blood is lost in type IV haemorrhagic shock?
> 2000 (>40%)
when should a tracheostomy tube be changed at the earliest?
3 days post op
what is the cardiac index?
Assessment of cardiac output based on a persons size. Cardiac output / total surface area m2.
Normal 2.5-4.0L/MIN/M2
In hypocalcaemia what happens to the QTc interval?
Prolonged QTc
what is the average normal stroke volume?
70ml/beat
what is the action to stimulation of beta-2 receptors?
Vasodilation
Bronchodilation
what substance do beta receptors activate?
Adenylate Cyclase