mechanical support Flashcards

1
Q

patient with LVAD with decreased PI and high pump power? LDH and bili up?

A

pump thrombosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

in what process is aortic balloon pump CI?

A

acute aortic insufficiency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

immediate complications of LVAD?

A

right heart failure, device malposition, thombosis, suck down, bleeding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the only programmable parameter in a VAD?

A

pump speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

north south syndrome, what is it?

A

adequate native CO with worsening RF leading to a more distal mixing cloud, leading to upper body hypoxemia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how would one assess for north south syndrome?

A

comparing right and left radial arterial ABG and looking at post ox gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

changes to make to improve to improve north south?

A

changing to central cannulation, increasing ECMO flow, changing to VV ECMO if cardiac function has improved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

2 mechanisms in which an IABP inflates?

A

EKG and aortic pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

on EKG when does IABP inflate and deflate?

A

inflate mid t wave- start of diastole

deflate on R wave- start of systole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

if using aortic pressure when does balloon inflate?

A

on dicrotic notch(aortic valve closure)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

early balloon inflation can cause what?

A

increased afterload and inc myocardial oxygen demand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

why does pulsatility index drop in pump thrombosis?

A

the thrombus is in the way of the LV contracting more through the impellar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

treatment for pump thrombosis?

A

cna potentially use thrombolysis but definitive tx is pump exchange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

suction event causes what mechanical complication?

A

contact between the LV wall and cannula causing VT, but VT itself can cause a suction event

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

mechanical parameters on suction event?

A

dec flow, dec PI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

automatic compensation when a suction event occurs?

A

VAD goes to a preset low flow to ammeliorate suction