Ultrasound

Question 1

Bernoulli Equation for estimating pulmonary pressure on echo

Answer 1

RVSP = 4(Tricuspid jet velocity)^2 + RAP

Question 2

2 formulas for calculating MPAP

Answer 2

MPAP = (PASP - 2*PADP)/3

MPAP = 90 - (PAAT * 0.62)

PASP = pulmonary artery systolic pressure
PAAT = pulmonary artery acceleration time

Question 3

CVP with an IVC diameter of < 1.5

Answer 3

0-5

Question 4

CVP with IVC diameter of 1.5-2.5 and > 50% collapse of IVC

Answer 4

6-10

Question 5

CVP with IVC diameter of 1.5-2.5 and < 50% collapse of IVC

Answer 5

11-15

Question 6

CVP with IVC diameter of > 2.5 and < 50% collapse of IVC

Answer 6

16-20

Question 7

CVP with IVC diameter of > 2.5 and 0% collapse of IVC

Answer 7

> 20

Question 8

Cardiac output formula from echo

Answer 8

CO = VTI * (Aorta diameter/2)^2 * Pi * HR