CHD Physiology2

During Cardiac Catheterization, O2 saturation in the heart are as in the picture:

What is the diagnosis?

• ASD

• VSD

• PDA

• TOF

The patient is 10 years old (30kg, BSA 1ms). If blood flow out of the aorta is 3L/min, what is the amount of blood flow across the ASD?

• 1.5 L/min

• 3 L/min

• 4.5 L/min

• 6 L/min

Blood flow across the Aorta (Qs) in 3 L/min.

What is the blood flow across pulmonary valve (Qp)?

• 1.5 L/min

• 3 L/min

• 4.5 L/min

• 6 L/min

How much do you think your heart can handle shunt from ASD or VSD without failing?

• 1.2 time more

• 1.5 time more

• 2 time more

• 3 time more

How much can your lung accept more blood flow for 60+ years without pulmonary hypertension?

• 1.2 x

• 1.5 x

• 2 x

• 3 x

The picture is obtained when pressure sensor was withdrawn from pulmonary artery (PA) to right ventricle (RV). Y axis is pressure.

What is the diagnosis?

• ASD

• VSD

• AS

• PS

How much extra pressure can your heart work aginst without failing?

• 1.5 time

• 2 time

• 3 time

• It depends

The pressure and O2 saturation in the figure is compatible with what diagnosis?

• ASD

• VSD

• TOF

• D-TGA

Blood from RV can either go through the VSD or out the PA. What is the proportion of blue blood (from RV) going out the PA vs through the VSD?

• 0.5:1

• 1:1

• 2:1

• It cannot be calculated

Patient is 30kg (1 m2)

What are the Qp/Os, Qs, Qp, and Qp/Qs?

• 3 L/min

  1.5 L/min

  0.5:1

• 1.5 L/min

  0.75 L/min

  0.5:1

• 3L/min

  3L/min

  1:1

• 1.5 L/min

  1.5 L/min

  1:1