CVT Hemodynamic Monitoring 3

Question 1

In a patient with cardiac tamponade, which hemodynamic pattern is classically observed?

Accepted Answer

Equalization of diastolic pressures in all cardiac chambers

Answer

Cardiac tamponade causes equalization of right atrial, right ventricular diastolic, pulmonary artery diastolic, and PCWP pressures due to external compression.

Question 2

Which condition is most associated with an elevated pulmonary vascular resistance (PVR) with a normal PCWP?

Accepted Answer

Primary pulmonary hypertension

Answer

Primary pulmonary hypertension elevates PVR due to intrinsic pulmonary vascular disease while PCWP remains normal, distinguishing it from left-sided causes.

Question 3

Normal mixed venous oxygen saturation (SvO₂) is approximately:

Accepted Answer

60–75%

Answer

Normal SvO₂ from the pulmonary artery is 60–75%, reflecting the balance between oxygen delivery and consumption by peripheral tissues.

Question 4

A patient's SvO₂ suddenly drops from 70% to 48%. Which condition should be suspected FIRST?

Accepted Answer

Decreased cardiac output

Answer

A sudden SvO₂ drop most commonly indicates reduced cardiac output, causing tissues to extract more oxygen from a diminished supply.

Question 5

Which hemodynamic profile is consistent with hypovolemic shock?

Accepted Answer

Low CVP, low PCWP, low CO, high SVR

Answer

Hypovolemic shock produces low filling pressures (CVP, PCWP), reduced cardiac output, and compensatory vasoconstriction (high SVR).

(CVT) Cardiovascular Technologist Certification Practice Test

(CVT) Cardiovascular Technologist Certification Practice Test

CVT Hemodynamic Monitoring 3