CABT Patient Monitoring 2

Question 1

Which waveform component of an arterial blood pressure tracing represents the dicrotic notch?

Accepted Answer

Closure of the aortic valve

Answer

The dicrotic notch on the arterial waveform corresponds to the closure of the aortic valve at the end of systole.

Question 2

A pulse oximeter reading is most likely to be unreliable in a patient with:

Accepted Answer

Severe peripheral vasoconstriction

Answer

Severe peripheral vasoconstriction reduces pulsatile blood flow to the extremities, making it difficult for the pulse oximeter to detect an accurate signal.

Question 3

What is the primary purpose of the 'alarm limit' feature on patient monitors?

Accepted Answer

To alert clinicians when a parameter exceeds safe boundaries

Answer

Alarm limits are set to notify clinicians when physiological parameters deviate outside acceptable ranges, enabling timely intervention.

Question 4

Which lead configuration is standard for continuous 3-lead ECG monitoring in the ICU?

Accepted Answer

Leads II, V1, and V5

Answer

Leads II, V1, and V5 are commonly used in ICU monitoring as they best detect arrhythmias and ischemic changes.

Question 5

In capnography, an abnormally elevated ETCO2 value most often indicates:

Accepted Answer

Hypoventilation or increased CO2 production

Answer

Elevated end-tidal CO2 is typically caused by hypoventilation or conditions that increase CO2 production such as fever or sepsis.

(CABT) Certified Associate in Biomedical Technology Practice Test

(CABT) Certified Associate in Biomedical Technology Practice Test

CABT Patient Monitoring 2