CET Quality Control & Process Improvement 2

Question 1

Which statistical tool plots data points in time sequence to identify trends or shifts in an echocardiography lab's measurement process?

Accepted Answer

Run chart

Answer

A run chart displays data in chronological order, making it effective for detecting trends, shifts, or cycles in a process over time.

Question 2

In echocardiography QC, a 'sentinel event' most accurately refers to:

Accepted Answer

An unexpected event resulting in serious patient harm or death

Answer

A sentinel event is an unexpected occurrence involving death or serious physical or psychological injury, requiring immediate investigation and response.

Question 3

When performing a phantom study to evaluate axial resolution, the technician should measure the minimum separation distance at which two targets appear as:

Accepted Answer

Two distinct, separate reflectors

Answer

Axial resolution is defined as the ability to distinguish two reflectors as separate entities along the beam axis; they must appear as distinct points.

Question 4

A lab notices its mean left ventricular ejection fraction (EF) readings are consistently 5% higher than the reference lab's values. This best represents:

Accepted Answer

Systematic bias

Answer

A consistent directional offset from a reference standard across many measurements indicates systematic bias rather than random error.

Question 5

Which of the following is the PRIMARY purpose of a laboratory accreditation survey by IAC (Intersocietal Accreditation Commission)?

Accepted Answer

To ensure labs meet standardized quality and safety benchmarks

Answer

IAC accreditation verifies that echocardiography laboratories meet established standards for personnel qualifications, equipment, and study quality.

(CET) Certified Echocardiography Technician Practice Test

(CET) Certified Echocardiography Technician Practice Test

CET Quality Control & Process Improvement 2