TB Test Quality Assurance and Improvement 2

Question 1

A TB testing clinic notices a 15% rate of indeterminate TST results over the past month. What is the BEST first step in a quality improvement process?

Accepted Answer

Retrain all staff on proper intradermal injection technique

Answer

High indeterminate or invalid TST results most often stem from improper intradermal technique, making staff retraining the primary corrective action.

Question 2

Which metric is MOST useful for monitoring the quality of tuberculin skin test (TST) administration over time?

Accepted Answer

Rate of documented Mantoux technique errors per 100 tests

Answer

Tracking documented technique errors per 100 tests directly measures administration quality and identifies trends requiring correction.

Question 3

A quality audit finds that TST readings are being documented as positive at 8 mm when the CDC threshold for an immunocompromised patient is 5 mm. This represents a:

Accepted Answer

False negative documentation error

Answer

Recording 8 mm as positive for a patient whose threshold is 5 mm means true positives at 5–7 mm are being incorrectly classified as negative—a false negative error.

Question 4

Which component of a Plan-Do-Study-Act (PDSA) cycle involves collecting baseline data before implementing a change in TB testing workflow?

Accepted Answer

Plan

Answer

The Plan phase includes identifying the problem, setting objectives, and collecting baseline data to measure improvement against.

Question 5

A TB clinic wants to reduce patient wait times between TST placement and reading. Which quality tool BEST maps the steps in the current process to identify delays?

Accepted Answer

Process flow diagram (flowchart)

Answer

A process flowchart visually maps each step in a workflow, making it easy to identify bottlenecks and unnecessary delays.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Quality Assurance and Improvement 2