Certified Pulmonary Function Technologist (CPFT) Practice Exam

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Prepare for the Certified Pulmonary Function Technologist Exam with flashcards and multiple-choice questions. Each question comes with hints and explanations. Get started on your path to certification today!

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If a Nitrogen washout test shows a sudden single spike in nitrogen, what does this indicate?

The test should be discarded
Moisture entered the system but it does not ruin the test
The patient has a respiratory issue
The equipment is malfunctioning

The correct answer is: Moisture entered the system but it does not ruin the test

A sudden single spike in nitrogen during a Nitrogen washout test typically indicates that there is moisture in the system, which can temporarily affect the nitrogen concentration readings. Moisture can introduce irregularities in the measurements without completely compromising the validity of the test. In this context, while the spike is an anomaly, it does not automatically nullify the entire test. Instead, it suggests that something in the testing environment may have influenced the results, but the overall data can often still be interpreted correctly if proper precautions are taken. Therefore, acknowledging the presence of moisture impacting the test allows for a nuanced understanding of the results, indicating that while the spike should be noted, the integrity of the test is not entirely ruined.