ATC Diagnostic Procedures & Interpretation 2

Question 1

What is the normal resting heart rate range for a healthy adult?

Accepted Answer

60–100 bpm

Answer

A resting heart rate of 60–100 bpm is considered normal for adults.

Question 2

Compared with land, what is the typical heart rate response at rest during neck-deep immersion in thermoneutral water?

Accepted Answer

Slightly lower due to increased venous return and stroke volume

Answer

Hydrostatic pressure raises central blood volume and stroke volume, which usually lowers heart rate slightly.

Question 3

Which blood pressure reading is classified as normal under ACC/AHA guidelines?

Accepted Answer

118/76 mmHg

Answer

Normal blood pressure is below 120/80 mmHg.

Question 4

A client's resting SpO2 reads 88% on room air before a session. What is the most appropriate action?

Accepted Answer

Withhold aquatic exercise and refer for medical evaluation

Answer

Resting SpO2 below about 90% warrants medical clearance before immersion exercise.

Question 5

Which change on standing indicates orthostatic hypotension?

Accepted Answer

Systolic drop of 20 mmHg or more or diastolic drop of 10 mmHg or more

Answer

Orthostatic hypotension is a systolic drop of ≥20 or diastolic drop of ≥10 mmHg within 3 minutes of standing.

ATC - Aquatic Therapy Certification Practice Test