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Respiratory Therapist

Category - Patient Evaluations and Recommendations

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A patient has 64 impaired respiratory events during an 8-hour recording period. What is her apnea hypopnea index(AHI)?

Explanation

Answer: D - The patient’s AHI 8.

The AHI is calculated by dividing the hours of the study by the number of disturbances. A patient’s AHI is also referred to as a respiratory disturbance index or RDI. An index over 5 is considered abnormal, over 20 is mild, 20-25 is moderate, and greater than 50 is severe.

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