Certified Pulmonary Function Technologist (CPFT) Practice Exam

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Prepare for the Certified Pulmonary Function Technologist Exam. Utilize flashcards and multiple-choice questions, with hints and detailed explanations for each. Ensure your success and confidence in the exam!

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What is the optimal panting rate for a patient during plethysmography?

  1. 30-60 breaths per minute

  2. 60-120 breaths per minute

  3. 120-180 breaths per minute

  4. 0-30 breaths per minute

The correct answer is: 60-120 breaths per minute

The optimal panting rate during plethysmography is crucial for obtaining accurate measurements of lung volumes and airway resistance. A panting rate of 60-120 breaths per minute allows for sufficiently rapid breathing that promotes uniform ventilation and helps to prevent air trapping, ensuring that the lung dynamics being studied reflect their true physiological state. This panting frequency strikes a balance between being fast enough to maintain airflow without producing excessive fatigue or discomfort for the patient. Breathing at this rate allows for clear demarcation between the inspired and expired air volumes, which is essential when measuring changes in lung volume and resistance accurately. In contrast, a slower panting rate could lead to less effective volume measurements due to inadequate airflow, while a rate that is too fast may not allow the patient to maintain control and could introduce variability in the data collected. Thus, 60-120 breaths per minute is recognized as the ideal range to ensure reliable and reproducible results in plethysmography.