During biocalibrations, which statement is true?

During biocalibrations, which statement is true?

• A. The tech notes should reflect the movements made by the patient
• B. The patient should be supine and still throughout biocalibrations
• C. Biocalibrations are done at the beginning of the study only
• D. Nasal and oral breathing are done on the NPSGs only

Answer: (A)

Biocalibration ties each sensor’s signal to the patient’s actual physiology by having the patient move and sometimes perform breathing maneuvers so the tech can see how the readings respond. Recording exactly which movements were made and when in the tech notes is essential, because it anchors the calibration data to real actions. This lets you distinguish true events from artifacts and confirms that channels were calibrated correctly. Being still and supine throughout isn’t how calibration works, since movement is needed to verify sensor responses. Biocalibrations aren’t restricted to the very start of the study; they can be repeated if sensor placement changes or signals drift. Breathing measurements aren’t exclusive to the nocturnal PSG either; respiratory channels are part of the PSG setup and calibration as needed, not limited to a single portion of the study.

Biocalibration ties each sensor’s signal to the patient’s actual physiology by having the patient move and sometimes perform breathing maneuvers so the tech can see how the readings respond. Recording exactly which movements were made and when in the tech notes is essential, because it anchors the calibration data to real actions. This lets you distinguish true events from artifacts and confirms that channels were calibrated correctly.

Being still and supine throughout isn’t how calibration works, since movement is needed to verify sensor responses. Biocalibrations aren’t restricted to the very start of the study; they can be repeated if sensor placement changes or signals drift. Breathing measurements aren’t exclusive to the nocturnal PSG either; respiratory channels are part of the PSG setup and calibration as needed, not limited to a single portion of the study.