BCIA Breathing & Capnometry Biofeedback 2

Question 1

In capnometry biofeedback, which metric serves as the primary real-time feedback signal?

Accepted Answer

End-tidal CO2 concentration

Answer

Capnometry biofeedback uses the CO2 concentration at the end of exhalation (EtCO2) as the primary feedback signal to guide the patient toward optimal breathing patterns.

Question 2

What breathing dysfunction is most commonly addressed with capnometry biofeedback?

Accepted Answer

Chronic hyperventilation disorder

Answer

Capnometry biofeedback is most frequently used to identify and treat chronic hyperventilation disorder, training patients to maintain normal EtCO2 levels.

Question 3

Slow paced breathing at resonance frequency primarily improves which physiological parameter?

Accepted Answer

Heart rate variability (HRV)

Answer

Breathing at resonance frequency (~6 breaths/min) creates baroreflex-mediated oscillations in heart rate that maximize HRV, reflecting improved autonomic balance.

Question 4

An EtCO2 reading below what threshold is generally considered indicative of hyperventilation?

Accepted Answer

35 mmHg

Answer

EtCO2 below 35 mmHg falls outside the normal 35–45 mmHg range and is generally considered indicative of hypocapnia or hyperventilation.

Question 5

How does slow diaphragmatic breathing correct blood pH in a person who has been chronically hyperventilating?

Accepted Answer

It normalizes elevated pH caused by respiratory alkalosis

Answer

Chronic hyperventilation causes respiratory alkalosis (elevated pH); slow breathing allows CO2 to rise toward normal, correcting the alkalosis and normalizing pH.

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA Breathing & Capnometry Biofeedback 2