Which postoperative maneuver is most commonly used to increase functional residual capacity?

Which postoperative maneuver is most commonly used to increase functional residual capacity?

• A. Early ambulation
• B. Incentive spirometry
• C. Deep breathing
• D. Intermittent positive pressure breathing

Answer: (B)

Postoperative shallow breathing from pain reduces the volume of air remaining in the lungs at the end of expiration, known as functional residual capacity. The maneuver that most effectively and consistently increases this volume is incentive spirometry. By giving the patient a device to guide and visually reinforce slow, sustained maximal inspirations, it expands and recruits collapsed alveoli, raises transpulmonary pressure, and keeps airways open. This targeted deep-breathing approach directly increases FRC and helps prevent atelectasis, which is why it’s the commonly used postoperative technique. Other strategies can aid recovery and overall ventilation—early ambulation improves circulation and can reduce complications, and deep breathing without feedback can help, but incentive spirometry provides specific, measurable encouragement to take deep breaths and maximize inspiratory effort. Intermittent positive pressure techniques exist but are less commonly used as the primary method to boost FRC.

Postoperative shallow breathing from pain reduces the volume of air remaining in the lungs at the end of expiration, known as functional residual capacity. The maneuver that most effectively and consistently increases this volume is incentive spirometry. By giving the patient a device to guide and visually reinforce slow, sustained maximal inspirations, it expands and recruits collapsed alveoli, raises transpulmonary pressure, and keeps airways open. This targeted deep-breathing approach directly increases FRC and helps prevent atelectasis, which is why it’s the commonly used postoperative technique.

Other strategies can aid recovery and overall ventilation—early ambulation improves circulation and can reduce complications, and deep breathing without feedback can help, but incentive spirometry provides specific, measurable encouragement to take deep breaths and maximize inspiratory effort. Intermittent positive pressure techniques exist but are less commonly used as the primary method to boost FRC.