What does "auto-PEEP" refer to?

What does "auto-PEEP" refer to?

• A. The unintended accumulation of pressure in the lungs at the end of expiration
• B. The forced inflation of the lungs during expiration
• C. The alternative positive pressure during inhalation
• D. The pressure exerted by abdominal muscles during breathing

Answer: (A)

Auto-PEEP, or intrinsic PEEP, refers to the unintended accumulation of pressure in the lungs at the end of expiration. This phenomenon occurs when there is incomplete exhalation, resulting in residual air remaining in the lungs. The presence of auto-PEEP can lead to increased work of breathing and can impair oxygenation and ventilation. It is particularly common in patients with obstructive lung diseases, where airflow obstruction can prevent full expiration. Understanding auto-PEEP is crucial for clinicians when managing ventilation settings, as it can significantly impact the effectiveness of mechanical ventilation and the patient's overall respiratory mechanics.

Auto-PEEP, or intrinsic PEEP, refers to the unintended accumulation of pressure in the lungs at the end of expiration. This phenomenon occurs when there is incomplete exhalation, resulting in residual air remaining in the lungs. The presence of auto-PEEP can lead to increased work of breathing and can impair oxygenation and ventilation. It is particularly common in patients with obstructive lung diseases, where airflow obstruction can prevent full expiration. Understanding auto-PEEP is crucial for clinicians when managing ventilation settings, as it can significantly impact the effectiveness of mechanical ventilation and the patient's overall respiratory mechanics.