Examen Integrado De Residencias - Kinesiología Practice Questions - Examen Integrado De Residencias De La Salud - Kinesiología (Argentina) Exam

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During a routine ventilator check in the ICU, the kinesiologist observes an abrupt rise in Peak Inspiratory Pressure (Ppeak) from 25 to 38 cmH2O, while the Plateau Pressure (Pplat) remains unchanged at 18 cmH2O with a constant square inspiratory flow of 60 L/min (1 L/s). What is the primary pathophysiological cause of this change?

An acute increase in airway resistance (Raw), such as bronchospasm, endotracheal tube kinking, or secretion accumulation A severe decrease in lung compliance, such as acute pneumothorax or worsening pulmonary edema Development of dynamic hyperinflation with significant intrinsic PEEP (auto-PEEP) Patient-ventilator asynchrony resulting in excessive tidal volume delivery

Correct Answer:

An acute increase in airway resistance (Raw), such as bronchospasm, endotracheal tube kinking, or secretion accumulation

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