Not all hypotension after intubation comes from sedation.
Sometimes the ventilator is the problem.
Dynamic hyperinflation occurs when a patient does not have enough time to fully exhale before the next breath begins. Air becomes trapped in the lungs, end-expiratory lung volume rises, and intrinsic PEEP develops.
This is auto-PEEP.
Auto-PEEP is especially important in obstructive lung disease.
Full post, key takeaways, references, and the rest of the Core Medical Education collection are available for WhiteBoard Medicine members.
Physiologically difficult airway management, peri-intubation hypotension, positive-pressure ventilation, and shock physiology.
Study Guide TopicARDS diagnosis, lung-protective ventilation, driving pressure, VILI, and severe hypoxemia.
Mini CoursesStructured video chapters, study guides, practice questions, final assessments, and clinical summaries.
Study Guide TopicHeart failure, pulse pressure, ScvO2, pulmonary artery catheters, CVP, and hemodynamic reasoning.
Study Guide TopicVentilator modes, settings, waveforms, dyssynchrony, noninvasive support, and troubleshooting.
