Maryland CC Project
Keller – Heart-Lung Interactions in Spontaneous and Mechanical Ventilation
May 26, 2023
Dr. Michael Keller, a critical care clinician, discusses heart-lung interactions in ventilation. Topics include effects of ventilation on hemodynamics, relationships between heart, lungs, and ventilation, and implications for diseases like COPD and heart failure. Understanding these concepts is crucial for optimal patient care.
53:05
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Quick takeaways
- Spontaneous and mechanical ventilation can alter hemodynamic status by changing preload, afterload, and cardiac output.
- Changes in pleural pressure affect venous return, preload, and afterload, leading to potential complications like pulmonary edema and hypotension.
Deep dives
Effects of Spontaneous and Mechanical Ventilation on Hemodynamic Status
Spontaneous and mechanical ventilation can significantly impact a patient's hemodynamic status by altering preload, afterload, and cardiac output. Drastic changes in pulmonary capillary wedge pressure due to large swings in pleural pressure can lead to complications like pulmonary edema, hypotension, and increased myocardial work. The transition from positive to spontaneous ventilation increases intrathoracic blood volume, left ventricular afterload, and oxygen consumption, highlighting the importance of monitoring and managing these effects during patient care.
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