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Swan Ganz Physiology
Educational only: videos on MedicalVideos.com are for general information and are not medical advice. Always consult your own doctor about your health.
Pulmonary capillary wedge pressure (PCWP) provides an indirect estimate of left atrial pressure (LAP). Although left ventricular pressure can be directly measured by placing a catheter within the left ventricle, it is not feasible to advance this catheter back into the left atrium. LAP can be measured by placing a special catheter into the right atrium then punching through the interatrial septum; however, for obvious reasons, this is not usually performed because of damage to the septum and potential harm to the patient.
This video in 30 seconds
This video explains Swan-Ganz physiology in terms of pulmonary capillary wedge pressure. It describes how wedge pressure provides an indirect estimate of left atrial pressure, and why left atrial pressure is not usually measured directly.
Key points
- Explains pulmonary capillary wedge pressure (PCWP) as an indirect estimate of left atrial pressure (LAP)
- Notes left ventricular pressure can be measured directly with a catheter in the left ventricle, but that catheter cannot feasibly be advanced back into the left atrium
- Explains direct LAP measurement would require passing a catheter through the interatrial septum
- Notes that direct approach is not usually performed because of damage to the septum and potential harm to the patient
Video Overview
This video presents “Swan Ganz Physiology” — Pulmonary capillary wedge pressure (PCWP) provides an indirect estimate of left atrial pressure (LAP). Although left ventricular pressure can be directly measured by placing a catheter within the left ventricle, it is not feasible to. Whether you are preparing for a procedure, studying the technique, or learning how a condition is assessed, the recording shows the process as it is performed in practice.
From our Cardiology collection: ECG interpretation, echocardiograms, angioplasty, stents and heart conditions explained by cardiologists. Browse all Cardiology videos →
Educational content only — not a substitute for professional medical advice.
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