ventricular assist device weaning
Systematic process of reducing mechanical circulatory support to assess native cardiac recovery potential.
Full Definition
Ventricular assist device weaning involves the gradual reduction of mechanical support to evaluate whether the patient's native heart has recovered sufficient function to maintain adequate circulation independently. This process requires careful hemodynamic monitoring, echocardiographic assessment, and laboratory evaluation while progressively decreasing pump speed or flow rates. Weaning protocols typically assess left ventricular ejection fraction, pulmonary capillary wedge pressure, and cardiac output at reduced support levels. Successful weaning may lead to device explantation, while failed attempts indicate continued need for mechanical support or heart transplantation.
Usage
Usage note: Document specific hemodynamic parameters and timelines during weaning attempts.
In Context
- "VAD weaning protocol demonstrated improved left ventricular function with ejection fraction of 45%." — Cardiology consultation note
- "The patient failed weaning attempts due to persistent low cardiac output at minimal support settings." — Heart failure clinic follow-up