It was reported that elective rvad-ecmo had been initiated and a quadrox device appeared to have an obstruction to forward blood flow.The pressure drop in the membrane was 375 mmhg at 1.5 to 2 l/min flow.The device was exchanged.The patient did incur period of at least 15 minutes of inadequate unloading of the rv.The 2nd device performed satisfactorily.Additional information obtained- blood flow: 1-2 l/min, pre-oxy membrane pressure: 425 mmhg, post-oxy membrane pressure: 58 mmhg.Rvad-ecmo right ventricular assist device extracorporeal membrane oxygenation.Rv-right ventricle.(b)(4).
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