A contrast enhanced echocardiogram was performed (could not rule out lv thrombus without contrast).To avoid triggering the bubble detector, the cardiohelp was placed in global override.Cannulating physicians and backup circuit immediately available and echo completed without incident.30 minutes later (half-life of echo contrast < 2 minutes) global override turned off and cardiohelp subsequently stopped and could not be restarted.It continued to sense a flow disturbance.Patent already tenuous, so cpr initiated, and patient converted from vv to va ecmo and placed on new ecmo circuit.Manufacturer response for console, heart-lung machine, cardiopulmonary bypass, maquet cardiohelp (per site reporter): service representative from maquet tested this device with our clinical and biomedical team present on.The cardiohelp device field test was completed.The device passed all tests and is deemed completely functional.Additional data regarding alarm logs pending further analysis by maquet manufacturer or vendor.We are awaiting results.
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