Medtronic received information that during a case this 560 bio-console instrument switched into coast mode.A perfusionist who was unfamiliar with the instrument had the bubble detector activated and set to switch the motor off if a bubble was detected.During bypass, the perfusionist manipulated the tubing and separated the bubble detector from the line.The pump switched into coast mode.Since the bubble detector had not been adjusted and the instrument continued to detect a bubble, the unit remained in coast mode.The perfusionist could not deactivate the mode, and needed to use the hand crank to maintain flows until a replacement bio-console could be brought in for use.There were no adverse patient effects.
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