It was reported that a pacer dependent patient presented in-clinic for follow-up.While running a decrement threshold test, the "cancel test" was greyed out longer than expected.For a few beats, the patient was asystolic and became very lightheaded.Telemetry discrepancy with the merlin programmer was suspected.The patient would continue to be monitored.
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The field complaint of pacing drop-outs could not be verified.The programmer was used to interrogate and several tests were run on an in-house implantable cardioverter defibrillator.When the test was canceled, there would be a 2-4 second delay from the time the test was cancelled till the time the pacer would return to its programmed values, but at no time did pacing dropped out.
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