It was reported that this patient with this dual chamber pacemaker experienced a syncopal episode thus causing the patient to become symptomatic and faint.The patient was admitted to the emergency department for evaluation.Technical services was consulted and recommended programming options.Upon further review, it was found the device was exhibiting pacemaker wenkebach.In addition, the device stored episodes of pacemaker mediated tachycardia (pmt), which were found to be atrial driven.The patients intrinsic atrial rate was greater than the programmed upper rate limit of 150 bmp and the programmed mode switch rate of 170 bmp.The stored episodes correlated to the patients symptoms.Device optimization is recommended.No out of range measurements were reported.The patient has a non-boston scientific his bundle lead placed in the right ventricular (rv) port.It was reported that the rv lead was exhibiting undersensing.The device system remains in service at this time.No additional adverse patient effects were reported.
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