User's Manual

64 Operator’s Manual ZM-520PA/521PA/530PA/531PA

Use with a Pacemaker

When monitoring a pacemaker patient, the transmitter detects pacemaker pulse and rejects the

pacemaker pulse from the heart rate count.

WARNING

Interaction Between Minute Ventilation Rate-Adaptive Pacemakers and Cardiac

Monitoring and Diagnostic Equipment*

The bioelectric impedance measurement sensor of a minute ventilation rate-adaptive

implantable pacemaker may be affected by transmitter which is connected to the

same patient. If this occurs, the pacemaker may pace at its maximum rate and the

transmitter may give incorrect data to the monitor. If this occurs, disconnect the

electrode leads from the patient or change the setting on the pacemaker by referring

to the pacemaker’s manual. For more details, contact your pacemaker representative

or Nihon Kohden representative.

* Minute ventilation is sensed in rate-adaptive pacemakers by a technology known as bioelectric

impedance measurement (BIM). Many medical devices in addition to pacemakers use this

technology. When one of these devices is used on a patient with an active, minute ventilation

rate-adaptive pacemaker, the pacemaker may erroneously interpret the mixture of BIM signals

created in the patient, resulting in an elevated pacing rate.

For more information, see the FDA web site.

http://www.fda.gov/cdrh/safety.html

WARNING

The transmitter detects the pacemaker pulse and rejects the pacemaker pulse from

the heart rate count. However, all of the pacemaker pulse might not be rejected. If

the pacemaker pulse is not rejected, the pacemaker pulse is detected as QRS and

false heart rate may be indicated. Keep pacemaker patients under close observation.

* For the pacemaker pulse rejection capability of ZM-520PA/521PA/530PA/531PA transmitter

refer to the “Speciﬁcations - ECG” section.

WARNING

The pacemaker pulse can be overlooked or detected as QRS. You cannot conﬁrm

the pacemaker operation only from the detected pacemaker pulse.

NOTE

• If an electric blanket is used and incorrect heart rate is displayed on the monitor, turn

off the pacing spike detection on the monitor.

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