OSYPKA PACE 203H, Инструкция по эксплуатации

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PACE 203H – Instructions for Use
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pacemaker to the beginning of a new
beat-to-beat interval.
9.6.5 Atrial Inhibited (AAI) Pacing
In the absence of intrinsic activity, ven-
tricular or atrial stimulation impulses will
be given with the set basic rate. The
recognition of a P-wave in AAI mode in
the pacemaker’s sensing phase inhibits
the delivery of the next stimulation im-
pulse, resets the timing of the pacemak-
er to the beginning of the beat-to-beat
interval and starts the refractory period.
9.6.6 Atrial Synchronous (P-Tracking)
(VDD) Pacing
In atrial synchronous (P-tracking) (VDD)
pacing mode, PACE 203H stimulates
only in the ventricle, senses in both atri-
um and ventricle, and responds both by
inhibition of ventricular output by intrinsic
ventricular activity and by ventricular
tracking of P waves.
A sensed P wave initiates the P-V delay.
During the P-V delay, the atrial channel
is refractory. At the end of the P-V delay,
a ventricular stimulus is delivered if no
intrinsic ventricular activity has been
sensed, that is, P wave tracking. Ven-
tricular activity, paced or sensed, initi-
ates the PVARP and the V-A delay.
If no P wave activity occurs during the V-
A delay, the A-V Delay is initiated. Dur-
ing the A-V Delay, the atrial channel is
refractory. If no R-wave activity occurs
during the A-V Delay, PACE 203H deliv-
ers a ventricular pacing stimulus upon
termination of the A-V Delay.
9.6.7 Dual-Chamber Pacing and
Sensing with Inhibition and Tracking
(DDD)
This pacing mode provides dual-
chamber pacing and sensing with inhibi-
tion and atrial tracking.
If intrinsic atrial and ventricular activity
occur before the beat-to-beat interval
terminates, both channels are inhibited
and no pacing occurs.
If a P wave is sensed before the V-A
interval is completed, output from the
atrial channel is inhibited and the A-V
Delay is initiated. If no ventricular activity
is sensed before the A-V Delay termi-
nates, a ventricular pacing stimulus is
delivered (P-synchronous ventricular
pacing).
If no atrial activity is sensed before the
V-A delay is completed, an atrial pacing
stimulus is delivered and the A-V Delay
is initiated.
If intrinsic ventricular activity occurs
before the termination of the A-V Delay,
the ventricular output from PACE 203H
is inhibited. If no intrinsic ventricular
activity occurs before the termination of
the A-V Delay, a ventricular pacing
stimulus is delivered (A-V sequential
dual-chamber pacing).
9.6.8 The A-V Sequential, Atrial
Inhibited (DAI) Pacing
A-V sequential, atrial inhibited (DAI)
pacing provides pacing in both the atri-
um and the ventricle but sensing only in
the atrium. This mode is implicitly select-
ed by first setting the DDD mode, and
second the ventricular sensitivity to infi-
nite ("–.–"). Thus, sensing in the ven-
tricular channel is disabled.