Cardiac stimulator 4427 Easypace - Instructions for use
27/40
For a correct synchronism function it is necessary to make an accurate adjustment of the
unit’s sensitivity threshold by acting on keys sense ▲ and ▼ as described above.
Proceed as follows: starting from a setting with a high value of sense (several sense bars
switched on) and a safe capture, slowly decrease such setting by checking the
synchronisation green LED. After reaching the minimum value at which this
synchronisation is maintained, increase by approximately two bars to allow for some
margin.
CAUTION !
A correct setting of the sense threshold is crucial for a proper operation in
VVI mode.
Too high a value of such threshold, may give rise to capture failure and
consequent, unnecessary and potentially dangerous stimulation.
Vice versa, a threshold too low is not to be recommended as minor activities
or simple disturbances may be interpreted as cardiac activities and cause
stimulation inhibition.
Also in this operating mode, the stimulation starts as soon as the mode is activated by a
pressure on the VVI key and terminates when exiting the same mode by a prolonged
pressure on the STAND BY key.
As indicated above, shifting to asynchronous stimulation, and adjustments of rate and
amplitude of the stimulus, are possible without interrupting the stimulation.
The stimulator activity is indicated by a blinking of the LED as follows:
• red LED - stimulus emission (only if the amplitude is other than 0 mA);
• green LED - spontaneous beat and inhibition of stimulation.
In case of inefficient stimulation - as verified with the aid of an ECG monitor - increase the
amplitude of the stimulus or check for the correct positioning of the electrode.
Also in this mode the display is turned off, in order to prolong the battery life, if no keys
have been pressed for 20 seconds. The stimulator activity can still be checked by the
blinking of key PACE or SENSE. Pressing any key will cause the display to be switched
on again.
To Next Page
Loading...