FIAB 4427 Easypace - Description of Keyboard and Display

Cardiac stimulator 4427 Easypace - Instructions for use
19/40
8.2. Description of keyboard and display
The keyboard of 4427 Easypace has thermoformed keys providing an accentuated
sense of touch. Moreover, the pressing down of any key is confirmed by a short acoustic
signal.
The ON and OFF keys are for turning the stimulator on and off. The on
condition of the unit is signalled by the display (during the STAND-BY
mode of operation) and by the blinking of the LED (during the V00 and VVI modes which
include turning the display off).
The device can be switched off only by a prolonged pressure of the OFF key.
The emission of a stimulation pulse takes place upon entering one of the
two operating modes V00 and VVI and is signalled by the blinking of the
red LED PACE.
The capture of a spontaneous impulse occurs, instead, after the correct adjustment of the
threshold (cf. later on) and is signalled (in the STAND-BY or VVI mode) by the blinking of
the green LED SENSE.
The stimulator operating modes STAND-BY, VVI and V00 are
selectable by a touch of the relevant keys. The specific operations to
be carried out for each of these modes will be described in detail later in this manual.
As graphically indicated on the keyboard, the burst and decreasing ramp
programs can only be activated in the mode V00 by pressing at the same
time the keys V00 and burst x4 or V00 and ramp ▼.
Both functions are active only until the two keys (V00 + burst x4 or V00 + ramp ▼) are
kept pressed. When one is released, the stimulator returns to the previous program V00 at
the set rate.
Two automatic programs are also available for a quick entry into the
asynchronous mode V00 by a touch of the red key EMERGENCY and
into the synchronous mode VVI by pressing AUTO. Both modes also
allow the operator to adjust with precision all the set parameters. For a detailed illustration
of the EMERGENCY AND AUTO programs, reference is made to the relevant paragraph.