Atrotech Atrostim PNS Anwenderhandbuch Seite 6

General Information
STIMULATION CURRENT WAVEFORM
AND ADJUSTABLE PARAMETERS
electrode
combination
I
TH
1
T
3max
I
TV
2
T
3max
S
p
3
T
4
Fig. 2. Details of one stimulation pulse series of the nerve stimulator Atrostim PNS.
(top)
T
1
T (bottom)
2
I
TH
T
3max
T
3min
I
TV
S
P
S
PI
t
p
T
1
T
3min
T
3min
T
3max 3min
S
PI
T
2
= Duration of one respiratory cycle
= Inspiration duration
= Threshold current
= Maximum pulse interval (between successive pulses)
= Minimum pulse interval (between successive pulses)
= Tidal volume (TV) current
= Slope of current increase
(=rate of increase of recruitment)
= Slope of shortening of pulse interval
(=rate of increase of firing rate)
= Stimulus pulse width (constant, 200 µs)
4
t
200 µs
p
Atrostim PNS
February 2012