Biomedical Engineering Reference
In-Depth Information
CV in V
T
No. of Breaths
100
H
a
L
30
H
b
L
80
25
20
60
15
40
10
20
5
0.8
a
0.8
a
0.2
0.4
0.6
0.2
0.4
0.6
No. of Breaths
No. of Breaths
100
100
H
c
L
H
d
L
80
80
60
60
40
40
20
20
0.8
a
0.8
a
0.2
0.4
0.6
0.2
0.4
0.6
V
V
0.8
H
e
L
H
f
L
0.7
1
0.6
0.8
0.5
0.6
0.4
0.3
0.4
0.2
0.2
0.1
70
t
40
t
10
20
30
40
50
60
5
10
15
20
25
30
35
Fig. 3.
Linear model simulations with C = 0:1 L/cmH
2
O, R
i
= R
e
= 20
cmH
2
O/L/s, P
set
= 22 cmH
2
O, P
peep
= 5 cmH
2
O, P
sen
= 15 cmH
2
O, t
tot
= 6
s, f = 20 breaths/minute: (a) Scattergram of coecients of variation against
ow cut-o; (b) Scattergram of number of breaths (out of a possible 100 breaths)
against ow cut-o for t
tot
= 60=f; (c) Scattergram of number of breaths against
ow cut-o for t
tot
= 120=f; (d) Scattergram of number of breaths against ow
cut-o for t
tot
= 180=f; (e) volume waveform for = 0:20; (f) volume waveform
for = 0:35.
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