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. Author manuscript; available in PMC: 2014 Feb 10.
Published in final edited form as: Respir Physiol Neurobiol. 2013 Mar 26;187(2):149–156. doi: 10.1016/j.resp.2013.03.003

Table 3.

Hemodynamic and ventilatory responses to CPAP 5 and 10cm H2O

Hemodynamic and
ventilatory parameters		 CHF patients (N=7)
 Controls (N=8)
Baseline CPAP 5 cm
H2O start		 CPAP 5 cm
H2O end		 CPAP 10 cm
H2O start		 CPAP 10cm
H2O end		 Recovery Baseline CPAP 5 cm
H2O start		 CPAP 5 cm
H2O end		 CPAP 10 cm
H2O start		 CPAP 10cm
H2O end		 Recovery
MAP (mmHg) Mean
SD		 84.1†
12		 82.8
11		 86.4
15		 84.0
12		 83.3
13		 84.4
14		 97.8
8		 100.2
9		 101.8
9		 102.3
7		 102.9
8		 99.7
9
SBP(mmHg) Mean
SD		 122.5† 21 135.5*
26		 135.0*
23		 131.6*
16		 130.1*
15		 133.5
26		 148.0
19		 153.5
23		 156.2
23		 158.7
21		 157.5
20		 150.1
23
DBP (mmHg) Mean
SD		 63.4
8		 66.2
12		 65.4
13		 64.8
13		 63.8
13		 64.8
11		 71.1
7		 74.7*
6		 75.2
5		 77.1*
4		 77.4*
6		 73.2
6
SV (ml) Mean
SD		 94.5
19		 91.1
22		 90.1
23		 92.1
23		 93.6
25		 95.8
22		 111.0
17		 101.7*
14		 102.1*
10		 96.5*
12		 95*
12		 105.5
14
HR (bpm) Mean
SD		 64
7		 65
8		 63
7		 68
5		 68
6		 64
7		 67
8		 66
7		 66
7		 65
7		 66
12		 65
7
CO (l/min) Mean
SD		 6.1
2		 5.9
1		 5.7
2		 6.1
1		 6.3
2		 6.1
1		 7.5
2		 6.7
1		 6.7*
1		 6.2*
1		 6.2*
1		 6.8
1
VT (ml) Mean
SD		 640
382		 700
220		 800
550		 951
556		 980
560		 520
392		 825
106		 1274*
385		 1177
407		 1358*
277		 1155*
322		 769
116
Bf(bpm) Mean
SD		 16
6		 16
7		 16
7		 19
9		 16
10		 19
8		 12
3		 13
3		 15*
3		 16*
4		 16*
4		 12
3
VE (l/min) Mean
SD		 8.8
3		 10.1
3		 10.4
5		 14.8
5		 12.7
5		 8.1
4		 10.0
2		 16.7*
4		 16.8*
5		 20.7*
6		 7.8*
4		 9.9
3

MAP indicates mean arterial pressure; SBP, systolic blood pressure; DBP, diastolic blood pressure; SV, stroke volume; HR, heart rate; CO, cardiac output; VT, tidal volume; Bf, breathing frequency; VE, ventilatory volume.

*

p <0.05 different from baseline.

†

p <0.05 different from controls.