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Table 2 Cardiac function parameters during spontaneous breathing and the 2/2 and 4/4 breathing patterns

From: Increased cardiorespiratory synchronization evoked by a breath controller based on heartbeat detection

 

Spt

2/2

4/4

SBP (mmHg)

114.81 ± 2.57

112.10 ± 2.74*

114.81 ± 2.69#

DBP (mmHg)

61.47 ± 1.65

59.29 ± 1.83**

61.52 ± 1.79#

MBP (mmHg)

79.25 ± 1.84

76.89 ± 2.03**

79.28 ± 1.97#

HR (beat/min)

73.04 ± 2.10

74.66 ± 2.36

74.05 ± 2.11

SV (mL/beat)

144.22 ± 5.66

137.61 ± 5.77*

145.65 ± 5.53##

CO (L/min)

10.40 ± 0.42

10.12 ± 0.43

10.56 ± 0.42#

  1. Data are presented as the mean ± SEM
  2. Spt, spontaneous breathing; 2/2, 2/2 breathing pattern; 4/4, 4/4 breathing pattern; SBP, systemic blood pressure; DBP, diastolic blood pressure; MBP, mean blood pressure; HR, heart rate; SV, stroke volume; CO, cardiac output
  3. * and ** p < 0.05 and p < 0.01, respectively, vs spontaneous breathing (paired t test). # and ## indicate p < 0.05 and p < 0.01, respectively, for comparison of the 4/4 breathing pattern and the 2/2 breathing pattern
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