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Table 2 Evaluation of the effect of correction on right ventricular stroke volume derived from pulse wave analysis

From: Impact of respiratory cycle during mechanical ventilation on beat-to-beat right ventricle stroke volume estimation by pulmonary artery pulse wave analysis

Correction

Cond

SVref

SVPP

SVSD

SVSystAUC

  

NC

Cor

NC

Cor

NC

Cor

Stroke volume

Baseline

35.8 (2.9)

40.9 (6.6)

40.7 (7.0)

36.0 (2.9)

37.1 (2.8)c

39.4 (4.5)

38.1 (4.4)c

(ml)

ARDS

31.2 (7.1)

32.1 (7.7)a

31.6 (7.4)a

29.8 (7.2)

31.3 (7.2)c

32.0 (8.0)

33.4 (8.4)c

MAD (ml)

Baseline

2.2 (0.6)

4.4 (1.4)

1.9 (0.5)c

1.6 (0.5)

1.8 (0.3)

1.9 (0.6)

1.2 (0.5)c

 

ARDS

2.1 (0.4)

3.0 (0.5)

1.4 (0.4)c

1.3 (0.6)

1.6 (0.5)

1.7 (0.4)

1.2 (0.4)c

MAD/med

Baseline

0.06 (0.02)

0.11 (0.03)

0.05 (0.01)c

0.05 (0.01)

0.05 (0.01)

0.05 (0.02)

0.03 (0.01)c

 

ARDS

0.07 (0.02)

0.09 (0.01)

0.05 (0.00)c

0.04 (0.01)

0.05 (0.01)

0.05 (0.01)

0.04 (0.01)c

Rho

Baseline

N.A

0.863 (0.70)

0.882 (0.092)

− 0.111 (0.342)

0.876 (0.130)c

0.543 (0.141)

0.923 (0.050)c

 

ARDS

N.A

0.752 (0.080)

0.848 (0.049)

− 0.033 (0.262)

0.839 (0.077)c

0.483 (0.114)

0.928 (0.026)c

SVV (%)

Baseline

20 (6)

31 (6)

18 (4)c

17 (9)

20 (6)

14 (4)

12 (6)

 

ARDS

23 (5)

37 (7)

23 (6)c

17 (3)

25 (7)

15 (3)

17 (6)

  1. Stroke volume, MAD (median absolute difference) and MAD/MED (MAD divided by median) were obtained from all the beat-by-beat measurements during the studied period at each animal and condition. Rho represents the correlation between evaluated variable estimated from PA PWA and SVref evaluated beat-by-beat. SVV is the stroke volume variation and it was calculated at each respiratory cycle during the studied period. The representative value of each variable is the mean (SD) (according to distribution of data) for the 5 animals in the evaluated condition
  2. ap < 0.05 for lung condition cp < 0.05 for the correction
  3. A detailed description of the statistics results is provided in the online supplement
  4. P values lower than 0.050 were indicated in bold