Skip to main content

Table 2 Dynamic changes of biological and echocardiographic data during the second spontaneous breathing trial

From: Myocardial ischemia during ventilator weaning: a prospective multicenter cohort study

Biological and echocardiographic data

Before

At the end

p

 

Success (n = 76)

Troponin T, ng/l

297 (926)

303 (969)

0.641

NT-proBNP, ng/l

4166 (7316)

3975 (6632)

0.159

Protein, g/l

59.1 (10.9)

60.4 (10.1)

0.040

E mitral wave, cm/s

87.4 (24.4)

89.9 (26.7)

0.248

E/A ratio

0.99 (0.39)

1.00 (0.52)

0.736

E/e’ ratio

10.6 (5.7)

10.7 (5.4)

0.778

LVEF, %

52 (15)

53 (14)

0.323

CO, l/min

5.9 (1.8)

6.2 (2.0)

0.225

 

Failure (n = 132)

Troponin T, ng/l

410 (1866)

418 (1921)

0.326

NT-proBNP, ng/l

5726 (14509)

5983 (15476)

0.015

Protein, g/l

59.8 (9.1)

62.0 (9.0)

< 0.001

E mitral wave, cm/s

88.6 (33.7)

101.9 (36.0)

< 0.001

E/A ratio

1.04 (0.54)

1.18 (0.61)

0.003

E/e’ ratio

11.1 (6.7)

11.8 (6.9)

0.040

LVEF, %

54 (14)

55 (15)

0.048

CO, l/min

5.7 (2.0)

6.1 (2.2)

0.012

  1. NT-proBNP amino terminal pro-brain natriuretic peptide, E early diastolic wave velocity, A late diastolic wave velocity, e’ tissue Doppler early wave velocity at the lateral mitral valve annulus, LVEF left ventricle ejection fraction, CO cardiac output
  2. Data are expressed as mean (standard deviation). p values were calculated using paired Student’s t test