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Table 3 Doppler echocardiographic findings according to baseline left ventricular ejection fraction (recorded under pressure support ventilation)

From: Echocardiography: a help in the weaning process

  

LVEF > 50%

(n = 58)

LVEF 50-35%

(n = 30)

LVEF < 35%

(n = 29)

E/A

    
 

PS/PEEP

0.97

(0.81-1.09)

0.82

(0.74-1.0)

1.0

(0.78-1.47)

 

SBT

0.99

(0.85-1.20)

0.89*

(0.76-1.32)

1.0*

(0.86-1.89)

DTE

(ms)

    
 

PS/PEEP

174

(152-193)

187

(144-224)

119

(90-153)

 

SBT

163

(155-181)

140*

(112-177)

96*

(80-137)

E/E'

    
 

PS/PEEP

5.2

(4.7-6.0)

6.0

(5.3-9.0)

7.9

(5.4-9.1)

 

SBT

5.8

(4.9-6.6)

6.9

(4.9-9.3)

7.8

(6.7-9.7)

  1. DTE, deceleration time of mitral E wave; LVEF, left ventricular ejection fraction; PS/PEEP, pressure support ventilation; SBT, spontaneous breathing trial.
  2. * P < 0.05 versus PS/PEEP.
  3. P < 0.01 in PS/PEEP versus other groups.
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