Table 2.

Comparison of heart, lung, and diaphragm ultrasound variables between the successful and failed weaning groups.

Variables		Successful weaning group (n=81)	Failed weaning group (n=24)	P value
Echocardiographic indicators	LVEF (%)	58.93±8.83	54.93±9.94	0.061
	E/A ratio	1.35±0.33	1.27±0.34	0.303
	E/e’ ratio	7.4 (6.1, 10.2)	10.5 (8.4, 17.5)	0.019
	DTE	185 (160, 220)	177 (130, 260)	0.658
	LAP	12.4 (7.2, 16.8)	15.9 (10.8, 21.3)	0.017
LUS		11 (7, 14)	15 (11, 21)	0.027
Diaphragmatic function n (%)	Normal function	55 (67.9%)	10 (41.7%)	0.020
	Hemidiaphragm dysfunction	26 (32.1%)	14 (58.3%)
	Bilateral diaphragmatic dysfunction	0	0

A – peak atrial velocity transmitral flow; DTE – deceleration time of E wave; E – the peak early velocity transmitral flow; e’ – early diastolic mitral annulus velocity; LAP – left-atrial pressure; LUS – lung ultrasound score; LVEF – left ventricular ejection fraction; APACHE II – acute physiology and chronic health evaluation II; BMI – body mass index; BNP – brain natriuretic peptide; ICU – Intensive Care Unit; RSBI – rapid shallow breathing index; SOFA – sequential organ failure assessment