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Table 3 Correlation between possible factors and lung ultrasound scores (N = 85)

From: Feasibility and efficacy of lung ultrasound to investigate pulmonary complications in patients who developed postoperative Hypoxaemia-a prospective study

Variables Correlation Coefficient (r) P
Sex (M/F) 0.229 0.035
Age (y) −0.041 0.707
BMI (kg/m2) −0.127 0.246
SPO2 (%) −0.244 0.024
Smoking −0.039 0.725
Duration of mechanical ventilation (min) −0.127 0.245
Type of surgery 0.075 0.494
Sufentanil dose (ug/kg/h) 0.125 0.253
Total infusion (mL) 0.046 0.677
Transfusion (Y/N) −0.156 0.155
  1. Lung ultrasound scores were recorded and analysed in patients without pneumothorax
  2. Abbreviations: LUS Lung ultrasound; M Male; F Female; BMI Body mass index; SPO2 Oxygen saturation measured by pulse oximetry