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

Table 1 Patient Characteristics (N = 113)

Variables	Mean (SD)/median (IQR)
Age (y)	60.1 (12.0)
Sex, M/F(N)	61/52
Height (cm)	164.0 (7.5)
Weight (cm)	66.1 (10.8)
BMI (kg/m²)	24.5 (3.3)
ASA, 1/2/3 (N)	7/96/10
SPO₂ (%)	90.0 (89.0, 91.0)
Duration of mechanical ventilation (min)	220.0 (162.5, 285.0)
Total infusion (mL)	1500.0 (1000.0, 1500.0)
Duration of PACU stay (min)	105.0 (85.0, 137.5)
LUS score	13.0 (11.0,16.0)
Smoking status, N (%)
Current	10 (8.8)
Previous	11 (9.7)
Never	92 (81.4)
Type of surgery, N (%)
Neurosurgery	10 (8.8)
Thoracoscopic surgery	31 (27.4)
Abdominal surgery	45 (39.8)
Major orthopaedics surgery	17 (15.0)
Others	10 (8.8)

Data are described as the mean ± standard deviation or median and interquartile range, as appropriate
The LUS score was described in patients without pneumothorax (N = 85)
SPO₂ was assessed without inhaled oxygen 15 min after extubation
The duration of PACU stay was the time period from entering the PACU to leaving
Abbreviations: SD Standard deviation; IQR Interquartile range; M male; F Female; BMI Body mass index; ASA American Society of Anesthesiologists classification; SPO₂ Oxygen saturation measured by pulse oximetry; PACU Postanaesthesia care unit; LUS Lung ultrasound

ISSN: 1471-2253