Journal of Metabolic and Bariatric Surgery

Indexed in /covered by CAS, KoreaScience & DOI/Crossref:eISSN 2508-5956   pISSN 2287-2930

Table. 2.

Table. 2.

Univariate analysis of risk factors for the development of pulmonary atelectasis

 VariablesAtelectasis (+) (n=33)Atelectasis (−) (n=40)P-value
Patient demographics
 Sex0.623
  Male10 (30.3%)15 (37.5%)
  Female23 (69.7%)25 (62.5%)
 Age (year, mean±SD)41.5±10.5037.0±11.560.090
 BMI (kg/m2, mean±SD)37.4±5.8336.6±5.890.523
Social and Past history
 Smoking history7 (21.2%)5 (12.5%)0.357
 CAOD03 (7.5%)0.247
 Cardiac valvular disease01 (2.5%)1.000
 Asthma1 (3.0%)1 (2.5%)1.000
 OSAS0.108
  Mild 4 (12.9%)13 (33.3%)
  Moderate10 (32.3%) 5 (12.8%)
  Severe15 (48.4%)18 (46.2%)
Preoperative evaluation
 Albumin<3.0 g/dL00
 PFT* (n=30) (n=39)
  FVC (L, mean±SD)3.36±0.743.68±0.820.102
  FEV1 (L, mean±SD)2.79±0.573.09±0.710.058
  FEV1/FVC (%, mean±SD)83.4±5.658.42±4.800.529
(n=28) (n=37)
  VC (L, mean±SD)3.40±0.753.75±0.820.081
  IC (L, median [IQR])2.645 [2.465-2.9825] 2.66 [2.46-3.18]0.479
  ERV (L, median [IQR])0.595 [0.41-0.8025] 0.98 [0.62-1.12]0.007
 ASA class0.350
  219 (57.6%)18 (45.0%)
  314 (42.4%)22 (55.0%)
Perioperative management
 Anesthetic time (min, median [IQR]) 240 [215-290]227.5 [203.75-276.25]0.251
 CPAP23 (69.7%)34 (85.0%)0.157
 PCA32 (97.0%)34 (85.0%)0.119
 HS (day, median [IQR]) 7 [7-8] 7 [7-7]0.096
Adverse events
 Pneumonia 1 (3.0%) 1 (2.5%)1.000
 Postoperative complications** 4 (12.1%) 7 (17.5%)0.744

SD = standard deviation; BMI = body mass index; CAOD = coronary artery obstructive disease; OSAS = obstructive sleep apnea syndrome; PFT = pulmonary function test; FVC = forced vital capacity; FEV1 = forced expiratory volume in 1 second; VC = vital capacity; IC = inspiratory capacity; IQR = interquartile range; ERV = expiratory reserve volume; ASA = American Society of Anesthesiologists; CPAP = continuous positive airway pressure; PCA = patient-controlled analgesics; HS = length of postoperative hospital stay.

A total of 69 patients were evaluated for PFT. Four of 54 patients were evaluated for FVC, FEV1 and FEV1/FVC.

Postoperative complications: left gastric artery pseudoaneurysm (n=2, 2.7%), small bowel obstruction (n=2, 2.7%), marginal ulcer bleeding (n=2, 2.7%), fever of unknown origin (n=1, 1.4%), postoperative acute tubular necrosis of kidney (n=1, 1.4%), anastomosis site stricture (n=1, 1.4%) and anastomosis site perforation (n=1, 1.4%).

J Metab Bariatr Surg 2019;8:8-17 https://doi.org/10.17476/jmbs.2019.8.1.8
© 2019 J Metab Bariatr Surg