Journal of Metabolic and Bariatric Surgery

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Table. 4.

Table. 4.

Univariate analysis of the correlation between the length of hospital stay after laparoscopic Roux-en-Y gastric bypass and study variables

 Variablesn=73 (%)Coefficient of correlationP-value
Patient demographics
 SexMale:Female=25:48−0.048 0.689
 Age (year, mean±SD)39.1±11.250.011 0.924
 BMI (kg/m2, mean±SD) 37.0±5.840.098 0.409
Social and Past history
 Smoking history12 (16.4%)−0.076 0.525
 CAOD 3 (4.1%)−0.037 0.754
 Cardiac valvular disease 1 (1.4%)0.228 0.052
 Asthma 2 (2.74%)0.103 0.388
 OSAS0.046 0.708
  Mild17 (23.3%)
  Moderate15 (20.5%)
  Severe33 (45.2%)
Preoperative evaluation
 Albumin<3.0 g/dL0
 PFT* (n=69)
  FVC (L, mean±SD) 3.54±0.80−0.096 0.433
  FEV1 (L, mean±SD) 2.96±0.67−0.105 0.390
  FEV1/FVC (%, mean±SD) 83.9±5.160.025 0.838
(n=65)
  VC (L, mean±SD) 3.60±0.81−0.149 0.237
  IC (L, mean±SD) 2.80±0.61−0.109 0.390
  ERV (L, mean±SD) 0.82±0.41−0.132 0.294
 ASA class0.023 0.850
  237 (50.7%)
  336 (49.3%)
Perioperative management
 Anesthetic time (min, mean±SD)254.0±91.280.204 0.083
 PCA66 (90.4%)−0.045 0.706
 CPAP57 (78.1%)−0.225 0.056
Adverse events
 Pulmonary atelectasis33 (45.2%)0.196 0.096
 Postoperative complications**11 (15.1%)0.428<0.05
 Pneumonia 2 (2.7%)0.325 0.005

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; ERV = expiratory reserve volume; ASA = American Society of Anesthesiologists; PCA = patient-controlled analgesics; CPAP = continuous positive airway pressure.

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