Table 4 Postoperative serious complications based on the Clavien-Dindo classification according to the age of patients
Clavien-Dindo classification | Age < 60 (n = 723) | 60 ≤ Age < 80 (n = 867) | Age ≥ 80 (n = 286) |
|---|---|---|---|
Grade IIIa, n (%) | 5 (0.7) | 27 (3.1) | 9 (3.1) |
  Fluid collection with PCD insertion | 2 | 14 | 4 |
  Bile leakage with ENBD/ERBD insertion | 0 | 7 | 3 |
  CBD stone with endoscopic stone extraction | 2 | 0 | 0 |
  Pleural effusion with PCD insertion | 1 | 5 | 2 |
  Wound dehiscence with local repair | 0 | 1 | 0 |
Grade IIIb, n (%) | 3 (0.4) | 2 (0.2) | 1 (0.3) |
  Mechanical ileus with re-operation | 1 | 0 | 0 |
  Bile leakage with re-operation | 1 | 0 | 0 |
  Wound dehiscence with re-operation | 1 | 0 | 1 |
  Pressure sore with re-operation | 0 | 1 | 0 |
  Empyema of the lung with re-operation | 0 | 1 | 0 |
Grade IV, n (%) | 1 (0.1) | 6 (0.7) | 7 (2.4) |
  Bile leakage with ENBD insertion + ICU care | 1 | 0 | 0 |
  Mechanical ileus with re-operation + ICU care | 0 | 1 | 1 |
  Pneumonia with mechanical ventilator | 0 | 2 | 4 |
  Fluid collection with PCD + ICU care | 0 | 1 | 0 |
  Fluid collection with re-operation + ICU care | 0 | 1 | 0 |
  Cerebrovascular accident + ICU care | 0 | 1 | 1 |
  Hernia strangulation with re-operation + ICU care | 0 | 0 | 1 |
Grade V, n (%) | 0 (0.0) | 1 (0.1) | 6 (2.0) |
  Pneumonia | 0 | 1 | 4 |
  Organ space surgical site infection | 0 | 0 | 2 |
Total, n (%) | 9 (1.2) | 36 (4.2) | 23 (8.0) |