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Table 1 Occurrence and severity of individual complications following surgery

From: Intraoperative hypotension is associated with increased postoperative complications in patients undergoing surgery for pheochromocytoma-paraganglioma: a retrospective cohort study

ComplicationsTotal numberSeverity of postoperative complications a
IIIIIaIIIbIVaIVbV
Stroke b22
Respiratory complications642
 Pulmonary infection c44
 Pleural effusion d22
Cardiovascular complications321
 New onset arrhythmia e11
 Acute myocardial infarction f22
Surgery-related complications63111
 Surgical bleeding g3111
 Ileus h33
Thromboembolic complications321
 Pulmonary embolism i11
 Deep venous thrombosis j22
Hypoglycemia k99
Urinary tract infection l11
  1. Data are number
  2. a According to Clavien-Dindo classification
  3. b Persisted new focal neurologic deficit and confirmed by neurologic imaging
  4. c Presence of at least one of the following manifestations, i.e., increased or color-changed sputum, new or changed pulmonary infiltrates, fever, and leukocyte count > 12,000/mm3, and required antibiotic therapy
  5. d Confirmed by chest X-ray or ultrasound examination and required drainage, aspiration, and/or diuresis after albumin administration
  6. e New onset atrial fibrillation or paroxysmal supraventricular tachycardia that necessitated antiarrhythmic therapy
  7. f Concentration of cardiac troponin I exceed the diagnostic criteria for myocardial infarction as well as new Q waves (lasts for 0.03 s) or continuous (4 days) abnormal ST-T segment
  8. g Bleeding after surgery that required secondary surgical hemostasis
  9. h Lack of bowel movement, flatulence, and requirement of parenteral nutrition for more than 1 week after surgery
  10. i Confirmed by computed tomographic pulmonary angiography
  11. j Confirmed by deep venous ultrasonography
  12. k Defined as a documented serum blood glucose level of less than 55 mg/dL
  13. l Confirmed by urinalysis and urine culture and necessitated antibiotic therapy