Maarten van Egmond

63 The pre- and postoperative course of functional status 3 Appendix A . Continued Characteristics of included participants, compared to all patients treated with esophagectomy between 2012-2016. * With percentages in parentheses unless indicated otherwise. ASA, American Society of Anesthesiologists; I: healthy person, II: mild systemic disease, III: severe systemic disease; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); COPD, chronic obstructive pulmonary disease; DM II, diabetes mellitus type 2; FVC, functional vital capacity; FEV 1 , forced expiratory volume in the first second of expiration. Postoperative complications according to the Clavien-Dindo classification Grade I: Any deviation from the normal postoperative course without pharmacologic treatment or surgical, endoscopic, and radiological interventions; Grade II: Requiring pharmacologic treatment with drugs other than ones allowed for grade I complications; Grade III: Requiring surgical, endoscopic, or radiologic intervention not under general anesthesia (IIIa), under general anesthesia (IIIb); Grade IV: Life-threatening complications requiring IC/ICU management, single- organ dysfunction (including dialysis) (IVa), multiorgan dysfunction (IVb); Grade V: Death of a patient.