Maarten van Egmond

28 Chapter 2 Table 1. Patients and surgical characteristics (94 patients) No. of patients* Gender (male) 74 (78.7) ASA-classification I 19 (20.2) II 58 (61.7) III 17 (18.1) Age at surgery (years), mean (SD) 63.8 (9.4) 60-69 years 35 (37.2) 70-79 years 30 (31.9) >80 years 1 (1.1) BMI, mean (SD) 26.5 (3.9) < 19 1 (1.1) 19-25 29 (30.9) 25.1-30 44 (46.8) > 30.1 15 (16.0) Comorbidities Cardiovascular 24 (25.5) COPD 9 (9.6) DM II 8 (8.5) Cigarette smoking (yes) 19 (20.2) Pulmonary function (percentage of predicted), mean (SD) FVC 113.1 (16.0) FEV 1 106.6 (17.5) IVC 109.7 (15.3) Chemoradiation 94 (100) Surgical procedure Transhiatal open 3 (3.2) Transhiatal scopic 11 (11.7) Transthoracal open 10 (10.6) Transthoracal scopic 66 (70.2) * 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; IVC, inspiratory vital capacity.