The association between BMI and postoperative pulmonary complications in adults undergoing non‐cardiac, non‐obstetric surgery: a retrospective cohort study

Patients who were overweight or living with class 1 obesity undergoing non-cardiac, non-obstetric surgery had paradoxically lower risks of postoperative pulmonary complications compared with those of a normal weight. These findings may contradict traditional assumptions about surgical risk and obesity, highlighting the need to re-evaluate the relationship between BMI and postoperative pulmonary complications.