In the morbidity analysis, sex, BMI, ASA‐PS classification, Brinkman index, diabetes mellitus, chronic steroid use, COPD, dialysis, previous cerebrovascular disease, radiotherapy, serum creatinine, CRP, procedure year, position at the time of MIE, and reconstruction route were significant risk factors (Table 2). Here, CRP is linked to chronic obstructive pulmonary disease.