Results
reduced left ventricular ejection
We screened 484 patients for eligibility that were scheduled to receive either elective coronary artery bypass graft surgery with reduced left ventricular ejection fraction ≤ 30%, or major abdominal surgery. 63 patients could be included according to inclusion and exclusion criteria. Three patients withdrew from enrolment as explained in our previous publication, yielding 60 patients. After merging preoperative cholinesterase measurements from the day before surgery with surgery day values, 56 cases (median age 69 years, 29% female) of complete cholinesterase activity measurements could be included in the analyses, while four cases had to be excluded because of missing cholinesterase values (see flow chart, Fig. CONSORT flow chart.