Troponin I as a mortality marker after lung resection surgery – a prospective cohort study

BMC Anesthesiology

Table 2 Types of surgery and intraoperative and postoperative events of patients included in this study

Variable	All patients
Variable	N	%
Segmentectomy	58	38.4
Lobectomy	64	42.4
Bi-lobectomy	16	10.6
Pneumonectomy	13	8.6
Video-assisted thoracoscopy	83	55.3
Intraoperative arrhythmia^a	16	10.6
Intraoperative hemodynamic instability^b	39	25.8
Perioperative blood transfusion	19	12.6
Complications within 30 days^c	21	13.9
Elevation of troponin I (≥0.16 ng/ml) in any of the three measurements	75	49.7
Length of surgery (hours)	3.3 ± 1.4
Length of anesthesia (hours)	3.8 ± 1.6
Time of ICU stay (days)	2 ± 3
Time of hospitalization (days)	8.4 ± 10.6
Death within 30 days	2	1.3
Death within one year	22	14.6

^aIntraoperative arrhythmias were ventricular or supraventricular changes that occurred with hemodynamic instability, and that required intervention
^bHaemodynamic instability was defined as a decrease in systolic blood pressure lower than 90 mmHg, a heart rate lower than 60 beats per minute, or the use of vasopressors or inotropic drugs (intraoperatively use of bolus was not considered as haemodynamic instability criterion)
^cDefined as cardiovascular death, acute myocardial infarction, unstable angina, acute pulmonary edema, cardiogenic shock, arrhythmia with hemodynamic instability, pulmonary thromboembolism, stroke, myocardial infarction, and respiratory infection

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