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Troponin-I for prediction of early postoperative course after pediatric cardiac surgery
F F Immer1, F Stocker, A M Seiler
1Department of Cardiovascular Surgery, University Hospital, Berne, Switzerland. f.immer@bluewin.ch
Insights
Postoperative cardiac troponin-I (cTnI) levels in children undergoing heart surgery can predict recovery. Elevated cTnI indicates a higher risk of complications and prolonged recovery.
Area of Science:
- Pediatric Cardiology
- Cardiac Surgery
- Biomarkers
Background:
- Cardiac troponin-I (cTnI) is a sensitive marker for myocardial damage in children.
- Perioperative myocardial damage impacts postoperative cardiac performance.
- Assessing cTnI aids in understanding outcomes after pediatric cardiac surgery.
Purpose of the Study:
- To evaluate the prognostic value of cardiac troponin-I (cTnI) for the early postoperative course in pediatric cardiac surgery.
- To correlate cTnI levels with key postoperative clinical parameters.
Main Methods:
- Seventy-three children undergoing elective congenital heart disease surgery were studied.
- Serial cTnI levels were measured and correlated with inotropic support, renal/hepatic function, and intubation duration.
- Patients with prolonged recovery were specifically analyzed based on cTnI levels.
Main Results:
- Cutoff values for high-risk cTnI were established at 25 µg/L (4h post-ICU admission) and 35 µg/L (peak in 24h).
- Significant correlations were found between cTnI levels and the need for inotropic support, renal dysfunction severity, and intubation duration.
Conclusions:
- Serum cTnI levels 4 hours after ICU admission predict the early postoperative course in pediatric cardiac surgery patients.
- cTnI levels correlate with the incidence of significant postoperative complications, aiding in risk stratification.
Objectives:
It was the aim of the study to test the prognostic value of cardiac troponin-I (cTnI) concerning the early postoperative course after pediatric cardiac surgery.
Background:
Cardiac troponin-I is a very specific and sensitive marker of myocardial damage in adults and children. As perioperative myocardial damage may be a significant factor of postoperative cardiac performance, serial cTnI values were analyzed in children undergoing open heart surgery.
Methods:
Seventy-three children undergoing elective correction of congenital heart disease including atrial and ventricular surgical manipulation were studied. Cardiac troponin-I levels were measured serially and correlated with intra- and postoperative parameters (such as doses and length of inotropic support, renal and hepatic function, duration of intubation). Patients with prolonged postoperative recovery were analyzed with special attention to the cTnI levels.
Results:
The cutoff point for the definition of a high and a low risk group of cTnI values was set at 25 microg/liter, 4 h after admission to the intensive care unit (ICU) and at 35 microg/liter considering the maximal value of cTnI in the first 24 h in the ICU. The results showed a highly significant correlation between the need for inotropic support, the severity of renal dysfunction and the duration of intubation in relation to the serum levels of cTnI.
Conclusions:
Cardiac troponin-I serum levels after open heart surgery in children and infants 4 h after admission to the ICU allowed anticipation of the postoperative course and correlated with the incidence of significant postoperative complications.