Cardiothoracic & vascular anesthesia

Intraoperative Methadone in Adult Cardiac Surgical Patients and Risks for Postoperative QTc Prolongation

J Cardiothorac Vasc AnesthPublished Retrospective cohort study

Authors' conclusion

A single intraoperative intravenous methadone dose did not prolong the QTc significantly or increase the incidence of arrhythmias and may be safe in adult cardiac surgical patients.

Study context

Population
Adults undergoing elective cardiac surgery at a tertiary academic institution, July 2020–July 2023
Participants
1,040 adults
Exposure
Methadone vs Nonmethadone
  • Methadonen = 423
  • Nonmethadonen = 617reference
Outcome
Change in QTc and percent QTc change between preoperative QTc and postoperative QTc
Follow-up
ICU admission
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Change and percent change in QTc
  • No significant differences in baseline QTc, immediate postoperative QTc, changes in QTc, or percent change in QTc between Methadone and Nonmethadone
  • QTc prolonged immediately postoperatively and normalized 24 hours after surgery in both groups

Observational data: associations, not effects.

Secondary outcomes

30-day mortality, 1-year mortality, days to death

No significant differences

Safety

Ventricular or atrial arrhythmias

No significant differences

Original publication

Intraoperative Methadone in Adult Cardiac Surgical Patients and Risks for Postoperative QTc Prolongation. J Cardiothorac Vasc Anesth. Published 16 November 2024. doi:10.1053/j.jvca.2024.11.012

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