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Long QTc During Methadone Maintenance: Contributors and Interventions Over 4 Years.
The Journal of Nervous and Mental Disease
|October 28, 2017
Summary
Long QTc episodes occurred in 34% of patients undergoing methadone maintenance treatment over 4 years. Most cases resolved with outpatient management, but some required hospitalization and one resulted in sudden death.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- Methadone maintenance treatment (MMT) is crucial for opioid use disorder.
- Long QTc syndrome, a cardiac condition, can be influenced by various factors, including medications.
- Understanding QTc prolongation in MMT patients is vital for patient safety.
Purpose of the Study:
- To determine the prevalence of long QTc episodes in MMT patients.
- To identify contributing factors and interventions for long QTc in this population.
- To describe the outcomes of long QTc episodes and recurrences.
Main Methods:
- Retrospective analysis of 62 MMT patients diagnosed with long QTc by cardiologists.
- Categorization of long QTc based on millisecond values (borderline, moderate, severe).
- Data collection included ECGs, demographics, contributing factors, and intervention outcomes.
Main Results:
- A 4-year prevalence of 34% for long QTc episodes was observed (39 episodes in 21 patients).
- Primary contributors included medication management (n=19) and illicit drug use (n=11).
- Most episodes (38/39) resolved with outpatient management, though 57% of affected patients had recurrences.
Conclusions:
- Long QTc is a significant concern in MMT patients, with medication and illicit drug use as key contributors.
- Outpatient management is often effective, but vigilance and timely intervention are necessary to prevent severe outcomes.
- Further research into proactive management strategies for QTc prolongation in MMT is warranted.
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