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QT-interval prolongation due to medication found in the preoperative evaluation
Mika Seto1, Sayo Koga1, Ryosuke Kita1
1Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
Journal of Dental Anesthesia and Pain Medicine
|January 20, 2018
Summary
Drug-induced QT prolongation, a dangerous heart rhythm issue, can be reversed by stopping suspect medications. Dental surgeons must recognize this risk for patient safety during surgery.
Area of Science:
- Cardiology
- Pharmacology
- Oral and Maxillofacial Surgery
Background:
- QT prolongation is a serious electrocardiographic finding linked to potentially lethal arrhythmias.
- Acquired QT prolongation is commonly associated with certain medications and electrolyte imbalances.
Observation:
- Three cases of drug-induced QT prolongation were observed.
- Patients' prolonged QT intervals (QTc) improved significantly after temporarily discontinuing suspected drugs before surgery.
Findings:
- Case 1: QTc improved from 518 to 429 ms after stopping a gastrointestinal prokinetic agent.
- Case 2: QTc improved from 463 to 441 ms after stopping a proton pump inhibitor.
- Case 3: QTc improved from 473 to 443 ms after stopping a molecular targeted drug.
Implications:
- Even non-cardiac drugs can cause dangerous QT prolongation.
- Dental surgeons must be aware of this adverse drug effect for safe oral and maxillofacial surgery.
- Interdisciplinary collaboration is crucial for managing patients with potential drug-induced QT prolongation.
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