คำอธิบาย
Azithromycin and quetiapine both prolong the QT interval via hERG blockade; concurrent use significantly increases the risk of life-threatening arrhythmias.
กลไก
Additive hERG (IKr) potassium channel blockade prolongs ventricular repolarization; azithromycin also inhibits CYP3A4 modestly, potentially increasing quetiapine exposure.
ความสำคัญทางคลินิก
Multiple case reports and pharmacovigilance data document torsades de pointes with this combination.
การจัดการ
Avoid combination; use alternative antibiotics (e.g., amoxicillin) when possible; if unavoidable, obtain ECG and correct electrolytes.
ข้อจำกัดความรับผิดชอบทางการแพทย์
This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.