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The Risks of QT Prolongation in Patients With Implanted Pacemakers
If a follow-up ECG reveals a QTC interval of 500 milliseconds or more, we immediately discontinue the medication and obtain a cardiology consultation. Cardiologists are likely to recommend continuous ECG telemetry - repeat ECGs every two to four hours until normalized. It's wise to obtain cardiology consultations for patients with heart disease, with multiple QT prolonging risk factors such as IV heliparadol.