When telemetry or ECG shows a newly prolonged QTc (e.g., >500 ms) in an otherwise stable hospitalized patient, how aggressively do you modify medications, electrolytes, or monitoring?

A newly prolonged QT can be easy to overlook amid the complexity of inpatient hospitalization, and when identified, I generally add it to the problem list so it remains visible during the admission and in future care. Although prolonged QT is associated with torsades de pointes, sudden cardiac death...