Which QT Correction Formulae to Use for QT Monitoring?
- Vandenberk, Bert
- Vandael, Eline
- Robyns, Tomas
- Vandenberghe, Joris
- Garweg, Christophe
- Foulon, Veerle
- Ector, Joris
- Willems, Rik
DOIAbstract
BACKGROUND: Drug safety precautions recommend monitoring of the corrected QT interval. To determine which QT correction formula to use in an automated QT-monitoring algorithm in our electronic medical record, we studied rate correction performance of different QT correction formulae and their impact on risk assessment for mortality. METHODS AND RESULTS: All electrocardiograms (ECGs) in patients >18 years with sinus rhythm, normal QRS duration and rate <90 beats per minute (bpm) in the University Hospitals of Leuven (Leuven, Belgium) during a 2-month period were included. QT correction was performed with Bazett, Fridericia, Framingham, Hodges, and Rautaharju formulae. In total, 6609 patients were included (age, 59.8±16.2 years; 53.6% male an...
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