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QTc Shortening After Oral Calcium Supplementation in a Poststroke Rehabilitation Patient Being Considered for
Benjamin Sims1, Meghan Oram1, Joshua Startup1
1University of Michigan Ann Arbor Michigan USA.
Clinical Case Reports
|July 23, 2026
Abstract:
In a 70-year-old inpatient rehabilitation patient after multifocal ischemic stroke, QTc prolongation delayed consideration of donepezil for aphasia. Mild hypocalcemia was treated with oral calcium carbonate, after which QTc shortened from 464 to 412 ms. Calcium supplementation may support QTc optimization, though causality remains uncertain.