case_images: PMC11251994_01
case_images: Patient's electrocardiogram.
case_images: fmed-11-1416956-g001.jpg
case_images: PMC11251994_01_fmed-11-1416956-g001.jpg
case_images: fig1
case_images: The ECG (Figure 1) demonstrated normal sinus rhythm at a rate of 79 bpm, along with first-degree atrioventricular block (210 ms), ST segment depression, and prolonged QTc intervals (542 ms).
case_images: Changes in serum magnesium values over time.
case_images: fmed-11-1416956-g002.jpg
case_images: PMC11251994_01_fmed-11-1416956-g002.jpg
case_images: fig2
case_images: By day 3, her serum magnesium level had normalized, at 0.82 mmol/L (Figure 2).