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Original Article
The corrected QT (QTc) prolongation in hyperthyroidism and the association of thyroid hormone with the QTc interval
Ye Seung Lee, Joong Wan Choi, Eun Ju Bae, Won Il Park, Hong Jin Lee, Phil Soo Oh
Clin Exp Pediatr. 2015;58(7):263-266.   Published online July 22, 2015
Purpose

Ventricular repolarization is assessed using the QT interval corrected by the heart rate (QTc) via an electrocardiogram (ECG). Prolonged QTc is associated with an increased risk of arrhythmias and cardiac mortality. As there have been few reports regarding the effects of hyperthyroidism on ventricular repolarization, we studied the association between serum free thyroxine (free T4 [fT4]) and thyroid stimulating hormone...

Case Report
Identification of a novel mutation in a patient with pseudohypoparathyroidism type Ia
Ye Seung Lee, Hui Kwon Kim, Hye Rim Kim, Jong Yoon Lee, Joong Wan Choi, Eun Ju Bae, Phil Soo Oh, Won Il Park, Chang Seok Ki, Hong Jin Lee
Clin Exp Pediatr. 2014;57(5):240-244.   Published online May 31, 2014

Pseudohypoparathyroidism type Ia (PHP Ia) is a disorder characterized by multiform hormonal resistance including parathyroid hormone (PTH) resistance and Albright hereditary osteodystrophy (AHO). It is caused by heterozygous inactivating mutations within the Gs alpha-encoding GNAS exons. A 9-year-old boy presented with clinical and laboratory abnormalities including hypocalcemia, hyperphosphatemia, PTH resistance, multihormone resistance and AHO (round face, short stature, obesity, brachydactyly...