QTc interval prolongation in children with Ulrich-Turner syndrome
| Autor: | Stefan Kääb, Simon Urschel, Robert Dalla Pozza, Susanne Bechtold, Hans-Peter Schwarz, Heinrich Netz, Matthias Buckl |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Male
congenital hereditary and neonatal diseases and abnormalities medicine.medical_specialty Heart disease Heart block Long QT syndrome Turner Syndrome QT interval Body Mass Index Sudden cardiac death Electrocardiography Internal medicine Turner syndrome Humans Medicine cardiovascular diseases Child Retrospective Studies business.industry Prolongation medicine.disease Surgery Long QT Syndrome El Niño Case-Control Studies Pediatrics Perinatology and Child Health Cardiology Female business |
| Zdroj: | European Journal of Pediatrics. 165:831-837 |
| ISSN: | 1432-1076 0340-6199 |
| DOI: | 10.1007/s00431-006-0194-0 |
| Popis: | The Ullrich-Turner-Syndrome (UTS) is the most commonly occurring sex chromosome abnormality in females. Cardiac malformations are well known, but no data exist on specific electrocardiogram (ECG) patterns in children and adolescents. A prolongation of the QT interval on the ECG has been correlated to an increased risk for sudden cardiac death, and medical treatment is warranted in patients with long QT syndrome (LQTS). Moreover, several drugs of common use are contraindicated in LQTS because of their effects on myocardial repolarization.The ECG tracings of 86 UTS patients [mean age (+/-SD): 11.0+/-3.6 years; mean height-SD: -2.6+/-1.0] were analyzed and compared to age-matched control groups of 75 boys (mean age: 11.3+/-3.5 years; mean height-SD: -1.9+/-1.0) and 62 girls (mean age: 10.1+/-3.2 years; mean height-SD: -2.5+/-0.9) with short stature.Eighteen UTS patients (20.9%) had an abnormally prolonged QTc0.45 s in contrast to only one control subject (0.9%). The QTc interval of UTS patients was significantly prolonged compared to that of the controls (p0.01) and normal values.There is an increased prevalence of a long QT interval among UTS patients. This should be taken into account for the cardiovascular screening of such patients. Patients with UTS have an intrinsically prolonged QT interval and as such may be at higher risk for arrhythmias in the context of a QT-prolonging medication. |
| Databáze: | OpenAIRE |
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