Fetal sinus bradycardia and the long QT syndrome
| Autor: | Helmut Singer, Theresa Menéndez, Michael Hofbeck, Ernst Beinder, Tomas Grancay |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
medicine.medical_specialty
Cardiotocography Sinus bradycardia Long QT syndrome Sudden death QT interval Electrocardiography Fetal Heart Internal medicine Tachycardia Heart rate medicine Bradycardia Humans Arrhythmia Sinus medicine.diagnostic_test business.industry Infant Newborn Obstetrics and Gynecology Infant Fetal Bradycardia Sudden infant death syndrome medicine.disease Long QT Syndrome Anesthesia Cardiology medicine.symptom business |
| Zdroj: | American journal of obstetrics and gynecology. 185(3) |
| ISSN: | 0002-9378 |
| Popis: | Objective: Recent evidence in literature shows that the long QT syndrome accounts for a fraction of the sudden infant death syndrome. Newborn infants with prolongation of the Q-T interval often show sinus bradycardia, which led us to test whether children who were diagnosed with long QT syndrome also show sinus bradycardia in the cardiotocogram before birth. Study Design: We identified 18 children who were born from singleton pregnancies at or near term in whom long QT syndrome (corrected QT interval, >0.440 second) was diagnosed after birth or in childhood. Cardiograms during pregnancy and delivery were available from 17 of the 18 children. Results: The cardiotocogram showed persistent fetal sinus bradycardia (baseline heart rate permanently below 120 beats/min) in 12 of 17 fetuses (71%) with long QT syndrome. Two fetuses had additional intermittent tachyarrhythmias. Conclusion: Sinus bradycardia in the cardiotocogram during delivery or in pregnancy may indicate long QT syndrome in the fetus. Postnatal electrocardiography should be performed in these children to rule out or confirm a prolongation of the Q-T interval. (Am J Obstet Gynecol 2001;185: 743-7.) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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