Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Transposition of the great vessels electrocardiogram
Introduction
Overview
Overview
There are no specific ECG findings associated with TGA. However, sometimes electrocardiogram may show right axis deviation and right ventricular hypertrophy.
Electrocardiogram
Electrocardiogram
- The ECG may be normal in the newborn, but in older patients signs of right ventricular hypertrophy may be seen.[1]
- Periodic electrocardiograms and/or 24-hour Holter monitoring to monitor for atrial arrhythmias should be employed, particularly following atrial-level switch operation.[2]
- Varying degrees of AV block may be seen in all patients.
- The right axis deviation is moderate or absent, in patients with a large VSD, low pulmonary vascular resistance, and LV volume overload.
- On the other hand, the right axis deviation is greater if there is a reduced pulmonary arterial blood flow and reduced LV volume as a result of pulmonary vascular disease or pulmonic stenosis.
References
References
- ↑ Shaher RM, Deuchar DC (March 1966). “The electrocardiogram in complete transposition of the great vessels”. Br Heart J. 28 (2): 265–75. doi:10.1136/hrt.28.2.265. PMC 459068. PMID 4283637.
- ↑ Fernández F, Laurichesse J, Scebat L, Lenègre J (March 1970). “Electrocardiogram in corrected transposition of the great vessels of the bulbo-ventricular inversion type”. Br Heart J. 32 (2): 165–71. doi:10.1136/hrt.32.2.165. PMC 487298. PMID 5440512.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Cafer Zorkun, M.D., Ph.D. [3]; Keri Shafer, M.D. [4]; Kristin Feeney, B.S. [5]