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[ECG changes in hypertrophic cardiomyopathy in children (data of routine and circadian ECG)]
Insights
Routine and circadian electrocardiography (ECG) in children with hypertrophic cardiomyopathy revealed significant myocardial hypertrophy in most patients. Daily ECG monitoring effectively identified rhythm and conduction disorders, particularly in the obstructive form.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Research
Background:
- Hypertrophic cardiomyopathy (HCM) is a significant cause of pediatric heart disease.
- Understanding ECG findings in pediatric HCM is crucial for diagnosis and management.
Purpose of the Study:
- To analyze routine and circadian electrocardiogram (ECG) findings in children with hypertrophic cardiomyopathy.
- To assess the prevalence of myocardial hypertrophy and rhythm/conduction disorders.
- To compare ECG findings between obstructive and non-obstructive HCM forms.
Main Methods:
- Analysis of routine and circadian electrocardiograms (ECG).
- Study included 32 children diagnosed with hypertrophic cardiomyopathy.
- Comparison of ECG data based on obstructive and non-obstructive disease forms.
Main Results:
- Myocardial hypertrophy was detected in 90.6% of children, with left ventricular hypertrophy being most common.
- Rhythm and conduction disorders were identified in 93.8% of children using daily ECG monitoring.
- Obstructive HCM showed significantly higher rates of hypertrophy and arrhythmias compared to non-obstructive HCM.
Conclusions:
- Circadian ECG monitoring is valuable for detecting arrhythmias and conduction abnormalities in pediatric HCM.
- Left ventricular hypertrophy is a prominent ECG finding in this population.
- Obstructive HCM is associated with more frequent and severe ECG abnormalities.
Abstract:
Analysis is made of the routine and circadian ECG in 32 children with hypertrophic cardiomyopathy. The signs of myocardial hypertrophy of some or other parts of the heart were discovered in 29 children (90.6%). The signs of left ventricular hypertrophy were the most suggestive ones, whereas the signs of left atrial hypertrophy and right heart hypertrophy were observed less frequently. The use of the daily ECG monitoring allowed rhythm and conduction disorders to be revealed in 30 children (93.8%). It should be mentioned that in patients with the obstructive form of the disease, the signs of myocardial hypertrophy and heart arrhythmia on the ECG occurred much more often than in children suffering from the non-obstructive form. In accordance with the observations, prognostically unfavourable disorders of heart rhythm are not characteristic of children, they occur rarely, being primarily seen in the obstructive form of the disease. The daily ECG monitoring not infrequently allows the identification of heart arrhythmias and transitory disorders of conduction, which cannot be recorded on routine electrocardiography.