Acute myocardial infarction in a child with myocardial bridge

Abstract

Abstract:

BACKGROUND: Myocardial infarction (MI) is rare in children, and Kawasaki disease is now recognized as the main cause for MI. In this report, we present a child with MI caused by myocardial bridge (MB).
METHODS: A 7.5-year-old boy was admitted to Weifang People’s Hospital on September 16, 2008 for heart disease. By electrocardiogram, coronary CT angiography, emission computed tomography, and other examinations, he was initially diagnosed as having (1) acute inferior myocardial infarction and extensive anterior myocardial infarction; (2) fulminant myocarditis; or (3) coronary myocardial bridge. He was treated with oxygen, thrombolysis, myocardial nutrition, vitamin C (4.0 g per time), dexamethasone (7.5 mg per time), a large dose of gamma globulin, and interferon.
RESULTS: Myocardial enzymes, liver function, C-reactive protein, and troponin-I returned to normal at 21 days after treatment. At 29 days, electrocardiogram indicated that II, III, aVF, V4 - V6 leads had abnormal Q wave, and ST-T changed. The patient was discharged.
CONCLUSION: Myocardial bridge may be one of the causes of MI in children.

Key words: Myocardial bridge, Electrocardiogram, Acute myocardial infarction

Xiao-dong Liu, Chun-lei Sun, Su-ping Mu, Xiao-mei Qiu, Hai-ying Yu. Acute myocardial infarction in a child with myocardial bridge[J]. World Journal of Emergency Medicine, 2011, 2(1): 70-72.

Figures/Tables 2

References 14

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Cardiac markers	1st day	2nd day	3rd day	5th day	11th day	21th day	29th day	Reference number
AST (IU/L)	422	490	596	246	52	37	42	8-47
LDH (IU/L)	1211	1250	1552	960	573	286	231	103-198
α-HBDH (U/L)	1165	1218	1234	994	556	259	204	95-165
CK (U/L)	2248	761	336	98	37	28	33	26-140
CK-MB (IU/L)	147	72	35	22	18	14	7.0	0-15
CTnI (ng/ml)	43.43	26.45	19.43	5.41	1.59	0.05	0.03	0-0.04

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