ECG findings after myocardial infarction in children after Kawasaki disease
Standard 12-lead ECGs were evaluated in 17 children with myocardial infarction and 78 children without myocardial infarction after Kawasaki disease; sensitivity and specificity of the ECG infarction criteria were determined. The presence or absence of myocardial infarction was determined from either clinical examination results (coronary angiography, ventriculography, and thallium-201 myocardial imaging) or autopsy findings. Of seven patients with inferior infarction, abnormally deep Q waves in lead II, III, or aVF were observed in six, but the duration was greater than 0.04 second in only one (14%). The sensitivity and specificity of inferior infarction criteria based on Q wave amplitude were 86% and 97%, respectively. Of eight patients with anterior infarction, seven (88%) had abnormally deep and wide (greater than or equal to 0.04 second) Q waves in anterior chest leads. The sensitivity and specificity of the infarction criteria based on the amplitude and duration of the Q wave were 75% and 99%, respectively. Of seven patients with lateral infarction, Q waves were observed in lead I, aVL, or both in four patients, and in all of these patients Q waves were wider than 0.04 second. In two patients with both inferior and anterior infarction, Q waves were observed only in leads II, III, and aVF; in only one patient were the Q waves wider than 0.04 second. Thus deep Q waves in lead II, III, or aVF that are not wider than 0.04 second may indicate inferior infarction in children. Q waves in lead I, aVL, and chest leads associated with anterolateral infarction are in most instances deep and wide.
- Research Organization:
- Heart Institute of Japan, Tokyo
- OSTI ID:
- 6603916
- Journal Information:
- Am. Heart J.; (United States), Journal Name: Am. Heart J.; (United States) Vol. 116:4; ISSN AHJOA
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
AGE GROUPS
BETA DECAY RADIOISOTOPES
BIOMEDICAL RADIOGRAPHY
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CHILDREN
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGRAMS
DISEASES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
HEART
HEAVY NUCLEI
IMMUNE SYSTEM DISEASES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LYMPH NODES
LYMPHATIC SYSTEM
MEDICINE
MYOCARDIAL INFARCTION
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPES
RADIOLOGY
SECONDS LIVING RADIOISOTOPES
SENSITIVITY ANALYSIS
SPECIFICITY
THALLIUM 201
THALLIUM ISOTOPES