A comparative study of established z score models for coronary artery diameters in 181 healthy Korean children / 소아과
Korean Journal of Pediatrics
;
: 373-378, 2017.
Article
in English
| WPRIM
| ID: wpr-72671
ABSTRACT
PURPOSE:
The aim of this study was to investigate the statistical properties of four previously developed pediatric coronary artery z score models in healthy Korean children.METHODS:
The study subjects were 181 healthy Korean children, whose age ranged from 1 month to 15 years. The diameter of each coronary artery was measured using 2-dimensional echocardiography and converted to the z score in the four models (McCrindle, Olivieri, Dallaire, and Japanese model). Descriptive statistical analyses and 1-sample t tests were performed.RESULTS:
All calculated z scores had P values of ≥0.050 using the Kolmogorov-Smirnov test. The one sample t test showed that the mean z scores did not converge to zero except in 1 model, and the mean right coronary artery (RCA) z score was less than zero in all 4 models. The smaller RCA diameter in this study could be associated with the more distal measuring point used to avoid the conal branch. The percentage of subjects with extreme z score values (≥2.0 and ≥2.5) for the left main coronary artery (LMCA) seems to be higher in the Dallaire (4.9% and 3.3%) and Japanese models (7.1% and 3.8%).CONCLUSION:
All 4 models showed statistical feasibility of normal distribution. More precise instructions would be needed for the measurement of the RCA. The higher percentage of extreme z scores for the LMCA is compatible with the basic understanding of anatomic variation in the LMCA.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Echocardiography
/
Coronary Vessels
/
Asian People
/
Anatomic Variation
/
Mucocutaneous Lymph Node Syndrome
Type of study:
Prognostic study
Limits:
Child
/
Humans
Language:
English
Journal:
Korean Journal of Pediatrics
Year:
2017
Type:
Article
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