[Studies on cardiac function in children aged 8-12 with simple obesity].
Ninety-four obses children and 74 normal controls aged 8-12 were measured simultaneously by physiological polygraph, electrocardiograph, phonocardiograph, carotid arterial pulse contour and intracardiac impedance differential graph to analyze their cardiac function. Results revealed systolic blood pressure, diastolic blood pressure, mean arterial pressure, left ventricular ejection time and stroke volume in obese children were higher than those in controls, no significant difference in cardiac output between them could be seen, and cardiac index in the former was lower than that in the latter. It suggested due to increase of venous return to the heart and rise of blood pressure in obese children, their preload and afterload of the heart increased, cardiac muscular contraction strengthened for compensation, cardiac output per unit body surface area declined, and part of their cardiac function indexes had been affected.
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Division of Nutritional Health Care, Child Development Center of China, Beijing.
Zhu
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D001794:Blood Pressure; D002302:Cardiac Output; D002648:Child; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D009765:Obesity / Q000503:physiopathology*; D013318:Stroke Volume