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Echocardiographic parameters in adolescents with sleep‐related breathing disorders
Author(s) -
SánchezArmengol Ángeles,
RodríguezPuras María J.,
FuentesPradera María A.,
QuintanaGallego Esther,
BorjaUrbano Guadalupe,
Cayuela Aurelio,
Capote Francisco
Publication year - 2003
Publication title -
pediatric pulmonology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 106
eISSN - 1099-0496
pISSN - 8755-6863
DOI - 10.1002/ppul.10303
Subject(s) - medicine , isovolumetric contraction , supine position , cardiology , diastole , respiratory disturbance index , cardiorespiratory fitness , isovolumic relaxation time , anesthesia , diastolic function , blood pressure , polysomnography , apnea
Few data are known about the effects of sleep‐related breathing disorders (SRBD) on the cardiovascular system in adolescents. Forty healthy adolescents (mean age, 13.7 ± 1.6 years) answered a questionnaire regarding symptoms of sleep‐related breathing disorders (SRBD) and underwent a cardiorespiratory polygraphy and echocardiography. Echocardiographic data in snorers with polygraphic abnormalities suggestive of SRBD (positive group, n = 29) were compared with the results in nonsnorers without polygraphic abnormalities (n = 11) who were included in the control group. Ventricular dimensions and indices of left ventricular systolic function were within normal limits and were not significantly different between the two groups. Indices of left ventricular diastolic function were also within normal limits, but isovolumetric relaxation time (IVRT) was significantly longer among the positive group (72.5 ± 8.4 msec) than among the controls (65.1 ± 7.9 msec) ( P = 0.018). Multiple regression analysis showed that posterior wall thickness was predicted by a model that included cardiac events related with respiratory events and/or desaturations, and respiratory disturbance index (RDI) in supine position. Deceleration of early diastolic flow was predicted by RDI, percentage of total recording time with SaO 2 < 90% (CT 90 ), and age; the variability of isovolumetric relaxation time was predicted by a model that included RDI in supine position. We found a significant relationship between polygraphic parameters suggestive of SRBD and echocardiographic measurements of ventricular dimensions and diastolic function. Also, echocardiographic parameters suggestive of some degree of left ventricular diastolic dysfunction were found in snoring adolescents with polygraphic abnormalities. Pediatr Pulmonol. 2003; 36:27–33. © 2003 Wiley‐Liss, Inc.