OBJECTIVE: To assess a possible relationship between prematurity and casual blood pressure (BP) by means of 24-hour ambulatory BP monitoring (ABPM). STUDY DESIGN: ABPM was performed in 41 children aged 5 to 17 years who were born prematurely with (n = 11) or without intrauterine growth restriction, and in 27 matched children who were born at term with a birth weight appropriate for gestational age. RESULTS: Although BP did not differ between the preterm group and control subjects during the daytime, nocturnal standardized systolic BP was elevated (P < .05) and a lack of nocturnal decrease was more prevalent in the preterm children compared with the control subjects (73% versus 41%, P = .01). The difference was caused by a marked increase of nighttime systolic BP in the light-for-date children (1.17 +/- 0.61 standard deviation scores; P < .01), although preterm children with appropriate weight (0.33 +/- 1.00) were not different from control subjects (0.09 +/- 0.73). Nighttime BP standard deviation scores were closely correlated with standardized heart rate, compatible with a role of sympathetic hyperactivation. CONCLUSION: Subtle abnormalities of BP regulation, indicated by a selective increase of nocturnal systolic BP, are present during childhood in subjects born prematurely, and are prominent in those with intrauterine growth restriction.
OBJECTIVE: To assess a possible relationship between prematurity and casual blood pressure (BP) by means of 24-hour ambulatory BP monitoring (ABPM). STUDY DESIGN: ABPM was performed in 41 children aged 5 to 17 years who were born prematurely with (n = 11) or without intrauterine growth restriction, and in 27 matched children who were born at term with a birth weight appropriate for gestational age. RESULTS: Although BP did not differ between the preterm group and control subjects during the daytime, nocturnal standardized systolic BP was elevated (P < .05) and a lack of nocturnal decrease was more prevalent in the preterm children compared with the control subjects (73% versus 41%, P = .01). The difference was caused by a marked increase of nighttime systolic BP in the light-for-date children (1.17 +/- 0.61 standard deviation scores; P < .01), although preterm children with appropriate weight (0.33 +/- 1.00) were not different from control subjects (0.09 +/- 0.73). Nighttime BP standard deviation scores were closely correlated with standardized heart rate, compatible with a role of sympathetic hyperactivation. CONCLUSION:Subtle abnormalities of BP regulation, indicated by a selective increase of nocturnal systolic BP, are present during childhood in subjects born prematurely, and are prominent in those with intrauterine growth restriction.
Authors: Femke de Jong; Michael C Monuteaux; Ruurd M van Elburg; Matthew W Gillman; Mandy B Belfort Journal: Hypertension Date: 2011-12-12 Impact factor: 10.190
Authors: Joseph T Flynn; Derek K Ng; Grace J Chan; Joshua Samuels; Susan Furth; Bradley Warady; Larry A Greenbaum Journal: J Pediatr Date: 2014-03-31 Impact factor: 4.406