Normal Reactions to Orthostatic Stress in Rett Syndrome

Autor/inn/en	Larsson, Gunilla; Julu, Peter O. O.; Engerstrom, Ingegerd Witt; Sandlund, Marlene; Lindstrom, Britta
Titel	Normal Reactions to Orthostatic Stress in Rett Syndrome
Quelle	In: Research in Developmental Disabilities: A Multidisciplinary Journal, 34 (2013) 6, S.1897-1905 (9 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0891-4222
DOI	10.1016/j.ridd.2013.02.027
Schlagwörter	Females; Metabolism; Genetic Disorders; Human Body; Stress Variables; Comparative Analysis; Severity (of Disability) + Suchen Sie Ihr Suchwort? Weibliches Geschlecht; Stoffwechsel; Menschlicher Körper; Schweregrad
Abstract	The aim of this study was to investigate orthostatic reactions in females with Rett syndrome (RTT), and also whether the severity of the syndrome had an impact on autonomic reactions. Based on signs of impaired function of the central autonomic system found in RTT, it could be suspected that orthostatic reactions were affected. The orthostatic reactions in 21 females with RTT and 14 normally developed females matched by age were investigated when they rose from a sitting position, and during standing for 3 min. Reactions of the heart, the blood pressure and the time for recovery of systolic blood pressure, were studied in real time, heartbeat by heartbeat, simultaneously. There was no difference between participants with RTT and the normally developed controls regarding general orthostatic reactions (heart rate, systolic and diastolic blood pressure, and mean arterial pressure) when getting up from a sitting position, and when standing erect for 3 min. In the specific immediate response by the heart to standing up, the 30:15 ratio, significantly lower values were found for females with RTT. In the RTT group, the maximum fall of systolic blood pressure showed a tendency to a larger decrease, and the initial decrease in systolic blood pressure was significantly faster. The time for recovery of systolic blood pressure from standing erect did not differ between groups. At baseline the females with RTT had significantly lower systolic blood pressure and a tendency to a higher heart rate. The results do not indicate any autonomic limitations for people with RTT in getting up from a sitting position and standing. The participants with RTT had normal orthostatic reactions indicated by the heart and blood pressure responses when standing erect for 3 min. A faster initial drop in systolic blood pressure in people with RTT was notable. (Contains 3 tables and 1 figure.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10