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Titolo:
Electronic activity-monitor-derived sleeping and awake times and diurnal variation of blood pressure
Autore:
OShea, JC; Murphy, MB;
Indirizzi:
Duke Univ, Med Ctr, Durham, NC 27710 USA Duke Univ Durham NC USA 27710Duke Univ, Med Ctr, Durham, NC 27710 USA Natl Univ Ireland Univ Coll Cork, Mercy Hosp, Dept Pharmacol & Therapeut, Cork, Ireland Natl Univ Ireland Univ Coll Cork Cork Ireland Therapeut, Cork, Ireland
Titolo Testata:
BLOOD PRESSURE MONITORING
fascicolo: 2, volume: 5, anno: 2000,
pagine: 65 - 68
SICI:
1359-5237(200004)5:2<65:EASAAT>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEFT-VENTRICULAR HYPERTROPHY; ESSENTIAL-HYPERTENSION; DAMAGE;
Keywords:
ambulatory blood pressure monitoring; electronic activity monitors; diurnal variation; dippers; non-dippers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: O'Shea, JC 2400 Pratt St, Durham, NC 27705 USA 2400 Pratt St Durham NC USA 27705 att St, Durham, NC 27705 USA
Citazione:
J.C. O'Shea e M.B. Murphy, "Electronic activity-monitor-derived sleeping and awake times and diurnal variation of blood pressure", BL PRESS M, 5(2), 2000, pp. 65-68

Abstract

Background Results of a number of studies have indicated that target-organdamage is more pronounced in non-dippers, those in whom the blood pressurefalls by less than 10% with the onset of sleep, than it is in dippers withcomparable clinic blood pressures. However, the standard use of arbitrarily defined daytime and night-time periods, rather than precise estimates of sleeping time and awake time, could limit the accuracy of estimates of diurnal variation of blood pressure and hence of dipping status. Design and methods In this study of 102 consecutive patients undergoing ambulatory blood pressure monitoring we compared activity-derived estimates of sleeping and awake blood pressures using electronic activity monitoring and diary records with estimates determined using pre-defined day and night-time periods. The dipping/non-dipping status of each subject was assessed using these three different techniques for defining the awake/asleep time periods,Results The sleeping/awake times based on the activity monitor, diary and default data were 2356 h +/- 55 min/0754 h +/- 50 min, 2326 h +/- 61 min/0722 h +/- 72 min and 2300 h and 0700 h respectively. The percentage systolic/diastolic falls in blood pressure were 18 +/- 61 18 +/- 7% with six non-dippers (activity-monitor-derived data), 16 +/- 6/17 +/- 8% and 12 non-dippers (diary data) and 13 +/- 7/15 +/- 7% and 21 non-dippers (using the pre-setdaytime and night-time periods),Discussion Results of this study demonstrate that the extent of the diurnal Variation in blood pressure (and hence dipping status) can differ depending on the technique used to define periods of wakefulness and sleep, (C) 2000 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 21:28:51