open access
Assessment of the relationship between non-dipping phenomenon and heart rate turbulence
open access
Abstract
Methods: A total of 122 patients were allocated into four groups: normotensive/dipper, n = 33; normotensive/non-dipper, n = 31; hypertensive/dipper, n = 29; and hypertensive/non-dipper, n = 29. HRT indices (turbulence slope [TS] and turbulence onset [TO]) were calculated from 24-h ambulatory electrocardiographic recordings.
Results: TS values were higher (TS = 10.0 ± 3.4 vs 8.0 ± 1.5, p = 0.004) and TO values were lower (TO = –2.9 [–3.6, –2.2] vs –2.0 [–2.3, –1.9], p = 0.037) in the dipper subgroup of normotensive cases than in the non-dipper subgroup of normotensive cases. Similarly, TS values were higher (TS = 8.4 ± 3.5 vs 6.2 ± 2.9, p = 0.012) and TO values were lower (TO = –2.1 [–3.4, –2.0] vs –1.6 [–1.9, –0.2], p = 0.003) in the dipper subgroup of hypertensive cases than in the non-dipper subgroup of hypertensive cases. Spearman’s correlation analyses revealed a high positive correlation between percentage of dipping and TS (r = 0.600, p = 0.001) and a higher negative correlation between percentage of dipping and TO (r = –0.653, p = 0.001).
Conclusions: Blunting of the nocturnal fall in BP is associated with impaired HRT indices in both normotensive and hypertensive groups. (Cardiol J 2012; 19, 2: 140–145)
Abstract
Methods: A total of 122 patients were allocated into four groups: normotensive/dipper, n = 33; normotensive/non-dipper, n = 31; hypertensive/dipper, n = 29; and hypertensive/non-dipper, n = 29. HRT indices (turbulence slope [TS] and turbulence onset [TO]) were calculated from 24-h ambulatory electrocardiographic recordings.
Results: TS values were higher (TS = 10.0 ± 3.4 vs 8.0 ± 1.5, p = 0.004) and TO values were lower (TO = –2.9 [–3.6, –2.2] vs –2.0 [–2.3, –1.9], p = 0.037) in the dipper subgroup of normotensive cases than in the non-dipper subgroup of normotensive cases. Similarly, TS values were higher (TS = 8.4 ± 3.5 vs 6.2 ± 2.9, p = 0.012) and TO values were lower (TO = –2.1 [–3.4, –2.0] vs –1.6 [–1.9, –0.2], p = 0.003) in the dipper subgroup of hypertensive cases than in the non-dipper subgroup of hypertensive cases. Spearman’s correlation analyses revealed a high positive correlation between percentage of dipping and TS (r = 0.600, p = 0.001) and a higher negative correlation between percentage of dipping and TO (r = –0.653, p = 0.001).
Conclusions: Blunting of the nocturnal fall in BP is associated with impaired HRT indices in both normotensive and hypertensive groups. (Cardiol J 2012; 19, 2: 140–145)
Keywords
ambulatory blood pressure; heart rate turbulence; dipper
About this articleTitle
Assessment of the relationship between non-dipping phenomenon and heart rate turbulence
Journal
Issue
Pages
140-145
Published online
2012-03-30
Page views
872
Article views/downloads
1753
DOI
10.5603/cj.23021
Bibliographic record
Cardiol J 2012;19(2):140-145.
Keywords
ambulatory blood pressure
heart rate turbulence
dipper
Authors
Levent Sahiner
Sercan Okutucu
Ugur Nadir Karakulak
Kudret Aytemir
Sefik Gorkem Fatihoglu
Ergun Baris Kaya
Giray Kabakci
Lale Tokgozoglu
Hilmi Ozkutlu
Ali Oto
