Aspects of Non-Dipping Blood Pressure Variations in Juvenile, Middle-Aged, And Adult Kazakhs: OAJBS Publishers
Aspects of Non-Dipping Blood Pressure Variations in Juvenile, Middle-Aged, And Adult Kazakhs by Hiroshi Kawamura* in Open Access Journal of Biomedical Science (OAJBS)
Juvenile,
middle-aged, and elderly Kazakhs have been found to exhibit non-dipping blood
pressure variations (BPV). Such variations are seen more often in middle-aged
and elderly Kazakhs than in juvenile Kazakhs. The purpose of this study was to
determine whether non-dipping BPV become more common in Kazakhs with advancing
age and to compare the characteristics of non-dipper and dippers in order to
clarify the effects of ageing on non-dipping type BPV. We performed ambulatory
blood pressure monitoring. Juvenile, middle-aged, and elderly Kazakhs were
enrolled. Each age group was further divided into those with dipping and
non-dipping type BPV. We analyzed systolic blood pressure (SBP) variations with
the maximum entropy method (MEM). Dippers and non-dippers accounted for 81% and
19% of the juvenile Kazakhs, 48% and 52% of the middle-aged Kazakhs, and 28%
and 72% of the elderly Kazakhs, respectively. MEM analysis revealed that among
the middle-aged and elderly Kazakhs the SBP variations of the non-dippers exhibited
a 24-hour periodicity with a weak power spectral density as well as an
ultradian periodicity. These features may have contributed to the generation of
a decreased circadian rhythm in SBP, and thus, ultimately led to the nondipping
SBP variations observed in the middle-aged and elderly non-dipping Kazakhs. The
non-dipping type BPV may have resulted from an effect of aging in Kazakhs since
non-dipping BPV variations were more common in middle-aged and elderly Kazakhs
than in juvenile Kazakhs.
https://biomedscis.com/fulltext/aspects-of-non-dipping-blood-pressure-variations-in-juvenile-middle-aged-and-adult-kazakhs.ID.000367.php
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