Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/14102
ชื่อเรื่อง: The postural autonomic regulation of pulpal blood flow
ผู้แต่ง: Ajcharanukul O.
Chunhacheevachaloke E.
Vorachart P.
Chidchuangchai W.
Keywords: adrenergic system
adult
article
autonomic nervous system
blood flow
blood pressure
body posture
comparative study
female
heart output
heart rate
human
instrumentation
laser Doppler flowmetry
leg
male
physiology
premolar tooth
supine position
time
tooth pulp
vascularization
Adult
Autonomic Nervous System
Bicuspid
Blood Pressure
Cardiac Output
Dental Pulp
Female
Heart Rate
Humans
Laser-Doppler Flowmetry
Leg
Male
Posture
Regional Blood Flow
Supine Position
Time Factors
Vasomotor System
Young Adult
วันที่เผยแพร่: 2013
บทคัดย่อ: Evidence suggests that postural changes in systemic blood pressure may significantly affect blood flow in the dental pulp. This in vivo study examined the responses of pulpal perfusion, systemic blood pressure, and heart rate to postural changes in humans. The experiments were done on 21 premolars in 16 participants aged 20-31 yrs. Pulpal blood flow recordings were measured by means of a laser Doppler Flowmeter. A blood pressure monitor was used to record blood pressure and heart rate. All measurements were simultaneously recorded for 1 min, 5 min after participants made postural changes. Changing from supine to standing caused a significant reduction in pulpal perfusion, while heart rate and diastolic blood pressure increased significantly. A significant non-linear relationship was found between percentage changes in pulpal perfusion and heart rate resulting from standing up. We speculate that when patients arise from the supine position, the shift in venous blood to the legs transiently (2-10 sec) lowers venous return and cardiac output, causing less inhibition of the vasomotor center, which, in turn, results in increased heart rate and blood pressure, but a decrease in pulpal blood flow. These results suggest that pulpal blood flow is affected by postural change, presumably via the autonomic nervous system. © 2012 International & American Associations for Dental Research.
URI: https://ir.swu.ac.th/jspui/handle/123456789/14102
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872378090&doi=10.1177%2f0022034512469025&partnerID=40&md5=fa073f9c23a6c0b802f91e18d57d070b
ISSN: 220345
Appears in Collections:Scopus 1983-2021

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