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Title: Investigation of the interactions between breathing, beat by beat changes in RR intervals, and beat by beat changes in systolic pressure levels
Author: Bowers, Emma Jane
ISNI:       0000 0001 3472 6748
Awarding Body: Newcastle University
Current Institution: University of Newcastle upon Tyne
Date of Award: 2008
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Blood pressure is constantly changing due to internal and external influences. The body counteracts these changes via the baroreflex by altering heart rate, stroke volume and peripheral resistance. The integrity of the baroreflex is often measured by baroreflex sensitivity (BRS), the ratio of change in RR-interval to change in systolic pressure (SP). The simple model assumed by BRS is a black box, with an input, SP levels, and an output, RR-intervals, therefore BRS represents the gain of the system. If RR-intervals and SP levels are changing cyclically, for example in response to regular breathing, the phase offset between the input and output can also be measured.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available