Medizinische Universität Graz - Research portal
Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Batzel, JJ; Goswami, N; Lackner, HK; Roessler, A; Bachar, M; Kappel, F; Hinghofer-Szalkay, H.
Patterns of Cardiovascular Control During Repeated Tests of Orthostatic Loading
CARDIOVASC ENG. 2009; 9(4): 134-143.
Doi: 10.1007/s10558-009-9086-z
Web of Science
PubMed
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- Leading authors Med Uni Graz
- Batzel Jerry
- Co-authors Med Uni Graz
- Goswami Nandu
- Hinghofer-Szalkay Helmut
- Lackner Helmut Karl
- Rössler Andreas
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- Abstract:
- To investigate patterns of cardiovascular control, a protocol of head up tilt (HUT) followed by lower body negative pressure (LBNP), which represents a significant cardiovascular control challenge, was employed. Linear regression of beat-to-beat heart rate (HR) and mean blood pressure (MBP) data collected over repeated tests was used to analyze control response during the LBNP phase of the combined HUT + LBNP protocol. Four runs for each of 10 healthy young males reaching presyncope were analyzed. Subjects were classified into 2 groups based on the consistency of MBP regulation in response to central hypovolemia induced by LBNP. The consistent group tended to exhibit consistent HR slope (rate of change of HR over time as calculated by linear regression) whereas subjects in the inconsistent group could not be easily classified. Subjects with consistent MBP maintenance exhibited patterns suggesting a consistency of response in cardiovascular control whereas subjects less successful in maintaining MBP exhibited less clearly defined patterns over four runs.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Blood Pressure - physiology
- Computer Simulation -
- Dizziness - physiopathology
- Feedback, Physiological - physiology
- Female -
- Heart Rate - physiology
- Humans -
- Lower Body Negative Pressure -
- Male -
- Models, Cardiovascular -
- Posture - physiology
- Reproducibility of Results -
- Sensitivity and Specificity -
- Tilt-Table Test -
- Find related publications in this database (Keywords)
- Graded orthostatic stress
- Presyncope
- Heart rate
- Blood pressure
- Linear regression