Quantifying the speed of fluctuations in systolic blood pressure
| Autor: | Valentina A. Rossi, Malcolm Kohler, Christian F. Clarenbach, Giovanni Camen, Noriane A. Sievi, Arnoldus J. R. van Gestel |
|---|---|
| Přispěvatelé: | University of Zurich, van Gestel, Arnoldus J R |
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Physiology Blood Pressure 610 Medicine & health Risk Assessment Risk profile 2705 Cardiology and Cardiovascular Medicine Pulmonary Disease Chronic Obstructive Young Adult Risk groups Risk Factors Internal medicine Internal Medicine Humans Medicine In patient Risk factor Aged Sleep Apnea Obstructive business.industry Reproducibility of Results Blood Pressure Determination 1314 Physiology Blood Pressure Monitoring Ambulatory Middle Aged Blood pressure Cardiovascular Diseases 2724 Internal Medicine 10076 Center for Integrative Human Physiology Hypertension Cardiology 570 Life sciences biology Female 10178 Clinic for Pneumology Cardiology and Cardiovascular Medicine business Algorithms |
| Zdroj: | Hypertension Research. 36:1039-1044 |
| ISSN: | 1348-4214 0916-9636 |
| DOI: | 10.1038/hr.2013.62 |
| Popis: | Increased blood pressure variability (BPV), even in the absence of hypertension, has been identified as an important independent cardiovascular risk factor (CVRF). However, the role of the speed of changes in systolic blood pressure (SBP; vSBP) on cardiovascular risk needs to be investigated. The objective of this study was to investigate whether subjects with a high cardiovascular risk profile have an increased degree and speed of changes in SBP compared with subjects with low or no risk. Resting beat-to-beat blood pressure (BP) was recorded for 5 min. Standard BPV measures in both time and frequency domains were conducted. The s.d. of SBP (s.d.-SBP) values was used to quantify the degree of BPV. vSBP was assessed by calculating the slopes of oscillatory fluctuations in SBP for different interbeat intervals (IBI). Subjects were allocated to one of four groups according to the number of CVRFs (0, 1, 2, ≥ 3 CVRF). Of 122 subjects, 19.7% had 0 CVRF, 27.0% had 1, 32.0% had 2 and 21.3% had ≥ 3 CVRFs. There was an increase in vSBP across the four risk groups. The vSBP in patients without CVRF was 3.12 (1.09), 1 CVRF 3.23 (1.07), 2 CVRF 4.16 (2.26) and ≥ 3 CVRF 4.22 (1.66; P = 0.015). The s.d.-SBP was not significantly different between the cardiovascular risk groups. The speed of fluctuations in SBP rather than the degree of BPV is pronounced in patients with elevated cardiovascular risk. Increased speed of BP fluctuations may thus be a contributing mechanism to cardiovascular morbidity. |
| Databáze: | OpenAIRE |
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