High Home Blood Pressure Variability Associates With Exaggerated Blood Pressure Response to Cold Stress
| العنوان: | High Home Blood Pressure Variability Associates With Exaggerated Blood Pressure Response to Cold Stress |
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| المؤلفون: | Matti Mäntysaari, Mikko P. Tulppo, Juhani Hassi, Karl-Heinz Herzig, Hannu Rintamäki, Sirkka Keinänen-Kiukaanniemi, Tiina M. Ikäheimo, Jari Jokelainen, Heidi E. Hintsala, Riitta Antikainen, Antti M. Kiviniemi, Jouni J. K. Jaakkola |
| المصدر: | American Journal of Hypertension. 32:538-546 |
| بيانات النشر: | Oxford University Press (OUP), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Time Factors, Evening, Systole, Blood Pressure, 030204 cardiovascular system & hematology, Essential hypertension, 03 medical and health sciences, 0302 clinical medicine, Trial number, Heart Rate, Predictive Value of Tests, Internal medicine, Heart rate, Internal Medicine, Humans, Medicine, 030212 general & internal medicine, Cold stress, Aged, Morning, business.industry, Cold-Shock Response, Reproducibility of Results, Blood Pressure Monitoring, Ambulatory, Middle Aged, medicine.disease, Cold Temperature, Blood pressure, Hypertension, Cardiology, business |
| الوصف: | BACKGROUND Exaggerated sympathetic cardiovascular (CV) reactivity to stress associates with elevated risk for clinical and preclinical end points of CV disease. It would be useful to identify these individuals, preferably from feasible measurements commonly used in health care. Our study examined the association between home blood pressure (BP) variability and cardiac workload response to whole-body cold exposure. METHODS Seventy-five men (55–65 years, 46 hypertensive) measured BP at home twice in the morning and evening for a week. We computed systolic home BP variability as SD of daily means and divided the subjects into groups demonstrating either high or low BP variability. They were exposed to whole-body cold exposure (−10 °C, wind 3 m/second, 15 minutes, winter clothes, standing). BP and heart rate were measured at 3-minute intervals during, and 15 minutes before and after the exposure. Rate-pressure product (RPP) was calculated to represent cardiac workload. RESULTS Subjects with high systolic home BP variability demonstrated a greater RPP increase in cold conditions compared to those with low BP variability [mean change from baseline (95% CI): 1,850 (1,450 to 2,250) bpm × mm Hg vs. 930 (610, 1,250) bpm × mm Hg, P < 0.01]. This was related to the augmented systolic BP change [31(28, 35) mm Hg vs. 23(20, 26) mm Hg, P < 0.01]. Home BP variability correlated with cold-related RPP (rS = 0.34, P = 0.003) and systolic BP (rS = 0.38, P < 0.001) responses. CONCLUSIONS Moderate whole-body cold exposure increased BP and cardiac workload more among those with higher systolic home BP variability, independently of home BP level. Elevated home BP variability may indicate augmented sympathetically mediated vascular reactivity for environmental stressors. PUBLIC TRIALS REGISTRY NUMBER Trial Number NCT02007031. |
| تدمد: | 1941-7225 0895-7061 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b52a238ed6a6d867929f07933ceda8d7 https://doi.org/10.1093/ajh/hpz011 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b52a238ed6a6d867929f07933ceda8d7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19417225 08957061 |
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