Seasonal variation in prevalence of hypertension: Implications for interpretation

Sinha, Pragya; Dk, Taneja; Singh, Narender; Saha, Renuka

doi:10.4103/0019-557x.70537

Cited by 28 publications

(17 citation statements)

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“…Сезонная вариабельность артериального давления (АД) показана во многих исследованиях у лиц различных воз-растов, как с нормальным уровнем АД, так и у больных АГ tients [18][19][20][21]. Systolic and diastolic BP are characterized by peaks during both winter and summer periods.…”

Section: Winter Cardiovascular Morbidity In Ivanovo Region сердечно-сunclassified

“…Mean values of EWMI for stroke for the five years of followup were slightly negative. The only exception was 2011 year with the excess winter morbidity of [18][19][20][21]. И систолическое, и диастолическое АД характе-ризуются пиками как в зимний, так и в летний период.…”

Section: Winter Cardiovascular Morbidity In Ivanovo Region сердечно-сunclassified

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Excess winter cardiovascular morbidity in Ivanovo Region in 2009-2013 years

Kontsevaya

Balanova

Loukianov

et al. 2015

Racionalʹnaâ farmakoterapiâ v kardiologii

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Chronic non-infectious diseases are characterized by irregular morbidity and mortality throughout a year. Aim. To study excess cardiovascular morbidity during winter in Ivanovo Region in 2009-2013 years. Material and methods. Excess winter morbidity index (EWMI) was calculated using special formula. The incidence of cardiovascular diseases (CVDs) was determined according to the data from the medical information-analytic center of Ivanovo Region. The index was calculated for CVDs in general, for arterial hypertension (HT) and for acute forms of CVDs (acute myocardial infarction and stroke). Results. The mean EWMI for CVDs for 5 years of the follow-up made up to 77.2% and was higher in women than in men (80% vs 69.5%, respectively). People of working age had lower excess winter morbidity than the population older than working age (53.1% and 88%, respectively). EWMI for CVDs had significant variability and ranged from 29.0% (2013 year) to 81.1% (2010 year) in men and from 25.2% to 82.9% in women in the same years. In general, the 5-year mean EWMI for HT was 72.7%; it was higher in men than in women in most of the analyzed years of follow-up. We had revealed the heterogeneity of the EWMI for HT during the analyzed period in each analyzed group (the minimal values were found in 2011 after the heat wave in 2010). EWMI for myocardial infarction demonstrated excess winter morbidity, men and women had in general similar indices (31.0% and 28.4%, respectively), but it was higher in people of working age as compared with the older ones. This index had a wide range of values. In case of stroke we had revealed no excess winter morbidity; this index was equal throughout a year. Conclusion. The influence on excess winter morbidity can result in the reduction of cardiovascular morbidity and mortality due to the decreased effect of risk factors; it would also optimize a load on healthcare system, the season irregularity of which must be taken into account when planning a work of medical centers. Материал и методы. Проведен расчет индекса избыточной заболеваемости в зимний период (ИИЗЗП) по специальной формуле. Количество ССЗ определяли по данным медицин-ского информационно-аналитического центра Ивановской области. Индекс рассчитывали для ССЗ в целом, для артериальной гипертензии (АГ) и для острых форм ССЗ (инфаркт мио-карда и инсульт). Результаты. Средний ИИЗЗП для ССЗ за 5 лет составил 77,2%, и оказался у женщин несколько выше, чем у мужчин (80,0% против 69,5%, соответственно). Среди лиц трудоспособ-ного возраста избыточная заболеваемость в зимний период оказалась ниже, чем среди населения старше трудоспособного возраста (53,1 и 88%, соответственно). ИИЗЗП для ССЗ характеризовался значительной вариабельностью и колебался от 29,0% (2013 г.) до 81,1% (2010 г.) у мужчин и от 25,2% до 82,9% у женщин в те же годы. Средний за 5 лет ИИЗЗП для АГ в целом составил 72,7%, выше -у мужчин в сравнении с женщинами в большинстве анализируемых лет наблюдения. Выявлена неоднородность показателя ИИЗЗП для АГ в течение анализируемого периода в ка...

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Section: Winter Cardiovascular Morbidity In Ivanovo Region сердечно-сunclassified

Excess winter cardiovascular morbidity in Ivanovo Region in 2009-2013 years

Kontsevaya

Balanova

Loukianov

et al. 2015

Racionalʹnaâ farmakoterapiâ v kardiologii

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“…It is similar to previous studies which showed that cold induced a sharp rise in BP and heart rate which are more marked in the first few minutes. 7,8 In this study, also significant rise in BP was seen after cold exposure in the first five minutes which came down towards baseline during the next five minutes. Moreover, in this study rise in diastolic BP was found to be more than rise in systolic BP.…”

Section: Discussionmentioning

confidence: 66%

The measurement of blood pressure in winter season and its co-relation with blood pressure after cold exposure in summer season: a cross-sectional study in Gauhati medical college and hospital, Guwahati, Assam, India

Chakrabarty

Bora

2017

Int J Res Med Sci

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Background: The aim of the study was to correlate the change in blood pressure in winter season to that in summer season after exposure to localized cold stimuli.Methods: Basal blood pressure in healthy males of 20-40 years was recorded during winter season by conventional method using sphygmomanometer and stethoscope. During summer, the same subjects were taken and their baseline blood pressure was recorded. Thereafter their feet were immersed in cold water at 12 degree centigrade and blood pressure was recorded at 5 minutes and 10 minutes interval. The systolic and diastolic BP during winter, summer (baseline), and after 5 minutes and 10 minutes of cold exposure was compared. P value <0.001 as obtained by using student t test (student graph pad) was taken as significantResults: It was observed that systolic and diastolic BP showed a significant increase (p<0.001) in response to the cold stimuli. The increase was comparable to the rise in BP during winter.Conclusions: Present study has revealed a higher systolic and diastolic BP in winter and in summer after cold stimuli than baseline summer BP; So we conclude that subjects with borderline hypertension who are more likely to develop higher BP in winter season are also likely to develop high BP after cold stimuli in summer season.

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“…The issue is also important for surveillance as data collected in different seasons may not find true trends. [19] Significant increase in SBP and DBP during winter may be for several reasons viz. external temperature, physical activity, seasonal variation in noradrenalin, catecholamine and vasopressin, vitamin D, and serum cholesterol among others.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Variation in Arterial Blood Pressure

2016

AIMDR

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Background: There is need to evaluate influence of weather changes on blood pressure in human population that has often been ignored in clinical practice guidelines. Objectives: Present study was planned to find the seasonal variation of blood pressure. Methods: Seasonal variation in blood pressure was examined in 1081 participants of age 18 years and over from both genders, 540 from rural and 541 from urban practice area of Department of Community Medicine of tertiary care teaching hospital of Ludhiana. Information was obtained on demographic and socioeconomic characteristics and socio-economic status followed by clinical examination. Anthropometric measurements included weight, height, waist circumference, hip circumference, waist and hip ratio, Body Mass Index. Blood pressure was recorded and classified based on JNC VII criteria. Data was obtained on four different seasons (winter, summer, monsoon and post-monsoon) as defined by Indian meteorological department. Results: Present study showed that there is significant increase in the blood pressure in study population during winter and significant fall in summer in both systolic (SBP) and diastolic blood pressures (DBP) irrespective of age, sex, socioeconomic status, occupation. The variation in SBP between summer and winter season was maintained across all the age groups except in elderly where maximal difference was observed in monsoon -summer seasons. Mean SBP and DBP were higher in 41 to 50 years and more than 60 year age group; females have a higher increase in both mean SBP and DBP. Advancement in age and females gender confirmed more significant changes in blood pressure across ambient temperatures. Conclusion: Our study showed that climatic changes influence the blood pressure recordings and should also be considered for management of hypertension.

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Seasonal variation in prevalence of hypertension: Implications for interpretation

Abstract: Significant increase in prevalence of hypertension during winter compared to summer indicates need for considering this factor while comparing prevalence reported in different studies as well as interpreting the surveillance data based on repeat surveys.

Cited by 28 publications

References 0 publications

Excess winter cardiovascular morbidity in Ivanovo Region in 2009-2013 years

Excess winter cardiovascular morbidity in Ivanovo Region in 2009-2013 years

The measurement of blood pressure in winter season and its co-relation with blood pressure after cold exposure in summer season: a cross-sectional study in Gauhati medical college and hospital, Guwahati, Assam, India

Seasonal Variation in Arterial Blood Pressure

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