Seasonal Variation in Chronic Heart Failure Hospitalizations and Mortality in France

Boulay, Fabrice; Berthier, F.; Sisteron, Olivier; Gendreike, Y.; Gibelin, P

doi:10.1161/01.cir.100.3.280

Cited by 160 publications

(141 citation statements)

References 28 publications

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“…Secondly, the study population was younger than in studies in the Northern Hemisphere. 1 Some of them found seasonality was more evident in elderly people 1,3 which was not corroborated in the present study, probably due to less marked seasonal climate changes.…”

Section: Discussioncontrasting

confidence: 89%

“…1,2 During winter months, hemodynamic changes are more accentuated and adverse events are triggered by low temperatures. 1 Recent studies have shown that cardiovascular tissues are the most sensitive to environmental chemicals and pollutants, 3 which can induce blood pressure changes, tissue infl ammation, autonomic imbalance, blood coagulation disorders, and heart rate variability and the ischemic threshold implicated in increased admissions for heart failure. 5 In tropical countries, as in Brazil, there are no studies on the seasonality of hospitalizations for heart failure.…”

Section: Descritoresmentioning

confidence: 99%

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Seasonal variation in hospitalizations due to heart failure in Niterói city, Southeastern Brazil

Jorge¹,

Cagy²,

Mesquita³

et al. 2009

Rev. Saúde Pública

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The objective of the study was to describe seasonality of hospitalizations for heart failure in tropical climate as it has been described in cold climates. Seasonal Auto-regressive Integrated Moving-Average model was applied to time-series data of heart failure hospitalizations between 1996 and 2004 in Niteroi (Southeastern Brazil), collected from the Brazilian National Health Service Database. The standard seasonal variation was obtained by means of moving-average fi ltering and averaging data. The lowest and the highest annual hospital admissions were 507 (1997) and 849 (2002), respectively; the lowest and the highest monthly rates were 419 (December) and 681 (October), respectively. Peak admission rates were seen during the fall and winter. Although weak, the seasonality observed indicates that slight variations result in increased hospitalizations for heart failure.

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Section: Discussioncontrasting

confidence: 89%

Section: Descritoresmentioning

confidence: 99%

Seasonal variation in hospitalizations due to heart failure in Niterói city, Southeastern Brazil

Jorge¹,

Cagy²,

Mesquita³

et al. 2009

Rev. Saúde Pública

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“…According to results of many studies levels of both clinic and ambulatory BP are on an average higher in winter season [9][10][11][12][13]. The highest level of cardiovascular mortality is also coincides with cold season [14][15][16][17][18][19][20]. This had been also confirmed by the studies performed at the National Medical Research Center for Preventive Medicine (NMRC PM) [19][20][21].…”

Section: Blood Pressure Phenotypes фенотипы артериального давленияmentioning

confidence: 76%

“…Согласно результатам мно-гих исследований уровень и клинического, и амбулаторного АД в зимний период в среднем выше [9][10][11][12][13]. Также имен-но в холодное время года отмечается наибольший уровень сердечно-сосудистой смертности [14][15][16][17][18][19][20]. Это подтвер-ждают и исследования, выполненные в НМИЦ ПМ [19][20][21].…”

Section: Blood Pressure Phenotypes фенотипы артериального давленияunclassified

Blood Pressure Phenotypes in Treated Hypertensive Patients in Summer and Winter: Focus on Masked Uncontrolled Hypertension. Part 1: Blood Pressure Phenotypes Prevalence

Смирнова

Горбунов

Boytsov

et al. 2017

Racionalʹnaâ farmakoterapiâ v kardiologii

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Background. The seasonal variability of blood pressure (BP) and cardiovascular morbidity and mortality motivates researchers to search for the new approaches of the antihypertensive treatment (AHT) efficacy assessment, including the analysis of interrelation between clinic and ambulatory BP, i.e. BP phenotypes. Aim. To evaluate the prevalence of BP phenotypes in treated hypertensive outpatients both in winter and summer. Material and methods. Hypertensive patients under regular AHT with available data of clinic BP and 24-hour BP monitoring both in winter and summer seasons (n=477) were selected from a outpatient database with clinic BP <160/100 mm Hg (n=1762). The BP threshold values from current guidelines were used for the BP phenotypes definition. The "controlled hypertension" phenotype was detected when clinic and ambulatory BP levels were less than threshold values, the "uncontrolled hypertension" -when both levels exceeded the thresholds, the "white coat hypertension (WCH) in treated patients" -when clinic BP was only increased, the "masked uncontrolled hypertension" phenotype was ascertained if ambulatory BP was only elevated. Results. The study included 232 patients examined in Ivanovo (a relatively cold region; mean age 53.5±9.3 years; 28% men; clinic BP 121.7±7.9 mm Hg; mean duration of hypertension 4.6±6.3 years) and 245 patients from Saratov (a relatively hot region; mean age 58.3±10.6 years; 56.3% men; clinic BP 127.5±14.9 mmHg; mean duration of hypertension 9.2±9.2 years; р<0.0001). In the Ivanovo cohort, ratio of BP phenotypes in summer and winter did not differ; the "masked uncontrolled hypertension" phenotype prevailed (62.1% and 63.8% in winter and summer, respectively); AHT was effective in 27.6% and 29.7% of the patients in winter and summer, respectively. The prevalence of other phenotypes was low: uncontrolled hypertension -9.5% in winter and 6.0% in summer; WCH in treated patients -less than 1% in both seasons. The prevalence of BP phenotypes in the patients examined in Saratov differed in winter and summer (χ 2 =18.127, р<0.0001); the "masked uncontrolled hypertension" phenotype rate was higher in summer than in winter (50.2% and 32.2%, respectively); the rates of other phenotypes were higher in winter: uncontrolled hypertension -38.8% and 27.8%, controlled hypertension -25.3% and 20.8%, WCH -3.7% and 1.2% in winter and summer, respectively. Conclusion. We have found no seasonal changes in BP phenotypes prevalence in relatively younger hypertensive patients in a relatively cold region. The "masked uncontrolled hypertension" phenotype was predominant (>60%) in this region. In contrast, the cohort of relatively older patients with longer hypertension history examined in a relatively warmer region revealed significantly higher rate of masked uncontrolled hypertension in summer (50.2%) while prevalence of all other phenotypes -in winter.

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“…Los estudios que se han ocupado del tema encuentran mayor tasa de ingresos en los meses invernales y lo atribuyen a factores tales como la mayor ingesta de sodio, episodios arrítmicos agudos, un incremento en la contaminación atmosférica o una superior incidencia de infecciones respiratorias, especialmente la gripe, en los meses fríos (22,23). Nuestro objetivo en este trabajo fue describir y comparar las variaciones estacionales de hospitalización y muerte por insuficiencia cardiaca crónica en la población rural y urbana atendida por nuestro hospital en Vigo.…”

Section: Introductionunclassified

Variaciones estacionales en la hospitalización y mortalidad por insuficiencia cardiaca crónica en Vigo

Santiago¹,

Garcia²,

Dominguez³

et al. 2001

An. Med. Interna (Madrid)

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Seasonal Variation in Chronic Heart Failure Hospitalizations and Mortality in France

Abstract: Clear seasonal variations in adult chronic heart failure hospitalizations and deaths were identified. The considerable economic impact on health care services warrants further epidemiological investigations and a more comprehensive approach to disease management.

Cited by 160 publications

References 28 publications

Seasonal variation in hospitalizations due to heart failure in Niterói city, Southeastern Brazil

Seasonal variation in hospitalizations due to heart failure in Niterói city, Southeastern Brazil

Blood Pressure Phenotypes in Treated Hypertensive Patients in Summer and Winter: Focus on Masked Uncontrolled Hypertension. Part 1: Blood Pressure Phenotypes Prevalence

Variaciones estacionales en la hospitalización y mortalidad por insuficiencia cardiaca crónica en Vigo

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