Seasonal and monthly variation in occurrence of hypertensive urgency

Marchesi, Chiara; Dentali, Francesco; Maresca, Andrea Maria; Gessi, V.; Manfredini, Roberto; Grandi, Anna Maria

doi:10.1007/s11739-012-0878-6

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The increases in platelets, red cells, and viscosity associated with normal thermoregulatory adjustments to mild surface cooling [23] are capable to enhance the forces favouring wall deformation, and increase friction and shear stress on the aortic internal surface [4]. Although analogous to major cardiovascular events, a peak of winter preference is demonstrated in the occurrence of hypertensive urgency [24], the winter preference in the onset of RAAA cannot be completely explained by ambient temperature alone [4] because of such pattern emerging both in cold and in temperate climate settings [25]. The presence of upper/lower viral respiratory infections and smoking excess characterizes winter [4], and the former may play a possible role in AAA development, while the latter (by interfering with the respiratory tract's ability to defend itself and predisposing to upper/lower respiratory tract infections) may accelerate the onset and progression of AAA [26].…”

Section: Discussionmentioning

confidence: 99%

A meta-analysis of monthly variation in occurrence of abdominal aortic aneurysm rupture

Takagi

Ando

Umemoto

2017

Vasa

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Summary:Background: We performed a meta-analysis to assess the presence of an annual rhythmic variability of ruptured abdominal aortic aneurysm (RAAA) onset. Patients and methods: Eligible studies were observational studies enrolling patients with RAAA and reporting monthly incidence of RAAA. Study-specifi c estimates, i. e. monthly incidence of RAAA, were combined using the random-effects model. Chronobiological analysis was performed by applying a partial Fourier series to pooled monthly incidence by using the weighted least-squares method. Results: We identifi ed 14 eligible studies enrolling a total of 3,798 patients with RAAA. Pooled monthly incidence of RAAA was 8.7 % in January, 7.7 % in February, 8.7 % in March, 7.3 % in April, 7.8 % in May, 7.2 % in June, 7.0 % in July, 7.0 % in August, 8.1 % in September, 8.8 % in October, 8.4 % in November, and 8.3 % in December. Chronobiological analysis identifi ed a signifi cant (p = 0.0020) annual pattern in the occurrence of RAAA with a peak in December to January and a nadir in June to July. Pooled analysis demonstrated signifi cantly more incidence in December than in June (p = 0.03) as well as in January than in July (p = 0.05). Conclusions: A signifi cant annual pattern in the occurrence of RAAA with a peak in December to January and a nadir in June to July was identifi ed with signifi cantly more incidence in December than in June and in January than in July. Keywords:Abdominal aortic aneurysm, meta-analysis, monthly variation, rupture ever, is suggested to be distinct from that of aortic dissection. Synchronous existence of AAA and AAD is believed to be rare [5], and AAD develops in the absence of a preexisting aortic aneurysm in most (> 80 %) cases [6]. Mechanisms for the rupture of AAAs and those for onset of aortic dissection may be not the same. In this article, we performed a meta-analysis to assess the presence of an annual rhythmic variability of exclusive RAAA onset. Materials and methodsAll studies investigating monthly incidence of RAAA were identifi ed using a 2-level search strategy. First, databases including MEDLINE and EMBASE were searched through March 2017 using web-based search engines (PubMed and OVID). Second, relevant studies were identifi ed through a manual search of secondary sources including references of initially identifi ed articles and a search of reviews and commentaries. All references were downloaded for consolidation, elimination of duplicates,

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Section: Discussionmentioning

confidence: 99%

A meta-analysis of monthly variation in occurrence of abdominal aortic aneurysm rupture

Takagi

Ando

Umemoto

2017

Vasa

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“…Ambient temperature still seems to be a major influential or causal factor of the seasonal variations of AAD and other cardiovascular diseases, even though household and vehicle heating conditions have improved considerably during the last few decades. Pathogenic mechanisms likely include higher blood pressure levels, increased incidence of hypertensive crisis, 33 changes in hematologic properties leading to aortic wall deformation, and increasing the friction and shear stress on the aortic intima and aortic endothelial function. 34 This winter peak of AAD occurrence may be linked to exposure to the more elevated concentration of ambient air pollutants, especially the fine particulate matter (PM2.5) 17,35,36 during the winter, which is associated with aortic plaque progression and can lead to hypertension and aortic constriction.…”

Section: Commentmentioning

confidence: 99%

Chronologic and Climatic Factors of Acute Aortic Dissection: Study of 1642 Patients in Two Continents

Ma¹,

Li²,

Zhang³

et al. 2020

The Annals of Thoracic Surgery

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“…We read with a great interest the article published by Marchesi et al [1] in the journal ''Internal and Emergency Medicine'' entitled ''Seasonal and monthly variation in occurrence of hypertensive urgency''. The authors have demonstrated from a hospital-based study of 360 subjects in Italy that the peak number of hypertensive urgency episodes occurred in December and the nadir in May.…”

Section: Dear Editormentioning

confidence: 99%