Objectives: The prevalence of hypertensive emergencies and urgencies and of acute hypertension-mediated organ damage (aHMOD) in emergency departments is unknown. Moreover, the predictive value of symptoms, blood pressure (BP) levels and cardiovascular risk factors to suspect the presence of aHMOD is still unclear. The aim of this study was to investigate the prevalence of hypertensive emergencies and hypertensive urgencies in emergency departments and of the relative frequency of subtypes of aHMOD, as well as to assess the clinical variables associated with aHMOD. Methods: We conducted a systematic literature search on PubMed, OVID, and Web of Science from their inception to 22 August 2019. Two independent investigators extracted study-level data for a random-effects meta-analysis. Results: Eight studies were analysed, including 1970 hypertensive emergencies and 4983 hypertensive urgencies. The prevalence of hypertensive emergencies and hypertensive urgencies was 0.3 and 0.9%, respectively [odds ratio for hypertensive urgencies vs. hypertensive emergencies 2.5 (1.4–4.3)]. Pulmonary oedema/heart failure was the most frequent subtype of aHMOD (32%), followed by ischemic stroke (29%), acute coronary syndrome (18%), haemorrhagic stroke (11%), acute aortic syndrome (2%) and hypertensive encephalopathy (2%). No clinically meaningful difference was found for BP levels at presentations. Hypertensive urgency patients were younger than hypertensive emergency patients by 5.4 years and more often complained of nonspecific symptoms and/or headache, whereas specific symptoms were more frequent among hypertensive emergency patients. Conclusion: Hypertensive emergencies and hypertensive urgencies are a frequent cause of access to emergency departments, with hypertensive urgencies being significantly more common. BP levels alone do not reliably predict the presence of aHMOD, which should be suspected according to the presenting signs and symptoms.
Background: Ascending aorta (ASC) dilatation (AAD) is a common finding in arterial hypertension, affecting about 15% of hypertensive patients. AAD is associated with an increase in cardiac and vascular hypertension-related organ damage, but its prognostic role is unknown. The aim of the study was to evaluate the prognostic value of AAD as predictor of cardiovascular events in essential hypertensive patients.Methods: Recruited patients underwent two-dimensional transthoracic echocardiography from 2007 to 2013 and followed-up for cardiovascular events until November 2018 by phone call and hospital information system check. ASC diameter and AAD were defined using both absolute and scaled definitions. Four hundred and twenty-three hypertensive patients were included in our study.Results: During a median follow-up of 7.4 years (interquartile range 5.6-9.1 years), 52 events were observed. After adjusting for age, sex and BSA, both ASC diameter and AAD definition, according to ARGO-SIIA project, resulted associated with a greater risk of cardiovascular event (both P < 0.010), even after adjusting for major confounders (both P < 0.010). Moreover, we observed that the assessment of ASC improves risk stratification compared with pulse wave velocity alone, and that in absence of AAD, sinus of valsalva dilatation lost any prognostic value (P ¼ 0.262).Conclusions: ASC diameter and AAD are both associated with a greater risk of cardiovascular events. ASC should be assessed to optimize risk stratification in hypertensive patients and its dilatation may be considered as a surrogate for vascular organ damage.
Objective: The prevalence of hypertensive emergencies (HEs) and urgencies (HUs) and of acute hypertension-mediated organ damage (aHMOD) in emergency departments (EDs) is unknown. Moreover, the predictive value of symptoms, blood pressure (BP) levels and cardiovascular risk factors to suspect the presence of aHMOD is still unclear. The aim of this study was to investigate the prevalence of HEs and HUs in EDs and of the relative frequency of subtypes of aHMOD, as well as to assess the clinical variables associated with aHMOD. Design and method: We conducted a systematic literature search on Pubmed, OVID and Web of Science from their inception to August 22, 2019. Two independent investigators extracted study-level data for a random-effects meta-analysis. Results: Eight studies were analysed, including 1970 HEs and 4983 HUs. The prevalence of HEs and HUs was 0.3% and 0.9%, respectively (O.R.for HUs vs HEs:2.5 (1.4–4.3)). Pulmonary oedema/heart failure was the most frequent subtype of aHMOD (32%), followed by ischemic stroke (29%), acute coronary syndrome (18%), haemorragic stroke (11%), acute aortic syndrome (2%) and hypertensive encephalopathy (2%). No clinically meaningful difference was found for BP levels at presentations. HU patients were younger than HE patients by 5.4 years and more often complained of non-specific symptoms and/or headache, while specific symptoms were more frequent among HE patients. Conclusions: HEs and HUs are a frequent cause of access to EDs, with HUs being significantly more common. BP levels alone do not reliably predict the presence of aHMOD, which should be suspected according to the presenting signs and symptoms.
Arterial stiffness is a marker of cardiovascular damage and an independent predictor of major cardiovascular events, usually assessed via Carotid-Femoral Pulse Wave Velocity (cfPWV). The aim of this study was to test the feasibility and usefulness of aortic strain analysis using a simplified transthoracic echocardiography (TTE) speckle-tracking (ST) based method. 60 consecutive patients with normal blood pressure and aortic dimensions underwent TTE and cfPWV evaluation. Strain analysis was performed on the largest section of the ascending aorta (aA) with a dedicated software; three couples of speckles were identified within the anterior and posterior aortic wall and transverse segments connecting each couple traced. Peak ascending Aorta Strain (PaAS) was defined as the averaged peak percentage deformation of these segments during the cardiac cycle; aortic stiffness index β was defined as 100 × Ln(SBP/DBP)/PaAS. 17 patients were excluded for suboptimal TTE images. In the 43 analyzed individuals (male 58%, age 63 years) PaAS was 5.5 [3.7-8.6] % with excellent inter and intra observer reproducibility (ICC 95% for both). PaAS showed significant correlation with age (r = - 0.64), aA diameter (r = - 0.45), cfPWV (r = - 0.41), stroke volume (r = - 0.41) and heart rate (r = - 0.49). Age remained the only independent determinant of PaAS in a multivariate analysis. β (10.8 [5.9-15.0]) showed significant direct correlation with age, Pulse pressure, aA diameter and cfPWV. A simplified strain analysis of the ascending aorta is technically feasible with good reproducibility; PaAS and β index correlate well with established parameters of arterial stiffness and might represent a new index in evaluating vascular biomechanics.
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