1,225 research outputs found
Parity as predictor of early hypertension during menopausal transition
Studies regarding the effects of parity on blood pressure in later life produced conflicting results. The aim of our study is to analyse whether parity influences the prevalence of hypertension in perimenopausal and postmenopausal women.
METHODS:
One thousand perimenopausal and postmenopausal women (mean age 55.2\u200a\ub1\u200a5.4 years) were enrolled with a median follow-up of 63.0 months. The study sample consisted of patients who self-referred, in 1998-2009, to the BenEssere Donna Clinic, dedicated to menopause-related disorders.
RESULTS:
One hundred and twenty-two (12.2%) women were nulliparous and 878 (87.8%) had at least one child. Thirty-four (27.9%) women among nulliparous and 326 (37.1%) among parous were hypertensive at baseline (P\u200a=\u200a0.046) and 812 women (81.2%) were in their postmenopausal period. Univariate analysis showed that women with one or more children were at higher risk of being hypertensive [odds ratio (OR): 1.529; 95% confidence interval (CI): 1.006-2.324; P\u200a=\u200a0.047]. Likewise, multivariate analysis revealed that parity (OR: 2.907; 95% CI: 1.290-6.547; P\u200a=\u200a0.010), BMI (OR: 1.097; 95% CI: 1.048-1.149; P\u200a<\u200a0.001) and family history of hypertension (OR: 3.623; 95% CI: 2.231-5.883; P\u200a<\u200a0.001) were independently related to hypertension at baseline. In a subanalysis of 640 initially normotensive women, 109 (17.0%) patients developed hypertension after follow-up, without a statistically significant association with parity (13.6% in nulliparous versus 17.6% in parous; P\u200a=\u200a0.362). Consistently, parity showed no relationship with the incidence of hypertension during follow-up (OR: 1.350; 95% CI: 0.707-2.579; P\u200a=\u200a0.363).
CONCLUSION:
For the first time in a population of White perimenopausal and postmenopausal women, parity was demonstrated to be independently associated with early hypertension during menopausal transition. Conversely, postmenopausal hypertension was not related with parity
Dark Matter searches using gravitational wave bar detectors: quark nuggets and newtorites
Many experiments have searched for supersymmetric WIMP dark matter, with null
results. This may suggest to look for more exotic possibilities, for example
compact ultra-dense quark nuggets, widely discussed in literature with several
different names. Nuclearites are an example of candidate compact objects with
atomic size cross section. After a short discussion on nuclearites, the result
of a nuclearite search with the gravitational wave bar detectors Nautilus and
Explorer is reported. The geometrical acceptance of the bar detectors is 19.5
sr, that is smaller than that of other detectors used for similar
searches. However, the detection mechanism is completely different and is more
straightforward than in other detectors. The experimental limits we obtain are
of interest because, for nuclearites of mass less than g, we find a
flux smaller than that one predicted considering nuclearites as dark matter
candidates. Particles with gravitational only interactions (newtorites) are
another example. In this case the sensitivity is quite poor and a short
discussion is reported on possible improvements.Comment: published on Astroparticle Physics Sept 25th 2016 replaced fig 1
Echocardiographic screening in pediatric asymptomatic or paucisymptomatic coronavirus disease 2019 outpatients: Is it a useful test or an excess of zeal?
IntroductionData regarding echocardiographic findings during follow-up of asymptomatic or pauci-symptomatic coronavirus disease 2019 (COVID-19) are scarce in pediatric patients. The aim of the present study is to assess post-COVID-19 sequelae through echocardiography in children who have experienced mild SARS-CoV-2.MethodsThis single-center, retrospective, observational study enrolled a cohort of 133 pediatric outpatients, born between 2005 and 2022, with a history of asymptomatic or paucisymptomatic SARS-CoV-2 infection, who underwent transthoracic echocardiographic (TTE) evaluation at an outpatient pediatric clinic in Northern Italy.ResultsThe percentage of the pediatric activity of the clinic which was focused on post-COVID evaluation was not negligible, representing almost 10% of the similar to 1500 pediatric patients examined from 1 January 2021 to 31 August 2022. According to ACEP classification, children enrolled in this study had previously experienced in 72.9% (97) asymptomatic COVID-19 and nearly 27% (36) a mild illness. Clinical and instrumental examinations did not show any relevant abnormality in the functional [left ventricular ejection fraction (LVEF), tricuspid annular plane systolic excursion (TAPSE), pulmonary artery systolic pressure (PASP)] or structural [interventricular septum diameter (IVSd), left ventricular internal diameter (LViD, end-diastolic volume (EDV), left atrium volume (LAV)] parameters examined related to SARS-CoV-2 infection in the total of 133 children.ConclusionAccording to our results, children who experienced an asymptomatic or mild SARS-CoV-2 infection should not be systematically investigated with second-level techniques, such as TTE, in the absence of clinical suspicion or other risk conditions such as congenital heart diseases, comorbidities or risk factors
Francesco 4. per la grazia di Dio duca di Modena, Reggio, Mirandola ec. ec. ec. arciduca d'Austria, principe reale d'Ungheria e Boemia
1 manifesto : 60 cm
Incipit del testo: Fra gli oggetti più importanti, che fissarono la nostra attenzione nel sistemare i diversi rami della pubblica amministrazione, ..
Data di emanazione in calce: Modena 3 ottobre 1825
Data di stampa presunta: 1825 (emanazione)
Firmatario in calce
In testa stemma del ducato di Modena e Reggio xilogr
Testo stampato su due colonn
Quark nuggets search using 2350 Kg gravitational waves aluminum bar detectors
The gravitational wave resonant detectors can be used as detectors of quark
nuggets, like nuclearites (nuclear matter with a strange quark). This search
has been carried out using data from two 2350 Kg, 2 K cooled, aluminum bar
detectors: NAUTILUS, located in Frascati (Italy), and EXPLORER, that was
located in CERN Geneva (CH). Both antennas are equipped with cosmic ray shower
detectors: signals in the bar due to showers are continuously detected and used
to characterize the antenna performances. The bar excitation mechanism is based
on the so called thermo-acoustic effect, studied on dedicated experiments that
use particle beams. This mechanism predicts that vibrations of bars are induced
by the heat deposited in the bar from the particle. The geometrical acceptance
of the bar detectors is 19.5 sr, that is smaller than that of other
detectors used for similar searches. However, the detection mechanism is
completely different and is more straightforward than in other detectors. We
will show the results of ten years of data from NAUTILUS (2003-2012) and 7
years from EXPLORER (2003-2009). The experimental limits we obtain are of
interest because, for nuclearites of mass less than grams, we find a
flux smaller than that one predicted considering nuclearites as dark matter
candidates.Comment: presented to the 33rd International Cosmic Ray Conference Rio de
Janeiro 201
Acute myocardial infarction with occlusion of all three main epicardial coronary arteries: When Mother Nature takes care more than physicians
Double-arterial coronary stent thrombosis in acute myocardial infarction (AMI) is an infrequent but severe complication, especially when the third main coronary artery is chronically occluded. The conus artery (CA) can serve as a major source of collateral when the left anterior descendent coronary artery (LAD) becomes obstructed. We report a case of a 48-year-old man presenting with AMI due to a very late double-arterial stent thrombosis (ST) following drug-eluting stent implantation and a chronic occlusion of LAD collateralized by a large anomalous CA, which provided for the entire vascularization of the coronary tree. © 2010 Springer
Experimental evaluation of a solid oxide fuel cell system exposed to inclinations and accelerations by ship motions
Solid Oxide Fuel Cell (SOFC) systems have the potential to reduce emissions from seagoing vessels. However, it is unknown whether ship motions influence the system's operation. In this research, a 1.5 kW SOFC module is operated on an inclination platform that emulates ship motions, to evaluate the influence of static and dynamic inclinations on the system's safety, operation, and lifetime. The test campaign consists of a static inclination test, a dynamic test, a degradation test, and a high acceleration test. There were no interruptions in the power supply during the different tests, and no detectable gas leakages or safety hazards. Although the SOFC does not fail in any test condition, dynamic inclinations result in forced oscillations in the fuel regulation, which propagate through the system by different feedback loops in the control architecture, leading to significant deviations in the operational parameters of the system. Additionally, for motion periods from 16 to 26 s, reoccurring exceedance of the fuel utilisation results in a gradual reduction of the power supply. Several enhancements are recommended to improve the design of SOFCs and marine fuel cell regulations to ensure their safe operation on ships.</p
Obstructive sleep apnea syndrome among obese individuals: A cross-sectional study
sem informaçãoThe obstructive sleep apnea syndrome (OSAS) is a respiratory illness, characterized by recurrent episodes of apnea and hypopnea, leading to reduction or cessation of the airflow. Obesity is one of the major risk factors for the development of OSAS. To hel6310862868sem informaçãosem informaçãosem informaçã
Analysis of 3 years of data from the gravitational wave detectors EXPLORER and NAUTILUS
We performed a search for short gravitational wave bursts using about 3 years
of data of the resonant bar detectors Nautilus and Explorer. Two types of
analysis were performed: a search for coincidences with a low background of
accidentals (0.1 over the entire period), and the calculation of upper limits
on the rate of gravitational wave bursts. Here we give a detailed account of
the methodology and we report the results: a null search for coincident events
and an upper limit that improves over all previous limits from resonant
antennas, and is competitive, in the range h_rss ~1E-19, with limits from
interferometric detectors. Some new methodological features are introduced that
have proven successful in the upper limits evaluation.Comment: 12 pages, 12 figure
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