865 resultados para stochastic and dynamic analysis


Relevância:

100.00% 100.00%

Publicador:

Resumo:

Dissertação de mestrado em Biologia Molecular, Biotecnologia e Bioempreendedorismo em Plantas

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Tese de Doutoramento em Ciência Política e Relações Internacionais

Relevância:

100.00% 100.00%

Publicador:

Resumo:

OBJECTIVE: Growing evidence suggests that sudden death after an acute myocardial infarction (AMI) correlates with autonomic nervous system imbalance. Parasympathomimetic drugs have been tested to reverse these changes. However, their effects on ventricular function need specific evaluation. Our objective was to analyze pyridostigmine's (PYR) effect on hemodynamic and echocardiographic variables of ventricular function. METHODS: Twenty healthy volunteers underwent Doppler echocardiographic evaluations, blood pressure (BP), and heart rate (HR) assessment at rest, before and 120 min after ingestion of 30 mg PYR or placebo, according to a double-blind, placebo-controlled, crossed and randomized protocol, on different days. RESULTS: PYR was well tolerated and did not cause alterations in BP or in ventricular systolic function. A reduction in HR of 10.9±1.3% occurred (p<0,00001). There was an A wave reduction in the mitral flow (p<0.01) and an E/A ratio increase (p<0.001) without changes in the other diastolic function parameters (p>0.05). CONCLUSION: PYR reduces HR and increases E/A ratio, without hemodynamic impairment or ventricular function change.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

OBJECTIVE: To analyze the frequency and prevalence of congenital heart defects in a tertiary care center for children with heart diseases. METHODS: We carried out an epidemiological assessment of the first medical visit of 4,538 children in a pediatric hospital from January 1995 to December 1997. All patients with congenital heart defects had their diagnoses confirmed at least on echocardiography. The frequency and prevalence of the anomalies were computed according to the classification of sequential analysis. Age, weight, and sex were compared between the groups of healthy individuals and those with congenital heart defects after distribution according to the age group. RESULTS: Of all the children assessed, 2,017 (44.4%) were diagnosed with congenital heart disease, 201 (4.4%) with acquired heart disease, 52 (1.2%) with arrhythmias, and 2,268 (50%) were healthy children. Congenital heart diseases predominated in neonates and infants, corresponding to 71.5% of the cases. Weight and age were significantly lower in children with congenital heart defects. Ventricular septal defect was the most frequent acyanotic anomaly, and tetralogy of Fallot was the most frequent cyanotic anomaly. CONCLUSION: Children with congenital heart defects are mainly referred during the neonatal period and infancy with impairment in gaining weight. Ventricular septal defect is the most frequent heart defect.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Informatik, Diss., 2011

Relevância:

100.00% 100.00%

Publicador:

Resumo:

PEEC, computational electromagnetics

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Naturwiss., Diss., 2010

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Mathematik, Diss., 2010

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Verfahrens- und Systemtechnik, Diss., 2015

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Otto-von-Guericke-Universität Magdeburg, Fakultät für Mathematik, Univ., Dissertation, 2015

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Otto-von-Guericke-Universität Magdeburg, Fakultät für Elektrotechnik und Informationstechnik, Univ., Dissertation, 2015

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Otto-von-Guericke-Universtität Magdeburg, Fakultät für Wirtschaftswissenschaft, Univ., Dissertation, 2015