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Acute electrophysiologic consequences of pyridostigmine inhibition of cholinest...

The cardiovascular electrophysiologic basis for the action of pyridostigmine, an acetylcholinesterase inhibitor, has not been investigated. The objective of the present study was to determine the cardiac electrophysiologic effects of a single dose of pyridostigmine bromide in an open-label, quasi-experimental protocol. Fifteen patients who had been indicated for diagnostic cardiac electrophysiologic study under...

Abnormal response of left ventricular systolic function to submaximal exercise ...

Patients with heart failure who have undergone partial left ventriculotomy improve resting left ventricular systolic function, but have limited functional capacity. We studied systolic and diastolic left ventricular function at rest and during submaximal exercise in patients with previous partial left ventriculotomy and in patients with heart failure who had not been operated, matched for maximal and submaximal...

Hybrid or continuous renal replacement techniques for unstable haemodynamic pat...

Comparative study to evaluate the impact of a hybrid renal replacement technique (HRRT) vs a continuous renal replacement technique (haemodiafiltration) on hemodynamic tolerance, azotemic control, and mortality in critical care patients with acute renal failure.a 14-bed Intensive Care Unit (ICU).Two groups of patients were retrospectively compared: patients submitted to continuous renal replacement techniques (...

The role of secondary hyperparathyroidism in left ventricular hypertrophy of pa...

End-stage renal disease (ESRD) patients frequently develop structural cardiac abnormalities, particularly left ventricular hypertrophy (LVH). The mechanisms involved in these processes are not completely understood. In the present study, we evaluated a possible association between parathyroid hormone (PTH) levels and left ventricular mass (LVM) in patients with ESRD. Stable uremic patients on intermittent hemod...

Time course of changes in heart rate and blood pressure variability in streptoz...

Autonomic neuropathy is a frequent complication of diabetes associated with higher morbidity and mortality in symptomatic patients, possibly because it affects autonomic regulation of the sinus node, reducing heart rate (HR) variability which predisposes to fatal arrhythmias. We evaluated the time course of arterial pressure and HR and indirectly of autonomic function (by evaluation of mean arterial pressure (M...

Caracterização e avaliação de germoplasma exotico e cultivado de Arachis hipoga...

Dados de passaporte; Caracterização morfologica; Caracterização agronômica; Caracterização fisiologica. ; 1997

Malignant forms of Plasmodium falciparum malaria.