Francisco Radrigan

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The head-up tilt test has demonstrated to be useful in the study of patients with syncope of unknown origin for the diagnosis of neurocardiogenic syncope. Several publications have described different methods, with different results in cases as well as in controls. We performed a prospective study in a group of normal subjects in order to evaluate the(More)
BACKGROUND Latin America is a heterogeneous region made up of different populations, cultures, latitudes, altitudes, and immigrants from different areas and ethnic groups. OBJECTIVE The purpose of this study is to describe the clinical and demographic profile of patients with osteoarthritis (OA) evaluated by a selected group of rheumatologists in 13 Latin(More)
BACKGROUND Patients with inactive systemic lupus erythematosus (SLE) and elevated high affinity double-stranded anti-DNA antibodies (anti-dsDNA), measured using Farr technique, would have a risk of relapse that fluctuates between 40 to 80% according to different series. AIM To study the association between anti-dsDNA levels measured using Farr technique(More)
The aim of this work was to assess the hemodynamic responses to the tilt test of 51 patients with syncope (n = 31) or presyncope (n = 20) of unknown etiology. A protocol with an inclination of 70 degrees (20 min) with or without isoproterenol (mean dose of 3.6 +/- 0.3 ug/min), was used. Forty five percent of patients had a positive test, 18 with(More)
Antiphospholipid antibodies are commonly related to connective tissue disorders, the use of certain drugs, and infection. It is thought that antiphospholipid syndrome (APS) is associated primarily with connective tissue disorders. We describe a healthy young male who had an episode of APS that was associated with cytomegalovirus infection and who developed(More)
OBJECTIVE The objective of this consensus is to update the recommendations for the treatment of hand, hip, and knee osteoarthritis (OA) by agreeing on key propositions relating to the management of hand, hip, and knee OA, by identifying and critically appraising research evidence for the effectiveness of the treatments and by generating recommendations(More)
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