Daniela Caetano Costa

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OBJECTIVES The differential diagnosis between essential tremor (ET) and Parkinson's disease (PD) may be, in some cases, very difficult on clinical grounds alone. In addition, it is accepted that a small percentage of ET patients presenting symptoms and signs of possible PD may progress finally to a typical pattern of parkinsonism. Ioflupane,(More)
BACKGROUND Characterized as a sudden and temporary loss of consciousness and postural tone, with quick and spontaneous recovery, syncope is caused by an acute reduction of systemic arterial pressure and, therefore, of cerebral blood flow. Unsatisfactory results with the use of drugs allowed the nonpharmacological treatment of neurocardiogenic syncope was(More)
This study aimed to analyze the agreement between measurements of unloaded oxygen uptake and peak oxygen uptake based on equations proposed by Wasserman and on real measurements directly obtained with the ergospirometry system. We performed an incremental cardiopulmonary exercise test (CPET), which was applied to two groups of sedentary male subjects: one(More)
Using single photon emission computerized tomography (SPECT), we demonstrated that in patient A, a 20-year-old male with polycythaemia, the cerebral blood flow was decreased (presumably as a result of increased viscosity and or microemboli), probably leading to frightening visual distortions (dysmorphopsia) associated with scintillating specks of bright(More)
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