Publications by authors named "A A Prego"

Published scientific evidence demonstrate the current spread of healthcare misinformation in the most popular social networks and unofficial communication channels. Up to 40% of the medical websites were identified reporting inappropriate information, moreover being shared more than 450,000 times in a 5-year-time frame. The phenomenon is particularly spread in infective diseases medicine, oncology and cardiovascular medicine.

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With the aim of obtaining a map which is useful as a diagnostic tool and therapeutical orientation, complementing the written report of duplex ultrasound venous study, Latin-American Scientific Societies of Phlebology, Vascular Surgery and Vascular Imaging were invited to participate, through their regional representatives, to the First Consensus of Superficial and Perforating Venous Mapping. A consensus process using a modified Delphi method was carried out. An International Working Group was formed, which developed a Prototype of the Venous Mapping that worked as a starting point for consensus, and was presented in a first virtual meeting of 54 experts (societies' representatives) when the methodology was explained.

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Two hundred fifty-eight patients underwent 322 infrainguinal revascularizations with use of polytetrafluoroethylene (PTFE) between 1978 and 1988. The indication was limb salvage in 190 (59%) reconstructions. Two hundred nineteen (68%) were above-knee, and 75 (23%) were below-knee femoropopliteal bypasses.

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This review identifies the causes of PTFE infrainguinal bypass graft failure and compares the results of management alternatives. In 322 infrainguinal reconstructions 111 failures occurred over a ten year interval (1978-1988). Sixty-four percent of all failures occurred within the first year, most within the first six months due to severity or progression of distal disease (56%), which suggests that patient selection is an important factor.

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Seventy-eight patients were evaluated to ascertain the usefulness of markers CA 19-9 and CA 50 in diagnosing pancreatic cancer, using a less specific marker (CEA) as reference. Three groups were considered: a) 36 controls; b) 22 patients with benign obstructive jaundice; c) 20 patients with pancreatic cancer. Preoperative blood samples were obtained to ascertain CEA (E.

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