Publications by authors named "Walter Vilella A Vicente"
Background: Infectious endocarditis (IE) refers to infection of the endocardial surface of the heart and usually occurs in native or prosthetic valves.
Objective: This study aimed to raise IE data reflecting the surgical therapy in a University Hospital in the interior of the State of Sao Paulo-Brazil.
Method: Retrospective and observational approach of 328 patients with IE who underwent surgery between 1982 and 2020.
Objective: To examine if methylene blue (MB) can counteract or prevent protamine (P) cardiovascular effects.
Methods: The protocol included five heparinized pig groups: Group Sham -without any drug; Group MB - MB 3 mg/kg infusion; Group P - protamine; Group P/MB - MB after protamine; Group MB/P - MB before protamine. Nitric oxide levels were obtained by the nitric oxide/ozone chemiluminescence method, performed using the Nitric Oxide Analizer 280i (Sievers, Boulder, CO, USA).
Purpose: To verify if the methylene blue (MB) administration prevents and/or reverses the compound 48/80 (C48/80)-induced anaphylactic shock in pigs.
Methods: Female Dalland pigs were anesthetized and had the hemodynamic parameters recorded during the necessary time to administer some drugs and observe their effect. The animals were randomly assigned to one of the five groups: 1) control; 2) MB: the animals received a bolus injection of MB (2 mg/kg) followed by continuous infusion of MB (2.