Clonidine as pre-anesthetic medication in cataract extraction: comparison between 100 microg and 200 microg.

BACKGROUND AND OBJECTIVES: The objective of the present study was to evaluate the degree of sedation, intraocular pressure, and hemodynamic changes with premedication with low doses of oral clonidine, 100 microg and 200 microg, in outpatient cataract surgeries. METHODS: This is a randomized, double-blind, clinical study undertaken at the Universidade Federal de São Paulo with 60 patients of both genders, physical status ASA 1 and 2, ages 18 to 80 years. Patients were separated into three groups: placebo, clonidine 100 microg, and clonidine 200 microg. Intraocular pressure, heart rate, and blood pressure besides assessment of sedation were measured before and 90 minutes after the administration of clonidine. Sedation levels were classified according to the Ramsay sedation scale. RESULTS: Patients who received placebo and 100 microg of clonidine did not show reduction in heart rate, while a reduction in heart rate was observed in patients who received 200 microg of clonidine, and this difference was statistically significant. Patients who received 200 microg of clonidine also had a reduction in systolic and diastolic blood pressure (p < 0.05). One patient who received 200 microg of clonidine developed severe hypotension, with systolic pressure < 80 mmHg. Patients treated with clonidine had a reduction in intraocular pressure (p < 0.05). Ninety minutes after the oral administration of placebo and 100 microg and 200 microg of clonidine, 25%, 60%, and 80% of the patients respectively were classified as Ramsay 3 or 4. CONCLUSIONS: Clonidine 100 microg can be indicated as premedication for fasciectomies, being effective in sedation and reduction of intraocular pressure, without adverse effects on blood pressure and heart rate.

Clonidina como medicação pré-anestésica em facectomias: comparação entre as doses de 100 µg e 200 µg / La clonidina como medicación preanestésica en facectomías: comparación entre las dosis de 100 µg y 200 µg / Clonidine as pre-anesthetic medication in cataract extration: comparison between 100 µg and 200 µg

Justificativa e objetivos:JUSTIFICATIVA E OBJETIVOS: Avaliar a sedação, a pressão intraocular e as alterações hemodinâmicas com o uso de doses baixas de clonidina, 100 µg e 200 µg por via oral, como medicação pré-anestésica para operações de catarata...

Background and objetives: The objective of the present study was to evaluate the degree of sedation, intraocular pressure, and hemodynamic changes with premedication with low doses of oral clonidine, 100 µg and 200 µg, in outpatient cataract ...

Justificativa y objetivos: Evaluar la sedación, la presión intraocular y las alteraciones hemodinámicas con el uso de bajas dosis de clonidina, 100 µg y 200 µg por vía oral, como medicación preanestésica para operaciones de catarata...

Sarcoma Botrióide de Bexiga: relato de caso / Botryoid sarcoma of the bladder

O sarcoma botrióide é uma neoplasia maligna que acomete os órgäos pélvicos. Os autores relatam o caso mais recente de sarcoma botrióide de bexiga, diagnosticado no Hospital do Câncer do Maranhäo (Hospital Aldenora Bello), discutindo seu diagnóstico, tratamento e aspectos anatomopatológicos.