RESUMO
A simple, rapid, and precise amperometric method for quantification of dipyrone in pharmaceutical formulations is presented. The proposed method permits determinations in the 10(-7) mol L(-1) of the analyte and enables 90 determinations h(-1), employing only 100 microL of sample per determination. This method is based on the direct quantification of dipyrone in many pharmaceutical products, avoiding cumbersome processes such as previous separations, solvent extraction, or sample filtration. This new procedure was applied to commercial pharmaceutical tablets, and the results obtained were in excellent agreement with the ones obtained by the classical iodometric method.
Assuntos
Anti-Inflamatórios não Esteroides/análise , Discos Compactos , Dipirona/análise , Ouro/análise , Anti-Inflamatórios não Esteroides/química , Discos Compactos/economia , Dipirona/química , Eletrodos/economia , Preparações Farmacêuticas/análiseRESUMO
A simple, rapid and precise amperometric method has been developed for quantification of ascorbic acid (AA) in pharmaceutical formulations using flow-injection analysis (FIA). A slice of recordable compact disc (CD) modified by electrodeposition of platinum was employed as the working electrode. The proposed flow system allows determinations in the 1 mumol l(-1) of the analyte and enables 90 determinations per h, employing only 150-mul sample. The method permits the direct quantification of ascorbic acid in many pharmaceutical products, avoiding cumbersome processes as previous separations, solvent extraction or sample filtration. This new procedure was applied to commercial pharmaceutical tablets and the results obtained were identical than the ones obtained by the classical iodometric method. The calibration plots for freshly prepared ascorbic acid standards were highly linear in the concentration range of 1-10 mumol l(-1) with a relative standard deviation (R.S.D.) <1%. For all real samples studied, the deviations were situated between 0.5 and 8.7%.
RESUMO
Presentamos un caso de un paciente que sufre politraumatismo, incluyendo un trauma raquimedular con paraplejia con nivel motor T9 y traumatismo torácico predominante unilateral con atelectasia masiva del pulmón izquierdo, refractaria al tratamiento habitual, incluyendo ventilación mecánica con PEEP que respondió favorablemente a la aplicación de ventilación mecánica diferencial asincrónica. Este es un método si bien, excepcional, que puede ser de franca utilidad en la resolución terapéutica de patología pulmonar unilateral como en nuestro caso
Assuntos
Humanos , Masculino , Adulto , Respiração Artificial/métodos , Traumatismos Torácicos/terapia , Hemodinâmica/fisiologia , Troca Gasosa Pulmonar/fisiologiaRESUMO
The use of medicinal plants by the patients at the outpatient clinics of five health-care centers in Puerto Rico was evaluated. Medication histories were obtained for 802 patients ranging in age from two months to 91 years. The most frequent medical diagnosis was cardiovascular disease (54% of the patients). Respiratory and digestive disorders were the least frequent conditions, identified in only 9% and 6% of the cases, respectively. Medicinal plants were used by 57% of the population. Patients 65 years or older tended to use herbal remedies more often. Seven of the 11 most commonly used plants were used to treat gastrointestinal disorders. Other medicinal uses given were for sedation, sleep disorders, elevated blood pressure, kidney disorders, and respiratory ailments. The most frequently used plant was Citrus aurantium L. (sour orange), which was used as a sedative by 39% of the patients and for gastrointestinal disorders by 17%. Two potentially toxic plants, Solanum americanum and Annona muricata, were among the most commonly used plants. Medicinal plants were used widely by the outpatient population studied. Most herbs were used to treat self-limiting conditions but some were used to treat potentially serious medical problems, such as hypertension.