RESUMO
Hypertension in Mexico has a prevalence of 32% and is the second most widespread cause of consultation in primary care. Only 40% of patients in treatment have a blood pressure (BP) below 140/90 mmHg. This clinical trial aimed to compare the effectiveness of the combination of enalapril and nifedipine versus the empirical treatment for hypertension in patients with uncontrolled BP in a primary care center in Mexico City. Participants were randomized to treatment with enalapril and nifedipine (combination group) or to continue with the empirical treatment. Outcome variables were BP control, therapeutic adherence, and adverse effects at 6 months of follow-up. At the end of the follow-up period, BP control (64% versus 77%) and therapeutic adherence (53% versus 93%) showed an improvement from the baseline values in the group that received the combination treatment. BP control (51% versus 47%) and therapeutic adherence (64% versus 59%) in the group who received the empirical treatment did not show improvement from the baseline to follow-up. Combined treatment was 31% more efficacious than conventional empirical treatment (odds ratio = 3.9), which yielded an incremental clinical utility of 18% with high tolerability extent among patients in primary care in Mexico City. These results contribute to the control of arterial hypertension.
RESUMO
Pharmacoepidemiological research about antibiotics is supported by the World Health Organization (WHO), but data regarding antibiotic prevalence based on actual prescriptions and dosing patterns are insufficient. The aims were: (i) To estimate the prevalence and prescribed daily dose (PDD) of antibiotics in outpatients from Mexico City and (ii) to compare the PDD against the defined daily dose (DDD), as established by the WHO. The study included 685 prescriptions of antibiotics selected randomly from five geographical zones of Mexico City. Drug, dose, frequency, and duration of treatment were obtained from each prescription. PDD values of each antibiotic drug were calculated as the average of the daily doses. Sub-use and overuse were determined by the ratio PDD/DDD for each prescription. The most prescribed antibiotics to outpatients from Mexico City included six pharmacological groups: quinolones (28%), penicillins (23%), cephalosporins (17%), macrolides (10%), lincosamides (9%), and sulfonamides (4%). Both overuse and sub-use were high (55% and 63%, respectively). In conclusion, most of the antibiotics with a high prevalence of prescription also had a high rate of either sub-use or overuse, with prescribed doses that significantly differ with their corresponding DDD. The dosing variation has important clinical implications since it denotes low prescription control.
RESUMO
Resumen OBJETIVO: Estimar la prevalencia de desgarro perineal en pacientes a quienes se aplicó vacuum e identificar los factores de riesgo de lesión del esfínter anal. MATERIALES Y MÉTODOS: Estudio descriptivo, transversal, retrospectivo y observacional. Se seleccionaron todos los partos en los que se aplicó vacuum del total de partos instrumentados en un hospital de segundo nivel de la Ciudad de México. Se incluyeron mujeres con embarazo de término, únicos y de evolución normal. Las lesiones perineales se clasificaron según la OMS. Se calcularon la prevalencia y el intervalo de confianza. Las variables se describen mediante medias y desviaciones estándar o frecuencias absolutas y relativas. Los desgarros se compararon con χ22 y los valores con significación estadística fueron los de p < 0.05. RESULTADOS: Se estudiaron 74 partos instrumentados en 708 partos totales, de los que 70 de 74 fueron con vacuum. En relación solo con estos últimos, los desgarros más prevalentes fueron de primer y segundo grado con valores de 40.0% (IC95%: 29-51) y 38.6% (IC95%: 27-50), respectivamente. No se identificaron factores de riesgo asociados con desgarros perineales severos. CONCLUSIONES: La prevalencia en la población estudiada fue similar a la de países industrializados y los desgarros moderados fueron los de mayor prevalencia.
Abstract OBJECTIVES: To estimate the prevalence of perineal tears in patients which delivery was instrumented by vacuum and to identify the risk factors that lead to a tear in the anal sphincter. MATERIAL AND METHOD: Descriptive, cross-sectional, retrospective and observational study. All vacuum deliveries were selected among the instrumental deliveries of the population in a secondary care hospital in Mexico City. The inclusion criteria were women who delivered vaginally at term with sole and normoevolutive pregnancies. The perineal tears were classified according to WHO. The statistical analysis included the estimation of prevalences with their corresponding confidence intervals. Variables were described by means and standard deviations or absolute and relative frequencies. Tears were compared using χ2 tests considering a statistical significance of p < 0.05. RESULTS: The number of instrumented deliveries was 74 out of 708 cases of total deliveries, those with vacuum were 70 out of 74. Considering the instrumented deliveries with vacuum, the most prevalent tears were those of first and second degree with values of 40.0% (CI 29-51) and 38.6% (CI 27-50) respectively. There were not associated risk factors to severe perineal tears. CONCLUSIONS: Prevalence in the studied population was similar to developed countries and moderate tears are the most prevalent.