Tétanos secundario a mordedura y arañazo de gato en una paciente previamente vacunada / Tetanus after cat scratch and bites in a previously immunized patient

Tetanus is declining due to vaccination, professional labor management and appropriate wound care. Tetanus cases have been reported despite immunization. We report the case of a previously healthy 21 years old female patient that presented a mild generalized tetanus requiring admission after mild and recurrent cat scratch and bites. She had received six vaccine shots during childhood, and a booster dose five years earlier after a rabbit bite. Symptoms appeared seven weeks after the last contact, and included headache, muscle spasms and mild opisthotonus. Laboratory evaluation, including CSF analysis and microbiological investigation, as well as imaging studies were all normal. The patient received 6,000 IU of human antitoxin immunoglobulin. No autonomic manifestations or respiratory compromise were registered. Symptoms resolved rapidly and she was discharge after seven days with an order to complete a tetanus toxoid immunization schedule with three doses. Conclusions. Tetanus is possible in urban settings with a declining epidemiologic curve of disease in previously immunized patients. Severity of disease is modulated by previous vaccination.

El tétanos está en declinación gracias a la vacunación, manejo profesional del parto y el cuidado apropiado de las heridas. Se han reportado casos a pesar de la inmunización. Presentamos el caso clínico de una mujer previamente sana de 21 años que presentó un tétanos generalizado leve, luego de repetidas mordeduras y arañazos de su gato. Había recibido su esquema completo de seis dosis de vacuna antitetánica en la infancia y un refuerzo hacía cinco años luego de una mordedura por conejo. Los síntomas aparecieron siete semanas después del último contacto e incluyeron cefalea, espasmos musculares y opistótonos leve. La evaluación de laboratorio, incluyendo un estudio del LCR e imágenes fueron normales. La paciente recibió inmunoglobulina humana antitetánica. No hubo manifestaciones autonómicas ni compromiso respiratorio. Los síntomas regresaron rápidamente y se dio de alta a los siete días con indicación de completar tres dosis de vacuna antitetánica. Conclusiones: El tétanos es posible en ambientes urbanos con una curva epidemiológica en descenso en pacientes previamente inmunizados. La gravedad del cuadro es modulada por la vacunación previa.

Aterosclerosis en la mujer: factores de riesgo y prevención / Atherosclerosis in women: risk factors and its prevention

Summary: Heart Disease is the leading cause of death among women in Chile. It appears at younger ages than most people think and the risk increases during aging. Although mortality has declined in men in recent years, women have increased. Cardiovascular risk factors, including menopause, are critical in atherogenesis, and explained 90 percent of heart attacks in women, and greater morbimortality. Cardiovascular risk factors, differently affect men and women. In turn, mortality from cardiovascular disease increases with the number of risk factors, which increase after menopause, especially obesity, hypertension and dyslipidemia, which could be associated with metabolic factors mediated by hormonal changes. Framingham tables underestimate the risk of women classified as 90 percent of women at low risk and very few at high risk before age 70. The recommendations are appropriate management of cardiovascular risk factors to prevent atherosclerosis, with a thorough individual risk assessment to identify women at risk. Hormone replacement therapy is not indicated as cardiovascular prevention.

Evolución del compromiso cardiovascular de pacientes insuficientes renales, en hemodiálisis, sin bloqueo del eje renina-angiotensina / Cardiovascular assessment of non diabetic patients on hemodialysis

Background: Diabetes mellitus is an important risk factor for cardiovascular complications among patients on hemodialysis. However, the incidence of these complications among non diabetic patients on hemodialysis is not well known. Aim: To assess the incidence of cardiovascular complications in non diabetic patients on hemodialysis. Patients and methods: Seventy five non diabetic patients aged 55.6 ± 17 years (48 males), receiving hemodialysis three times a week were evaluated with laboratory tests, echocardiogram anda carotid ultrasound. In 26 patients, interleukin 6, tumor necrosis factor alpha, and intercellular adhesión molecule (ICAM-1) were also measured. Patients were followed during two years. Results: The mean lapse of dialysis therapy was 6.5 ±5 years. The main cause of renal failure was hypertension. Sixty two percent had systolic hypertension, 86 percent had concentric left ventricular hypertrophy, 43 percent had atrial dilatation and 60 percent had calcifications in the thoracic aorta. Compared with normal controls, patients had higher levels of interleukin 6, tumor necrosis factor alpha and ICAM-1. Carotid media thickness was also higher and increased in the two years of follow up. No correlations were found between ventricular hypertrophy and dialysis lapse, packed red cell volume, calcium phosphorus product, parathormone levels or median arterial pressure. No cardiovascular events were recorded during the follow up period. Conclusions: Non diabetic patients on chronic hemodialysis have a high frequency of ventricular hypertrophy, carotid media thickening, aortic calcifications and an increase in proinflammatory cytokines.