Synthesis of Bamboo-like Multiwall Carbon Nanotube-Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II).

A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The possible use of the PAA-co-IA/NaOH/B-MWCNT hydrogel as an electrode modifier and pre-concentrator agent for Cd(II) sensing purposes was then evaluated using carbon paste electrodes via differential pulse voltammetry. The presence of the B-MWCNTs in the hydrogel matrix decreased its degree of swelling, stabilized the structure of the swollen gel, and favored the detection of 3 ppb Cd(II), which is comparable to the World Health Organization's allowable maximum value in drinking water. A calibration curve was obtained in the concentration range of 2.67 × 10-8 to 6.23 × 10-7 M (i.e., 3 and 70 ppb) to determine a limit of detection (LOD) of 19.24 µgL-1 and a sensitivity of 0.15 µC ppb-1. Also, the Zn(II), Hg(II), Pb(II) and Cu(II) ions interfered moderately on the determination of Cd(II).

Nocardiosis linfocutánea en paciente inmunocomprometido

RESUMEN Se presenta el caso de un paciente, agricultor, adulto mayor, portador de hipertensión arterial, cardiopatía isquémica y cáncer de próstata con metástasis en hueso en tratamiento conservador. Acude por cuadro de 15 días de evolución con flictenas en miembro superior y fiebre. Durante su internación se aísla en la secreción de piel Nocardia brasiliensis y es tratado con trimetoprin - sulfametoxazol. En el 15° de internación se agrega una neumonía asociada a los cuidados de la salud. Posteriormente se detecta una lesión ósea destructiva en columna a nivel de L3. Sale de alta con el diagnóstico de nocardiosis linfocutánea en paciente inmunocomprometido a los 31 días de internación con buena respuesta clínica y con planes de continuar antibióticoterapia.

ABSTRACT The case of a patient, an elderly farmer who has hypertension, ischemic heart disease and prostate cancer with bone metastases in conservative treatment, is presented. He consults for a 15-day evolution case with flictenas in the upper limb and fever. During hospitalization, Nocardia basiliensis is isolated in the secretion of skin and is treated with trimethoprine - sulfamethoxazole. In the 15th day of hospitalization, health care-associated pneumonia is added. Subsequently, a destructive bone lesion in the spine is detected at the L3 level. He is discharged with the diagnosis of lymphocutaneous nocardiosis in an immunocompromised patient after 31 days of hospitalization with a good clinical response and with plans to continue antibiotic therapy.

Prevalencia de pancreatitis aguda en el embarazo / Prevalence of acute pancreatitis in pregnancy

Objetive: The aim of this study was to determine the prevalence and characteristics of acute pancreatitis during pregnancy in the Hospital de Alta Especialidad de Veracruz in Mexico. Methods: A retrospective, descriptive study of all pregnant patients diagnosed with acute pancreatitis from January to December 2013 treated in our hospital was conducted. Results: 4.478 records of pregnant women were reviewed, 6 had acute pancreatitis during pregnancy, it corresponds to 1 in 746.33 pregnant patients. The age of our patients was 28 +/- 6.30 years (range 15-32 years). The weeks of gestation had a mean of 16.3 +/- 8.7 weeks (range 10-30 weeks). In all cases was mild pancreatitis secondary to gallstones disease. The time of hospital stay was 8.79 +/- 4.26 days (range 7-18 days). Five patients underwent laparoscopic cholecystectomy; a patient did not accept surgery. One fetal death was presented. Conclusion: Acute pancreatitis during pregnancy is a rare complication. The ideal time to perform a cholecystectomy is the second trimester. The prognosis is generally good for both mother and the product.

Objetivo: Determinar la prevalencia y características de la pancreatitis aguda durante el embarazo en el Hospital de Alta Especialidad de Veracruz, México. Material y Métodos: Se realizó un estudio retrospectivo, descriptivo de todas las pacientes embarazadas diagnosticadas con pancreatitis agudas de enero tratadas en este Hospital. Resultados: Se revisaron 4.478 expedientes de mujeres gestantes, de las cuales 6 presentaron pancreatitis aguda durante su embarazo, esto corresponde a una de cada 746,33 pacientes embarazadas. La edad de nuestros pacientes fue de 28 +/- 6,30 años (rango 15-32 años). Las semanas de gestación tuvieron una media de 16,3 +/- 8,7 semanas (rango 10-30 semanas). En todos los casos la pancreatitis fue leve y de origen biliar. El tiempo de estancia intrahospitalaria fue de 8,79 +/- 4,26 días (rango 7-18 días). Cinco pacientes fueron sometidas a colecistectomía laparoscópica y una no aceptó procedimiento quirúrgico. Se presentó un óbito. Conclusión: La pancreatitis aguda durante el embarazo es una complicación poco frecuente. El tiempo ideal para realizar una colecistectomía es el segundo trimestre. El pronóstico es, en general, bueno tanto para la madre como para el producto.

Predictors of in-hospital mortality in patients with ST-segment elevation myocardial infarction undergoing pharmacoinvasive treatment

OBJECTIVES: To identify predictors of in-hospital mortality in patients with acute myocardial infarction undergoing pharmacoinvasive treatment. METHODS: This was an observational, prospective study that included 398 patients admitted to a tertiary center for percutaneous coronary intervention within 3 to 24 hours after thrombolysis with tenecteplase. ClinicalTrials.gov: NCT01791764 RESULTS: The overall in-hospital mortality rate was 5.8%. Compared with patients who survived, patients who died were more likely to be older, have higher rates of diabetes and chronic renal failure, have a lower left ventricular ejection fraction, and demonstrate more evidence of heart failure (Killip class III or IV). Patients who died had significantly lower rates of successful thrombolysis (39% vs. 68%; p = 0.005) and final myocardial blush grade 3 (13.0% vs. 61.9%; p<0.0001). Based on the multivariate analysis, the Global Registry of Acute Coronary Events score (odds ratio 1.05, 95% confidence interval (CI) 1.02-1.09; p = 0.001), left ventricular ejection fraction (odds ratio 0.9, 95% CI 0.89-0.97; p = 0.001), and final myocardial blush grade of 0-2 (odds ratio 8.85, 95% CI 1.34-58.57; p = 0.02) were independent predictors of mortality. CONCLUSIONS: In this prospective study that evaluated patients with ST-segment elevation myocardial infarction treated by a pharmacoinvasive strategy, the in-hospital mortality rate was 5.8%. The Global Registry of Acute Coronary Events score, left ventricular ejection fraction, and myocardial blush were independent predictors of mortality in this high-risk group of acute coronary syndrome patients. .

Predictors of in-hospital mortality in patients with ST-segment elevation myocardial infarction undergoing pharmacoinvasive treatment.

OBJECTIVES: To identify predictors of in-hospital mortality in patients with acute myocardial infarction undergoing pharmacoinvasive treatment. METHODS: This was an observational, prospective study that included 398 patients admitted to a tertiary center for percutaneous coronary intervention within 3 to 24 hours after thrombolysis with tenecteplase. ClinicalTrials.gov: NCT01791764 RESULTS: The overall in-hospital mortality rate was 5.8%. Compared with patients who survived, patients who died were more likely to be older, have higher rates of diabetes and chronic renal failure, have a lower left ventricular ejection fraction, and demonstrate more evidence of heart failure (Killip class III or IV). Patients who died had significantly lower rates of successful thrombolysis (39% vs. 68%; p = 0.005) and final myocardial blush grade 3 (13.0% vs. 61.9%; p<0.0001). Based on the multivariate analysis, the Global Registry of Acute Coronary Events score (odds ratio 1.05, 95% confidence interval (CI) 1.02-1.09; p = 0.001), left ventricular ejection fraction (odds ratio 0.9, 95% CI 0.89-0.97; p = 0.001), and final myocardial blush grade of 0-2 (odds ratio 8.85, 95% CI 1.34-58.57; p = 0.02) were independent predictors of mortality. CONCLUSIONS: In this prospective study that evaluated patients with ST-segment elevation myocardial infarction treated by a pharmacoinvasive strategy, the in-hospital mortality rate was 5.8%. The Global Registry of Acute Coronary Events score, left ventricular ejection fraction, and myocardial blush were independent predictors of mortality in this high-risk group of acute coronary syndrome patients.

Incidencia y causa de R. N. de bajo peso a termino, en el Hospital Dr. Luis E. Aybar, mayo 1989 a junio 1990 / Incidence and cause de low weight at birth newborn infants at Hospital Dr. Luis E. Aybar, from May 1989 to June 1990

De un total de 5,335 nacimientos en el período señalado, 492 fueron a termino y de bajo peso para un 9.2 por ciento . Este resultado es similar a otros estudios realizados en el pais, y pone de manifiesto la gravedad del problema del retardo de crecimiento intrauterino en la R. D. Tabaquismo, anemia e infecciones agudas en las madres, fueron las patologías más importantes asociadas a el bajo peso en los R. N. en este trabajo