[Sensibility and specificity of ultrasonographic study in patients with rotator cuff injuries repaired with surgery]. / Cirugía por síndrome del manguito rotador. Utilidad del ultrasonido.

BACKGROUND: painful shoulder syndrome is a pathology that in some cases requires surgical treatment. The objective was to measure the sensibility and predictability of ultrasonographic study in patients with rotator cuff injuries treated with open surgery. METHODS: thirty-two patients with confirmed rotator cuff injury (either by US and/or arthrography) were surgically intervened through opened surgery technique. Sensibility and specificity of ultrasonographic study were measured and also functional results. RESULTS: functional results after open surgery were as follows; excellent in twenty five, good in five and not satisfactory in two patients. Ultrasound sensitivity was of 90 % and its specificity was 81.81 % with a predictive positive value of 94.73 and a predictive negative value of 90.17 %. CONCLUSIONS: the shoulder function recuperation after open surgery was satisfactory in most patients, allowing them going back to the performance of their activities.

[Intrarenal arterial doppler ultrasonography in cirrhotic patients with ascites, with and without hepatorenal syndrome]. / Ecotomografía Doppler arterial intrarrenal en pacientes cirróticos con ascitis, con y sin síndrome hepatorrenal.

BACKGROUND: The pathophysiological hallmark of the hepatorenal syndrome (HRS) is renal vasoconstriction. Doppler ultrasonography can be used to assess the vascular resistance in small renal intraparenchymal vessels through analysis of the Doppler waveform by a parameter termed Resistive Index (RI). We postulated that the RI could be important for the diagnosis and prognosis of HRS. AIMS: To assess the RI in cirrhotic patients with ascites, with and without HRS. PATIENTS AND METHODS: We studied 48 cirrhotics with ascites, of whom 12 were with and 36 without HRS and other 23 were normal subjects. We measured the intrarenal arterial RI (Resistive index = Peak systolic velocity - Minimum diastolic velocity/Peak systolic velocity) with color Doppler ultrasonography after visualization of interlobular or arcuate arteries. It was considered abnormal when higher than 0.70. RESULTS: The RI values, mean and SD) were: normal subjects: 0.58 +/- 0.05, cirrhotics with ascites: 0.65 +/- 0.05 and cirrhotics with ascites and HRS: 0.78 +/- 0.11. Patients with HRS had significantly higher values than those without HRS (p < 0.001). The Relative Risk of developing the HRS in patients with a RI > or = 0.70 were 3.32 (CI 95% = 1.79-6.2) CONCLUSIONS: The RI was useful in patients with cirrhosis and ascites for the prognosis of HRS and could suggest diagnosis of HRS with values of 0.78 or higher, if other clinical conditions that produce renal vasoconstriction are excluded.

Efecto analgésico del meloxicam y piroxicam oral en lumbalgia crónica / The analgesic effect of orally administered meloxicam and piroxicam in the management of chronic low back pain

Se comparó el efecto analgésico del meloxicam y el piroxicam oral en lumbalgia crónica, para lo cual fueron integrados dos grupos de 25 pacientes cada uno, elegidos aleatoriamente de la consulta externa de Ortopedia. El grupo A recibió 7.5 mg de meloxicam oral cada 12 horas, durante cinco días; el grupo B, 20 mg de piroxicam cada 12 horas por el mismo periodo. Se midió el dolor antes y después del tratamiento por la escala visual análoga (EVA). Se utilizó c2 para el análisis estadístico. El grupo A mostró elevación del umbral del dolor (p < 0.0001) y menos efectos colaterales gastrointestinales.

Diseño, contruccion y puesta en marcha de un dosificador continuo para Exxal industrias

El presente trabajo planteado a EXXAL Industrias pretende diseñar, construir y poner en marcha un dosificador continuo, para la obtencion de un producto, con un buen homogeneizado y de calidad, para este proposito se requiere la construccion de un equipo mezclador al que estara adjunto un dosificador con estos dos equipos que se encuentran concatenados una de la otra se dara una solucion tecnica a todos los problemas que representa el mezclado solido-solido (sal, nutrientes y aditivos quimicos), EXXAL Industrias es una empresa dedicada a la comercializacion de Sal yodada y Fluorada, pretende establecer con la obtencion de los datos y parametros del prototipo, nos permitan utilizarlos para un escalamiento del equipo mexclador para una produccion de Tm/h.