Evaluación de los efectos del LED en el tejido dérmico de ratones / The effect of application of red LED on the dermis of rats

Diodos Emisores de la Luz- Light Emitting Diodes (LED) son fuentes de luz que están siendo introducidos en los tratamientos del envejecimiento. El objetivo del estudio fue evaluar los efectos del LED rojo en la dermis de ratones wistar. Se trata de un estudio experimental controlado y randomizado, fueron utilizados 20 ratones wistar divididos en cinco grupos. Los grupos fueron: G1 en donde se aplicó 10 sesiones de diez minutos de fototerapia por LED. El G2 con 20 sesiones de 10minutos, el G3 con 10 sesiones de 20 minutos, el G4 con 20 sesiones de 20 minutos y el G5 fue el grupo control. Después de las aplicaciones se recolectó el material biológico de la zona, siendo realizado el análisis histológico de las áreas que recibieron las aplicaciones, sometiéndolas a las coloraciones de HE, tricómico de Masson y Verhoeef. Fue observada la presencia de micro vasos dérmicos con resultados significativos entre el G2 y el G5. Con relación a la presencia de mastocitos hubo resultados significativos entre el G1 y el G3. El análisis de las fibras elásticas presentó resultados significativos en los grupos G1, G2, G3, G4 en comparación al grupo control (G5). La evaluación de los efectos del LED en las fibras colágenos, los grupos tratados comparados al grupo control no presentaron ninguna diferencia significativa.

The Light-Emitting Diodes Light Emitting Diodes (LED) are a source of light wich are being introduced into the treatment of aging process. This study evaluate the effect of application of red LED on the dermis of Wistar rats. Twenty Wistar rats were used in this randomized controlled experimental study. Those rats were divided randomly into five groups. The G1 group underwent ten sessions of phototherapy by LED lasting ten minutes each. The G-2, 20 sessions of 10 minutes, the G-3, 20 minutes, the fourth group, 20 sessions of 20 minutes and the G-5 group was the control group. After the application, the biological material was collected and the histological analysis of the areas that suffered application were done, being subjected to HE staining, and Masson trichrome & Verhoeff. It was observed the presence of dermal microvascular, with significant results among G2 and G5 groups. Regarding the presence of mast cells, significant results were observed among G1 and G3 groups, however, that was not the case with the G5. By analyzing the elastic fibers, significant results were observed among G1, G2, G3, G4 groups, but the same results weren’t observed in the fifth group. Regarding the assessment of the effects of LED on the collagen fibers, the treated groups, when compared to the control group, showed no significant difference.

Parálisis facial de bell recurrente: nuestra experiencia / Recurrent bell's palsy: our experience

La parálisis facial recurrente se describe raramente en la literatura. Presentamos un estudio comparativo de la parálisis facial idiopática en sus formas de presentación única (PFIU) y recurrente (PFIR). Asimismo comparamos entre las formas recurrentes las que son recurrentes ipsilaterales (PFRA) con las recurrentes contralaterales (PFRR), observando que las parálisis de presentación única se comportan de forma similar a las formas de parálisis recurrentes contralaterales (AU)

Recurrent facial palsy is noted infrequently in the literature. We present a comparative study of recurrent Bell's palsy (RBP) with regard to non-recurrent Bell's palsy (NRBP). Afterwards we compare among RBP cases those of ipsilateral recurrence (RRBP) to those of contralateral one (ARBP). We constate that non-recurrent Bell'palsy formes behave similarly to the contralateral recurrent forms (AU)

[Antibiotic prophylaxis in oncologic pharyngolaryngeal surgery: ceftriaxone versus clindamycin and gentamycin]. / Profilaxis antibiótica en cirugía oncológica faringolaríngea: ceftriaxona versus clindamicina + gentamicina.

There are many papers comparing two antibiotic protocols for the profilaxis of head and neck infections after laryngeal surgery. We present one prospective and randomised study in 60 patients comparing the efficacy of two protocols. The comparison was between ceftriaxone versus the association of clindamicyn and gentamicyn. In our database we included the risk factors for infection, the surgical approach, the duration of surgery and the patient characteristics. We observed an incidence of 28% of infection, with a 23.3% in the clindamicyn + gentamicyn group and a 33.3% in the ceftriaxone group. The differences between the two groups were not statistically significant. In this study we observed a small difference between the amount of alcohol comsuption, the effectiveness of the surgical drainage, the surgical approach and the presence of wound infection. The difference was not statistical significant due to the small group of patients. The profilaxis was adequate for the total laryngectomy and cordectomy group, with a higher incidence of wound infection in patients treated with a supraglottic laryngectomy.

Profilaxis antibiótica en cirugía oncológica faringolaríngea: ceftriaxona versus clindamicina + gentamicina / Antibiotic profilaxis in oncologic pharyngolaryngeal surgery: ceftriaxone vs. clindamicyn and gentamicyn

Existen diversos estudios comparativos en la profilaxis de cirugía de cabeza y cuello, cuyo fin es el de disminuir la tasa de infección postoperatoria. Presentamos un estudio prospectivo y randomizado con 60 pacientes comparando dos pautas de profilaxis antibiótica en pacientes sometidos a cirugía oncológica faringolaríngea, donde valoramos la eficacia de dichos tratamientos. Todos los pacientes fueron sometidos a cirugía por carcinoma faringolaríngeo, estudiando las características del paciente, factores de riesgo de infección y duración de la cirugía. Se compara la eficacia de la clindamicina asociada con gentamicina frente a ceftriaxona empleándolos en forma de pauta corta perioperatoria. La tasa de infección global ha sido del 28 por ciento, siendo de 23,3 por ciento para el grupo de clindamicina + gentamicina y de 33,3 por ciento en el grupo de la ceftriaxona, diferencias no estadísticamente significativas. En ese estudio inicial hemos observado cierta relación entre el alcoholismo, el funcionamiento del redón y el tipo de cirugía, con la aparición de infección postoperatoria de la herida quirúrgica, aunque las diferencias no han sido estadísticamente significativas debido probablemente al número pequeño de la muestra. Se ha obtenido buen resultado de la profilaxis para cordectomía y laringectomía total, siendo la tasa de infección superior en la laringectomía parcial supraglótica (AU)

There are many papers comparing two antibiotic protocols for the profilaxis of head and neck infections after laryngeal surgery. We present one prospective and randomised study in 60 patients comparing the efficacy of two protocols. The comparison was between ceftriaxone versus the association of clindamicyn and gentamicyn. In our database we included the risk factors for infection, the surgical approach, the duration of surgery and the patient characteristics. We observed an incidence of 28% of infection, with a 23.3% in the clindamicyn + gentamicyn group and a 33.3% in the ceftriaxone group. The differences between the two groups were not statistically significant. In this study we observed a small difference between the amount of alcohol comsuption, the effectiveness of the surgical drainage, the surgical approach and the presence of wound infection. The difference was not statistical significant due to the small group of patients. The profilaxis was adequate for the total laryngectomy and cordectomy group, with a higher incidence of wound infection in patients treated with a supraglottic laryngectomy (AU)

[Recurrent Bell's facial palsy: our experience]. / Parálisis facial de Bell recurrente: nuestra experiencia.

Recurrent facial palsy is noted infrequently in the literature. We present a comparative study of recurrent Bell's palsy (RBP) with regard to non-recurrent Bell's palsy (NRBP). Afterwards we compare among RBP cases those of ipsilateral recurrence (RRBP) to those of contralateral one (ARBP). We constate that non-recurrent Bell'palsy formes behave similarly to the contralateral recurrent forms.

[Second primary tumors in patients with laryngeal neoplasms]. / Segundos tumores primarios en pacientes con nèoplasia laríngea.

A cohort epidemiologic study of second primary tumours appeared in patients diagnosed of laryngeal neoplasms, between years 1988 and 1990, and a follow-up term of 5 years, is presented. An statistical analysis of several data to define a possible high risk group for developing primary tumours was performed for all patients.