The morphology, chemical, mechanical and corrosion characterization of starting materials, and Al and Al-Al 2 O 3 /Al coatings obtained by Cold Gas Spray and applied on common steel substrate were performed. An Al coating on a ground or grit blasted substrate, and Al-Al 2 O 3 /Al coating on ground mild carbon steel have been compared. The electrochemical results showed that the coatings protect the substrate for immersion times >2000 h due to the dense structure obtained by Al and Al-Al 2 O 3 . The electrolyte reaches the substrate only after 2000 h of immersion without wetting completely the coating/substrate interface. Coatings have resisted 3000 h of salt fog test.

IntroductionInverse psoriasis is a rare form of psoriasis that affects between 3% and 7% of the patients with psoriasis. It can comprise genital skin folds as part of genital psoriasis, and it is one of the most commonly seen dermatoses of this area. There are few evidence-based studies about the treatment of intertriginous psoriasis involving genital skin folds.Case PresentationThe authors present a 42-year-old female patient with erythematous plaques in the vulva, groin, and perianal region. The patient had previously received a broad range of topical and systemic therapies that had to be discontinued due to ineffectiveness or side effects. She was treated with 100 mg dapsone daily for 10 months, showing a significant improvement of her cutaneous and mucous lesions. Complete clearance of psoriatic lesions was observed after 4 weeks of treatment. She has remained in remission for up to 2 years, using only topical therapy with tacrolimus 0.1% and calcipotriol.DiscussionGenital psoriasis is a skin disease that causes great discomfort. It is important to include examination of the genital region and to adopt this conduct in daily clinical practice. Research in this field is still poor, making no discrimination between flexural and genital psoriasis, and is based on case series and expert opinion; therefore, empirical recommendations for the treatment of genital psoriasis remain. Dapsone has been shown to be an effective and convenient alternative for the treatment of inverse psoriasis in genital skin folds, which can provide effective control of the disease. Further studies are required to determine the efficacy and safety of current therapies, and to decide whether dapsone therapy should be considered in the management of this form of psoriasis when topical and other systemic agents are not effective.

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Resumen Introducción: Las cardiopatías congénitas son las anomalías congénitas más comunes en recién nacidos con una prevalencia de 1%. El cateterismo cardíaco diagnóstico y terapéutico ha revolucionado el tratamiento de estas enfermedades, aunque puede acompañarse de complicaciones. Objetivo: Describir la incidencia y el tipo de complicaciones vinculadas con el cateterismo cardíaco pediátrico en un centro de referencia para cardiopatías congénitas. Método: Estudio observacional retrospectivo, con intención analítica a partir de registros de cateterismos cardíacos realizados a pacientes con cardiopatías congénitas y adquiridas. Resultados: Se incluyeron 2,688 registros durante nueve años consecutivos. El 53.9% correspondió a hombres, 21.3% con edades de dos a cinco años y 20.3% de seis meses a dos años. El 63.5% de los procedimientos fue electivo. La prevalencia de complicaciones en las primeras 24 horas posteriores al cateterismo fue de 6.7% (4.2% menores y 2.4% mayores). En el 0.8% de los procedimientos sobrevino la muerte temprana. Los factores relacionados con las complicaciones fueron: edad al momento del cateterismo <28 días (OR, 2.18; IC 95%, 1.28-3.70), saturación de oxígeno antes del cateterismo <79% (OR, 2.15; IC 95%, 1.02-4.53), uso de inotrópicos antes del cateterismo (OR, 3.00; IC 95%, 1.68-5.33). Las variables incluidas en el modelo explican el 38% de la varianza de las complicaciones posteriores al cateterismo cardíaco en pacientes menores de 18 años. Conclusiones: En este estudio, el cateterismo cardíaco se vinculó con complicaciones mayores y menores, incluida la muerte. Los factores adjuntos fueron edad menor de 28 días, menor saturación de oxígeno y uso de inotrópicos antes del cateterismo.