Síndrome de la piel escaldada estafilocócica en un paciente pediátrico con dermatitis atópica / Staphylococcal scalded skin syndrome in a pediatric patient with atopic dermatitis

El síndrome de la escaldadura estafilocócica es una entidad dermatológica poco frecuente que, en fases iniciales, puede ser confundida con una reagudización de un brote de dermatitis atópica. Se presenta el caso de un niño de 8 años, con antecedentes de dermatitis atópica y alergia al huevo, que acudió al Servicio de Urgencias por lesiones eritematoampollosas en la piel. La sintomatología comenzó como un eritema en áreas de flexuras, que asociaba conjuntivitis y eritema palpebral bilateral. A las 24 horas, apareció un eritema generalizado con ampollas flácidas de predominio en áreas flexurales, acompañado de hiperqueratosis y xerosis perioral. Ante la sospecha clínica de síndrome de escaldadura estafilocócica, se inició el tratamiento empírico con cloxacilina, con respuesta favorable. Con este caso, se destaca la importancia de realizar un correcto diagnóstico diferencial de las lesiones cutáneas de los pacientes con dermatitis atópica, con el objetivo de aplicar el tratamiento más adecuado.

The staphylococcal scalded skin syndrome is a rare dermatological entity that in early stages may be confused with a flare-up of a rush of atopic dermatitis. We present the case of an 8-year-old boy with a history of atopic dermatitis and egg allergy that went to the Emergency Department for erythematous-bullous lesions on the skin. Symptoms began as an erythema in areas of flexures, which associated conjunctivitis and bilateral eyelid erythema. After 24 hours, a generalized erythema appeared with flaccid blisters predominating in flexural areas, accompanied by hyperkeratosis and perioral xerosis. Due to the clinical suspicion of staphylococcal scalded skin syndrome, empirical treatment with cloxacillin with favorable response was initiated. This case highlights the importance of making a correct differential diagnosis of skin lesions of patients with atopic dermatitis in order to apply the most appropriate treatment.

Uso de antimicrobiano nanoparticulado para o tratamento da mastite subclínica de ovelhas de corte no período seco / Use of nanoparticulated antimicrobians to treat subclinical mastitis of ewes during the dry period

A inflamação da glândula mamária é uma das principais causas de prejuízo na ovinocultura. Este estudo teve como objetivo investigar as taxas de cura do tratamento da mastite subclínica após infusão intramamária de princípio ativo antimicrobiano no momento da secagem, em formulações convencional e nanoparticulada. Os rebanhos estavam localizados em São Carlos, São Paulo, Brasil. Analisou-se um total de 584 glândulas mamárias de 307 ovelhas de aptidão para produção de carne. Triagem prévia dos casos subclínicos de mastite foi efetuada por meio do California Mastitis Test (CMT) e/ou da contagem de células somáticas (CCS). Análises microbiológicas foram realizadas para confirmação da etiologia infecciosa. As glândulas mamárias com mastite subclínica foram distribuídas em três grupos: G1 (Controle; glândulas mamárias que não receberam tratamento antimicrobiano); G2 (glândulas mamárias em que foi administrado 100 mg de cloxacilina benzatina em estrutura convencional) e G3 (glândulas mamárias em que foi administrado 50 mg de cloxacilina benzatina em estrutura nanoencapsulada). O tratamento aplicado ao G3 mostrou-se mais eficiente (P=0,047) na cura de glândulas mamárias com mastite subclínica. O uso da cloxacilina nanoencapsulada no momento da secagem de ovelhas de corte auxilia no controle da mastite subclínica infecciosa e reduz os prejuízos consequentes.(AU)

Inflammation of the mammary gland is one of the main causes of losses in sheep-rearing. This study aimed to investigate the cure rates from treating subclinical mastitis after intramammary infusion of active antimicrobial agents as conventional formulations or as nanoparticles, at the time when the ewes are being dried off. A total of 584 mammary glands in 307 ewes in meat-producing herds located in São Carlos, São Paulo, Brazil, were analyzed. Prescreening of subclinical mastitis cases was done using the California mastitis test (CMT) and/or the somatic cell count (SCC). Microbiological analyses were performed to confirm the infectious etiology. The mammary glands with subclinical mastitis were distributed into three groups: G1 (control; mammary glands that did not receive any antimicrobial treatment); G2 (mammary glands to which 100mg of benzathine cloxacillin in conventional form were administered); and G3 (mammary glands to which 50mg of benzathine cloxacillin in nanoparticulate form were administered). The treatment applied to G3 was more efficient (P=0.047) in curing mammary glands with subclinical mastitis. Use of cloxacillin nanoparticles at the time when the ewes are being dried off helps to control infectious subclinical mastitis and reduces consequential losses among meat-producing herds.(AU)

Reposicionando la cloxacilina como antibioticoterapia empírica inicial de la sepsis tardía neonatal / Reinstating cloxacilin for empiric antibiotic in late-onset sepsis

Vancomycin has been used for more than 50 years in neonatal intensive care units (NICUs) as the therapy of choice for late-onset sepsis, mainly because Coagulase negative Staphylococci (CoNS) are common and mostly resistant to oxacyllin despitelow virulence and unusual association with fulminant sepsis. CUs due to several factors including its high pharmacokinetic variability, difficulty in reaching therapeutic plasmatic drug concentrations and progressively increasing minimum inhibitory concentrations (MIC). The increase of CoNS with higher MICs as well as the rise of infections caused by resistant gram-negative bacilli and candida should move to reconsider Vancomycin as first line treatment. Infections in neonates have a different behavior than in other populations and we consoder of utmost importance to consider the use of oxacyllin as first line antimicrobial therapy for late-onset sepsis.

Vancomicina se utiliza hace más de 50 años en unidades de cuidados intensivos neonatales (UCIN) como terapia de elección en sospecha de sepsis neonatal tardía; su principal indicación se fundamenta en que Staphylococcus coagulasa negativa (SCN) es el principal microorganismo que ocasiona sepsis tardía y éste es habitualmente resistente a cloxacilina; sin embargo, su virulencia es baja y la sepsis fulminante es inusual. Lamentablemente la prescripción de vancomicina se ha convertido en un grave problema en las UCIN, debido a diversas razones incluyendo: alta variabilidad farmacocinética del fármaco, dificultad en alcanzar concentraciones plasmáticas apropiadas y aumento de la concentración inhibitoria mínima (CIM), implicando además una mayor probabilidad de seleccionar cepas resistentes y aumento de otro tipo de infecciones ocasionadas por bacilos gramnegativos resistentes y candidiasis invasora. Considerando lo anteriormente señalado y a lo publicado en la literatura médica con respecto a las infecciones en neonatología, debido a su comportamiento clínico diferente a hospederos en otras etapas de la vida, resulta de suma importancia replantear el uso de vancomicina basado en fundamentos teóricos que avalen la seguridad de no utilizar este antimicrobiano como primera línea en sepsis neonatal tardía.

Absceso renal estafilocócico trasforunculosis cutánea / Staphylococcus renal abscess after cutaneous furunculosis

Los abscesos renales son patologías infrecuentes, pero de alta morbi-mortalidad si no son diagnosticados temprano y tratados precozmente. Su vaga e inespecífica sintomatología: dolor abdominal o lumbar, fiebre o mal estado general hacen que su diagnostico sea a veces tardío. La ecografía y/o la TAC dan el diagnóstico en el 100 por ciento de los casos lo que hace posible su tratamiento temprano. El objetivo de este artículo es poner de relieve que el absceso renal es una causa de urgencia urológica a tener presente en pacientes fundamentalmente del sexo femenino, con síntomas de dolor abdominal o fiebre sin clara focalidad urológica.MATERIAL Y MÉTODOS: Se presenta el caso de una adolescente de 16 años con antecedente reciente de forunculosis cutánea supurada en rodilla derecha, que acudió a urgencias por dolor en flanco derecho y fosa iliaca derecha de 10 días de evolución sin fiebre ni síntomas miccionales. Se nos consultó para su valoración, siendo la ecografía el método diagnóstico que se utilizó para la localización de un absceso renal derecho subcapsular de 44 mm en polo superior, y posteriormente para su drenaje percutáneo al no responder porcompleto al tratamiento antibiótico i.v. El cultivo del material purulento del drenaje percutáneo aisló un Staphyloccocus aureus no meticilin resistente. El tratamiento antibiótico i.v asociado a drenaje percutáneo seguido de cloxacilina oral a su alta, curó a la paciente. A raíz de este caso se revisan las series y revisiones sobre abscesos renales de los últimos 10 años, con un total de 179 pacientes, y las publicaciones sobre abscesos renales por Staphyloccocus aureus con tan sólo 13 casos. CONCLUSIONES: Los abscesos renales han de tenerse en cuenta entre las urgencias urológicas. Su diagnóstico y tratamiento percutáneo es mayormente radiológico, reservándose la cirugía abierta o la nefrectomía para abscesos > de 5 cm o pacientes sépticos...

Renal abscesses are infrequent pathologies, but with a high morbidity-mortality if they are not diagnosed and treated early. Its vague and unspecific symptomatology: abdominal or lumbar pain, fever or poor general state, make its diagnosis late sometimes. The ultrasound and/or TAC provide a 100 percent diagnosis of the cases where its early treatment is possible. The objective of this article is to give importance to the fact that renal abscess is a cause of an urological emergency to keep in mind in patients, particularly females with symptoms of abdominal pain or fever without a clear urological focus. MATERIAL AND METHODS: The case of a 16-year-old adolescent is presented with a recent history of festered cutaneous furunculosis on the right knee. She went to the emergency room due to pain on the right side and right illiac fosa with 10 days evolution without fever or urinary symptoms. She came to us for its evaluation, an ultrasound was used for diagnosis to locate a right subcapsular renal abscess of 44 mm on the superior pole, and later for its percutaneous drainage when it did not completely responded to I.V. antibiotic treatment. The culture of the purulent material of the percutaneous drainage isolated a resistant non-methicillin Staphyloccocus aureus. The I.V. antibiotic treatment associated to percutaneous drainage followed by oral cloxacillin upon release cured the patient. CONCLUSIONS: Renal abscesses have to be taken into account among the urological emergencies. Their diagnosis and percutaneous treatment is mainly radiological, leaving open surgery or nephrectomy for abscesses > 5cm or with septic patients...

Piomiositis en niños: Reporte de 2 casos / Pyomyositis in children: Report of two cases

Pyomyositis (PM) is an uncommon pyogenic infection of skeletal muscle and, when not properly treated, it can progress to a high-risk clinical situation with high mortality. Because it usually has a subacute presentation, diagnosis is often delayed. We present two cases of PM of the paraspinal muscles in healthy children and discuss the current state of knowledge of this disease.

La piomiositis (PM) es una infección piógena infrecuente del músculo estriado y, cuando no es tratada adecuadamente, puede evolucionar hasta una situación clínica de alto riesgo vital. Debido a su presentación usualmente subaguda, el diagnóstico es a menudo tardío. Presentamos dos casos clínicos de PM de la musculatura paraespinal en escolares sanos y se describe el estado actual del conocimiento de esta enfermedad.

Impacto do uso de droga imunomoduladora no tratamento da artrite séptica por Staphylococcus aureus / Impact of the use of immunomodulatory drugs for the treatment of septic arthritis caused by Staphylococcus aureus

Staphylococcus aureus é considerado o agente etiológico mais importante da artrite séptica. Neste contexto, o objetivo geral deste trabalho foi investigar o potencial artritogênico de cepas padrão de S. aureus produtoras de superantígenos (SAgs) e testar a eficácia terapêutica da associação entre antibiótico e imunomodulador neste modelo. Camundongos C57BL/6 machos foram inicialmente infectados pelo plexo retro-orbital com as diferentes cepas. O desenvolvimento de artrite e sua gravidade foram acompanhados por 14 dias, através das seguintes determinações: peso corporal, escore clínico e incidência de artrite, alterações histopatológicas, número de unidades formadoras de colônias, expressão local de citocinas e subpopulação células por PCR em tempo real e produção de citocinas por células esplênicas. Os resultados foram organizados em 3 manuscritos. No primeiro, comparamos a capacidade artritogênica de 5 cepas produtoras de SAgs. Constatamos que as cepas ATCC 19095 SEC+, N315 ST5 TSST-1+ e S-70 TSST-1+ determinaram artrite grave, intermediária e discreta, respectivamente. No segundo trabalho caracterizamos a artrite causada pela cepa ATCC 19095 SEC+. Este tipo de artrite se caracterizou por elevado escore clínico associado à proliferação sinovial, inflamação intensa, formação de “pannus”, destruição da cartilagem e erosão óssea. A análise da expressão local de fatores de transcrição indicou expansão acentuada de células Th1 e Th17 nas lesões. No último manuscrito, avaliamos o efeito terapêutico da combinação do antibiótico bactericida cloxacilina com o imunomodulador tacrolimus...

Staphylococcus aureus is considered the more important etiological agent of septic arthritis. In this context, the main objective of this work was to investigate the arthritogenic capacity of standard S. aureus strains, producer of superantigens (SAgs). We also tested the therapeutic effectiveness of an association antibiotic and an immunomodulatory drug in this model. C57BL/6 male mice were initially infected by retro-orbital plexus with different strains. Development and severity of arthritis were followed during 14 days, through determination of body weight, clinical score and incidence of arthritis, histopathological changes, determination of colony forming units, evaluation of local infiltration of Th subsets by real time PCR and cytokine production by spleen cells. The results were organized in three manuscripts. In the first one we compared the arthritogenic ability of 5 S. aureus strains. We found that the strains ATCC 19095 SEC+, N315 ST5 TSST-1+ and S-70 TSST-1+ determined severe, intermediate and discrete arthritis, respectively. In the second study we characterized the arthritis caused by the ATCC 19095 SEC+ strain. This type of arthritis was characterized by high clinical scores associated with synovial proliferation, intense inflammation, "pannus" formation, cartilage destruction and bone erosion. In the final manuscript we evaluated the therapeutic potential of the combination bewteen cloxacilin (bactericidal antibiotic) with tacrolimus (immunomodulator)...

Prevalence and antibiotic resistance of mastitis pathogens isolated from dairy herds transitioning to organic management

Changes in udder health and antibiotic resistance of mastitis pathogens isolated from dairies upon conversion from conventional to organic management over a 3-year period was studied. Coagulase-negative staphylococci (CNS) were the most prevalent mastitis pathogens isolated. CNS were significantly less resistant to beta-lactam antibiotics when isolated from milk after the herd transitioned to organic management. Cessation of the use of antimicrobial therapies in dairies in combination with organic management could lead to a reduction in the antimicrobial resistance of mastitis pathogens.

Histomorphometric changes in the testes and epididymis of wistar strain albino rats following fourteen days oral administration of therapeutic doses of some antibiotics / Cambios histomorfométricos en los testículos y el epidídimo de ratas cepa wistar albinas después de catorce días de administración oral de dosis terapéuticas de algunos antiobióticos

Studies on testes and epididymis tissue of rats treated orally for fourteen days with therapeutic doses of cloxacillin (6mg/100g/day), ampicillin (4mg/100/day) and tetracycline (12mg/100g/day) separately showed a significant reduction in testicular and epididimis architecture. Microscopic studies of these male reproductive organs further revealed a significant alteration in the epididymis as revealed by a significant reduction (p<0.05) in epididymal ductular diameter (EDD), and epididymal epithelial height (EEH) in treated group of animals. A significant increase (p<0.05) was however recorded in epididymal luminal diameter (ELD) in all the animals after the two and three week's recovery period allowed. This gives another insight into the toxicity activities of these antibiotics on male reproductive organs, apart from reduction in serum testosterone level, decreased sperm motility, decreased spermatozoa count and decrease in RNA and DNA content of spermatogenic cells as earlier reported.

Estudios referentes a testículos y tejido epididimario en ratas tratadas por vía oral durante catorce días, con dosis terapéuticas de cloxacilina (6mg/100g/día), ampicilina (4mg/100/día) y tetraciclina (12mg/100g/día) por separado muestran una reducción significativa en el peso testicular y epidídimario. Los estudios microscópicos de los órganos reproductores masculinos revelan además una alteración significativa en el epidídimo como se observa en la reducción del diámetro (p<0,05) de los conductos del epidídimo (EDD), y la altura del epitelio epididimal (EEH) en el grupo de los animales tratados. Sin embargo, se registró un aumento significativo (p <0,05) en el diámetro luminal del epidídimo (ELD) en todos los animales después de dos y tres semanas del período de recuperación. Esto genera otro punto de vista en relación a la toxicidad de estos antibióticos en los órganos reproductivos masculinos, además de la reducción de la concentración sérica de testosterona, disminución de la motilidad del esperma, disminución del recuento de espermatozoides y disminución en el contenido de ARN y ADN en las células de espermatogénesis como se reportó anteriormente.

Eccema herpético por virus herpes simplex tipo 2: revisión de la literatura a propósito de un caso / Eczema herpeticum caused by herpes simplex virus type 2: review of the literature about one case

Eczema herpeticum is an extensive vesicular eruption caused by cutaneous dissemination of herpes simplex virus in patients who have underlying skin conditions or epidermal barrier disruption. Herpes simplex virus type 1 (HSV 1) is the most common etiology. This is the first report in Chile of a case of eczema herpeticum caused by HSV 2 in a patient with Darier' s disease, We review the literature and emphasize the use of sensitive and specific assays as real time polimerase chain reaction, that allow to initiate timely the correct treatment.

El eccema herpético es una erupción vesicular extensa causada por la diseminación cutánea del virus herpes simplex, en pacientes con trastornos cutáneos previos o daño de la barrera epidérmica. La etiología más frecuente es virus herpes simplex tipo 1 (VHS 1), aunque se han reportado casos de virus herpes simplex tipo 2 (VHS 2). Presentamos el primer reporte en Chile de eccema herpético por VHS 2 en un paciente con enfermedad de Darier. Realizamos una revisión de la literatura médica y destacamos la importancia del uso de técnicas sensibles y específicas como la reacción de polimerasa en cadena (RPC) en tiempo real, que posibilitan el inicio precoz de la terapéutica correcta.

Infección profunda del cuello por Streptococcus grupo B en un paciente diabético: Caso clínico / Retropharyngeal phlegmon caused by a group B Streptococcus in a diabetic patient: Report of one case

We report a 47 year-old diabetic male, admitted due to metabolic decompensation, malaise, purulent pharyngeal discharge and a mass in the posterior cervical region. Blood glucose was 270 mg/dl, a nasopharyngoscopy showed a pharyngeal phlegmon and CT scan confirmed the presence of a phlegmon in the retropharyngeal region. He was treated with sodium penicillin, cloxacillin and ceftriazone and the phlegmon was drained surgically. The culture of the purulent discharge gave growth to a Group B Streptococcus. The evolution was favorable and the patient completed seven days with intravenous antimicrobials and additional seven days with oral ampicillin/sulbactam.

Tratamiento intravenoso inicial abreviado en 70 pacientes pediátricos con infecciones osteo-articulares / Short duration of initial intravenous treatment in 70 pediatric patients with osteoarticular infections

Osteoarticular infections (OAI) are infrequent in pediatrics and there is controversy on the need for prolonged use of intravenous antimicrobials. Objective: To characterize and describe evolution and complications of a regimen of 7 days initial intravenous antibiotic treatment for OAI in children, completing 4-6 weeks of total treatment. Patients and methods: In a large pediatric hospital, 70 children younger than 15 years of age were diagnosed with OAI between March 2003 and December 2004. Children received 7 days of intravenous antibiotics followed by 3 to 5 weeks of oral treatment. Results: Incidence of OAI in this hospital was 1.8:10000. Patients mean age was 6.4 ±4.4 years and 60 percent presented with septic arthritis, 36 percent osteomyelitis and 4 percent osteoarthritis. In 80 percent of cases, the infection was located in the lower extremity. Positive cultures were obtained in 59 percent predominating Staphylococcus aureus (46.5 percent). Seven patients had prolonged pain or persistantly high or increasing serum C reactive protein levels and were maintained on prolonged intravenous therapy. None of the 63 children with 7 day intravenous antimicrobials nor the 7 children with prolonged intravenous use developed a complication in the short-term follow up. Conclusions: Seven days of intravenous antibiotic for the initial phase of OAI treatment was effective in a majority of children and may be recommended.

Las infecciones osteoarticulares (IOA) son poco frecuentes en pediatría. Existe controversia acerca de la óptima duración y la vía de administración de la terapia antimicrobiana. Objetivo: Caracterizar y describir la evolución y complicaciones en niños con IOA que recibieron 7 días iniciales de terapia endovenosa, completando 4 a 6 semanas de terapia total. Pacientes y Métodos: Estudio descriptivo, que incluyó a 70 niños con diagnóstico de IOA, entre marzo de 2003 y diciembre de 2004 en un hospital pediátrico, quienes recibieron tratamiento endovenoso abreviado a 7 días, seguido de terapia oral por 3 a 5 semanas. Resultados: La incidencia de IOA fue de 1,8: 10.000 niños bajo 15 años de edad. El promedio de edad fue 6,4 ± 4,4 años. Sesenta por ciento presentaba artritis séptica, 36 por ciento osteomielitis y 4 por ciento osteoartritis. En 80 por ciento la infección se localizó en extremidades inferiores. Los cultivos fueron positivos en 59 por ciento. En 46,5 por ciento se aisló Staphylococcus aureus. Siete niños evolucionaron con dolor persistente o elevación significativa de PCR y requirieron prolongar la terapia endovenosa y/o total, sin presentar complicaciones a corto plazo. Conclusiones: Siete días de terapia antimicrobiana intravenosa parece ser efectivo y recomendable para el tratamiento, en su fase inicial, de las infecciones osteo-articulares.

Microbiology of Chronic suppurative otitis media - experience at Bahawalpur

To determine the aerobic microorganisms involved and their antibiotic sensitivity pattern in patients with chronic suppurative otitis media [CSOM] to provide a guideline for making a protocol for empirical antibiotic therapy. Descriptive study. The study was conducted from Sept 2005 to April 2007 at the department of ENT and Microbiology, Combined Military hospital Bahawalpur. A total of 178 patients with unilateral or bilateral active chronic suppurative otitis media attending the outpatient clinic were included in the study. All the patients were evaluated through detailed clinical history and clinical examination. Pus samples were collected from the discharging ear[s] and sent to microbiology section of hospital laboratory where aerobic cultures were done. Antibiotic sensitivity testing was done with standard antibiotic discs using Kirby-Bauer disk diffusion method as per National Committee for Clinical Laboratory Standards recommendations. From the clinical specimens of 178 patients enrolled in the study, microbiological culture was yielded from 130 [73%] specimens. There were 116, [89%] bacterial isolates and 14, [11%] fungi. Pseudomonas aeruginosa 58 [45%] was the most common isolate, followed by Staphylococcus aureus 52 [40%] including two isolates of Methicilliresistent Staphylococcus Aureus [MRSA]. Antibiotic sensitivities of Pseudomonas aeruginosa showed that 100% isolates were sensitive to Piperacillin/Tazobactam, where as 86% isolates were sensitive to ceftazidime and 83% to ciprofloxacin. Only 45% of Pseudomonas aeruginosa isolates were sensitive to gentamicin and 48% to amikacin. For Staphylococcus aureus [other than MRSA], 100% isolates were sensitive to cloxacillin, 80% to ciprofloxacin and 68% to gentamicin. Only 60% isolates were sensitive to chloramphenicol and 32% to cotrimoxazole. Pseudomonas aeruginosa was the most common isolate followed by Staphylococcus aureus. More than 80% of the two organisms were sensitive to quinolones. It is therefore concluded that the topical preparation of quinolones should be included in the formulary to cover the most common aerobic isolates involved in CSOM

Reacciones adversas medicamentosas mucocutáneas en pacientes hospitalizados en servicio de medicina interna / Mucocutaneous adverse reactions to drugs in hospitalized patients of internal medicine service

Las reacciones adversas medicamentosas mucocutáneas (RAMM) son una de las manifestaciones más frecuentes de reacción adversa a medicamentos. Su incidencia según datos internacionales alcanza un 2 por ciento a 3 por ciento en pacientes hospitalizados. Nosotros investigamos la incidencia de RAMM en el Servicio de Medicina Interna del Hospital Base de la ciudad de Los Ángeles. En el período junio-septiembre de 2006 se hospitalizaron 1.052 pacientes, diagnosticándose 3 casos de RAMM que representan un 0,3 por ciento. Se identificaron los fármacos atribuibles a las RAMM, correspondiendo a cloxacilina, toxoide tetánico y drogas antituberculosas; éstas se compararon posteriormente con un grupo control. Los casos identificados fueron un rash morbiliforme, una reacción inflamatoria local tipo celulitis y un rash urticariforme. La incidencia obtenida fue más baja de lo esperado, atribuyéndose a las características de atención del centro estudiado.

Mucocutaneous adverse reactions to drugs (MCRD) are one of the most frequent manifestations of adverse drug reaction. Its incidence, according to international data, reaches 2 to 3 percent in hospitalized patients. We studied the incidence of MCRD in the Internal Medicine Service of the Base Hospital, located in the city of Los Angeles, Chile. 1,052 patients were hospitalized during the June-September 2006 period, and three cases of MCRD were diagnosed, representing 0.3 percent. The drugs causing to MCRD were cloxacilin, tetanic toxoid and antituberculosis drugs; these were later compared to a control group. The identified cases were morbiliform rash, a cellulitis-type local inflammatory reaction, and urticariform rash. The obtained incidence was lower than expected, attributed to the characteristics of the studied center.

[Common bacteria, infection area and appropriate treatment in hospitalized addicts]

The use of narcotics leads to immunodeficiency and infection these patients. Hence, recognition of common germs and appropriate antibiotics is of special importance. This cross-sectional study was performed among all patients hospitalized within 2002-2005, in the ward of infectious diseases, in Alzahra hospital. First, the patients were divided into 4 groups of skin, limb, heart and lung involvement, then microbial culture was obtained and type of bacterium and effective drug. Overall, 493 patients with a mean age of 27.75 years, and a minimum of 15 years. The number of deaths was 59 [11.96], of which, more than half have been affected by infective endocarditis. The most common complication [58.6%] was related to injection site complications. The lung was second [19%] followed by cardiac involvement equivalent to 13.8%. 60% of existing scopes were on tricuspid valve. The most common bacterium, staphylococcus aureus was obtained at a rate of 82.8% from these patients, which responded mostly to cefazolin and gentamicin. The need for vancomycin was present in 2% of patients, which were all hospitalized in the last year of the study [2005], and cefepime was used in only one case. Considering that the most common bacterium was Staphylococcus aureus, with a remarkable majority of patients has given appropriate response to simple and inexpensive drugs cefazolin, gentamicin, ceftriaxone and cloxacillin which are first line of treatment against this bacterium, therefore vancomilyn should be kept for special cases

Toxic epidermal necrolysis due to Dapsone treatment in a patient with Hansen's disease: a case report

Dapsone is a sulfone antimicrobial and is used widely as an antileprotic medication. The commonly encountered cutaneous adverse drug reactions [ADR] due to dapsone are exfoliative dermatitis, toxic 'erythema, erythema multiforme, morbilliform and scarlatiniform eruptions, urticaria, erythema nodusum and toxic epidermal necrolysis [TEN]. We hereby report a case of toxic epidermal necrolysis caused due to dapsone. The causality, severity and preventability assessments were carried out. The patient was treated with systemic hydrocortisone, antibiotics and other symptomatic drugs. The reaction was severe and the patient expired on the second day of hospital admission in spite of the treatment. Since TEN is a life threatening cutaneous ADR and dapsone is a commonly used drug, this reaction needs monitoring

Experiencia en pacientes neutropénicos febriles de alto y bajo riesgo, según el índice MASCC en linfoma no Hodgkin y leucemia aguda; en el Hospital Dr. Gustavo Fricke de Viña del Mar (2002-2005) / Experience in high and low risk patients with febrile neutropenia according to MASCC index in non Hodgkin lymphoma and acute leukaemia at Hospital Dr. Gustavo Fricke of Viña del Mar (2002-2005)

La neutropenia febril constituye una de las principales complicaciones en pacientes sometidos a quimioterapias con diagnóstico de linfoma no Hodgkin y leucemias agudas. Objetivos: describir las características de pacientes con neutropenia febril, clasificándolos en alto y bajo riesgo, según la probabilidad de presentar complicaciones médicas mayores, incluyendo la muerte, según un índice de riesgo validado de la MASCC (Multinational Association for Supportive Care in Cancer Risk Index). Pacientes y métodos: revisión de fichas de pacientes con linfoma no Hodgkin y leucemias agudas que presentaron episodios de neutropenia febril. Se recolectaron 51 episodios entre enero del 2002 y enero del 2005. Se les aplicó retrospectivamente el índice de riesgo diseñado por la MASCC. Resultados: el score de la MASCC aplicado retrospectivamente identificó los pacientes de bajo riesgo (27,5 por ciento del total), no presentándose en este grupo de pacientes complicaciones y muerte. La diferencia entre pacientes de alto y bajo riesgo no fue estadísticamente significativa (p>0.05) debido a que el total de pacientes era pequeño. Se describieron otras variables de ambos grupos. La diferencia en la pesquisa de focos infecciosos en los pacientes de alto riesgo (86.5 por ciento) con respecto a los de bajo riesgo (21.4 por ciento) fue estadísticamente significativa con un p<0.001. A ningún paciente se le administró terapia antibiótica profiláctica. El éxito del primer esquema antibiótico en pacientes de alto riesgo fue de 64.8 por ciento, mientras que en los de bajo riesgo el 100 por ciento respondió al primer esquema antibiótico aplicado. Los antibióticos que se utilizaron como primer esquema eran de espectro reducido, orientado al hallazgo clínico del foco o al microorganismo aislado. El aislamiento del agente infeccioso por hemocultivos en pacientes de alto riesgo fue de un 21.05 por ciento, mientras que en los de bajo riesgo alcanzó un 28.57 por ciento, predominando en ambos gr...

Retrospective prevalence of snakebites from Hospital Kuala Lumpur (HKL) (1999-2003).

A hospital based retrospective study of the prevalence of snakebite cases at Hospital Kuala Lumpur was carried out over a five-year period from 1999 to 2003. A total of 126 snakebite cases were recorded. The highest admission for snakebites was recorded in 2001 (29 cases). The majority of cases were admitted for three days or less (79%). Most of the snakebite cases were reported in the 11-30 years age group (52%). The male:female ratio was 3:1. The majority of cases were Malaysians (80%, 101 cases). Of the non-Malaysians, Indonesians constituted the most (56%, 14 cases). Bites occurred most commonly on the lower limbs (49%), followed by upper limbs (45%) and on other parts of the body (6%). No fatal cases were detected and complications were scarce. In 60% (70 cases) the snake could not be identified. Of the four species of snakes that were identified, cobra (both suspected and confirmed) constituted the largest group (25%), followed by viper (10%), python (4%) and sea snake (1%). The most common clinical presentations were pain and swelling, 92% (116 cases). All patients were put on snakebite charts and their vital signs were monitored. Of the snakebite cases, 48% (61 cases) were treated with cloxacillin and 25% (32 cases) were given polyvalent snake antivenom.

Comparison of different laboratory methods for detection of methicillin resistant staphylococcus aureus

The aim of this study was to compare four different laboratory methods for detection of methicillin resistant Staphylococcus aureus [MRSA]. The clinical specimens including urine, blood, wound and tracheal tube aspirates were processed for isolation of S .aureus. The samples were obtained from patients admitted in Milad hospital in Tehran, Iran. 95 strains of S.aureus were tested with four different methods i.e. disk diffusion, oxacillin screen agar E-test and latex agglutination for methicillin resistantance. Of 95 tested S. aureus; E-test revealed that 51 isolates were MRSA. Oxacillin screen agar showed two false positive MRSA. The sensitivity and specificity of oxacillin screen agar method was 96% and 95% respectively. The MRSA -Screen latex agglutination showed 54[three false positive] MRSA. The sensitivity and specificity for this method was 94% and 93% respectively. Results of susceptibility testing by disk diffusion methods in comparison with other methods were conflicting. Oxacillin screen agar test is a reliable alternative for detection of MRSA in clinical laboratory where MIC detection or molecular methods are not available. Also MRSA latex agglutination kit offers an interesting new approach to early detection of MRSA