La experiencia clínica con tigeciclina: Una breve revisión / Clinical experience with tygecicline: A brief review

The available clinical experience with tigecycline is analyzed under the perspective of a systematic review of the hterature, related to the already approved indications reported in the recent hterature. The safety profile is checked in the above mentioned clinical trials. The available information allows supporting tigecycline efficiency in the managing of complicated skin and soft tissues infections, complicated intrabdominales infections and in community acquired pneumonias.

Se analiza, bajo la perspectiva de una revisión sistemática de la literatura médica, la experiencia clínica con tigeciclina, en las indicaciones ya aprobadas por las entidades reguladoras reportadas en la literatura reciente. Se revisa el perfil de seguridad y tolerabilidad en dichos ensayos clínicos. La información disponible permite avalar su eficacia en el manejo de infecciones de piel y tejidos blandos complicadas, infecciones intra-abdominales complicadas y neumonías adquiridas en la comunidad.

Tigeciclina versus vancomycin más aztreonam en el tratamiento de infecciones complicadas de piel y tejidos blandos: Experiencia en Latinoamérica / Tigecycline as effective as vancomycin plus aztreonam in the treatment of complicated skin and skin structure infections: Experience in Latin America

BACKGROUND: Treating complicated skin and skin structure infections (cSSSIs) can be challenging. Tigecycline was compared to vancomycin/aztreonam in patients with cSSSIs in a multinational trial; this article reports on the Latin American (LA) population. METHODS: Patients were randomly assigned to receive tigecycline or vancomycin/ aztreonam. Primary endpoint was clinical cure rate at test-of-cure (TOC). Several secondary endpoints and safety were also assessed. RESULTS: A subtotal of 167 LA patients from the multinational trial (N = 573) received ≥ 1 dose of study drug. At TOC, cure rates were similar between tigecycline and vancomycin/aztreonam in the clinically evaluable population.) Noninferiority of tigecycline could not be demonstrated (insufficient sample sizes). Tigecycline-treated patients had higher incidences of nausea, vomiting, anorexia; vancomycin/aztreonam-treated patients had higher incidences of pruritus and rash. CONCLUSIONS: Efficacy results in the LA population were consistent with the multinational study suggesting that tigecycline is noninferior to vancomycin/aztreonam in treating patients with cSSSI.

INTRODUCCIÓN: El tratamiento de infecciones complicadas de piel y tejidos blandos (ICPTB) puede representar un desafío. Se comparó la eficacia de tigeciclina versus vancomicina/aztreonam en pacientes con ICPTB en un estudio multicéntrico; este artículo se refiere a la experiencia en Latinoamérica (LA). MÉTODO: Se asignaron, en forma randomizada, los pacientes a dos grupos de tratamiento: tigeciclina o vancomicina/aztreonam. La meta a evaluar (outcome) primaria fue la curación clínica, denominada test de curación (TC). Se establecieron, además, metas secundarias y la evaluación de seguridad del fármaco. RESULTADOS: Un subtotal de 167 pacientes procedentes de LA, de un estudio multinacional que incluyó 573 pacientes, recibieron ≥ 1 dosis del fármaco en estudio. Al TC, los porcentajes de curación fueron similares entre tigeciclina y vanco-micina/aztreonam en los pacientes clínicamente evaluables). La no inferioridad de tigeciclina no pudo ser demostrada (tamaño de muestra insuficiente). Los pacientes tratados con tigeciclina tuvieron mayor incidencia de náuseas, vómitos y anorexia; los pacientes que recibieron vancomicina/aztreonam tuvieron mayor incidencia de prurito y rash. CONCLUSIONES: Los resultados de eficacia en LA fueron consistentes con el estudio multinacional sugiriendo que tigeciclina no es inferior a vancomicina/aztreonam en el tratamiento de pacientes con ICPTB.

Cutaneous infection with Mycobacterium fortuitum: an unusual presentation.

Cutaneous infection with rapidly growing mycobacteria is uncommon and its diagnosis can be missed unless there is strong clinical suspicion coupled with microbiological confirmation. We report a case of localized recurrent soft tissue swelling of the foot by Mycobacterium fortuitum in a healthy adult male. The case is being reported for its uncommon clinical presentation and the associated etiological agent. The patient recovered completely following therapy with amikacin and clarithromycin.

Necrotizing skin and soft-tissue infections associated with septicemia: 7 cases report and review.

The authors report seven cases of necrotizing skin and soft-tissue infections, with clinical presenting as hemorrhagic bullae, gangrenous cellulitis or necrotizing fasciitis, in association with septicemia, between January 2003 and January 2007 in Hat Yai Hospital. Six were male and the majority of the lesions, six cases, occurred in the lower extremities. The average age of the patients was 50.0 +/- 11.019 years old. All patients presented with watery diarrhea, severe abdominal pain, high fever and sepsis. The skin lesions were begun with erythema, tender and swelling with formation of hemorrhagic bullae, gangrene and necrosis within 24-48 hours. Three of them were caused by Streptococcus spp., another three by Halophilic Vibrios, and only one by Aeromonas hydrophila. Furthermore, the literatures related with clinical manifestations of necrotizing skin and soft-tissue infections, etiologic pathogens, histological finding, management in setting of sepsis, comorbid conditions, complications and patients' outcome were reviewed.

Risk factors in neonatal anaerobic infections

Anaerobic bacteria are well known causes of sepsis in adults but there are few studies regarding their role in neonatal sepsis. In an attempt to define the incidence of neonatal anaerobic infections a prospective study was performed during one year period. A total number of 400 neonates under sepsis study were entered this investigation. Anaerobic as well as aerobic cultures were sent. The patients were subjected to comparison in two groups: anaerobic culture positive and anaerobic culture negative and this comparison were analyzed statistically. There were 7 neonates with positive anaerobic culture and 35 neonates with positive aerobic culture. A significant statistical relationship was found between anaerobic infections and abdominal distention and pneumonia. It is recommended for those neonates with abdominal distention and pneumonia refractory to antibiotic treatment to be started on antibiotics with anaerobic coverage

Tuberculosis presenting as osteolytic soft tissue swellings of skull in HIV positive patient: a case report.

We present a clinical case report of a 40-year old HIV positive male patient presenting with fever, cough with expectoration and osteolytic, cystic, multiple soft tissue swellings of skull (aspirate showing AFB). The various clinical possibilities are discussed along with interpretation of subsequent investigations.

Nocardiosis in patients of chronic idiopathic thrombocytopenic purpura on steroids.

We present two cases of chronic idiopathic thrombocytopenic purpura (ITP) on prolonged steroid therapy who developed subcutaneous and brain abscesses due to Nocardia asteroides. The special diagnostic and therapeutic challenges encountered in the patients because of severe thrombocytopenia are being highlighted.

Bone infection

Osteomyelitis, or bone infection, affects all age groups and develops from various sources including haematogenously from distant infection foci, from external sources such as post-operative or post-traumatic wound infections and from adjoining soft tissue infections. Staphylococcus aureus, Streptococcus pyogenes and Haemophilus influenzae are the most common pathogens of haematogenous osteomyelitis. Aerobic and facultative gram-negative bacteria have emerged as significant pathogens in some types of osteomyelitis while anaerobic bacteria are increasingly recognized as potential pathogens in non-haematogenous osteomyelitis. The emergence of antibiotic resistance is of increasing concern, although improvements in radiologic imaging, antibiotic treatment and heightened awareness have led to earlier detection such that long-term sequelae and morbidity are now primarily due to delays in diagnosis and inadequate treatment

Infecciones cervicofaciales / Infections of the head and neck

Las infecciones cervicofaciales son motivos de consulta frecuente en las unidades de emergencia. Generalmente son de fácil diagnóstico y resolución, sin embargo, ocasionalmente pueden ser graves e incluso mortales si es que no se realiza un diagnóstico oportuno o si se tratan tardíamente. Pueden evolucionar a una infección cervicofacial profunda transformándose en un cuadro de extrema gravedad. En nuestro medio, el origen más frecuente de esta patología es odontogénico. En este artículo se revisa el tema de las infecciones cervicofaciales profundas, con especial énfasis en la anatomía de la región, la etiopatogenia de la enfermedad, sus complicaciones y el tratamiento

Síndrome de RS3PE

La sinovitis simétrica seronegativa remitente con edema blando (Síndorme R S3 P E por las iniciales en ingles) constituye una forma diferente de artritis que se observa en personas de edad, generalmente mayores de 60 años y se caracteriza por tener pronóstico excelente a pesar de iniciarse en forma aguda e incapacitante en la mayoría de los casos. Se presenta el resumen de dos historias que reunen los criterios clínicos establecidos para esta entidad.