RESUMO
Resumen: El síndrome de choque tóxico por Streptococcus se describió por primera vez en 1978 por Todd y su equipo. Éste incluye datos de hipotensión, disoxia celular, aislamiento de Streptococcus pyogenes, así como la inclusión de dos o más de los siguientes criterios: síndrome de dificultad respiratoria aguda, insuficiencia renal, anormalidad hepática, coagulopatía y erupción cutánea con descamación. Es una enfermedad relativamente rara entre niños y adultos; representa una alta mortalidad, la cual oscila de 23 al 70%. En más de la mitad de los casos, se desconoce la causa de entrada de este patógeno al torrente sanguíneo, aunque los pacientes con alcoholismo, en los extremos de la vida, con comorbilidades (como enfermedad renal crónica, insuficiencia hepática y leucemias) y que hayan sido sometidos a esplenectomía son más susceptibles al contagio y a infecciones severas. En los pacientes que desarrollan infecciones de tejidos blandos profundos, como fascitis necrosante o infección intrauterina, el dolor severo es el síntoma inicial más frecuente.
Abstract: Streptococcal toxic shock syndrome was first described by Todd and collaborators in 1978, this syndrome includes hypotension, traces of cellular dysoxia, isolation Streptococcus pyogenes; as well as two or more of the following criteria: acute respiratory distress syndrome, renal failure, liver abnormality, coagulopathy, skin rash with necrosis flaking of soft tissues. It is a relatively rare disease among children and adults, representing a high mortality ranging from 23 to 70%. In more than half of the cases the cause of entry of this pathogen into the bloodstream is unknown, although patients with alcoholism, on the edge of death, with splenectomy, with comorbidities (chronic kidney disease, liver failure, leukemia) are more susceptible to infection, to acquire severe infections and shock. Cutaneous infections usually are followed by minor skin irritations (insect bites), 20% of the cases experience a flu-like syndrome (fever, chills, myalgia and diarrhea). In patients who develop deep soft tissue infections such as necrotizing fasciitis or intrauterine infection, the severe pain is the most common initial symptom of streptococcal TSS.
Resumo: A síndrome do choque tóxico estreptocócico foi descrita pela primeira vez por Todd et al em 1978, incluindo dados sobre hipotensão, disxia celular, isolamento de Streptococcus pyogenes, bem como 2 ou mais dos seguintes critérios: síndrome do desconforto respiratório agudo, insuficiência renal, anormalidade hepática, coagulopatia, erupção cutânea com descamação. É uma doença relativamente rara em crianças e adultos, representa uma alta mortalidade que varia de 23 a 70%. Em mais da metade dos casos, a causa desse patógeno na corrente sanguínea é desconhecida, embora pacientes com alcoolismo, extremos da vida, com esplenectomia e comorbidades (como doença renal crônica, insuficiência hepática, leucemia) sejam mais suscetíveis à infecção e infecções graves. Em pacientes que desenvolvem infecções profundas dos tecidos moles, como fasceíte necrozante ou infecção intra-uterina, a dor intensa é o sintoma inicial mais frequente.
RESUMO
Background: Severe infections due to Streptococcus dysgalactiae subsp. equisimilis (SDSE) have been identified in adults and may cause toxic shock syndrome, although with a low frequency. Case report: A preschool-age female patient, who started with an upper respiratory tract infection developing a gradual deterioration in the following three days, is described. She was admitted to the hospital in severe conditions, with tachypnea, tachycardia (200/min), hypotension (blood pressure 68/40 mmHg), capillary refill of 7 s, and erythematous maculopapular rash in thorax, abdomen and lower extremities. She received intensive management with an inadequate response. Furthermore, she developed multiple organ failure and died 8 h after admission. The blood culture was positive for S. dysgalactiae subsp. equisimilis. Conclusions: SDSE is a rare pathogen in children. In Mexico, cases of SDSE have not been reported probably due to an inaccurate identification. Mexican pediatricians should be alert to this situation..
Introducción: En adultos, se han identificado infecciones graves por Streptococcus dysgalactiae subsp. equisimilis (SDSE), que pueden causar el síndrome de choque tóxico causado por SDSE, aunque es de baja frecuencia. Caso clínico: Paciente de sexo femenino en edad preescolar. Comenzó con una infección del tracto respiratorio superior, y desarrolló un deterioro gradual en los siguientes tres días. Ingresó en el hospital en condiciones graves, con taquipnea, taquicardia (200/min), hipotensión (tensión arterial, TA 68/40 mmHg), llenado capilar de 7 s y erupción maculopapular eritematosa en el tórax, abdomen y extremidades inferiores. Recibió manejo intensivo, sin una buena respuesta. Posteriormente, desarrolló datos de falla orgánica múltiple y murió 8 h después de su ingreso. El hemocultivo fue positivo para S. dysgalactiae subsp. equisimilis. Conclusiones: El SDSE es un patógeno raro en los niños. En México, no se han reportado casos de SDSE probablemente debido a una identificación errónea. Los pediatras mexicanos deben estar atentos a esta situación.
Assuntos
Choque Séptico/diagnóstico , Infecções Estreptocócicas/diagnóstico , Streptococcus/isolamento & purificação , Pré-Escolar , Evolução Fatal , Feminino , Humanos , México , Insuficiência de Múltiplos Órgãos/microbiologia , Choque Séptico/microbiologia , Choque Séptico/fisiopatologia , Infecções Estreptocócicas/microbiologia , Infecções Estreptocócicas/fisiopatologiaRESUMO
INTRODUCTION: Fasciitis of the limb and toxic-shock syndrome due to Streptococcus Pyogenes infection is considered a surgical emergency. This condition may occur in previously healthy patients. It is a life-threatening condition with high morbidity rates when treatment is delayed due to poor diagnosis and non-surgical intervention. CASE REPORT: 17-year-old male patient sustained a minor ankle trauma while skating. Initials findings were a 1cm wound in relation with his left lateral malleolus and moderate swelling. About 6 h later, the patient was admitted at the emergency room with disproportionate limb pain, increased swelling, persistent fever, paleness, tachycardia, and hypotension. The patient was intubated due to his unstable hemodynamic condition and underwent fasciotomy of the limb. A vacuum-assisted closure device was used. After the first surgical procedure, patient's condition radically improved. He was extubated with good clinical prognosis. He underwent several surgical procedures in a 3-weeks lapse until the wound finally healed. CONCLUSION: Streptococcal toxic-shock syndrome and limb fasciitis have no specific early signs or symptoms. It seems that clinical dissociation (disproportionate pain together with a minor wound) should become an alarm sign to trauma surgeons. It is important to contemplate this serious condition as differential diagnosis in every patient undergoing trauma with torpid evolution. Aggressive surgical management is the gold standard treatment and should not be delayed.
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Streptococcus pyogenes, also known as group A Streptococcus (GAS), is a human pathogen that causes diverse human diseases including streptococcal toxic shock syndrome (STSS). A GAS outbreak occurred in Brasilia, Brazil, during the second half of the year 2011, causing 26 deaths. Whole genome sequencing was performed using Illumina platform. The sequences were assembled and genes were predicted for comparative analysis with emm type 1 strains: MGAS5005 and M1 GAS. Genomics comparison revealed one of the invasive strains that differ from others isolates and from emm 1 reference genomes. Also, the new invasive strain showed differences in the content of virulence factors compared to other isolated in the same outbreak. The evolution of contemporary GAS strains is strongly associated with horizontal gene transfer. This is the first genomic study of a Streptococcal emm 1 outbreak in Brazil, and revealed the rapid bacterial evolution leading to new clones. The emergence of new invasive strains can be a consequence of the injudicious use of antibiotics in Brazil during the past decades.
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BACKGROUND: Necrotizing fasciitis (NF), myositis, and streptococcal toxic shock syndrome (STSS) associated with group G ß-hemolytic streptococcus (GGS) occasionally coincide. CLINICAL CASE: We describe a case of GGS simultaneously occurring with NF, myositis, arthritis, and STSS in an 83-year-old woman with sequelae of cerebrovascular disease, hospitalized after two days of fever and with a painful swollen left foot. She was hypotensive, her foot had purplish discoloration, which showed blisters spreading to the lower third of the leg, and no crepitus was present. Fluid, vasopressive support, tigecyclin, and clindamycin were used. Debrided tissue and fluid aspirated from the knee joint revealed Gram-positive cocci. The patient developed renal and respiratory failure on the fifth day, requiring support. She underwent amputation above the knee of the left leg, after which her condition improved. She was discharged one month later. CONCLUSION: GGS can cause life-threatening infections such as NF, myositis, and/or STSS. GGS usually afflicts aging patients with comorbid states, and occasionally healthy subjects.
Introducción: ocasionalmente concurren la fascitis necrotizante (FN), con miositis, y síndrome de choque tóxico post-estreptocócico (SSTE) asociados con infección por estreptococo ß-hemolítico del grupo G (EGG). Caso clínico: presentamos un caso de infección en el que concurren simultáneamente FN, miositis, artritis y SSTE en una mujer de 83 años con secuelas de enfermedad cerebrovascular, hospitalizada tras dos días de fiebre y dolor, así como hinchazón del pie izquierdo. Se encontraba hipotensa y el pie mostraba coloración púrpura con flictenas que se extendían hacia el tercio inferior de la pierna; no había crepitación a la presión digital. Se empleó hidratación parenteral, vasopresores, tigeciclina y clindamicina. Tanto el tejido desbridado como el líquido aspirado de la articulación de la rodilla revelaron cocos gram positivos. Al quinto día la paciente desarrolló falla renal y respiratoria que requirieron de apoyo. La paciente fue sometida a amputación supracondílea de la pierna izquierda; después de eso, su condición mejoró. Un mes después fue dada de alta. Conclusiones: el EGG puede causar infecciones potencialmente mortales, como FN, miositis, y/o SSTE. El EGG por lo general afecta a pacientes ancianos con estados comórbidos y ocasionalmente a sujetos sanos.