ABSTRACT
Saprophytic fungi are being increasingly recognized as etiologic agents of mycoses in immunosuppressed patients. We report a case of subcutaneous infiltration by Aureobasidium pullulans, likely due to traumatic inoculation, in a neutropenic patient during chemotherapy for chronic lymphocytic leukemia. The patient was treated with amphotericin B deoxycholate but was subsequently switched to itraconazole, which improved the lesion. This case highlights the importance of considering unusual fungal infections in critically ill patients such as those who are immunosuppressed due to chemotherapy. Diagnostic techniques and effective antifungal therapy have improved the prognosis of these cases.
Subject(s)
Aged , Humans , Male , Ascomycota/isolation & purification , Febrile Neutropenia/microbiology , Leukemia, Lymphocytic, Chronic, B-Cell/microbiology , Mycoses/microbiology , Fatal OutcomeABSTRACT
OBJECTIVE: To investigate the influence of the reprocessing technique of enzymatic bath with ultrasonic cleaning and ethylene oxide sterilization on the chemical properties and morphological structure of polymeric coatings of guide wire for regular guiding catheter. METHODS: These techniques simulated the routine of guide wire reprocessing in many hemodynamic services in Brazil and other countries. Samples from three different manufacturers were verified by scanning electron microscopy and X-ray photoelectron spectroscopy. RESULTS: A single or double sterilization of the catheters with ethylene oxide was not associated with morphological or chemical changes. However, scanning electron microscopy images showed that the washing method was associated with rough morphological changes, including superficial holes and bubbles, in addition to chemical changes of external atomic layers of polymeric coating surfaces, as detected by the X-ray photoelectron spectroscopy method, which is compatible with extended chemical changes on catheter surfaces. CONCLUSION: The reprocessing of the catheters with ethylene oxide was not associated with morphological or chemical changes, and it seemed appropriate to maintain guide wire coating integrity. However, the method combining chemical cleaning with mechanical vibration resulted in rough anatomical and chemical surface deterioration, suggesting that this reprocessing method should be discouraged.
OBJETIVO: Investigar a influência das técnicas de reprocessamento de banho enzimático com limpeza ultrassônica e a esterilização com óxido de etileno nas propriedades químicas e estruturas morfológicas de revestimentos poliméricos de fios-guia usados como guias em cateteres regulares. MÉTODOS: Estas técnicas simulam a rotina de processamento de fios-guia em muitos serviços de hemodinâmica do Brasil e de outros países. Amostras de três diferentes fabricantes foram verificadas por microscopia eletrônica de varredura e espectroscopia de fotoelétrons de raios-X. RESULTADOS: Uma única ou dupla esterilização dos cateteres com óxido de etileno não foi associada a mudanças químicas ou morfológicas. Contudo, imagens de microscopia eletrônica de varredura mostraram que o método de lavagem foi associado a intensas modificações morfológicas, incluindo bolhas e buracos superficiais, assim como mudanças nas ligações químicas das camadas atômicas externas do revestimento polimérico, conforme demonstrado por resultados de espectroscopia de fotoelétrons de raios-X, compatível com extensas modificações químicas induzidas por esse processo de lavagem. CONCLUSÃO: O reprocessamento dos fios-guia de cateteres com óxido de etileno não está associado a mudanças químicas e morfológicas dos mesmos e pode ser considerado adequado para manter a integridade destes materiais. Entretanto, o método que combina lavagem química com vibração mecânica resulta em intensas deteriorações anatômicas e químicas, sugerindo que esse método de processamento deve ser desencorajado.
Subject(s)
Humans , Angioplasty/instrumentation , Cardiac Catheters , Cardiac Catheterization/instrumentation , Sterilization/methods , Disinfectants/chemistry , Equipment Reuse , Ethylene Oxide/chemistry , Microscopy, Electron, Scanning , Polymers/chemistry , Surface Properties/drug effects , Surface Properties/radiation effects , VibrationABSTRACT
We report the case of a 35-year-old homeless alcoholic and illicit drug user, with AIDS, who was admitted to the emergency unit complaining of asthenia and a weight loss of 30kg over the preceding three months. Clinical and laboratory data confirmed a diagnosis of marasmus, bacterial pneumonia, chorioretinitis caused by Toxoplasma gondii and oral Candida infection. The patient also presented loss of tongue papillae, gingival hypertrophy, perifollicular hyperkeratosis and hemorrhage, coiled, corkscrew-like hair, anemia, hypoalbuminemia, increased C-reactive protein levels and low serum vitamin C levels. The patient developed severe gastric hemorrhage, with hemodynamic instability and terminal disseminated intravascular coagulopathy.
Relatamos o caso de um paciente alcoólatra e usuário de drogas ilícitas com 35 anos de idade, morador de rua com AIDS, admitido na Unidade de Emergência referindo astenia e perda ponderal de trinta quilos nos últimos três meses. Dados clínicos e laboratoriais confirmaram o diagnóstico de marasmo, pneumonia, corioretinite por Toxoplasma gondii e candidíase oral. Apresentava ainda: língua despapilada com hipertrofia gengival, hiperqueratose e hemorragia folicular associada a pêlos tipo saca-rolhas, anemia, hipoalbuminemia, aumento dos níveis de proteína C reativa com baixos níveis séricos de vitamina C. O paciente desenvolveu hemorragia gástrica grave, com instabilidade hemodinâmica e coagulação intravascular disseminada terminal.
Subject(s)
Adult , Humans , Male , AIDS-Related Opportunistic Infections/complications , Acquired Immunodeficiency Syndrome/complications , Scurvy/complications , AIDS-Related Opportunistic Infections/diagnosis , Fatal Outcome , Scurvy/diagnosisABSTRACT
Estados de imunossupressão têm provocado mudanças na história natural da doença de Chagas com descrição de reativação da doença em pacientes com a Síndrome de Imunodeficiência Adquirida (AIDS), durante transplantes de órgãos e em quimioterapia de malignidades hematológicas. É relatado caso de reativação de doença de Chagas com meningoencefalite durante quimioterapia de linfoma não Hodgkin não relacionado a transplante de células-tronco hematopoéticas com tardia detecção de Trypanosoma cruzi em sangue e líquido cefalorraquidiano. Apesar de tratamento específico com benzonidazol, paciente morreu após oito dias. Alta suspeição clínica com abordagens diagnósticas sensíveis é fundamental para diagnóstico precoce e início de tratamento com objetivo de diminuir mortalidade.
Immunosuppression has caused changes in the natural history of Chagas' disease with reports of reactivation of the disease in acquired immune deficiency syndrome (AIDS) and organ transplant patients and during chemotherapy treatment in patients with hematological malignances. We report on a case of reactivation of Chagas' disease in a patient with meningoencephalitis during chemotherapy for non-Hodgkin's lymphoma without any relation to hematopoietic stem-cell transplantation and with late detection of Trypanosoma cruzi in blood and cerebrospinal fluid. Despite specific treatment with benznidazole, the patient died 8 days later. High clinical suspicion and sensitive diagnostic methods are fundamental for early diagnosis and initiation of treatment in order to minimize mortality.