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1.
Rev. argent. microbiol ; 43(3): 195-197, jun.-set. 2011.
Artículo en Español | LILACS | ID: lil-634693

RESUMEN

El objetivo del presente informe es describir un caso de queratopatía cristalina causada por microorganismos pertenecientes al grupo Streptococcus mitis en una paciente que concurrió a la consulta oftalmológica por molestias en su ojo derecho. Al examen oftalmológico presentó un punto de sutura interrumpida de nylon 10-0 sin tensión y con secreciones mucosas adheridas. El punto flojo fue retirado bajo normas de asepsia. Se indicó colirio de moxifloxacina al 0,5 %; el ojo tuvo una evolución adecuada, con una correcta epitelización. Sin embargo, luego de 15 días desarrolló un infiltrado blanquecino arboriforme. Se tomó una muestra en el quirófano, enhebrando el trayecto intraestromal de la sutura retirada con sutura de vicryl 7-0. Se indicaron colirios de vancomicina con 50 mg/ml. El infiltrado se mantuvo estable durante 45 días, luego se incrementó el tamaño y se produjo necrosis tisular con peligro de perforación corneal. Se realizó un recubrimiento conjuntival bipediculado. La paciente evolucionó favorablemente y luego de la retracción espontánea del recubrimiento, se observó leucoma cicatrizal y neovasos corneales.


Crystalline keratopathy: an infrequent corneal infection produced by the Streptococcus mitis group. The objective of this report is to describe a case of crystalline keratopathy caused by the Streptococcus mitis group corresponding to a patient who attended hospital for discomfort in his right eye. The ophthalmological examination showed an interrupted stitch of 10-0 nylon suture without tension and with attached mucus secretions. The loose suture was removed under aseptic conditions. Moxifloxacin 0.5 % eye drops were topically indicated. The treated eye successfully epithelialized and evolved favorably. However, after 15 days, a white tree-shaped infiltrate developed. A corneal sample was taken in the operating room, threading the intrastromal path of the removed stitch with a 7-0 vicryl suture. Vancomycin 50 mg/ml drops were indicated. The infiltrate, which was stable for 45 days, later increased its size and tissue necrosis occurred with danger of corneal perforation. A bipedicle conjunctival flap was performed in the affected corneal area, which evolved favorably. After spontaneous conjunctival flap retraction, only corneal scarring and neovascularization outside the visual axis were observed.


Asunto(s)
Femenino , Humanos , Persona de Mediana Edad , Queratoplastia Penetrante , Queratitis/microbiología , Infecciones Estreptocócicas/microbiología , Streptococcus mitis/aislamiento & purificación , Infección de la Herida Quirúrgica/microbiología , Suturas/efectos adversos , Antibacterianos/uso terapéutico , Terapia Combinada , Conjuntiva/cirugía , Contaminación de Equipos , Queratitis/diagnóstico , Queratitis/tratamiento farmacológico , Queratitis/cirugía , Colgajos Quirúrgicos , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/tratamiento farmacológico , Infecciones Estreptocócicas/cirugía , Streptococcus mitis/efectos de los fármacos , Infección de la Herida Quirúrgica/diagnóstico , Suturas/microbiología , Vancomicina/uso terapéutico
2.
Artículo en Inglés | IMSEAR | ID: sea-139763

RESUMEN

Aim: To study and compare the microbial flora of dental plaque after the use of a self-contaminated toothbrush and that of a single-use toothbrush. Materials and Methods: The study group included 40 young volunteers from Yenepoya Dental College, who were free from any systemic or oral disease. In these subjects, plaque samples were collected after 1 month use of a self-contaminated toothbrush. Each subject was given a set of 30 new toothbrushes and a toothpaste tube and instructed to use one toothbrush everyday and discard it after use. The plaque samples were collected on a weekly interval and cultured on Mitis Salivarius agar. The colonies were identified and speciated and their count was recorded. Results: Streptococcus mitis, S. mutans, S. sanguis, S. milleri and Candida were recovered from the samples. A highly significant decrease in their numbers was found after the use of a single-use toothbrush (P value 0.001). Conclusions : As a contaminated toothbrush can reintroduce microorganisms into the oral cavity, it may be a sound practice to change the toothbrush as frequently as possible.


Asunto(s)
Adolescente , Adulto , Candida/aislamiento & purificación , Recuento de Colonia Microbiana , Placa Dental/microbiología , Femenino , Humanos , Masculino , Streptococcus/aislamiento & purificación , Streptococcus milleri (Grupo)/aislamiento & purificación , Streptococcus mitis/aislamiento & purificación , Streptococcus mutans/aislamiento & purificación , Streptococcus sanguis/aislamiento & purificación , Cepillado Dental/instrumentación , Adulto Joven
3.
Southeast Asian J Trop Med Public Health ; 2008 Nov; 39(6): 1088-91
Artículo en Inglés | IMSEAR | ID: sea-33909

RESUMEN

There is a paucity of data regarding the treatment of endocarditis caused by penicillin-resistant viridans group streptococci (PR-VGS). We report a 16-year-old girl who had native-valve endocarditis due to PR-VGS which was identified as Streptococcus mitis. She also had unusual reactions to vancomycin. Eighteen hours after initiation of 50 mg/kg/day vancomycin, she developed a maculopapular rash, then at 48 hours she developed an intermittent high fever and a progressive decrease in peripheral leukocytes and platelets. She developed hypotension on Day 8. Her serum C-reactive protein and procalcitonin levels were high. All reactions improved after vancomycin was discontinued and oral prednisolone was started. This unusual combination of reactions to vancomycin was likely caused by immune and nonimmune mechanisms. Her endocarditis was successfully treated with cefotaxime 200 mg/kg/ day for 4 weeks.


Asunto(s)
Adolescente , Antibacterianos/efectos adversos , Cefotaxima/uso terapéutico , Endocarditis Bacteriana/tratamiento farmacológico , Femenino , Glucocorticoides/uso terapéutico , Humanos , Resistencia a las Penicilinas , Prednisolona/uso terapéutico , Infecciones Estreptocócicas/tratamiento farmacológico , Streptococcus mitis/aislamiento & purificación , Vancomicina/efectos adversos
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