20 research outputs found
Tratamento cirúrgico de pneumonia necrosante: análise de quatro casos Surgical treatment of necrotizing pneumonia: analysis of four cases
A pneumonia necrosante é uma patologia grave que surge como complicação rara de pneumonia lobar. Quatro crianças na faixa etária entre dez e 28 meses foram hospitalizadas com pneumonia bacteriana aguda, evoluindo com toxemia, derrame pleural e insuficiência respiratória, respondendo insatisfatoriamente a antibioticoterapia e drenagem pleural. Todos os pacientes foram submetidos a tratamento cirúrgico para descorticação pulmonar e ressecção de tecido pulmonar necrosado. Complicações como fístulas broncopleurais ocorreram em dois pacientes, havendo óbito em um dos casos. Os autores concluem que a ressecção pulmonar de emergência é indicada quando a necrose pulmonar é diagnosticada em pacientes septicêmicos ou com fístula broncopleural de alto débito, visando a melhora do prognóstico dessas crianças, mesmo cientes de que o índice de morbimortalidade nesses casos é alto.<br>Necrotizing pneumonia is a serious complication of lobar pneumonia. Four children aged between ten months and three years were admitted with acute bacteremic pneumonia and developed sepsis, pleural effusion, and respiratory distress despite adequate antibiotic treatment and chest tube drainage. Decortication and pulmonary resection were performed in all of them. The observed complications were bronchopleural fistula and one death. The emergency pulmonary resection is indicated when pulmonary necrosis is associated to sepsis and massive bronchopleural fistula. In such circumstances, morbidity and mortality are higher than in other conditions
The Lichen Connections of Black Fungi
Many black meristematic fungi persist on
rock surfaces\u2014hostile and exposed habitats where
high doses of radiation and periods of desiccation
alternate with rain and temperature extremes. To cope
with these extremes, rock-inhabiting black fungi show
phenotypic plasticity and produce melanin as cell wall
pigments. The rather slow growth rate seems to be an
additional prerequisite to oligotrophic conditions. At
least some of these fungi can undergo facultative,
lichen-like associations with photoautotrophs. Certain
genera presenting different lifestyles are phylogenetic
related among the superclass Dothideomyceta. In this
paper, we focus on the genus Lichenothelia, which
includes border-line lichens, that is, associations of
melanised fungi with algae without forming proper
lichen thalli. We provide a first phylogenetic hypothesis
to show that Lichenothelia belongs to the superclass
Dothideomyceta. Further, culture experiments
revealed the presence of co-occurring fungi in Lichenothelia
thalli. These fungi are related to plant
pathogenic fungi (Mycosphaerellaceae) and to other
rock-inhabiting lineages (Teratosphaeriaceae). The
Lichenothelia thallus-forming fungi represent therefore
consortia of different black fungal strains. Our
results suggest a common link between rock-inhabiting
meristematic and lichen-forming lifestyles of
ascomycetous fungi