No abstract

A infestação do tecido subcutâneo, mucosas ou cavidades corporais dos seres humanos por larvas de dípteros (Cochliomya macellaria) define um quadro clínico de miíase. Em virtude de ser uma doença que afeta a mucosa ou o tecido subcutâneo, o canal auditivo pode ser uma região para o desenvolvimento da miíase, caracterizando um caso de miíase otológica, condição considerada uma urgência/emergência otorrinolaringológica em virtude de sua morbidade e desconforto intenso ao paciente. Mesmo com o avanço nos conhecimentos sobre miíase nos últimos anos, ainda não há protocolos claramente definidos para tratar essa condição. Uma opção de tratamento envolve a remoção mecânica e/ou o tratamento farmacológico com iodofórmio e ivermectina. O presente estudo objetivou descrever um caso de miíase otológica e o tratamento realizado em nosso serviço frente ao caso clínico.

The synthesis and characterization of superparamagnetic iron(iii) oxide nanowires confined within double-walled carbon nanotubes by capillary filling with a melted precursor (iron iodide) followed by thermal treatment is reported for the first time.

Vestibular Shwannomas are responsible for 80-90% of the cerebelar-pontine angle tumors and their incidence is of 0.8 to 20.5% of all tumors. Unilateral and progressive hearing loss is the most frequent and premature symptom, and tinnitus is the second most common complaint. Only 5% of the patients have normal audiograms. In this case the patient complained of ipsilateral facial numbness and weak blink, posterior pinna hypoesthesia (Hitzelberger +), tear reduction and positive Romberg test. He also had mouth twisting but no other involvement of other cranial nerves. Hearing acuity was normal.

The preparation of highly anisotropic one-dimensional (1D) structures confined into carbon nanotubes (CNTs) in general is a key objective in CNTs research. In this work, the capillary effect was used to fill double wall carbon nanotubes with iron. The samples are characterized by Mössbauer and Raman spectroscopy, transmission electron microscopy, scanning area electron diffraction, and magnetization. In order to investigate their structural stability and compare it with that of single wall carbon nanotubes (SWNTs), elucidating the differences induced by the inner-outer tube interaction, unpolarized Raman spectra of tangential modes of double wall carbon nanotubes (DWNTs) filled with 1D nanocrystallin α-Fe excited with 514 nm were studied at room temperature and elevated pressure. Up to 16 GPa we find a pressure coefficient for the internal tube of 4.3 cm −1 GPa −1 and for the external tube of 5.5 cm −1 GPa −1 . In addition, the tangential band of the external and internal tubes broadens and decreases in amplitude. All findings lead to the conclusion that the outer tube acts as a protection shield for the inner tubes (at least up 16 GPa). Structural phase transitions were not observed in this range of pressure.

A Síndrome de Kartagener é causada por uma doença autossômica recessiva rara, que apresenta uma tríade composta por pansinusite crônica, bronquiectasia e situs inversus com dextrocardia. A incidência desta desordem genética é estimada em 1/25.000. Nosso objetivo é, neste trabalho, aduzir dados novos àqueles que pesquisam o assunto, para que estejam atentos, acompanhando os pacientes e esperando o aparecimento eventual desta malformação. Foram realizadas tomografias computadorizadas do tórax, abdome e crânio, além da tomografia computadorizada de alta resolução do tórax, audiometria, imitanciometria e vídeo-naso-fibroscopia.

Di fferent methods used to evaluate the movements of the face have many degrees of subjectivity and reliability. The authors discuss the ease of using these methods in clinical practice or their accuracy in scientific research. Aim:To obtain the standard for normal facial muscles movements using an objective method -the Vicon system. Materials and Methods:Light reflective markers were placed at points of interest on the face of 12 normal subjects. The movements were captured by cameras that sent the images to a computer. The points' displacements were measured between rest and maximum muscle contraction; and we calculated the means and the standard deviations (SD) were calculated.Results: When smiling, the variation of the oral commissures was between 6.45 and 12.11 mm, mean of 9.28 mm and SD od 2.83; for lifting the eyebrow, it is between 6.0 and 13.08 mm, mean of 10.57 mm and SD of 2.51; for eyelids movement there was a variation of 6.89 and 11.29 mm, with a mean value of 9.09 mm and SD of 2.20; for the movement of wrinkling the forehead, the results showed a variation of 4.16 and 10.85 mm, with a mean value of 7.56 and SD of 3.29. Conclusion:The authors obtained normal patterns for facial muscle contraction. Braz J Otorhinolaryngol. 2012;78(2):41-51. ORIGINAL ARTICLE

The authors concluded that patients with neurological disorders have either wave suppression or enlarged latency periods in relation to normal subjects.