A companion dog from Milan province (northern Italy), presenting with frequent and violent sneezing, underwent rhinoscopy, laryngoscopy, and tracheoscopy procedures. During rhinoscopy, a dipteran larva was isolated from the dog and identified as first instar larval stage of O. ovis by morphological features. Reports of O. ovis in domestic carnivores are sporadic and nevertheless this infestion should be considered as a possible differential diagnosis of rhinitis in domestic carnivores living in contaminated areas by the fly as consequence of the presence of sheep and goats. This report described a case of autochthonous infestion in a dog from an area where O. ovis was not historically present but it could be affected by a possible expansion of the fly as a consequence of climate change. This is the first record of Oestrus ovis infestion in a dog in Italy and, at the same time, the most northerly finding of larvae of sheep bot fly in the country.
Previous studies of antibiotic prophylaxis have shown that treatment for 24 hours has been beneficial for head and neck surgery and that longer periods of antibiotic therapy have not improved results. Metronidazole (Flagyl), unlike other antibiotics tested, has been shown to be effective in an experimental abscess, even if treatment is begun up to 120 hours after administration of inoculum. This article presents a prospective, randomized, multifactorial study comparing a brief vs. a prolonged duration of metronidazole and cefazolin prophylaxis in 50 consecutive patients with a head and neck cancer undergoing operation. Patients receiving 2 days vs. 7 or more days of antibiotic prophylaxis were compared. Statistical analysis of data demonstrated a striking reduction in severity of wound complications and a reduced incidence of wound infections in the group treated with 7 or more days of antibiotic prophylaxis.
Bismuth subgallate (BSG) is a heavy metal compound which is effective in lowering the incidence of hemorrhage after adenotonsillectomy and has been demonstrated to activate Factor XII. In a minority of children, the paste has been suctioned from the cuffless oral endotracheal tube after adenotonsillectomy. No pulmonary sequelae have been noted in these patients. To assess the effect of BSG aspiration, 75 rats were divided into groups receiving either intratracheal BSG or saline. Early and late parenchymal effects were documented at 5 and 30 days following administration. Although there were no differences in the general well-being, activity level, or weight in these rats, acute pneumonia followed by a histiocytic, foreign-body response was noted in a significant number of rats in the BSG group. Although no clinical pulmonary sequelae of BSG use have been noted in our patients, this information should alert clinicians to the risks of BSG use in the pulmonary-compromised patient, and encourage them to either employ all methods of preventing aspiration in such patients when using BSG, or to use another hemostatic modality for the utmost safety.
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