Association of Blood Type With Postsurgical Mucosal Bleeding in Pediatric Patients Undergoing Tonsillectomy With or Without Adenoidectomy.

Importance: Blood type (BT) O has been identified as a risk factor for bleeding complications, while non-O BTs may increase risk for thromboembolic events. Limited data are available in children undergoing tonsillectomy with or without adenoidectomy.

Objective: To determine whether BT O is associated with hemorrhage after tonsillectomy with or without adenoidectomy.

Otolaryngology Service Usage in Children With Cleft Palate.

Objectives: To determine the usage of otolaryngology services by children with cleft palate at a pediatric tertiary care facility.

Design: Retrospective case series.

Setting: Specialty clinic at a pediatric tertiary care hospital.

Perioperative Hearing Evaluations for Patients Undergoing Tympanostomy Tube Placement.

Importance: Obtaining hearing thresholds is an important step in the evaluation of a child with otitis media because decreased hearing in the presence of a chronic middle ear effusion factors into the decision to place tympanostomy tubes (TTs).

Objective: To provide evidence regarding appropriate use of perioperative hearing evaluations in conjunction with TTs.

Design, Setting, And Participants: Case series with medical record review of all patients aged 0 to 24 years who received TTs at a tertiary pediatric care facility from June 1, 2010, through June 1, 2011.

Vestibular evoked myogenic potential testing for the diagnosis of conductive hearing loss: survey of pediatric otolaryngologists' knowledge and beliefs.

Objectives: To assess physicians' knowledge and beliefs regarding vestibular evoked myogenic potential (VEMP) testing in children.

Methods: A survey was delivered via email in html format to 1069 members of the American Academy of Otolaryngology--Head and Neck Surgery who identified as pediatric otolaryngologists. Study data were collected and managed using the Research Electronic Data Capture (REDCap) tools.

Clinical uses of cervical vestibular-evoked myogenic potential testing in pediatric patients.

To demonstrate the feasibility and clinical significance of cervical vestibular-evoked myogenic potential (cVEMP) test in pediatric patients.Retrospective review study was conducted in a pediatric tertiary care facility. A total of 278 patients were identified with adequate data, including medical notes, results of cVEMP, and imaging studies.

Crural attachment to promontory case report: implications for stapes development.

Understanding of the embryologic origin of the stapes remains controversial. Theories diverge upon whether the entirety of the stapes arises from a single source versus the footplate and suprastructure arising from distinct sources. A 12-year-old boy with left-sided conductive hearing loss had computed tomography of the temporal bone, revealing an inferiorly displaced left stapes, and a nonspecific density in the left Prussak's space.

Persistent conductive or mixed hearing loss after the placement of tympanostomy tubes.

Objective: Described is a case series of clinical findings in children with persistent conductive or mixed hearing loss following tympanostomy tube placement for serous otitis media.

Study Design: Retrospective chart review.

Setting: Tertiary pediatric hospital.

Sarcoidosis of the pinnas in a 17-year-old.

A 17-year-old girl presented with persistent swelling and erythema of the midportion of the helix of the pinnas, with no associated history of pain, fever, or hearing loss. The area was erythematous, with crusting and a minimal amount of pus. Her otologic examination was otherwise normal.

The FAO/IAEA DGIS Coordinated research programmes on trypanosomiasis diagnosis and animal production in Africa.

During the period 1987-1992, Professor Dick Zwart played a key role in guiding the work of two African research networks established by the Joint FAO/IAEA Division and supported financially by the Netherlands Directorate General of Development Co-operation. These networks brought together staff from African institutes involved in the diagnosis and control of trypanosomiasis and in animal production, with scientists from International Agricultural Research Centres and other advanced research institutions in the Netherlands and elsewhere. Through this approach, the value of recently-developed immunoassay methods was assessed for diagnosing trypanosomiasis and monitoring control programmes, and similar methods were used to monitor animal productivity and ways of improving this on small-holder farms.

An ELISA for the diagnosis of Babesia ovis infection utilizing a synthetic, Babesia bovis-derived antigen.

The development of an enzyme-linked immunosorbent assay (ELISA) for the detection of Babesia ovis antibodies is described. In an initial study, a crude Babesia bovis antigen and a synthetic B. bovis-derived antigen (designated 11C5) were used to screen 46 B.

The pathogenesis of experimental Schistosoma bovis infections in Sudanese sheep and goats.

The pathogenic effects of experimental Schistosoma bovis infection in Sudanese sheep and goats were investigated by a variety of clinical, parasitological, physiological and histopathological techniques; uninfected animals of each species were used as controls. Infected animals of both species lost or failed to gain weight and developed a haemorrhagic diarrhoea, inappetence, marked anaemia, hypoalbuminaemia, hyperglobulinaemia, hyperproteinaemia and eosinophilia. These changes first became noticeable around the time of onset of oviposition and their severity was generally related to faecal egg counts.

Erythrokinetics and albumin metabolism in primary experimental Schistosoma bovis infections in Zebu calves.

Red cell kinetics and albumin metabolism were studied in calves infected with either 100 or 200 Schistosoma bovis cercariae per kg body weight, by the use of 59Fe-labelled transferrin, 51Cr-labelled erythrocytes and 125I-labelled albumin; a third group of worm-free animals acted as controls. The anaemia which developed in the infected calves was shown to be due basically to an accelerated rate of red cell loss from the circulation, and became evident around the seventh week of infection, increased in severity during the following two months, and subsequently subsided. In view of its close similarity to the pattern of faecal egg excretion, it was concluded that haemorrhage into the intestine caused by the exit of eggs was the principal aetiological factor: haemolysis was excluded by the absence of both splenomegaly and hyperferraemia .

Observations on cattle schistosomiasis in the Sudan, a study in comparative medicine. III. Field testing of an irradiated Schistosoma bovis vaccine.

Previous work has shown that cattle can acquire a strong resistance to Schistosoma bovis infection following repeated natural exposure. Partial resistance to a laboratory challenge with S. bovis has also been demonstrated in calves after immunization with an irradiated schistosomular or cercarial vaccine.

Observations on cattle schistosomiasis in the Sudan, a study in comparative medicine. II. Experimental demonstration of naturally acquired resistance to Schistosoma bovis.

Epizootiological observations on Schistosoma bovis in cattle at Kosti, Sudan, showed a significant fall in age-specific prevalence and intensity with age, based on fecal egg count. To test the possibility that this is due to acquired resistance, Kosti cattle and a control group of cattle of similiar breed and age from a nonenzootic area were experimentally challenged with 70,000 S. bovis cercariae.

Observations on cattle schistosomiasis in the Sudan, a study in comparative medicine. I. Epizootiological observations on Schistosoma bovis in the White Nile Province.

A 2-year epizootiological study was carried out on Schistosoma bovis in cattle in an enzootic area of the Sudan. The prevalence of infection, as judged by the Pitchford fecal egg counting technique, was very high, approaching 90% in 1.5-year-old animals.

Schistosoma bovis in calves: the development and clinical pathology of primary infections.

The clinico-pathological effects of Schistosoma bovis were monitored in zebu calves for a year after exposure to 100 or 200 cercariae/kg body weight and were related to the number and reproductive activities of the parasites present. The disease was characterised by diarrhoea, weight loss or poor weight gain, anaemia, serum protein changes and eosinophilia. These changes were broadly related to the level of infection and were most prominent during the two months following patency when faecal egg counts were highest.

Pathophysiological changes associated with Parascaris equorum infection in the foal.

The mechanisms involved in the pathophysiological disturbances associated with the presence of mature Parascaris equorum in the small intestine were investigated with radioisotopic techniques. The results suggested that, compared with worm-free controls, infected foals had a reduction in gut motility, an increase in the body solids ratio, a lowering of the body pool of albumin and a decreased ability to incorporate dietary methionine into plasma protein.

Bovine trypanosomiasis: the red cell kinetics of ndama and Zebu cattle infected with Trypanosoma congolense.

The responses of susceptible Ndama and Zebu cattle to needle challenge with Trypanosoma congolense were followed using parasitological, haematological and radio-isotopic methods and compared with those of corresponding uninfected animals. In both breeds, infection became patent at the same time but peak parasitaemias were significantly lower, were attained later and were of short duration in the Ndama. All infected animals became anaemic, the severity of which correlated with the level and duration of parasitaemia.

The pathophysiology of ovine fascioliasis: studies on the feed intake and digestibility, body weight and nitrogen balance of sheep given rations of hay or hay plus a pelleted supplement.

The effect of Fasciola hepatica on feed intake and digestibility, body weight and nitrogen balance was measured during the course of experimental infections in sheep given a diet of hay or hay with 'concentrate'. A system of paired feeding was used to allow comparisons between infected and control animals. After the sixth week the appetites and body weights of all infected animals declined but both features were more prominent in the group given the diet of hay alone.

The blood volumes and erythrokinetics of Ndama and Zebu cattle experimentally infected with Trypanosoma brucei.

The responses of susceptible Ndama and Zebu cattle to experimental infection with Trypanosoma brucei were compared using haematological, parasitological and radioisotopic methods. Animals of both breeds became anaemic, but this was more severe in the Zebu cattle, one of which died. Although the prepatent period was the same in animals of both breeds, the levels of the first and subsequent peaks of parasitaemia were higher in the Zebu.