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Biomedical subjects

B J Bailey

Publications and source records attributed to B J Bailey.

At least 127 records · Page 7Linked to original sources
PubMed1983

Laser arytenoidectomy for bilateral vocal cord paralysis.

The CO2 surgical laser was found to be a useful tool for the performance of endoscopic arytenoidectomy for bilateral vocal cord paralysis. The dog was found to be a less-than-perfect experimental model for human bilateral abductor vocal cord paralysis. Documentation by measurements of arterial blood gases and direct in vivo measurements of airway resistance following bilateral recurrent laryngeal nerve section and endoscopic arytenoidectomy was attempted.

Airway Resistance↗
PubMed1983

Epiglottitis and laryngotracheobronchitis.

Epiglottis and laryngotracheobronchitis are potentially life-threatening infections in the pediatric population. Unlike epiglottitis, laryngotracheobronchitis is very common. While both diseases may present with stridor and signs of respiratory obstruction, it is important to distinguish between them because the management strategies differ. Laryngotracheobronchitis usually responds to humidification. Epiglottitis requires an artificial airway and intensive antibiotics. The use of steroids remains controversial.

Bronchitis↗
PubMed1980

Otolaryngology.

Explore the source record for details and available documents.

Audiometry↗
PubMed1980

Attenuation of sound due to bio-encapsulants in an electronic laryngeal prosthesis.

Following total laryngectomy, a person is without voice communication. An electronic laryngeal prosthesis, fully implantable in the neck, would be a desirable means of supplying artificial voice. Such a device must provide a powerful acoustic signal of the correct fundamental frequency for males and females and be rich in harmonic energy. Sound energy must be available to permit a listener to pick up intelligible speech. Such a device places severe demands on any bio-encapsulant: these include provision for an 18 mil displacement of a diaphragm moving at 100 to 200 Hz, excellent fatigue characteristics, hydrolytic and thermal stability, and minimum permeation for water and ionic solutions. This paper describes the application of a polyvinylidene chloride, a segmented copolyether polyurethane, a silicone rubber, and a semi-rigid epoxy--by solvent cast methods--to such a prosthesis. The ability of these materials to pass the sound energy with minimal attenuation was evaluated. Results indicated that the polyurethane coating provided the best compromise between minimum water penetration, maximum flexibility at the implant site, and minimum sound attenuation.

Biocompatible Materials↗
PubMed1978

Maxillofacial injury.

This chapter has emphasized the relative infrequency of severe skeletal maxillofacial injuries in children. When they do occur, it is extremely important that they be approached by a team of physicians, each of whom is competent to manage the injury and complications related to his specialty. Particular attention must be given to the issues of general facial bone growth as well as future dental development. All operative procedures must be designed to avoid further injury to unerupted teeth, and the traditional methods of immobilization must be modified in order to avoid the avulsion of deciduous teeth.

Child↗
PubMed1975

Olfactory neuroblastoma. Management and prognosis.

Olfactory neuroblastoma is an uncommon malignant tumor originating in the olfactory epithelium in the roof of the nose. It usually produces nasal obstruction and secondary sinus disease and is often mistaken by the physician for a nasal polyp. Olfactory neuroblastoma has been observed to cause death by distant metastasis or by invasion through the cribriform plate and secondary meningitis in most instances, and is generally associated with a low cure rate. During the past eight years, we have treated three patients with olfactory neuroblastoma by a combination of extensive local surgery using the lateral rhinotomy approach with ethmoidectomy and medial partial maxillectomy, combined with either preoperative or postoperative irradiation therapy. From a review of the literature we have tried to draw meaningful conclusions regarding treatment.

Adult↗
PubMed1975

On estimating the frequency of a recessive gene in a random mating population.

The maximum likelihood estimator of the frequency of a recessive gene in a random mating population is simply the square root of the proportion of recessive individuals in a random sample. However, its asymptotic variance, i.e. the inverse of Fisher's information, has an unexpected functional form, and its use may lead to incorrect inferences. An explanation for this is sought by deriving an expansion for the exact variance of the estimator. Further, a number of calculations reveal conditions under which the asymptotic variance provides a reasonable approximation to the exact variance. Lastly, the problem of setting confidence limits to the gene frequency is discussed, with a number of approximations being considered.

Gene Frequency↗
PubMed1975

Glottic reconstruction after hemilaryngectomy: bipedicle muscle flap laryngoplasty.

This paper presents the techniques for glottic reconstruction after partial laryngectomy using a bipedicle muscle/perichondrial flap. The use of this technique extends the scope of lesions amenable to conservation surgery and maximizes the postoperative laryngeal function in terms of satisfactory phonation, respiration, and deglutition.

Drainage↗