Biomedical subjects

R Glackin

Publications and source records attributed to R Glackin.

4 recordsLinked to original sources

PubMed1992

A comparison of risk factors in juvenile-onset and adult-onset recurrent respiratory papillomatosis.

The clinical triad of a firstborn delivered vaginally to a young (teenage) mother has been previously noted among juvenile onset recurrent respiratory papillomatosis (JO-RRP) patients. This study was based on a questionnaire survey of JO-RRP patients, adult onset recurrent respiratory papillomatosis (AO-RRP) patients, and juvenile and adult controls. The survey results revealed that the complete or partial triad was observed in 72% of JO-RRP patients, 36% of AO-RRP patients, 29% of juvenile controls, and 38% of adult controls. As compared with juvenile controls, JO-RRP patients were more often firstborn (P less than .05), delivered vaginally (P less than .05), and born to a teenage mother (P less than .01). Among adult participants, AO-RRP patients reported more lifetime sex partners (P less than .01) and a higher frequency of oral sex (P less than .05) than reported by adult controls. AO-RRP and JO-RRP appear to have distinguishable epidemiologic features indicating that the mode of human papillomavirus (HPV) transmission is different in these two disorders.

Adolescent↗

PubMed1987

A study of potential vestibulotoxic effects of once daily versus thrice daily administration of tobramycin.

Tobramycin 5.1 mg/kg/day was administered for 9 days to 20 healthy human volunteers to determine the potential vestibulotoxicity of once daily versus thrice daily treatment regimens. Vestibular function was tested carefully before, during, and following drug administration, using a battery of postural and caloric tests. Although subjects receiving the once daily regimen performed better on the postural tests, we feel this does not necessarily indicate an adverse effect in either group. The caloric test was the primary measure of vestibular function in this experiment, and this test appeared to demonstrate a slight adverse effect during drug administration of equal magnitude in both treatment groups. The results of this experiment indicate that there is no significant difference in the risk of adverse vestibular effects between once daily and thrice daily tobramycin administration.

Adult↗

PubMedDate not supplied

Reference values for serial vestibular testing.

This study defines the normal limits of day-to-day variation in vestibular function. A short-acting caloric test was used and nystagmus intensity was measured by means of an interactive computerized technique. Data were analyzed from 30 normal subjects tested on three successive days and from ten of these subjects who were also tested on 11 additional occasions. Individual caloric test scores generally remained between 55% and 170% of their initial value; narrower ranges resulted when scores were averaged together. There was very little habituation of caloric responses. The upper normal limits of test-retest variation in scores for right-left difference and directional preponderance of caloric responses were 24% and 22%, respectively.

Caloric Tests↗

PubMedDate not supplied

Factors contributing to variability of caloric test scores.

Data were analyzed from 30 healthy male subjects, examined on three successive days with caloric, rotatory, optokinetic, gait and posture tests. Data were also analyzed from 11 additional test sessions performed on 10 of these subjects. A short-acting caloric test was used and nystagmus intensity was measured by means of an interactive computerized technique. Large inter-individual differences were noted for all test results and these differences remained consistent as tests were repeated. Factors which may contribute to inter- and intra-subject variability of caloric test scores are identified and discussed.

Body Temperature↗