Biomedical subjects

E Hudon

Publications and source records attributed to E Hudon.

3 recordsLinked to original sources

PubMed1999

Practice guidelines for clinical prevention: do patients, physicians and experts share common ground?

BACKGROUND: Clinical practice guidelines, such as those of the Canadian Task Force on Preventive Health Care, although based on sound evidence, may conflict with the perceived needs and expectations of patients and physicians. This may jeopardize the implementation of such guidelines. This study was undertaken to explore patients' and family physicians' acceptance of the task force's recommendations and the values and criteria upon which the opinions of these 2 groups are based. METHODS: Focus groups were used to collect study data. In total, 35 physicians (in 7 groups) and 75 patient representatives (in 9 groups) participated in the focus groups. An inductive approach was used to develop coding grids and to generate themes from the transcripts of the interviews. RESULTS: Physicians expressed resistance to discontinuing the annual check-up, which they viewed as an organizational strategy to counteract the many barriers to preventive care that they encounter. They reported difficulties in explaining to their patients the recommendations of the Canadian Task Force on Preventive Health Care, which they found complex and inconsistent with popular wisdom. Both patients and physicians attributed high value to the detection of insidious diseases, even in the absence of proof of the effectiveness of such activity. INTERPRETATION: The patients and family physicians who participated in this study shared many opinions on the value of preventive activities that depart from the values used by "prevention experts" such as the Canadian Task Force on Preventive Health Care in establishing their recommendations. A better understanding of the values of patients and physicians would help guideline developers to create better targeted communication strategies to take these discrepancies into account.

Adult↗

PubMed1997

Radioimmunoassay of meterelin and pharmacokinetics after single injection and implant administration in dogs.

A sensitive and specific radioimmunoassay for a novel luteinizing-hormone-releasing-hormone (LHRH) agonist, [2-Me-D-Trp6, DesGly10]LHRH ethylamide (meterelin), was developed for documenting the pharmacokinetic parameters of this peptide following its intravenous (iv) and subcutaneous (sc) administration in dogs. The assay was also used for monitoring meterelin in plasma following its release from d,l-lactide-glycolide implants in the same species. Rabbit antisera generated against [DespyroGlu1] meterelin and conjugated to bovine serum albumin with glutaraldehyde showed high specificity, whereas crossreactivity to LHRH and its fragments and to analogs with substitutions at residues 6 and 10 was found insignificant. The assay was validated in terms of accuracy (recovery range, 94.0-105.4%), in terms of precision (intra- and interassay variations of 10.0-12.4% and 8.6-11.3%, respectively), and in terms of sensitivity (minimum detectable dose of 2.7 pg/assay). Following iv acute administration, a biexponential decline of plasma meterelin levels was observed, with distribution and elimination half-lives of 5.9 +/- 2.5 and 106 +/- 22 min, respectively. After sc acute administration, the elimination half-life was in the range of 103 to 173 min. The systemic clearance (CLT) ranged from 1.6 to 2.6 mL/min/kg, and the volume of distribution at steady state (Vdss) varied from 285 to 438 mL/kg. The elimination half-life (T1/2 beta), Vdss, and ClT were not significantly different after both routes of administration over the 1-100-microgram/kg dose range of peptide studied. Castrate levels of testosterone were attained 10 days after sc administration of the implant, lasted for up to 247 days, and were well correlated with plasma levels of meterelin.

Amino Acid Sequence↗

PubMed1985

Delays in the primary vaccination of children.

The results of a population-based survey of 170 children's vaccination records were used to calculate the cumulative distributions of the ages (in months) at which each dose of vaccine had been received. Considerable delays in the administration of measles-mumps-rubella (MMR) vaccine and of the fourth dose of diphtheria-pertussis-tetanus vaccine were observed, particularly in children vaccinated by private physicians rather than at public health clinics. The delay before MMR vaccination causes concern because of the frequency of measles in children aged 1 to 2 years, particularly those attending day-care centres, and the fragility of the herd immunity against this disease. Physicians should follow up patients who have missed appointments for MMR vaccination if a voluntary measles control program is to succeed.

Age Factors↗