Biomedical subjects

A V Lewis

Publications and source records attributed to A V Lewis.

3 recordsLinked to original sources

PubMed2001

Improved immunoturbidimetric assay for cystatin C.

An immunoturbidimetric assay for cystatin C was optimized with respect to assay imprecision. After investigating the optimum pH, polyethylene glycol concentration and specimen volume, two modifications were introduced: an increase in specimen volume to 25 microL; and an extension of the pre-incubation period to 240 s. These modifications produced an assay with between-batch imprecision (coefficient of variation, n = 10 or 11) ranging from 3-9% at 0.72 mg/L to 1.3% at 5.29 mg/L. The assay was susceptible to interference from lipaemia and haemolysis but not bilirubinaemia in both the original and modified protocol. Extending the pre-incubation to 240 s improved tolerance to common interferences and retained assay applicability in the routine clinical setting.

Acid-Base Equilibrium↗

PubMed1994

Appointment access: planning to benchmark a complex issue.

BACKGROUND: Kaiser Permanente-Southern California Region carried out an external benchmarking project to improve appointment access. This article provides practical guidelines for planning a benchmark project around a complex issue such as appointment access. METHOD: Before conducting external site visits, team members determined the goals of the project, defined internal processes, and identified 16 key elements of access (or those factors important to member satisfaction with appointment access). Once a questionnaire was finalized, external benchmark partners were identified and on-site visits conducted. CONCLUSION: On the basis of the on-site visits, team members identified innovative and best practices for each of the 16 key elements of access. Based on these recommendations, some improvements were made across the Southern California region, such as the elimination of provisional booking. Reports of the results have also been sent to Kaiser Permanente medical centers in the region and across the country. Each medical center is encouraged to use these results to internally improve its own appointment access.

Appointments and Schedules↗

PubMed1990

Encopresis: behavioral parameters associated with children who fail medical management.

The present study examined behavioral parameters such as parent management of encopresis and parental coping styles (active, cognitive, and avoidance) as predictors of success with medical management of encopresis. The results suggest that parents use a variety of management strategies and treatment success cannot be predicted using these variables. However, in line with previous research the presence of child behavior problems appeared to be a potential predictor variable.

Adolescent↗