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Biomedical subjects

W Clark

Publications and source records attributed to W Clark.

120 records · Page 7Linked to original sources

Efficacy of a telephone follow-up system in the emergency department.

Traditionally, treatment in the emergency department is noted for brief doctor-patient encounters, fragmented service, and lack of follow-up care. This atmosphere can lead to patient dissatisfaction and may contribute to the high rate of noncompliance with discharge instructions and medications. To cope with this problem, a prospective study was designed to evaluate a telephone follow-up system and its effect on patient care and satisfaction. During a 1-month period, all emergency department charts were reviewed daily, and approximately 15% were selected for recontact. These charts were selected using a detailed list of 20 criteria developed by staff emergency physicians. Calls were made by an emergency department physician, nurse, or social worker on the day following the patient's visit. Calls were assigned to staff members (physician, nurse, social worker) on the basis of preestablished criteria within the spectrum of their expertise and training. We were able to reach 81% (229/281) of the patients selected for recontact. The purpose of these calls was to question patients about changes in clinical status, reinforce discharge instructions, and identify any patient complaints about treatment. An average of 1.6 calls were made to successfully contact each patient. The calls lasted an average of 70 seconds. Of the patients contacted 42% (97/229) required further clarification of their discharge instructions. The calls resulted in direct medical intervention in the majority of patients (6/7) who stated their clinical condition had worsened. Ninety-five percent of the patients questioned (112/118) felt that the call was useful.(ABSTRACT TRUNCATED AT 250 WORDS)

Aftercare↗

A day treatment program in a therapeutic community setting: six-month outcomes. The Walden House Day Treatment Program.

Although not well represented in the literature, day treatment programs targeting substance abuse problems have increased in both number and acceptability in recent years. This article reports on a day treatment program based on the Therapeutic Community (TC), and on outcomes for a sample of substance abuse clients (n = 66) entering the program. Participants were interviewed early in treatment and 6 months after admission using the Addiction Severity Index (ASI) and other measures. Clients entering day treatment were demographically diverse, with serious substance-abuse problems and psychiatric morbidity. Median retention in day treatment was about 5 weeks, but many clients received a contiguous episode of residential treatment, so that the median for total time in treatment was 18 weeks. Clients located and interviewed at 6-month follow-up (n = 38) showed significant improvement in alcohol and drug use, legal and social problems, and psychiatric symptoms. Findings suggest that day treatment can be used effectively as a precursor to residential treatment and that some clients applying for residential treatment can be treated effectively in day treatment alone.

Adult↗

Factors affecting hemodialysis and peritoneal dialysis efficiency.

Hemodialysis and peritoneal dialysis are two blood purification techniques that use similar operating systems. The hemodialysis system is based on three components (blood, membrane, and dialysate). The peritoneal dialysis system is based on the same components that can, however, be less manipulated and adjusted. In hemodialysis the blood flow is the main determinant of small solute removal thanks to a prevalently diffusive mechanism. Convection is also used to transport larger solutes across the membrane, but this mechanism relies on the high permeability coefficient of the membrane and high transmembrane pressure leading to high ultrafiltration rates. The membrane can therefore influence the performance of the techniques as far as solute removal and ultrafiltration are concerned. Finally, diffusion is facilitated by an improved distribution of dialysate flow in the dialysate compartment. This can be achieved with a special dialysate pathway configuration based on space yarns or micronodulation of the fibers. In peritoneal dialysis, blood flow and membrane characteristics can be less manipulated or almost not at all. The only variables are dialysate volume, flow, dwell time, and composition. Thanks to modification in these aspects of the dialysate, peritoneal dialysis techniques with different clearances and ultrafiltration rates can be accomplished.

Efficiency↗

[Genome analysis of bunyavirus recombinants by dot hybridization].

A simple method of the so-called pinpoint hybridization for the detection of genome RNAs and individual fragments of genome of the Bunyamwera family viruses is described. The method established linking of 2 out of 3 fragments of genome RNA of different members of the family.

Bunyamwera virus↗

Recognition and classification of clinically dysplastic nevi from photographs: a study of interobserver variation.

The recognition of dysplastic nevi from photographs can aid in population surveys of nevi and in epidemiological studies of melanoma risk. The reproducibility of techniques for recognizing nevi as dysplastic or for scoring them according to the degree of dysplasia has not been measured. Using photographs of 300 nevi taken in the course of a case-control study of melanoma, we assessed the agreement among six clinicians in independently categorizing nevi as dysplastic and in grading the degree of dysplasia. On average, reviewers agreed with each other 77% of the time in classifying a nevus as dysplastic or normal. Pairwise agreement within one point on a six-point scale occurred 87% of the time on average. These results suggest that criteria for recognizing nevi as clinically dysplastic from photographs can be applied reproducibility.

Analysis of Variance↗

The extending role of the renal nurse working in satellite units.

Like many large Renal Units the Renal Directorate within the Royal Hospitals NHS Trust has expanded rapidly over the past three years. With this increase in our population we have opened three community based haemodialysis units, two within District General Hospitals and the third a stand alone unit. All three units are Nurse led with Medical cover provided by the two main units of the Royal London Hospital and St Bartholomew's Hospital.

Community Health Services↗