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Biomedical subjects

J Groothoff

Publications and source records attributed to J Groothoff.

4 recordsLinked to original sources
PubMed2001

Motives for seeking a second opinion in orthopaedic surgery.

OBJECTIVES: The number of second opinions in orthopaedic surgery is increasing rapidly, yet the grounds on which patients and their doctors decide to seek a second opinion have been little studied. The goal of the study was to identify patient and consultant factors that appeared to contribute to a second opinion being sought. METHODS: Two thousand and seventy-nine consecutive new patients visiting an orthopaedic surgical outpatient clinic in 1996-1997 participated in the study. Patients were self-defined as seeking a second opinion if they had visited at least one other consultant for the same condition within the previous two years. Each of these patients completed a questionnaire before seeing the orthopaedic surgeon; this included details about the physician-patient relationship, reasons for seeking a second opinion and perceived health status. The first-opinion consultants were contacted by mail; their practice characteristics and the motives for seeking a second opinion were also obtained. RESULTS: Thirty per cent of the study population (n = 625) had sought a second opinion. Patients sought a second opinion because of disappointment concerning their original treatment, or because they wanted more information about their condition and/or its treatment. First-opinion consultants were usually unaware of these communication issues. Patients' inclination to initiate a second opinion was best predicted by their evaluation of their relationship with their first-opinion consultant. The propensity to initiate referrals for a second opinion varied widely among the first-opinion consultants (10-70%) and was inversely proportional to the size of the group they worked in and their distance from the referral centre. CONCLUSIONS: Patients did not seek a second opinion because they had doubts about the competence of their treating consultant, but because they were dissatisfied about the level of communication or about the results of their treatment. Medical educators should continue to increase their efforts to improve specialists' communication and relationship skills since these seem to generate referrals for second opinions, which occupy clinic space that could be used by other patients.

Humans↗
PubMed1997

IgG glycation and function during continuous ambulatory peritoneal dialysis.

IgG in dialysate may have an important role in anti-infection mechanisms during continuous ambulatory peritoneal dialysis (CAPD). As Fc fragment oligosaccharidic chains are crucial for IgG effector functions, we have tested the hypothesis that IgG glycation might occur during CAPD and modify IgG properties. Purified normal IgG was incubated with glucose solutions of different concentrations and pH. Separation of glycated IgG was performed by affinity chromatography. Complement activation (C3c deposition) and phagocytosis by polymorphonuclear leucocytes (PMN) were studied in vitro using Staphylococcus aureus Wood (STAW) as antigen. In addition, we compared the percentages of glycated IgG in IgG purified from sera and dialysates of 12 CAPD patients. The percentage of glycated IgG after in vitro incubation of normal IgG with glucose solutions was directly proportional to glucose concentrations, incubation time and pH. Glycated IgG anti-STAW induced a higher C3c deposition than non-glycated IgG anti-STAW (C3c/IgG (mean +/- SD) 0.96 +/- 0.06 vs 0.79 +/- 0.08; P = 0.027). PMN phagocytosis was not affected by IgG glycation. The percentages of glycated IgG in dialysates of CAPD patients were greater than those in corresponding sera (5.38 +/- 2.36% vs 4.56 +/- 2.47%; P = 0.006). It is concluded that IgG glycation may take place in the peritoneal cavity during CAPD and lead to enhanced complement activation. This could explain the high degree of complement activation previously described in dialysate of CAPD patients and might theoretically result in a reduction of complement factors available in dialysate for adequate anti-infection mechanisms.

Adolescent↗
PubMed1995

Social inequalities and health among children aged 10-11 in The Netherlands: causes and consequences.

Socioeconomic health differences (SEHD) are relatively small in childhood. In adolescence they almost seem to disappear and among young adults they re-emerge. This article deals with mechanisms that contribute to the emergence of health differences by studying a group of 10-11 year old children in The Netherlands (n = 908). The role of determinants of health in the relation between socioeconomic status and health (causation) is studied, as well as the influence of health on school performance (selection). Both causation and selection mechanisms prove to exist. Life style and life circumstances are unequally distributed among the socioeconomic groups and can (partly) explain the relation between socioeconomic status and health. The health of the children is related with school performance, which can be seen as health selection. This relation however was only found in the lowest socioeconomic groups. In the lowest socioeconomic groups less healthy children perform worse at school than healthy children. The unequal distribution of determinants of health and health selection in the educational career among children probably contribute to SEHD in adult life.

Child↗