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Biomedical subjects

Jan Passchier

Publications and source records attributed to Jan Passchier.

At least 19 recordsLinked to original sources
PubMed2006

The preliminary effectiveness of migraine lay trainers in a home-based behavioural management training.

OBJECTIVES: This pilot study examined the effectiveness and trainer skills of the first migraine lay trainers (MLTs). METHODS: In a stepwise training program eight MLTs participated in a behavioural management training (BMT) aimed at the prevention of migraine attacks by proactive relaxation and trigger management. After successful reduction of their migraine attacks, three MLTs provided BMT under supervision at home to one fellow patient and subsequently to a small group. RESULTS: Migraine frequency was significantly reduced in five out of eight patients trained by MLTs (mean 48%) and medication use decreased substantially in four patients (mean 47%). Qualities of MLTs concerned their motivational assistance, knowledge of premonitory symptoms and exchange of disease specific problems. Pitfalls were that migraine symptoms hampered an active guidance of the sessions and providing tailored feedback was difficult. CONCLUSION: The first MLTs were successful in training fellow patients in behavioural prevention of migraine attacks. PRACTICE IMPLICATIONS: Continuous supervision of MLTs health and trainer skills is recommended but is likely to have implications for cost-effectiveness.

Adaptation, Psychological↗
PubMed2006

One donor, two transplants: willingness to participate in altruistically unbalanced exchange donation.

Kidney exchange donation programs offer a good solution to help patients with a willing, but incompatible living kidney donor. Literature shows that blood type O patients are less likely to be selected for transplantation within a living exchange donation program. 'Altruistically unbalanced donation' could help these blood type O patients: one donor-recipient pair is incompatible (e.g. A-donor > O-recipient) and the other pair is compatible, but not identical (e.g. O-donor > A-recipient). Exchanging these kidneys would result in two compatible living donor kidney transplants. We studied whether compatible pairs would be willing to participate in such procedure. We included 96 living kidney donors and recipients in our study. These donors and recipients could be divided into two groups: (i) donors and their direct recipients (n = 48), and (ii) paired exchange donors and their intended recipients (n = 48). All were asked whether they would be willing to participate in altruistically unbalanced exchange donation, as long as direct donation was also an option. We found no group differences. We found that one third of the donors and recipients are willing to participate in altruistically unbalanced kidney exchanges. Therefore this form of donation may be a feasible addition to already existing living kidney exchange programs.

ABO Blood-Group System↗
PubMed2006

Translating instruments for cross-cultural studies in headache research.

OBJECTIVE: To describe translation methods, to outline current recommendations for translation and to give an overview of translation procedures used in headache. BACKGROUND: In health-care research, particularly in the domain of health-related quality of life, an increasing number of questionnaires are translated for cross- cultural comparison. A number of headache-related questionnaires have also been translated. To ensure true cross-cultural comparison, it is important to use rigorous translation methods to ensure a high quality translated version of the instruments. METHODS: Literature relevant to cross-cultural translations was reviewed, as well as literature concerning translation of headache-related instruments. CONCLUSION: More information on the translation process for headache-related instruments is essential to carry out high quality cross-cultural research. Recommendation are given to encourage good translation practices.

Cross-Cultural Comparison↗
PubMed2006

Androgenetic alopecia: stress of discovery.

The psychological problems of men in the initial stages of alopecia androgenetica (hereditary male hair loss) have seldom been studied. We evaluated two groups of 80 men with alopecia androgenetica in Stages II to IV, indicating the amount of hair loss (overall N=160; for Group I: M=48 yr., SD=18.2; for Group II: M=50 yr., SD=18.0) who visited a dermatology clinic for benign dermatological complaints but not for hair loss, by questionnaires and interview, retrospectively. As predicted, hair problems were reported to be significantly greater overall at the moment of discovery of hair loss than later. About half of the men reported feeling annoyed to very annoyed about the discovery of hair loss. For those patients, provision of information by internet might facilitate a visit to the dermatologist.

Adult↗
PubMed2005

Conservative treatments of children with episodic tension-type headache. A systematic review.

OBJECTIVE: We aimed to assess the effectiveness of conservative treatments in children with tension-type headaches (TTH). METHOD: We searched Medline, Embase and the Cochrane Library and performed reference checking. Two independent authors assessed trial quality and extracted data. Analysis was carried out according to type of intervention. RESULTS: In total we included 11 trials (427 TTH patients, age between 7-18 years) in this review. None of the studies were considered to be of high quality. Eight studies evaluated the effectiveness of relaxation training. Four studies included a waiting list or no treatment control group and in one study a placebo was used. CONCLUSION: We found conflicting evidence about the effectiveness of relaxation therapy when compared with no treatment or other treatments, with Relative Risks varying from 1.4 (0.6-3.2) to 10.6 (1.6-71.3). With regard to all other interventions evaluated (such as biofeedback, cognitive therapy or flupirtin) no evidence is found for or against their effectiveness.

Adolescent↗
PubMed2005

Altruistic living kidney donation challenges psychosocial research and policy: a response to previous articles.

BACKGROUND: Policies with respect to altruistic living kidney donation to strangers (both nondirected and directed donation) should, in addition to medical criteria, preferably be based on valid attitude research data. However, deciding on what data are relevant is a normative issue. The challenge for both research and policy making is to bring together empirical and normative issues. METHODS: By comparing two recent surveys, the authors shed light on the complex methodologic and ethical questions surrounding altruistic living kidney donation. RESULTS: The authors found that the main methodologic issues were the distinction between the willingness to donate and the acceptability of the offer, the difference between public attitudes observed in surveys ("facts") and well-considered moral judgments ("norms"), and biases caused by a misperception of central moral concepts (e.g., discrimination and injustice). The authors argue that transplantation centers have a good case for applying or initiating altruistic living donation programs. Centers should seek to influence public attitudes if these attitudes are shown to be biased by prejudice and misunderstanding. CONCLUSIONS: The authors advocate an interaction between research and policy making. Social research can best influence transplantation policies in altruistic living donation by in-depth interviews into the complicated background beliefs underlying personal preferences. In addition, the public should be encouraged to judge the immanent issues in a morally responsible way. In the end, a fair balance should be established between the impartial requirements of social justice and the partial motivations of individuals involved in altruistic living donation. Although discriminatory acts should be rejected categorically, donation policies should be willing to consider, support, and accept motivations based on personal loyalties.

Altruism↗
PubMed2005

Development and psychometric properties of a pain-related problem list for adolescents (PPL).

Instruments for measuring pain-related problems in adolescents with chronic pain are sparse, especially those based on the personal experiences of these adolescents. This study aimed to develop and test such an instrument, the pain-related problem list for adolescents (PPL). A sample of 129 adolescents with chronic pain without documented physiological etiology completed the 57-item problem list, which was based on interviews with a similar group of adolescents with chronic pain. Principal components analysis yielded four domains: problems related to (1) concentration; (2) mobility; (3) adaptability; and (4) mood. The questionnaire was shortened to 18 items and has good reliability (total alpha = 0.82; concentration alpha = 0.86; mobility alpha = 0.77; adaptability alpha = 0.71; and mood alpha = 0.78); the validity also proved to be adequate, especially in the general population sample. The PPL provides a tool to assess the impact of chronic pain in adolescents. Future research should focus on further validation of the PPL in a large clinical population and establishing its test-retest reliability.

Activities of Daily Living↗
PubMed2005

A cognitive-behavioural program for adolescents with chronic pain-a pilot study.

The purpose of this pilot study is to evaluate the feasibility of a cognitive-behavioural training program for adolescents with chronic pain irrespective of pain localisation. A secondary aim was to give an impression of the effect of the program on pain and quality of life. Eight adolescents (14-18 years) with chronic non-organic pain recruited from the general population (and their parents) participated in this pilot study. The intervention included five group meetings alternated with four telephone contacts (during the self-management weeks) over a period of 9 weeks. The training aimed to change pain behaviour through pain education, relaxation strategies, problem-solving techniques, assertiveness training, cognitive restructuring and by stimulating the adolescent's physical activity level. The training further addresses the social context of pain by inviting parents to attend two meetings for the parents only, and by asking the adolescents to bring a peer to one of the meetings. Adolescents and their parents were positive about the program. Adolescents felt they were more in control of their pain and parents valued the support they experienced in helping their children to master the pain. The training was considered to be feasible in daily life. Further, the preliminary data showed an effect on pain and quality of life in the expected direction. The results underline the need for a definitive study with a larger sample size and a random controlled design.

Adaptation, Psychological↗
PubMed2005

Postmortal or living related donor: preferences of kidney patients.

We studied the willingness and motives for accepting a living kidney donation in 61 kidney patients on the waiting list by a semistructured interview and a questionnaire on two occasions. Between both moments of measurement patients received general information on transplantation options. We tested whether demographic data, medical status data or quality of life correlated with treatment choice. Our results showed that 61% of the patients preferred living kidney donation to postmortal donation. Their main motivation for this choice was the better quality of the living kidney. The most often named reasons to choose postmortal donation were unwillingness to burden a loved one and fear of psychological problems in relation to the donor after transplantation. There was no statistical significant change of preference between both moments of measurement; however there seemed to be a tendency in favor of living kidney donation. Fewer years spent on renal replacement therapy correlated statistically significant with the choice for living kidney donation. These findings encourage the development of new strategies to facilitate the living kidney donation program, and confirm the need for the standard option of psychosocial support for patients.

Decision Making↗
PubMed2005

Symptomatic treatment of migraine in children: a systematic review of medication trials.

OBJECTIVE: Treatment of pediatric migraine includes an individually tailored regimen of both nonpharmacologic and pharmacologic measures. The mainstay of symptomatic treatment in children with migraine is intermittent oral or suppository analgesics, but there is no coherent body of evidence on symptomatic treatment of childhood migraine available. The objective of this review is to describe and assess the evidence from randomized and clinical controlled trials concerning the efficacy and tolerability of symptomatic treatment of migraine in children. DESIGN: Systematic review according to the standards of the Cochrane Collaboration. METHODS: Databases were searched from inception to June 2004. Additional reference checking was performed. Two authors independently selected randomized and controlled trials evaluating the effects of symptomatic treatment in children (<18 years old) with migraine, using headache (HA) clinical improvement as an outcome measure. Two authors assessed trial quality independently by using the Delphi list, and data were extracted from the original reports by using standardized forms. Quantitative and qualitative analysis was conducted according to type of intervention. RESULTS: A total of 10 trials were included in this review, of which 6 studies were considered to be of high quality. The number of included participants in each trial ranged from 14 to 653, with a total of 1575 patients included in this review. Mean dropout rate was 19.8% (range: 0-39.1%), and the mean age of participants was 11.7 +/- 2.2 years (range: 4-18 years). All studies used HA diaries to assess outcomes. In most studies, a measure of clinical improvement was calculated by using these diaries. Improvement often was regarded as being clinically relevant when the patients' HA declined by > or =50%. Regarding oral analgesic treatment, the effectiveness of acetaminophen, ibuprofen, and nimesulide were evaluated. When compared with placebo, acetaminophen (relative risk [RR]: 1.5; 95% confidence interval [CI]: 1.0-2.1) and ibuprofen (pooled RR: 1.5; 95% CI: 1.2-1.9) significantly reduced HAs. We conclude that there is moderate evidence that both acetaminophen and ibuprofen are more effective in reduction of symptoms 1 and 2 hours after intake than placebo with minor adverse effects. No clear differences in effect were found between acetaminophen and ibuprofen or nimesulide. Regarding the nonanalgesic interventions, nasal-spray sumatriptan, oral sumatriptan, oral rizatriptan, oral dihydroergotamine, intravenous prochlorperazine, and ketorolac were evaluated. When compared with placebo, nasal-spray sumatriptan (pooled RR: 1.4; 95% CI: 1.2-1.7) seemed to significantly reduce HAs. We conclude that there is moderate evidence that nasal-spray sumatriptan is more effective in reduction of symptoms than placebo but with significantly more adverse events. No differences in effect were found between oral triptans and placebo. All medications were well tolerated, but significantly more adverse events were reported for nasal-spray sumatriptan compared with placebo. We also conclude that there is moderate evidence that intravenous prochlorperazine is more effective than intravenous ketorolac in the reduction of symptoms 1 hour after intake. No differences in effect were found between oral dihydroergotamine and placebo. CONCLUSIONS: Acetaminophen, ibuprofen, and nasal-spray sumatriptan are all effective symptomatic pharmacologic treatments for episodes of migraine in children. The new frontier for symptomatic treatment is likely to be the development of triptan agents for use in children. Most treatments have only been evaluated in 1 or 2 studies, which limits the generalizability of the findings. We strongly recommend performing a large, high-quality randomized, controlled trial evaluating different symptomatic medications compared with each other or to placebo treatment. Favorable high-quality studies should be performed and reported according to the CONSORT statement. Clinical improvement of HA should be used as the primary outcome measure, but quality of life, days missed at school, and satisfaction of child or parents should also be used as an outcome measure in future studies.

Acetaminophen↗
PubMed2004

Starting a crossover kidney transplantation program in the Netherlands: ethical and psychological considerations.

On April 15th, 2003, the first crossover kidney transplantation took place in The Netherlands. In September of the same year, a national database was established to facilitate kidney exchange between two donor-recipient couples. During 2004, kidneys from living donors will be exchanged between the seven university medical centers in The Netherlands. One of the conditions for successfully implementing this program was the need to address the ethical and psychologic implications involved. In this article we will discuss the ethical and psychologic considerations that are accompanying the practical preparations for the first Dutch crossover transplantation program. We identified five topics of interest: the influence of "donation by strangers" on the motivation and willingness of donor-patient couples, the issue of anonymity, the loss of the possibility of "medical excuses" for unwilling donors, the view that crossover is a first step to commercial organ trade, and the interference with existing organ donation programs. We concluded that whether viewed separately or in combination, these issues do not impede the efficient organization of a crossover program or raise worrying ethical issues.

Anonyms and Pseudonyms↗
PubMed2004

The effectiveness of physiotherapy and manipulation in patients with tension-type headache: a systematic review.

The study design is a systematic review of randomised clinical trials (RCTs). The objectives of the present study are to assess the effectiveness of physiotherapy and (spinal) manipulation in patients with tension-type headache (TTH). No systematic review exists concerning the effectiveness of physiotherapy and (spinal) manipulation primarily focussing on TTH. Literature was searched using a computerised search of MEDLINE, EMBASE and the Cochrane library. Only RCTs including physiotherapy and/or (spinal) manipulation used in the treatment of TTH in adults were selected. Two reviewers independently assessed the methodological quality of the RCTs using the Delphi-list. A study was considered of high quality if it satisfied at least six points on the methodological quality list. Twelve publications met the inclusion criteria, including three dual or overlapping publications resulting in eight studies included. These studies showed a large variety of interventions, such as chiropractic spinal manipulation, connective tissue manipulation or physiotherapy. Only two studies were considered to be of high quality, but showed inconsistent results. Because of clinical heterogeneity and poor methodological quality in many studies, it appeared to be not possible to draw valid conclusions. Therefore, we conclude that there is insufficient evidence to either support or refute the effectiveness of physiotherapy and (spinal) manipulation in patients with TTH.

Activities of Daily Living↗
PubMed2004

Perception of prognostic risk in patients with multiple sclerosis: the relationship with anxiety, depression, and disease-related distress.

OBJECTIVE: The aim of the study was to investigate the impact of perception of prognostic risk on anxiety, depression, and disease-related distress in patients with multiple sclerosis (MS). STUDY DESIGN AND SETTING: Perceived risk and perceived seriousness of the 2-year, 10-year, and lifetime prognosis of wheelchair dependence, disability status, anxiety, depression, and disease-related distress were assessed in 101 patients. Distress was measured as the intrusion and avoidance of MS-related thoughts and feelings. RESULTS: Patients with higher perceptions of 2-year, 10-year, or lifetime risk were bothered by more intrusion of MS-related thoughts and feelings. Only higher perception of the 2-year risk of wheelchair dependence was significantly related with higher levels of anxiety, depression, and avoidance. Similarly, higher perception of the seriousness of wheelchair dependence was consistently associated with more intrusion and avoidance, but only perceived seriousness of the 2-year prospect of wheelchair dependence was significantly correlated with anxiety and depression. All relations were independent of clinically assessed disability status. CONCLUSION: Perceptions of the short-term risk and seriousness of wheelchair dependence were significantly related to anxiety, depression, and disease-related distress in patients with MS. These findings underscore the importance of informing patients with chronic disorders about the short-term prognosis of important long-term consequences of disease.

Adult↗
PubMed2004

The Liver Disease Symptom Index 2.0; validation of a disease-specific questionnaire.

The available liver disease-specific questionnaires do address severity of symptoms but hardly evaluate how patients experience these specific symptoms during daily activities. The Liver Disease Symptom Index 2.0 (LDSI) includes 18 items that measure symptom severity and symptom hindrance in the past week. In a large survey (n = 1175) conducted in collaboration with the Dutch liver patient association, convergent and divergent construct validity and the surplus value of including symptom severity and symptom hindrance items in the LDSI were examined. The LDSI items showed expected convergent and divergent correlations with Short Form-36 (SF-36) and Multidimensional Fatigue Index-20 (MFI-20) scales. Correlations revealed only a slight to moderate overlap between LDSI items and SF-36 and MFI-20 scales. The impact of symptom severity and symptom hindrance on generic health related quality of life (HRQoL) varied in a different way across liver patients, which indicated that symptom severity items and the symptom hindrance items measure different aspects of HRQoL. We conclude that the LDSI provides information complementary to the information given by the SF-36 and the MFI-20 and that it is psychometrically sound to include both symptom severity items and symptom hindrance items in the LDSI.

Adult↗
PubMed2003

Generic and disease-specific health related quality of life in non-cirrhotic, cirrhotic and transplanted liver patients: a cross-sectional study.

BACKGROUND: Studies on Health Related Quality of Life (HRQoL) of chronic liver patients were performed in clinical populations. These studies included various disease stages but small variations in aetiology and no transplanted patients. We performed a large HRQoL study in non-cirrhotic, cirrhotic and transplanted liver patients with sufficient variety in aetiology. We compared the generic HRQoL and fatigue between liver patients and healthy controls and compared the disease-specific and generic HRQoL and fatigue between non-cirrhotic, cirrhotic and transplanted liver patients, corrected for aetiology. METHODS: Members of the Dutch liver patient association received the Short Form-36, the Liver Disease Symptom Index and the Multidimensional Fatigue Index-20. Based on reported clinical characteristics we classified respondents (n = 1175) as non-cirrhotic, compensated cirrhotic, decompensated cirrhotic or transplants. We used linear, ordinal and logistic regression to compare the HRQoL between groups. RESULTS: All liver patients showed a significantly worse generic HRQoL and fatigue than healthy controls. Decompensated cirrhotic patients showed a significantly worse disease-specific and generic HRQoL and fatigue than non-cirrhotic patients, while HRQoL differences between non-cirrhotic and compensated cirrhotic patients were predominantly insignificant. Transplanted patients showed a better generic HRQoL, less fatigue and lower probabilities of severe symptoms than non-cirrhotic patients, but almost equal probabilities of symptom hindrance. CONCLUSIONS: HRQoL in chronic liver patients depends on disease stage and transplant history. Non-cirrhotic and compensated cirrhotic patients have a similar HRQoL. Decompensated patients show the worst HRQoL, while transplanted patients show a significantly better HRQoL than cirrhotic and non-cirrhotic patients.

Adolescent↗
PubMed2003

Motor activity and autonomic cardiac functioning in major depressive disorder.

BACKGROUND: The daily pattern of motor activity and the autonomic cardiovascular regulation were studied in major depression to quantify changes in psychomotor function and autonomic cardiac functioning. Additionally, relationships between motor activity parameters, cardiovascular measures and specific clinical features were examined. METHODS: Wrist-actigraphy was used to monitor 24-h motor activity for 67 unmedicated (unipolar) depressed inpatients and 64 control subjects. During supine rest, spectral analysis was applied to assess HR and SBP variability, a baroreflex sensitivity (BRS) index and the respiratory frequency, in addition to mean heart rate (HR) and blood pressure (BP) levels for the patient group and a second control group (N=51). RESULTS: The patients showed a lower motor activity level and a reduced fragmentation of motor activity during wake, and a higher motor activity level and a decreased immobility during sleep. The mean HR and DBP level and the respiratory frequency were higher in the patient group than in the control group, but no differences in HR and SBP variability or BRS were found. Furthermore, motor activity parameters and cardiovascular measures of the patients were related to agitation and retardation and overall, patients with lower motor activity levels demonstrated lower SBP levels. CONCLUSIONS: This study confirms that the 24-h pattern of motor activity is altered in unmedicated depressed inpatients, but limited evidence was found for an autonomic cardiac dysfunction. Within the patient group there were relationships between motor activity parameters, cardiovascular measures, and clinical features, but the underlying neurobiological pathways need to be further explored.

Adult↗