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Biomedical subjects

Michael Krausz

Publications and source records attributed to Michael Krausz.

16 recordsLinked to original sources
PubMed2005

Guidelines for the treatment of hepatitis C virus infection in injection drug users: status quo in the European Union countries.

Treatment guidelines are considered to be an important tool in steering patients to medical treatment. This study was conducted to analyze guidelines for the treatment of hepatitis C virus (HCV) infection in injection drug users (IDUs) in the European Union (EU) countries as a component of treatment access. National and international databases, expert contacts, professional societies, and health administrations were approached to acquire guidelines. According to their quality standard, guidelines were divided into expert opinions, semiofficial guidelines, official guidelines, and consensus processes. Recommendations for the treatment of HCV infection in IDUs vary substantially, from lack of recommendations and outright treatment disapproval to recommendations for treatment under specified circumstances. Recent guidelines that apply qualified process procedures that include literature research tend to be more permissive. Qualified guideline processes in each EU country and subsequently renewed pan-European guidelines are needed.

Consensus↗
PubMed2005

Bowel preparation is associated with spillage of bowel contents in colorectal surgery.

PURPOSE: Infectious complications pose a significant cause of morbidity in colon and rectal surgery. This study was designed to assess the effect of bowel preparation on spillage of bowel contents into the peritoneal cavity during colorectal surgery, and its potential effect on the rate of postoperative infectious complications. METHODS: The quality of bowel preparation and the incidence of spillage of bowel contents were prospectively assessed in patients undergoing elective colon and rectal resection. The patients were followed for 30 days for postoperative infectious and noninfectious complications. RESULTS: A total of 333 patients were included in this study, of which 181 did not receive mechanical bowel preparation. Intraoperative spillage of bowel contents occurred in 48 patients (14 percent), whereas in 285 patients (86 percent), spillage did not occur. There was a trend toward a higher rate of overall surgical infectious and noninfectious complications in patients who had spillage of bowel contents compared with patients without spillage; however, this difference was not statistically significant (18.7 vs. 11 percent, and 29 vs. 19 percent, respectively). Preoperative mechanical bowel preparation and colocolonic or colorectal anastomosis was associated with a higher rate of bowel contents spillage, although this difference did not reach statistical significance. Liquid colonic contents caused significantly higher rates of spillage. CONCLUSIONS: Spillage of bowel contents into the peritoneal cavity during colon and rectal surgery may increase the rate of postoperative infectious complications. In addition, inadequate mechanical bowel preparation, leading to liquid bowel contents, increases the rate of intraoperative spillage.

Abscess↗
PubMed2005

Significance of comorbidity for the long-term course of opiate dependence.

OBJECTIVE: Studies on drug dependence show a high prevalence of comorbidity with additional mental disorders. Comorbidity patients also show more poly-substance use and other psychosocial problems. This study analyzed the importance of comorbidity for the long-term course of opiate dependence. METHOD: 350 opiate-dependent patients were examined at yearly follow-ups over 4 years using the EuropASI for the assessment of drug-related problems and the CIDI for diagnostic of psychiatric disorders. 196 patients were reached at final follow up (56%). RESULTS: Of the patients reached at final follow-up, 30% had severe, 29% mild and 41% no clinically relevant disorders at baseline. However, the linear relationship at baseline--the more severe the disorder, the greater the impairment through drug-related problems--was not present at final follow-up. The results show that lifetime diagnosis of mental disorder had no prognostic relevance for the long-term course of drug dependency. CONCLUSION: The assumption that opiate users with an additional mental disorder are more vulnerable in their course of addiction could not be confirmed.

Adult↗
PubMed2004

Cocaine use in Europe - a multi-centre study. Methodology and prevalence estimates.

An increase in the use of cocaine and crack in several parts of Europe has raised the question whether this trend is similar to that of the USA in the 1980s. However, research in the field of cocaine use in Europe has been only sporadic. Therefore, a European multi-centre and multi-modal project was designed to study specific aspects of cocaine and crack use in Europe, in order to develop guidelines for public health strategies. Data on prevalence rates were analysed for the general population and for specific subgroups. Despite large differences between countries in the prevalence of cocaine use in the general population, most countries show an increase in the last few years. The highest rate with a lifetime prevalence of 5.2% was found for the United Kingdom, although with a plateau effect around the year 2000. With regard to specific subgroups, three groups seem to show a higher prevalence than the general population: (1) youth, especially in the party scene; (2) socially marginalized groups, such as homeless and prostitutes or those found in open drug scenes; (3) opiate-dependent patients in maintenance treatment who additionally use cocaine. Specific strategies need to be developed to address problematic cocaine use in these subgroups.

Adolescent↗
PubMed2004

Cocaine use in Europe - a multi-centre study: patterns of use in different groups.

AIM: The study investigates patterns of cocaine powder and crack cocaine use of different groups in nine European cities. DESIGN, SETTING, PARTICIPANTS: Multi-centre cross-sectional study conducted in Barcelona, Budapest, Dublin, Hamburg, London, Paris, Rome, Vienna, and Zurich. Data were collected by structured face-to-face interviews. The sample comprises 1,855 cocaine users out of three subgroups: 632 cocaine users in addiction treatment, mainly maintenance treatment; 615 socially marginalized cocaine users not in treatment, and 608 socially integrated cocaine users not in treatment. MEASUREMENTS: Use of cocaine powder, crack cocaine and other substances in the last 30 days, routes of administration, and lifetime use of cocaine powder and crack cocaine. FINDINGS: The marginalized group showed the highest intensity of cocaine use, the highest intensity of heroin use and of multiple substance use. 95% of the integrated group snorted cocaine powder, while in the two other groups, injecting was quite prevalent, but with huge differences between the cities. 96% of all participants had used at least one other substance in addition to cocaine in the last 30 days. CONCLUSIONS: The use of cocaine powder and crack cocaine varies widely between different groups and between cities. Nonetheless, multiple substance use is the predominating pattern of cocaine use, and the different routes of administration have to be taken into account.

Adolescent↗
PubMed2003

Quality of life in patients with malignant choroidal melanoma after radiotherapy.

BACKGROUND: Patient-orientated endpoints have attracted little attention in patients with malignant choroidal melanoma. This study was conducted to explore the long-term effects of malignant choroidal melanoma and radiotherapy on QOL by means of a differentiated and modular QOL approach, including global QOL, social support, and mental health, in comparison with sociodemographically matched healthy controls. METHODS: A random sample of 100 outpatients treated by radiotherapy were asked by mail to take part in a psychodiagnostic study [instruments: Short-Form 36 Health-Survey (SF-36), Symptom Checklist-90-Revised, German Social Support Questionnaire]. The same instruments were applied to a healthy control group, which was matched to patients with regard to age, gender, and vocational situation. RESULTS: 93 patients (average age 61.2 years) responded at an average of 5.5 years (+/-3.7) after diagnosis. Visual acuity in the affected eye decreased considerably from diagnosis (0.49+/-0.30) to participation in the study (0.09+/-0.21). Compared with healthy controls, patients reported on average statistically significantly lower global QOL (SF-36), whereas social support and mental distress did not differ. Frequencies of clinically relevant mental distress were significantly higher in patients than in controls (35.5% vs. 16.1%). Mental distress was associated with poorer visual acuity, but not with the extent of loss of visual acuity or number of follow-up treatments. CONCLUSION: Patients with choroidal melanoma suffer from low long-term global QOL, and every third patient suffers from relevant mental distress. Regular screening for mental distress should be implemented along with psychological counseling. Additional follow-up treatment does not seem to induce mental distress.

Activities of Daily Living↗
PubMed2003

Comorbidity of schizophrenia and galactosemia: effective clozapine treatment with weight gain.

Weight gain with atypical antipsychotics such as clozapine has been hypothesized to have a multifactorial genesis. Beside changes in neurotransmitter systems caused by antipsychotic-induced receptor blockade, hormonal changes and other neuroleptic side-effects (sedation, reduced activity, reduced basal metabolic rate, dry mouth) are also discussed. Our unique case report of a patient with comorbid galactosemia and schizophrenia is an interesting example of weight gain being a positive side-effect of clozapine, not necessarily associated with increased appetite and higher caloric intake.

Adult↗
PubMed2003

Objective and subjective efficacy as well as tolerability of olanzapine in the acute treatment of 120 patients with schizophrenia spectrum disorders.

The aim of the present study was to evaluate the objective and subjective efficacy as well as tolerability of olanzapine in acute treatment of schizophrenia spectrum disorders under naturalistic non-selective conditions. Inpatients with schizophrenia spectrum disorders, consecutively admitted over an 18-month period, treated with olanzapine, were included. Diagnoses were made according to ICD-10 criteria based on repeated clinical assessments. Efficacy and tolerability of olanzapine were assessed at baseline and at the end of inpatient acute treatment including Positive and Negative Symptom Scale (PANSS), Clinical Global Impression, subjective assessments, UKU and biological investigations. One hundred and twenty non-selected patients who met ICD-10 criteria for schizophrenia (73%), schizophreniform disorder (14%) or schizoaffective disorder (13%) were treated with olanzapine 15.3+/-5.2 mg/day. Baseline severity (PANSS total mean score 102.2) was higher compared to various admittance studies (PANSS total mean score 86-90). In 32% of patients (n=38), olanzapine treatment was discontinued, mainly because of inefficacy for positive (89%, n=34) and/or negative (95%, n=36) symptoms and/or because of adverse events (37%, n=14). Response rates as improvement in PANSS total score (after > or =3 weeks of treatment) of > or =20%, 30% or 40% were 68%, 55% and 35%, respectively. Response rates in post-hoc defined treatment resistant patients were not significantly different from non-refractory patients. Sedation (26%) was the most common side-effect, followed by weight gain (22%). With regards to subjective efficacy, 30% of the patients were not satisfied with the efficacy of olanzapine, while only 6% of the patients reported a not satisfying subjective tolerability. According to duration of olanzapine treatment, the results for patients, who remained in hospital, revealed a faster increase of weight compared to admittance studies (7 kg in 14 weeks versus 7 kg in 38 weeks). Olanzapine has been found to be effective and tolerable, also under naturalistic acute treatment conditions. Compared to previous double-blind admittance studies, patients had a higher severity of illness at entry and a lower > or =40% PANSS total score response rate. By contrast to previous results, mean dose of olanzapine was similar for multiple- and first-episode patients, and weight gain was more severe. The results underline the need of Phase IV studies for the assessment of clinical antipsychotic efficacy and tolerability.

Administration, Oral↗
PubMed2003

Smoking cocarettes: a less harmful alternative of cocaine use?

Smoking cocaine hydrochloride in the form of cocarettes is a method of cocaine use that has not been described in the scientific literature so far. Nonetheless it seems to be a somewhat common method of cocaine use in order to avoid the nasal irritation. Three case reports are presented in order to discuss the possibility.

Adult↗
PubMed2002

Effect of transforming growth factor-alpha on intestinal adaptation in a rat model of short bowel syndrome.

OBJECTIVE: TGF-alpha has recently been shown to stimulate enterocyte proliferation. In the present study we investigated the effect of TGF-alpha on enterocyte proliferation and loss via apoptosis and its effects on intestinal adaptation in a rat following massive bowel resection. METHODS: Male Sprague-Dawley rats underwent bowel transection and reanastomosis (sham group) or 75% small bowel resection and anastomosis (SBS group) and were treated with intraperitoneal TGF-alpha (75 microg/kg) from the ninth postoperative day (SBS-TGF-alpha group). Parameters of intestinal adaptation (overall bowel and mucosal weight, mucosal DNA and protein, villus height, and crypt depth), enterocyte proliferation, and apoptosis were determined on day 15. Statistical significance was determined by ANOVA with a P < 0.05 considered significant. RESULTS: SBS-TGF-alpha rats demonstrated a significant increase (vs SBS) in duodenal, jejunal, and ileal overall bowel and mucosal weights; ileal mucosal DNA and protein; and jejunal and ileal villus height. SBS-TGF-alpha rats also showed an increased cell proliferation index in jejunum (704 +/- 43 vs 499 +/- 63 BrdU-positive cells/10 crypts, P < 0.05) and ileum (715 +/- 84 vs 529 +/- 40 BrdU-positive cells/10 crypts, P < 0.05) and decreased apoptotic index in ileum (8.7 +/- 1.1 vs 21.8 +/- 3.2 apoptotic cells/1,000 villus cells, P < 0.05) compared to SBS animals. CONCLUSIONS: In a rat model of SBS, TGF-alpha enhances intestinal adaptation. Possible mechanisms may include increased cell proliferation and decreased enterocyte loss via apoptosis.

Adaptation, Physiological↗
PubMed2002

Belief systems as coping factors for traumatized refugees: a pilot study.

The severity of traumatization seems to correlate with a more severe course of post-traumatic stress disorder (PTSD) (and other post-traumatic disorders), while firm belief systems have been found to be a protective factor against post-traumatic disorders. This study sought to determine the role of belief systems in the outcome of psychotherapy for traumatized refugees. The charts of 141 consecutively treated refugees were evaluated retrospectively. A firm belief system was found to be an important predictor for a better therapy outcome. The importance of a firm belief system as a coping factor, which should be used as an instrument in therapy, is discussed.

Adaptation, Psychological↗
PubMed2002

Heroin-assisted treatment as a response to the public health problem of opiate dependence.

Injection drug use (involving the injection of illicit opiates) poses serious public health problems in many countries. Research has indicated that injection drug users are at higher risk for morbidity in the form of HIV/AIDS and Hepatitis B and C, and drug-related mortality, as well as increased criminal activity. Methadone maintenance treatment is the most prominent form of pharmacotherapy treatment for illicit opiate dependence in several countries, and its application varies internationally with respect to treatment regulations and delivery modes. In order to effectively treat those patients who have previously been resistant to methadone maintenance treatment, several countries have been studying and/or considering heroin-assisted treatment as a complementary form of opiate pharmacotherapy treatment. This paper provides an overview of the prevalence of injection drug use and the opiate dependence problem internationally, the current opiate dependence treatment landscape in several countries, and the status of ongoing or planned heroin-assisted treatment trials in Australia, Canada and certain European countries.

Australia↗
PubMed2002

Executive functioning in obsessive-compulsive disorder, unipolar depression, and schizophrenia.

The present study investigated whether schizophrenic, unipolar depressive, and obsessive-compulsive psychiatric patients show a distinguishable profile in tasks considered sensitive to frontal lobe functioning. Three psychiatric samples, each comprising 25 patients with little symptomatic overlap, were compared to 70 healthy controls. Participants completed several executive tasks (Wisconsin Card Sorting Test (WCST), verbal fluency, digit span, Stroop, and Trail-Making). Except for age, which was entered as a covariate, subjects did not differ in any sociodemographic background variable. Healthy controls showed superior performance relative to depressive and schizophrenic patients who exhibited comparable deficits in all tasks. Obsessive-compulsive disorder (OCD) patients revealed dysfunctions in the Trail-Making Tests A and B and in the fluency task. Dysfunctions in the domains of working memory, verbal fluency, distractibility, and concept formation were not confined to a specific psychiatric population.

Journal Article↗