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Biomedical subjects

J F Bartelsman

Publications and source records attributed to J F Bartelsman.

At least 19 recordsLinked to original sources
PubMed2001

[Consequences of caustic damage of the esophagus].

Following ingestion of a highly concentrated acetic acid solution, three women aged 29, 23 and 25 years old, suffered damage to the oesophagus and the stomach, respiratory and renal insufficiency and haemolysis. After intensive treatment, gastric tube reconstruction was carried out in 2 of these patients, and the third woman required repeated dilatations of the oesophageal stricture from 6 weeks after ingestion onwards. This resulted in a normal passage of solid food in all women. A 58-year-old man who had ingested caustic soda at 4 years of age, presented with increasing problems associated with swallowing food. A squamous cell carcinoma was diagnosed and treated with chemotherapy, oesophagus-cardia resection and gastric tube reconstruction. After 2 years the tumour has not recurred. Ingestion of corrosive substances can lead to serious damage of the gastrointestinal tract. Early endoscopy is important in establishing the extent of the injury. During the acute phase, intensive care admittance is often necessary and resection of the oesophagus is also necessary in some cases. Subsequent treatment can vary from endoscopic dilations to gastric tube reconstruction following resection of the oesophagus.

Acetic Acid↗
PubMed2001

[Diagnostic image (49). Megaesophagus in achalasia].

Already as a child a 49-year-old man suffered from cough, regurgitation and dysfagia. He had a mega-esophagus, caused by achalasia. He was successfully treated by resection of the esophagus and intrathoracic gastric bypass.

Cough↗
PubMed2000

Laparoscopic or conventional Nissen fundoplication for gastro-oesophageal reflux disease: randomised clinical trial. The Netherlands Antireflux Surgery Study Group.

BACKGROUND: For the surgical treatment of gastrooesophageal reflux disease (GORD), laparoscopic Nissen fundoplication has largely replaced the open procedure. Retrospective and prospective non-randomised studies have shown similar results after laparoscopic Nissen fundoplication compared with the open procedure. METHODS: In a multicentre randomised trial candidates for surgical treatment of GORD were randomly assigned to either laparoscopic or open 360 degrees Nissen fundoplication. Primary endpoints were dysphagia, recurrent GORD, and intrathoracic hernia. Secondary endpoints were effectiveness and quality of life. This planned interim analysis focuses on endpoints and complications and in-hospital costs. FINDINGS: At the time of interim analysis, 11 patients in the laparoscopic group and one in the conventional group had reached a primary endpoint (p=0.01; relative risk=8.8, 95% CI 1.2-66.3). This difference was caused mainly by whether or not patients had dysphagia (seven patients in the laparoscopic group and none in the conventional group, p=0.016). INTERPRETATION: Although laparoscopic Nissen fundoplication was as effective as the open procedure in controlling reflux, the significantly higher risk of reaching a primary endpoint in the laparoscopic group led us to stop the study.

Adult↗
PubMed2000

Palliation of patients with esophagogastric neoplasms by insertion of a covered expandable modified Gianturco-Z endoprosthesis: experiences in 153 patients.

BACKGROUND: We aimed to evaluate the short- and long-term outcomes of treatment by insertion of a covered expandable modified Gianturco-Z endoprosthesis (Song stent) in patients with esophagogastric malignancies. METHODS: Consecutive patients with esophagogastric malignancies in whom a Song stent was inserted were included. Data were retrieved retrospectively. Dysphagia before and after stent placement was scored on a 5-point scale. Early (less than 30 days) and late complications (more than 30 days) were scored. RESULTS: Analysis included 164 stents in 153 patients. Indications for stent placement were dysphagia and/or fistulas/perforations. The dysphagia score improved from a mean of 3.7 to 2.2 after stent placement (p < 0.0001). Fistulas/perforations sealed in 87% of cases. Early complications after stent placement occurred in 29.9% of cases. These included stent migration (4.3%), stent obstruction (6. 1%), aspiration pneumonia (4.9%), bleeding (4.3%), perforation (1. 8%), and pain (15.9%). Late complications occurred in 27.8% of cases. These included stent migration (2.6%), stent obstruction (9.6%), aspiration pneumonia (2.6%), bleeding (7.0%), perforation (0.9%), and pain (12.2%). The 30-day mortality was 26%. Death related to stent placement occurred in 3.3%. CONCLUSION: Insertion of a Song expandable endoprosthesis in patients with esophagogastric malignancies significantly improves dysphagia, is successful in sealing fistulas/perforations, and is associated with acceptable morbidity and mortality rates.

Aged↗
PubMed2000

Surveillance of Barrett's oesophagus: physicians' practices and review of current guidelines.

BACKGROUND: Endoscopic biopsy surveillance of Barrett's oesophagus is generally recommended. However, optimal patient selection and frequency of follow-up are subject to ongoing discussion. OBJECTIVE: To investigate current surveillance practices for Barrett's oesophagus in the Netherlands and to explore their concordance with the guidelines for Barrett's oesophagus surveillance as recommended by the International Society for Diseases of the Esophagus (ISDE). METHODS: An anonymous questionnaire was mailed to 269 specialist physicians working in the field of gastroenterology. RESULTS: The response rate was 88% (238/269). Most of the respondents (84%) performed regular endoscopic follow-up of Barrett's oesophagus. In 52%, endoscopic biopsy sampling corresponded to the ISDE guidelines (four-quadrant biopsies at 2 cm intervals). Agreement was 60% regarding the interval of surveillance for no dysplasia (every 2 years), 52% regarding the interval for low-grade dysplasia (every year) and 54% for management of high-grade dysplasia (oesophagectomy if diagnosis confirmed by a second pathologist or re-biopsy in the short term). When combining these three items, consistency with the ISDE guidelines decreased to 25%. Criteria to select patients for surveillance included age, presence of symptoms, length of Barrett's oesophagus and type of Barrett epithelium. CONCLUSIONS: The survey indicates widespread practice of cancer surveillance for patients with Barrett's oesophagus in the Netherlands. However, there is limited uniformity in the frequency and intensity of endoscopic histological follow-up. This variability in clinical practice may result from conflicting data and recommendations in the literature. Updated consensus is needed in this area.

Age Factors↗
PubMed1999

Validation of the Rockall risk scoring system in upper gastrointestinal bleeding.

BACKGROUND: Several scoring systems have been developed to predict the risk of rebleeding or death in patients with upper gastrointestinal bleeding (UGIB). These risk scoring systems have not been validated in a new patient population outside the clinical context of the original study. AIMS: To assess internal and external validity of a simple risk scoring system recently developed by Rockall and coworkers. METHODS: Calibration and discrimination were assessed as measures of validity of the scoring system. Internal validity was assessed using an independent, but similar patient sample studied by Rockall and coworkers, after developing the scoring system (Rockall's validation sample). External validity was assessed using patients admitted to several hospitals in Amsterdam (Vreeburg's validation sample). Calibration was evaluated by a chi2 goodness of fit test, and discrimination was evaluated by calculating the area under the receiver operating characteristic (ROC) curve. RESULTS: Calibration indicated a poor fit in both validation samples for the prediction of rebleeding (p<0.0001, Vreeburg; p=0.007, Rockall), but a better fit for the prediction of mortality in both validation samples (p=0.2, Vreeburg; p=0.3, Rockall). The areas under the ROC curves were rather low in both validation samples for the prediction of rebleeding (0.61, Vreeburg; 0.70, Rockall), but higher for the prediction of mortality (0.73, Vreeburg; 0.81, Rockall). CONCLUSIONS: The risk scoring system developed by Rockall and coworkers is a clinically useful scoring system for stratifying patients with acute UGIB into high and low risk categories for mortality. For the prediction of rebleeding, however, the performance of this scoring system was unsatisfactory.

Adolescent↗
PubMed1998

Cardiovascular responses, arterial oxygen saturation and plasma catecholamine concentration during upper gastrointestinal endoscopy using conscious sedation with midazolam or propofol.

Hypoventilation as a consequence of deep intravenous sedation is the most frequently reported cause of cardiac arrest during upper gastrointestinal endoscopy (UGIE). Haemodynamic stress can contribute to myocardial ischaemia; therefore, this study was designed to observe prospectively the cardiorespiratory changes during UGIE using either midazolam or propofol for conscious sedation. Thirty-four patients, aged 50 years and older, ASA physical status I-III, scheduled for elective UGIE with sedation, were studied. Oxygen saturation, heart rate, non-invasive blood pressure and Holter ECG were recorded continuously starting 15 min before sedation until 15 min after the endoscopy. In addition, plasma catecholamine concentrations were determined. The results of this study are consistent with previous reports that cardiopulmonary events may occur during endoscopy, with or without sedation. Both midazolam and propofol sedation may provide some protection against haemodynamic stress in response to insertion and manipulation of the endoscope, but sedation can also contribute to the occurrence of hypoxaemia.

Aged↗
PubMed1998

Predictors of health care utilization in patients with inflammatory bowel disease: a longitudinal study.

OBJECTIVES: To predict health care utilization in patients with inflammatory bowel disease (IBD). METHODS: The health care utilization of 222 consecutive IBD patients was studied twice over the course of one year. Utilization consisted of medical care, including visits to the gastroenterologist and the general practitioner, and non-medical care, including use of a psychotherapist, a dietitian or home care nurse in the last six months. Prior and concurrent socio-demographic, disease-related and psychosocial factors were measured and their association with patient health care utilization was determined. RESULTS: Poor quality of life, disease burden experienced and depression were significantly (P < 0.01) associated with more visits to both gastroenterologist and GP. Disease activity was found to be significantly correlated to gastroenterologist visits, while female gender was associated with GP visits. Other socio-demographic and disease-related factors were not related to medical care utilization. Results of regression analysis indicated that prior disease burden experienced, social functioning and female sex are the best predictors of physician visits a year later. Of the concurrent factors, the best predictors were disease activity, emotional and social functioning, and disease burden experienced. Psychotherapy and home care were significantly correlated (P < 0.01) with co-morbidity, disease activity, quality of life and depression. Non-medical care utilization was not related to the majority of sociodemographic factors. CONCLUSION: Psychosocial factors, such as poor quality of life and disease burden experienced, are important predictors of health care utilization in IBD patients. Addressing these problems should not only increase the patient's quality of life, but also minimize health care utilization.

Adult↗
PubMed1997

Acute upper gastrointestinal bleeding in the Amsterdam area: incidence, diagnosis, and clinical outcome.

OBJECTIVES: In the United States of America and the United Kingdom several epidemiological upper gastrointestinal bleeding (UGIB) surveys have been done. However, information about the current epidemiology of acute UGIB in continental Western Europe is sparse. METHODS: From July of 1993 to July of 1994, 951 patients with acute UGIB were prospectively included in 12 hospitals in the Amsterdam area. Data were collected prospectively with a standard questionnaire and included demographic as well as specific data relating to UGIB. RESULTS: The overall incidence was 45 per 100,000 persons/yr. Patients had an advanced age (median, 71 yr), and shock was found in 63%. Coexisting illnesses were present in 85%. Twenty percent had a history of previous ulcer disease, of whom 33% used acid suppressive therapy. Endoscopy was performed within 24 h in 78%, and in 42% a gastroduodenal ulcer was found. In 24%, no diagnosis could be made at the initial endoscopy, in these patients endoscopy was done significantly later than in those in whom a diagnosis was readily made. Rebleeding occurred in 16.4%, and 7% had surgery. Mortality rate was 13.9%, which was considered in one-third to be directly related to the bleeding. CONCLUSIONS: The incidence and diagnostic profile of UGIB is similar to other large European studies, but different from those for the United States. Bleeding could perhaps have been prevented in the patients with a history of previous ulcer disease. The 24-h endoscopy service was not as fast, accurate, and widespread as we assumed. Mortality seems to be more related to advanced age, shock, and coexisting illnesses.

Acute Disease↗
PubMed1996

Human immunodeficiency virus type 1 RNA populations in faeces with higher homology to intestinal populations than to blood populations.

To determine whether human immunodeficiency virus type 1 (HIV-1) in faeces is representative of the HIV-1 population in intestinal tissue, we studied HIV-1 V3 variation in faeces, intestinal biopsies and serum from two individuals. Phylogenic analysis of HIV-1 V3-coding RNA in faeces from one individual showed three distinct genotypes. Viruses belonging to all three genotypes were also present in sigmoidal tissue and in serum. Jejunal tissue contained two of these three genotypes. Analysis of the V3-coding RNA in faeces of the other individual showed five distinct genotypes. One of these genotypes was present in all specimens from this individual. Besides this shared genotype, jejunal tissue and serum contained sequences belonging to one other genotype. In addition, one of the other three V3 variants was detected in sigmoidal tissue. For both persons the shared HIV-1 RNA genotypes in faeces and serum displayed a distinctly different frequency distribution. In one individual, the genotype which was detected in a majority of the clones in faeces (59%) and as a minority in serum (11%), was the most abundant genotype in jejunal and sigmoidal tissue (61% and 80%, respectively). For the other individual the genotype that was present in faeces in a significant number of clones (43%) was detected in serum as a minority (8%), whereas this genotype composed 47% of the clones isolated from jejunal tissue. Taken together these data suggest that faeces contain HIV-1 sequences that are derived from local HIV-1 replication in intestinal tissue.

Amino Acid Sequence↗
PubMed1996

Intermittent continuous infusion of 5-fluorouracil in combination with epirubicin and cisplatin in advanced gastric cancer: the importance of dose intensity.

BACKGROUND: Recently, high response rates have been reported in patients with advanced gastric cancer with a schedule of epirubicin, cisplatin, and protracted infusion of 5-fluorouracil (5-FU). We modified this schedule based on the assumption that shorter treatment intervals are more convenient for patients and that cytokinetically based data showed that most gastric cancers have a relatively short potential doubling time of of less than 14 days. PATIENTS AND METHODS: Fourteen patients with advanced gastric adenocarcinoma with progressive, measurable disease entered the study. Patients were treated from days 1 to 14 with 5-FU 200 mg/m2 per day as a continuous infusion using a portable infusion pump. Epirubicin 50 mg/m2 and cisplatin 60 mg/m2 were administered on day 1. Courses were repeated every 4 weeks. RESULTS: No responses were observed (response rate 0% [95% CI 0-23%]). Toxicity was mild. Grade 3 toxicity occurred in only 2 patients (14%). The median progression free survival was 3.5 months (range 2 to 17). The median survival was 6.5 months (range 2 to 31+). CONCLUSIONS: The unexpected results of this study are most likely due to a diminished dose intensity. When comparing the results of several schedules with epirubicin, cisplatin, and 5-FU, it seems that the dose intensity for all three drugs may be important, but especially for 5-FU.

Adenocarcinoma↗
PubMed1995

Local excision and mucosal advancement for anorectal ulceration in patients infected with human immunodeficiency virus.

In patients infected with human immunodeficiency virus (HIV) no effective surgical procedure has been described for anorectal ulceration that is resistant to medical therapy. This study was designed to determine the effectiveness of surgical excision of anorectal ulcers, with or without mucosal advancement. The medical records of patients with HIV and anorectal pathology diagnosed between 1984 and 1994 were reviewed. Patients with anorectal ulcers were divided into group A which was treated only with excision and group B in which excision was combined with mucosal advancement. Surgical treatment was considered successful if relief of symptoms was achieved within 4 weeks of the operation. Excision of anorectal ulcers was successful in seven of 16 patients (44 per cent) in group A. Relief of symptoms was achieved in 12 of 13 patients (92 per cent) in group B when surgical excision was combined with mucosal advancement, which is significantly better than the results in group A (P = 0.02). This non-randomized study indicates that after unsuccessful medical treatment persistent symptomatic ulcers should be treated operatively by excision with mucosal advancement.

AIDS-Related Opportunistic Infections↗
PubMed1995

Inflammatory Bowel Disease Questionnaire: cross-cultural adaptation and further validation.

OBJECTIVES: The Inflammatory Bowel Disease Questionnaire (IBDQ) is a disease-specific quality of life instrument. We translated and adapted the questionnaire and tested its reliability and (cross-cultural) validity. METHODS: We surveyed 271 patients with inflammatory bowel disease. The inflammatory Bowel Disease Questionnaire and its dimensional scores (bowel, systemic, social and emotional) were correlated with disease activity, health care use, medication and three other indices of quality of life. RESULTS: The reliability coefficient of the Inflammatory Bowel Disease Questionnaire was high (0.93). Patients with higher disease activity had significantly lower quality of life on all Inflammatory Bowel Disease Questionnaire dimensions (P < 0.001). Inflammatory Bowel Disease Questionnaire scores were significantly correlated with health care use (P < 0.01) but not with medication. Almost all Inflammatory Bowel Disease Questionnaire dimensions correlated highly (0.43-0.79, P < 0.001) with the corresponding scales of the standard quality of life indices, except for the bowel dimension. Modified Dutch Inflammatory Bowel Disease Questionnaire scores were consistent with Canadian Inflammatory Bowel Disease Questionnaire norms. CONCLUSIONS: These results support the Inflammatory Bowel Disease Questionnaire as a reliable and valid measure of the quality of life of inflammatory bowel disease patients in multicultural research settings.

Adaptation, Psychological↗