Biomedical subjects

T Bammer

Publications and source records attributed to T Bammer.

32 records · Page 2Linked to original sources

PubMed2000

Quality of life and surgical outcome after laparoscopic Nissen and Toupet fundoplication: one-year follow-up.

BACKGROUND AND STUDY AIMS: Quality of life data are becoming widely accepted as a measure of surgical outcome, but the multifaceted symptoms in patients with gastrointestinal disorders are a challenge for this type of evaluation. The aim of the present study was to determine any potential differences in quality of life, specifically in patients undergoing either laparoscopic "floppy" Nissen fundoplication or Toupet fundoplication. PATIENTS AND METHODS: Using the Gastrointestinal Quality of Life Index (GIQLI), the quality of life data for 175 consecutive patients undergoing laparoscopic "floppy" Nissen (n=107) or Toupet (n=68) fundoplication at our department of surgery over a period of 30 months were evaluated prospectively. The patients included 97 men and 78 women, with a mean age of 52 years. The GIQLI creates a general score for quality of life by classifying five different subscales: gastrointestinal symptoms, emotional status, physical and social functions, and stress of medical treatment. This questionnaire was given to the patients preoperatively, and on three occasions after surgery -- at six weeks, three months, and one year. RESULTS: The analysis showed that the patients had a low GIQLI preoperatively in comparison with healthy individuals (mean 90.4 vs. 122.6 points), with all subscales being affected. The general score improved significantly six weeks postoperatively (mean: 118.2 points; P<0.05), showed further improvement at three months (mean: 124.2 points), and remained stable at one year (mean: 123.1 points; P<0.01) postoperatively. There were no differences in the quality of life or side effects between patients with a Nissen or Toupet fundoplication, except regarding the frequency of mild, transient dysphagia. CONCLUSIONS: Patients with gastroesophageal reflux disease suffer from a poor quality of life. After laparoscopic fundoplication, the quality of life improves and becomes comparable to that of healthy individuals. In our view, quality of life data should be evaluated as a major factor in determining the role of surgical interventions. Patients should receive consultation and advice regarding quality of life questions prior to surgery.

Female↗

PubMed2000

Predictability of dysphagia after laparoscopic nissen fundoplication.

OBJECTIVE: Dysphagia is the most common complication of antireflux surgery. Temporary dysphagia occurs in addition to persistent dysphagia because of technical or physiological problems. Temporary dysphagia may be due to the patient's personal perception or faulty eating habits. The aim of this study was to investigate the impact of the patient's personality as it relates to temporary dysphagia and individual impairment. METHODS: Several studies have used the construct of personality known as "health locus of control" to predict health-related behavior and convalescence after medical or surgical treatments. This study investigates the predictability of the subjective degree of dysphagia and its perceived degree of impairment in relation to the health locus of control after laparoscopic so-called "floppy" Nissen fundoplication in 90 patients. Several questionnaires and single-item questions were given to the patients preoperatively, and 1 wk, 6 wk, and 3 months after surgery. The answers to the questions provided the data for this study. RESULTS: Preoperatively, 92% of the patients had no dysphagia and 8% had a mild subjective degree of dysphagia. Temporary postoperative dysphagia was found in approximately 50% of the patients 1 wk after surgery. The intensity of the dysphagia ranged among mild (18%), moderate (15%), and severe (16%). Three months postoperatively about 80% had no dysphagia and only 2% severe dysphagia. Correlations between the construct of personality and the intensity of postoperative dysphagia and its impairment revealed a significant relationship at all times. Patients with high expectations for their own health-related abilities (internal control) had less dysphagia (r = -0.78 after 1 wk [p<0.001], r = -0.71 after 6 wk [p<0.001], and r = -0.64 after 3 months [p<0.001]), compared with patients who believed that their convalescence depended more on luck, chance, or fate (external control) (r = 0.67 after 1 wk [p<0.01], r = 0.72 after 6 wk [p<0.001], and r = 0.63 after 3 months [p<0.01]). These results are highly significant. The correlation between health locus of control the degree of a subjective impairment from perceived dysphagia showed similar results (p<0.01). CONCLUSIONS: The subjective degree of dysphagia and the perceived impairment as a result of laparoscopic antireflux surgery can be predicted according to the personality of the patient. Those patients with low expectations for their own abilities can be identified before surgery, thereby allowing adaptation techniques to be applied that could improve the results and well-being of patients after antireflux surgery.

Attitude↗

PubMed1999

Is laparoscopic reoperation for failed antireflux surgery feasible?

HYPOTHESIS: Laparoscopic techniques can be used to treat patients whose antireflux surgery has failed. DESIGN: Case series. SETTING: Two academic medical centers. PATIENTS: Forty-six consecutive patients, of whom 21 were male and 25 were female (mean age, 55.6 years; range, 15-80 years). Previous antireflux procedures were laparoscopic (21 patients), laparotomy (21 patients), thoracotomy (3 patients), and thoracoscopy (1 patient). MAIN OUTCOME MEASURES: The cause of failure, operative and postoperative morbidity, and the level of follow-up satisfaction were determined for all patients. RESULTS: The causes of failure were hiatal herniation (31 patients [67%]), fundoplication breakdown (20 patients [43%]), fundoplication slippage (9 patients [20%]), tight fundoplication (5 patients [11%]), misdiagnosed achalasia (2 patients [4%]), and displaced Angelchik prosthesis (2 patients [4%]). Twenty-two patients (48%) had more than 1 cause. Laparoscopic reoperative procedures were Nissen fundoplication (n = 22), Toupet fundoplication (n = 13), paraesophageal hernia repair (n = 4), Dor procedure (n = 2), Angelchik prosthesis removal (n = 2), Heller myotomy (n = 2), and the takedown of a wrap (n = 1). In addition, 18 patients required crural repair and 13 required paraesophageal hernia repair. The mean +/- SEM duration of surgery was 3.5+/-1.1 hours. Operative complications were fundus tear (n = 8), significant bleeding (n = 4), bougie perforation (n = 1), small bowel enterotomy (n = 1), and tension pneumothorax (n = 1). The conversion rate (from laparoscopic to an open procedure) was 20% overall (9 patients) but 0% in the last 10 patients. Mortality was 0%. The mean +/- SEM hospital stay was 2.3+/-0.9 days for operations completed laparoscopically. Follow-up was possible in 35 patients (76%) at 17.2+/-11.8 months. The well-being score (1 best; 10, worst) was 8.6+/-2.1 before and 2.9+/-2.4 after surgery (P<.001). Thirty-one (89%) of 35 patients were satisfied with their decision to have reoperation. CONCLUSIONS: Antireflux surgery failures are most commonly associated with hiatal herniation, followed by the breakdown of the fundoplication. The laparoscopic approach may be used successfully to treat patients with failed antireflux operations. Good results were achieved despite the technical difficulty of the procedures.

Adolescent↗

PubMed1999

Laparoscopic refundoplications after failed antireflux surgery.

BACKGROUND: Open and laparoscopic antireflux procedures may require reoperation for failures of the initial procedure in about 3% to 6% of cases. The purpose of this study is to describe our operative experiences, postoperative results, and patients' view of outcome following laparoscopic refundoplication. METHODS: Thirty patients (18 men, 12 women), mean age 56 years (range 37 to 77) underwent laparoscopic redo surgery. In 18 patients the initial surgery was done by the open technique, and 3 had surgery twice previously. Twelve patients had previous laparoscopic antireflux surgery. Indications for redo surgery were recurrent reflux (n = 17), dysphagia (n = 6), and the combination of both (n = 7). RESULTS: Twenty-eight patients were completed laparoscopically, 21 with a floppy Nissen and 7 with a Toupet fundoplication. Two patients were converted to the open procedure because of intraoperative technical problems. In 5 cases there was an injury to the stomach wall, successfully managed laparoscopically. Postoperatively 1 patient had dysphagia and required pneumatic dilatation, another had gas bloat. There was a significant increase in lower esophageal sphincter pressure at 3 months (12.4+/-4.8 mm Hg; n = 30) and 1 year (12.3+/-4.5 mm Hg; n = 30). Twenty-four hour pH monitoring showed a decrease of the DeMeester Score at 3 months after surgery from 14.7+/-10.6 (n = 30) and 1 year after surgery from 12.1+/-8.7 (n = 30). Gastrointestinal quality of life index increased from 87 points preoperatively to 121 at 3 months and 123 at 1 year, which is comparable with a healthy population (123 points). CONCLUSIONS: Laparoscopic refundoplication is a feasible and effective procedure with excellent postoperative results, independent of whether the primary procedure was done by the open or laparoscopic technique.

Esophagogastric Junction↗

PubMed1999

Antireflux surgery. Indications, preoperative evaluation, and outcome.

Gastroesophageal reflux disease (GERD) is an extremely common disorder. Many patients require lifelong medical therapy for symptom control. In patients being considered for antireflux surgery, thorough evaluation is required. Laparoscopic antireflux surgery is a safe and effective method of treating patients who have severe, refractory, or complicated GERD. Excellent long-term results are obtained with minimal morbidity, freeing the patient from the burden of chronic medical therapy.

Gastroesophageal Reflux↗

PubMed1999

Treatment of achalasia: recent advances in surgery.

Achalasia is an uncommon motility disorder of the esophagus with an uncertain etiology. Considerable debate exists regarding the most effective treatment for long-term relief of symptoms. For decades, pneumatic dilatation has been the primary treatment option, and surgery was reserved for patients who required repeated dilations or for those who were not willing to undergo the risk of perforation associated with dilatation. Recently botulinum toxin injection of the lower esophageal sphincter has been shown to provide substantial short-term relief from dysphagia; however, its effect only lasts for a short period of time. Recently, minimally invasive surgical techniques have been developed to perform a Heller myotomy effectively with an antireflux procedure. This has become a primary treatment option for many patients. We present a review of the outcome of different therapeutic options of achalasia with a special focus on laparoscopic procedures.

Anti-Dyskinesia Agents↗

PubMed1999

Minimally invasive surgical techniques for the treatment of gastroesophageal reflux disease.

Open antireflux surgery produces good long-term control of disease, but new interest in the surgical management of gastroesophageal reflux disease has been stimulated by the introduction of minimally invasive techniques to perform standard antireflux procedures. In the past some scepticism existed among gastroenterologists who quoted the poor surgical results they had seen. These bad results, however, were largely due to inappropriate surgery in poorly worked-up patients or antireflux surgery performed by inexperienced surgeons. Since the introduction of minimally invasive surgery for gastroesophageal reflux disease, excellent results have been reported with over 5 years of follow-up. The most common and successfully used laparoscopically antireflux procedures are reviewed and results analyzed.

Algorithms↗

PubMed1999

[Coping with stress and personality structure in patients with and without stress-associated symptoms of gastroesophageal reflux].

BACKGROUND: Psychological aspects like stress, emotions or personality are known to affect the severity of symptoms of gastroesophageal reflux disease (GERD). The aim of the present study was to evaluate differences in coping with stress, structure of personality and also objective and subjective parameters of patients with or without a stress-related perception of symptoms in GERD. METHODS: 100 patients which underwent laparoscopic antireflux surgery at our department of surgery were included in this study. All patients answered questionnaires to evaluate their coping with stress (SVF), structure of personality (FPI-R) and quality of life (GILQI) pre- and postoperatively. Also data of physiological parameters like manometry, 24-hours pH monitoring, endoscopy and clinical history were included. Patients were divided into two groups: one with and one without a stress-related perception of symptoms. RESULTS: 46 out of 100 patients declared stress-related symptoms of reflux (group 1) and 54 out of 100 had no influence of stress to their reflux disease (group two). Those two groups showed significant differences (p < .05) in some coping strategies and their personality: Coping with stress (SVF): Trial to control the situations (18.3 vs. 13.1), trial to control reactions (18.2 vs. 13.3), requirement of social support (9.7 vs. 14.8), tendency to escape (7.7 vs. 13.9) and aggression (13.1 vs. 7.6); structure of personality (FPI-R): Standard of performance (10.8 vs. 7.2), stress (9.8 vs. 4.7) and physical discomfort (7.6 vs. 4.6). We also found significant (p < .05) differences in pre- and postoperative quality of life (GILQI: preoperative 86.3 vs. 98.5 points; postoperative 117.9 vs. 128.2 points) and the day-time of reflux perception. There were no differences in physiological parameters. CONCLUSION: These findings point out that there are no physiological differences between the two groups with or without stress-related symptoms in GERD. But we found significant differences in psychological factors. Therefore we suggest that preoperative psychological interventions may optimize the subjective outcome after antireflux surgery in patients with a stress-related perception of symptoms.

Adaptation, Psychological↗

PubMed1998

[Quality of life after laparoscopic antireflux surgery--Nissen fundoplication].

PURPOSE: During the last few years there has been an increasing interest in evaluating quality of life (QOL) data regarding surgical treatment. METHODS: The present study comments the efficacy of laparoscopic antireflux surgery after required Nissen fundoplication of 70 patients. Therefore, the German Gastrointestinal Quality of Life Index (GIQLI) was used to query the patients preoperatively and three times after surgery up to 1 year. RESULTS: Preoperatively, we found a low general GIQLI score (mean 92.7 points), which increased 6 weeks postoperatively (116.8 points), 3 months (124.8) and 1 year (mean 123.9 points) significantly and is now comparable to the healthy population (122.6 points). CONCLUSION: It is our opinion that the efficacy of the treatment of gastroesophageal reflux disease with required Nissen fundoplication can also be documented and discussed by using QOL.

Adult↗

PubMed1997

Respiratory symptoms in patients with gastroesophageal reflux disease following medical therapy and following antireflux surgery.

BACKGROUND: It is not known whether antireflux surgery is more effective than medical therapy to control respiratory symptoms (RS) in gastroesophageal reflux disease (GERD). METHODS: In 21 GERD patients with RS, reflux was assessed by endoscopy, manometry, and pH monitoring. Patients had proton pump inhibitor therapy and cisapride for 6 months. After GERD relapsed following withdrawal of medical therapy, 7 patients with normal esophageal peristalsis had a laparoscopic Nissen fundoplication and 14 with impaired peristalsis a Toupet fundoplication. Respiratory symptoms were scored prior to treatment, at 6 months following medical therapy, and at 6 months after surgery. RESULTS: Heartburn and esophagitis were effectively treated by medical and surgical therapy. Only surgery improved regurgitation. Respiratory symptoms improved in 18 patients (85.7%) following surgery and in only 3 patients (14.3%) following medical therapy (P <0.05). Esophageal peristalsis improved following the Toupet fundoplication. CONCLUSION: Medical therapy fails to control reflux since it does not inhibit regurgitation. Surgery controls reflux and improves esophageal peristalsis, which contributes to its superiority over medical therapy in the treatment of RS associated with GERD.

Adult↗

PubMed1996

In vitro stimulation of erythropoiesis by stem cell factor alone in myelodysplastic syndrome patients with elevated endogenous erythropoietin serum levels.

Anemia remains a therapeutic problem in patients with myelodysplastic syndrome (MDS). In view of the recently reported potential of stem cell factor (SCF) in restoring erythropoiesis in combination with erythropoietin (Epo), we first aimed to define a correlation between SCF serum levels and anemia in MDS. Endogenous SCF levels in 50 MDS patients were determined by using a quantitative sandwich enzyme immunoassay. Broad interindividual variations were observed, but SCF serum levels were in the normal range with no correlation to peripheral blood count. A soft agar culture system was used to further define the role of SCF for stimulation of erythroid growth. Bone marrow mononucleated cells of 20 MDS patients (4 refractory anemia, 5 refractory anemia with excess of blasts, 7 refractory anemia with excess of blasts in transition, and 4 chronic myelomonocytic leukemia) were investigated, and SCF plus Epo was able to stimulate burst-forming unit-erythroid significantly more than SCF or Epo alone independent of French-American-British group. When mononucleated cells from six MDS patients (two refractory anemia, two refractory anemia with excess of blasts, and 2 refractory anemia with excess of blasts in transition) with elevated serum Epo levels were incubated in the presence of SCF and autologous serum, a significant dose-dependent stimulation of burst-forming unit-erythroid number and cells per colony was detected. Erythroid differentiation was further enhanced by adding serum with high colony-stimulating activity obtained from patients with severe aplastic anemia. Our data suggest that in MDS patients with high endogenous Epo serum levels SCF alone might be effective in stimulating erythropoiesis in vivo.

Adult↗

PubMed1994

Immunohistochemical metallothionein expression in colorectal adenocarcinoma: correlation with tumour stage and patient survival.

Metallothioneins (MTs), a set of ubiquitous low-molecular-weight proteins essential for the protection of cells against heavy metal ion toxicity, were demonstrated immunohistochemically using a monoclonal antibody (E9) against a conserved epitope of I and II isoforms in a series of 109 colorectal adenocarcinomas. In a semiquantitative analysis strong MT expression in the majority of tumour cells was observed in 34 (31%) cases, 24 (22%) tumours showed a focal MT positivity, and 51 (47%) almost completely lacked MT expression. These differences in MT expression were statistically significantly (P < 0.05) associated with the tumour stage (Dukes classification) and the lymph node involvement at the time of operation (pN stages). However, in contrast to previous findings obtained on a variety of tumours, MT positivity was associated with a favourable clinical outcome in colonic carcinoma, which may indicate their different biological behaviour. Survival curves of cases with MT-positive and MT-negative status differed from each other in a univariate analysis (Mantel-Haenszel: 8.9, P < 0.05) but lost significance when a multivariate analysis was carried out by means of the Cox proportional regression model with Dukes' stages as a stratification factor. It is concluded that immunohistochemically demonstrated MT expression is significantly associated with tumour stages but does not represent an independent prognostic variable in colorectal cancer. However, it may provide important information about some of the biological mechanisms underlying progression in colorectal cancer.

Adenocarcinoma↗

PubMed1993

Recombinant human interleukin-8 restores function in neutrophils from patients with myelodysplastic syndromes without stimulating myeloid progenitor cells.

Prognosis in myelodysplastic syndrome (MDS) is not only correlated closely with blast cell count in bone marrow and chromosomal abnormalities but also correlated with decreased leucocyte count and function leading to acquisition of lethal infections. Recently, clinical trials in MDS have focused on the application of haemopoietic growth factors such as G-CSF or GM-CSF, which have proven to increase neutrophil count and function. However, these cytokines carry the risk of stimulating the malignant clone, particularly in patients with increased blast cell count. Therefore, investigation of cytokines which are able to stimulate neutrophil function without the potential risk of stimulating haemopoietic progenitor cells may be relevant for MDS. As the stimulatory effect of interleukin-8 on neutrophil function is well known, we investigated whether recombinant human IL-8 is also able to improve the function of neutrophils gained from patients with MDS. Using three different techniques--the E. coli killing assay (8 patients), the production of reactive oxygen as determined by cytochrome c reduction (7 patients) and chemiluminescence (8 patients)--a significant stimulation of neutrophil function at a concentration of 10 nm IL-8 was found in all test systems. No correlation with FAB classification was evident. On the other hand, IL-8 only mildly stimulated growth of myeloid progenitor cells in bone marrow culture of healthy individuals and MDS patients. This minimal stimulation was blocked by a neutralizing antibody directed against GM-CSF, suggesting an indirect effect of IL-8 via secondary GM-CSF release. Thus, IL-8 is able in vitro to repair the functional abnormalities of neutrophils from patients with MDS but has only a marginal influence on myeloid progenitor cells.

Blood Bactericidal Activity↗

PubMedDate not supplied

Five- to eight-year outcome of the first laparoscopic Nissen fundoplications.

The operative mortality and morbidity of laparoscopic fundoplication are lower than for the open procedure. Questions have been raised regarding its long-term durability. One hundred seventy-one patients who had undergone laparoscopic Nissen fundoplication at least 5 years previously answered a questionnaire. During this period, 291 patients underwent a laparoscopic Nissen fundoplication. Surveillance data were available for 171 patients at a mean of 6.4 years after surgery. Overall, 96.5% were satisfied and 3.5% were not satisfied with the result of the procedure. Persistent symptoms included abdominal bloating (20.5%), diarrhea (12.3%), regurgitation (6.4%), heartburn (5.8%) and chest pain (4.1%); 27.5% reported dysphagia, and 7% had required dilatation. Fourteen percent were on continuous proton pump inhibitor therapy, but 79% of these patients were treated for vague abdominal or chest symptoms unrelated to reflux, which calls into question the indications for this therapy. Ninety-three percent of all patients were satisfied with their decision to have surgery. The overall well-being score increased significantly from 2.2 +/- 1.6 before surgery to 8.8 +/- 2 (P > 0.0001) at more than 5 years after surgery. Twenty-one percent had undergone additional diagnostic procedures after surgery such as endoscopy and/or barium swallow. Laparoscopic Nissen fundoplication is an excellent long-term treatment for gastroesophageal reflux disease with persistent success for more than 5 years. Some patients have continuing symptoms and remain on therapy, but more than 90% of all patients undergoing laparoscopic Nissen fundoplication remain satisfied with their decision to have surgery. These results are at least as good as those achieved with open fundoplication and prove the long-term worth of this procedure.

Aged↗