The prognostic impact of successful cardioversion of atrial fibrillation in patients with organic heart disease

The aim of the study was to evaluate the prognostic impact of successful cardioversion (CV) compared to failed CV in patients with atrial fibrillation (AF) and organic heart disease. A total of 471 consecutive patients with organic heart disease from the prospective single center anticoagulation registry ANTIK who underwent CV of AF or atrial flutter were analyzed. 417 patients (89%) could be successfully cardioverted. In 54 patients (11%) CV failed, these patients remained in AF. After 5 years there were 92 (24%) deaths among patients with restored sinus rhythm at index admission and 20 (38%) deaths among those who remained in AF after CV (unadjusted OR 1.9, 95% CI 1.1-3.6). After adjustment for age, gender and ejection fraction, successful CV was not associated with a beneficial effect on mortality (OR 0.72, 95% CI 0.43-1.21). Thus, successful CV is not an independent predictor of mortality on multivariate analysis. However, it remains a marker for a better prognosis in patients with organic heart disease as these patients have a lower unadjusted longterm mortality.

Rauchfreie Gaststätten

BACKGROUND AND OBJECTIVE

Every year over 3,300 non-smokers in Germany die from diseases caused by passive smoking. It was the aim of this study to obtain country-wide representative opinions about a smoking ban in restaurants.

MATERIAL AND METHODS

Data were obtained from a cross-sectional sample of the population, 2,008 men and women aged 16 years or over. Opinions on smoking ban in restaurants were analysed by bivariate and multivariate methods with regard to potential influencing factors such as smoking status and socio-demographic status.

RESULTS

The majority of those questioned, namely 50% (95% confidence interval 57-61), wished for a smoking ban in restaurants. This represents an increase of 6% compared with the preceding year. While over 82% of never-smokers and 71% of previous smokers were in favor of a smoking ban, agreement for a ban among smokers averaged 25%, depending on the amount smoked. Agreement was especially common among women, the elderly and married persons. Three of four Germans said that they would continue to go to restaurants as frequently after smoking had been banned there.

CONCLUSION

This is the first scientific study of opinions among the population on the smoking ban in restaurants of Germany. The current average approval rate for a ban was comparable to that among other nations. An overwhelming majority of the population would welcome a smoking ban and would, after its introduction, visit restaurants as often as previously.

„Sind Reiche gesünder?”

BACKGROUND AND OBJECTIVE

The aim of this study was to determine representative nationwide data on differences in the prevalence of specific diseases between socioeconomic groups.

METHODS

The "First National Health Survey for the Federal Republic of Germany" was conducted from October 1997 to March 1999 in the form of a standardized cross-sectional questionnaire study. The data were elicited about the 35 most common diseases and socioeconomic status. The net sample was made up of a total of 7125 persons aged 18 to 79.

RESULTS

A significantly higher prevalence in subjects of lower socioeconomic status was identified for typical orthopaedic diseases as well as for hypertension, chronic bronchitis, gastric and vascular disease. The most apparent socioeconomic difference to the detriment of socially deprived subjects was identified for addiction disease and diabetes. In contrast, numerous allergic diseases such as food allergies, urticaria, and allergic diseases of the respiratory tract and eyes were approximately twice as common among members of higher socioeconomic groups. Various gastrointestinal and renal diseases (hepatitis, gastritis, pyelonephritis) were also more common in higher socioeconomic groups. These socioeconomic differences were still apparent after adjustment for age and gender.

CONCLUSION

This study provides representative socioeconomic group-specific prevalence data on a total of 35 clinical entities for the Federal Republic of Germany. Although the self-reporting involved in large epidemiological studies of this kind is associated with a certain amount of bias, it is nonetheless clear that the frequently cited "socioeconomic gradient", i. e., a higher disease prevalence among lower socioeconomic groups, seems not to apply for numerous disease entities; for which the association seems to be in the opposite direction. This phenomenon requires explanation.

A prospective multicentre study on the safety of long-term intensive plasmapheresis in donors (SIPLA)

BACKGROUND AND OBJECTIVES

The safety of chronic intensive donor plasmapheresis has not been determined in large prospective studies examining dropout rates, dropout reasons and predictors of withdrawals.

MATERIALS AND METHODS

Twenty-one plasma centres recruited 3783 donors who were switched from a moderate to an intensive plasmapheresis programme and observed over a 3-year period. Individuals weighing < 70 kg and > or = 70 kg donated 750 ml and 850 ml of plasma per session, respectively. The maximum of annual donations was limited to 60. Total serum protein (TSP) and haemoglobin (Hb) or haematocrit (Hct) were determined at each donation, and immunoglobulin G (IgG) at every fifth donation. Dropout rates, dropout reasons and potential predictors of withdrawal were analysed.

RESULTS

Dropouts were predominantly due to socioeconomic (49.2% of all donors) or medical reasons not related to plasma donations (10.4% of all donors). Sixteen per cent of donors dropped out when IgG, TSP or Hb levels fell below threshold values. Severe clinical adverse events related to plasmapheresis were observed in five subjects. The incidence in severe cardiovascular diseases was lower in donors than in the general population. The risk factors that led to dropping out as a result of low IgG, TSP or Hb levels included younger age, female gender, low initial IgG levels and a high donation frequency. Neither body weight nor the amounts of plasma donated per kilogram of body weight per session were associated with ceasing due to medical reasons, whether related or unrelated to plasma donations. Females and males within the respective lowest body weight category were not at higher risk of dropping out.

CONCLUSION

Long-term intensive donor plasmapheresis under conditions investigated in this study is safe. All donors weighing > or = 70 kg are safely able to donate 850 ml of plasma in each session up to 60 times per year, provided that they are carefully monitored.

Prevalence and correlates of inflammatory arthritis in Germany: data from the First National Health Survey

The aim of this paper is to generate data on the prevalence of inflammatory arthritis in different subgroups of the population and to identify correlates on the basis of population-based cross-sectional data: the "First National Health Survey of the Federal Republic of Germany". This Survey investigated the prevalence of inflammatory arthritis, comorbidity and health-relevant behaviors on the basis of interviews with physicians and medical evaluations conducted in the period from October 1997 to March 1999. The study was based on a net sample comprising 6,461 subjects aged 18-79. Our data demonstrate an overall prevalence of 3.4% for inflammatory arthritis. The prevalence of inflammatory arthritis is significantly higher in women, the over-50, lower-income groups, and habitual smokers. Patients with inflammatory arthritis have a higher rate of numerous comorbidities such as osteoporosis, thyroid disease, chronic bronchial disease, hypertension, and elevated blood lipids versus healthy reference groups.

Performance diagnostics in handbiking during competition

STUDY DESIGN

Case study in handbiking under competition conditions.

OBJECTIVE

To investigate exercise-induced, metabolic, pulmonary, cardiovascular and energetic reactions of a paraplegic athlete during a city marathon.

SETTING

City marathon Cologne, Germany.

SUBJECT

We tested a 27-year-old male athlete from the German national team. The handicap of the athlete was a complete traumatic spinal cord injury ASIA/IMSOP Grade A at the level of the fourth thoratic vertebra (Th4).

METHOD

In the competition, the athlete used his own race handbike whose crank system had been exchanged for a power measurement system with registering option. For measuring ventilatory gas parameters during exercise, a portable spirometric system was used. The athlete managed to finish the marathon race in 1:48:54 h.

RESULTS

The mean oxygen uptake (VO2) during the marathon was 1580 ml/min, with a maximum value of 2535 ml/min. The mean heart frequency was 137 bpm with a maximum of 157 bpm. During the race the mean energy consumption was 463 kcal/h with a maximum of 758 kcal/h. Prior to the race, the blood lactate value was 2.9 mmol/l; after 10 km 4.4 mmol/l; after 20 km 2.9 mmol/l, and after 30 km 2.9 mmol/l.

CONCLUSION

Competition-oriented handbikers should concentrate on exercise units of long duration at low intensities--like marathon runners or cyclists--in order to improve their aerobic performance capacity. However, it has to be pointed out that paraplegic athletes develop relatively high metabolic intensities in competition and that the variability of their physiological parameters is considerably high.

Diffusion-weighted MR imaging lesions after filter-protected stenting of high-grade symptomatic carotid artery stenoses

BACKGROUND AND PURPOSE

The clinical efficacy of filter devices in internal carotid artery (ICA) stent placement has been a matter of controversy. The aim of this retrospective study was to assess the number and extent of cerebral emboli, as represented by new lesions on diffusion-weighted MR imaging (DWI), in patients treated with filter-protected carotid stent placement.

METHODS

Standard DWI (B0 = 1000) was performed within 48 hours before and 48 hours after filter-protected carotid stent placement in 50 patients with symptomatic, high grade (>70%), atherosclerotic ICA stenosis. Number, extent, and vascular territory of new DWI lesions after stent placement were assessed by consensus of 2 experienced neuroradiologists. Multifactorial statistical analysis was performed to determine risk factors associated with DWI lesions.

RESULTS

New punctate DWI lesions with a median diameter of 2 mm were detected in 14 of 50 cases in the territory of the stented ICA and in 7 of 50 cases in other vascular territories. Median lesion load was 1 lesion (range, 1-15) per positive case in the stented ICA and 1 lesion (range, 1-7) in other vascular territories. All DWI lesions were clinically asymptomatic. Because of 1 hyperperfusion syndrome with temporary brain swelling, the 30-day stroke and death rate was 2%. Age >or =70 years was the only significant predictor for new DWI lesions, whereas sex, degree and site of stenosis, vascular risk factors, and stent and filter type showed no significant correlation.

CONCLUSIONS

New DWI lesions after filter-protected carotid stent placement are substantially more frequent in the ipsilateral ICA territory compared with other vascular territories. Therefore, intraluminal filters cannot completely protect the brain from procedure-related embolization. However, individual lesion load and the risk of clinically relevant ischemia is low.

Incidence of rotator cuff tears in shoulder dislocations and results of therapy in older patients

INTRODUCTION

In older patients we documented the incidence of additional injuries in shoulder dislocations in a non-randomised, prospective study and compared the results of conservative and of operative therapy of rotator cuff tears.

MATERIAL AND METHODS

Between 1993 and 1999 a total of 87 patients were prospectively enrolled. In the case of documented tears of the rotator cuff in combination with symptoms persisting after conservative therapy patients were free to decide between surgical and conservative treatment. Patients were monitored for function, subjective stability, and satisfaction over a minimum follow-up period of 1 year.

RESULTS

In 54% of the patients enrolled a cuff tear was documented; the frequency increased with advancing age to 100% in patients over the age of 70. Surgical treatment of the cuff tears resulted in better function and satisfaction. There were three recurrences in the conservative treatment group, while no recurrences were documented in surgically treated patients. The significant benefit of cuff repair was confirmed by regression analysis.

CONCLUSION

In this selected patient group, we believe surgical repair of the symptomatic rotator cuff tear should be discussed with the patient.

Sports injuries: population based representative data on incidence, diagnosis, sequelae, and high risk groups

OBJECTIVE

To generate national representative data on the incidence, diagnosis, severity, and nature of medically treated sports injuries and to identify high risk groups.

METHODS

The first national health survey for the Federal Republic of Germany, conducted in the format of a standardised, written, cross sectional survey in the period October 1997 to March 1999, gathered data on the incidence of accident and injury and information on social demographics, injury related disability/time off work, and injury location/setting. The net sample comprised 7124 people aged 18-79.

RESULTS

3.1% of adult Germans said they sustained a sports injury during the previous year, corresponding to an annual injury rate of 5.6% among those engaging in regular recreational physical activity and ranking sports injuries as the second most common type of accident. About 62% of all sports injuries result in time taken off work. The period of occupational disability is 14 days or less in around two thirds of these cases. The occupational disability rate after occupational and traffic accidents is much higher by comparison. Dislocations, distortions, and/or torn ligaments make up 60% of all sports injuries, followed by fractures (18%), contusions, surface wounds, or open wounds (12%). Three out of four sports injury casualties are male. The incidence declines noticeably in higher age groups.

CONCLUSIONS

Future injury prevention measures should focus on the high risk group of young male recreational athletes. The data indicate that the fear of damage to health and injury, believed to be significant internal psychological barriers to participation in sports, is largely unwarranted for the female population and/or older age groups. Sporting injuries are a marginal phenomenon among the female population and mobile seniors actively engaged in sports.

Influence of the design of the prosthesis on the outcome after hemiarthroplasty of the shoulder in displaced fractures of the head of the humerus

We reviewed 39 patients with displaced three- and four-part fractures of the humerus. In 21 patients (group A) we had used an anatomical prosthesis for the humeral head and in 18 (group B) an implant designed for fractures.

When followed up at a mean of 29.3 months after surgery the overall Constant score was 51.9 points; in group A it was 51.5 and in group B 52.4 points. The subjective satisfaction of the patients was assessed using a numerical rating scale and was similar in both groups. In group A complete healing of the tuberosities was found in 29% and 50% in group B. Partial integration was seen in 29% of group A and in only one patient in group B, while resorption was noted in 43% of group A and 44% of group B. The functional outcome was significantly better in patients with complete or partial healing of the tuberosities (p = 0.022). The specific trauma prosthesis did not lead to better healing of the tuberosities. The difference in clinical outcome obtained by the two designs did not reach statistical significance.

[Garden I femoral neck fractures: conservative vs operative therapy]

INTRODUCTION

Treatment recommendations vary for Garden I fractures of the proximal femur. The aim of our retrospective study was to determine the results of functional treatment of these injuries.

MATERIAL AND METHODS

A total of 54 consecutive patients were enrolled, and their data (age, comorbidities, treatment, complications, etc.) were ascertained and stored in a database. Initial treatment consisted in early mobilization and weight bearing in all patients.

RESULTS

In 24 cases (44%) no complications at all were observed in the course of conservative treatment. In 28 cases (52%) surgical treatment was necessary due to early fracture dislocation. Analysis of the X-ray images showed that in 9 of these 28 cases the functional treatment had not been clearly indicated, i.e., incomplete impaction of the fragments. When these patients are excluded the success rate of conservative treatment was 53%, as two additional late complications occurred and were treated surgically (1x AVN, 1x nonunion). With reference to the survival rate, score, and patient satisfaction, there was no difference between conservative and operative treatment (p=0.478). The risk of a secondary dislocation increases with the number of risk factors (p=0.008).

DISCUSSION

An attempt at functional treatment with close X-ray monitoring is appropriate in these fractures, since this makes it possible to avoid surgery in about half of the patients while achieving functional results comparable to those yielded by surgery.

Preaching to the converted: Über- und Unterversorgung in der Schmerzprävention am Beispiel bundesdeutscher Rückenschulen

BACKGROUND

In response to the growing incidence of back pain, increasing emphasis is being placed on individualized preventive measures. The purpose of the present study was to investigate representative data for back pain, participation rates of back care programs, and their correlates in the German general population.

METHODS

The first National Health Survey was carried out in the Federal Republic of Germany in the period from October 1997 to March 1999. It comprised a representative, cross-sectional study of the population with a total sample of 6235 participants between the ages of 18 and 79.

RESULTS

The 7-day prevalence for back pain in Germany was found to be 36%, and 7% of all Germans had participated in a back care program within the past year. The 1-year participation rate was significantly lower in persons with higher risk for back pain (men, full-time workers, unmarried people, and those with an unhealthy lifestyle).

CONCLUSIONS

The user profile for back care programs indicates that genuine needs are not being met and the target group is not being reached. A "preaching to the converted" phenomenon is evident, as indicated by the fact that the user group is made up of individuals who already have a healthy lifestyle and few risks while the population group most likely to develop back pain is significantly less likely to participate in preventive back care programs.

Continuous passive motion versus immobilisation in a cast after surgical treatment of idiopathic club foot in infants

Continuous passive motion has been shown to be effective in the conservative treatment of idiopathic club foot. We wished to determine whether its use after operation could improve the results in resistant club feet which required an extensive soft-tissue release. There were 50 feet in the study. Posteromedial lateral release was performed in 39 feet but two were excluded due to early relapse. The mean age at surgery was eight months (5 to 12). Each foot was assigned a Dimeglio club foot score, which was used as a primary outcome measure, before operation and at 6, 12, 18 and 44 months after. Nineteen feet were randomly selected to receive continuous passive motion and 18 had standard immobilisation in a cast.

After surgery and subsequent immobilisation in a cast the Dimeglio club foot score improved from 10.3 before to 4.17 by 12 months and to 3.89 at 48 months. After operation followed by continuous passive motion the score improved from 9.68 before to 3.11 after 12 months, but deteriorated to 4.47 at 48 months. Analysis of variance adjusted for baseline values indicated a significantly better score in those having continuous passive motion up to one year after surgery, but after 18 and 48 months the outcomes were the same in both groups.

[Diagnostic and therapeutic recommendations for mucous membrane pemphigoid of the eye]

Mucous membrane pemphigoid (MMP) is often accompanied with a chronic cicatrizing conjunctivitis that may eventually lead to loss of vision. The study is intended to investigate the current scientific knowledge on the diagnosis of and therapy for MMP involving the eye. Previous studies published before December 2004 have been systematically reviewed for their level of evidence. Consequently, recommendations for patient management are provided.

Real-time 3-D dark-field microscopy for the validation of the cross-linking process of alginate microcapsules

Alginate-based microencapsulation is a promising method for long-term maintenance of cellular and membrane function of the cells and tissue fragments required for in vitro and in vivo biosensors, for tissue engineering and particularly for immunoisolation of non-autologous transplants. Microcapsules of high mechanical strength and optimum permeability can be produced by injection of BaCl2 crystals into alginate droplets before they come into contact with external Ba2+. A key requirement is that the system parameters (number of crystals, speed of the crystal stream etc.) are properly adjusted according to the mannuronic and guluronic acid ratio and the average molecular mass of the alginate as well as to the diameter of the microcapsules. Robust, reliable, rapid and low-cost validation tools are, therefore, needed for assurance of the microcapsule quality. Here, we describe a novel three-dimensional (3-D) dark-field microscopy that allows the real-time measurement of the number and spatial distribution of the injected Ba2+ ions throughout the microcapsules after treatment with sulphate. This novel method requires only a conventional microscope equipped with three polarising filters and a double aperture stop. In contrast to confocal laser scanning microscopy images, peripherally attached BaSO4 precipitates can clearly be distinguished from internal ones. The data also demonstrate that several steps of the alginate gelling process must be improved before such immunoisolation can be used in patients.