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PubMed1989

External cardiac programmed stimulation for noninvasive termination of sustained supraventricular and ventricular tachycardia.

To examine the feasibility of using a noninvasive temporary pacemaker for termination of well-tolerated supraventricular (SVT) and ventricular tachycardia (VT), a standard external demand pacemaker was modified to allow stimulation with single or multiple extrastimuli and overdrive pacing. To evaluate the efficacy, safety and tolerance of external cardiac programmed stimulation, a standard arrhythmia termination protocol was used in 223 tachycardias in 22 patients. The technique of external cardiac programmed stimulation was used in 209 episodes of SVT in 13 patients. It terminated 95% of the episodes with success in 19 of 20 episodes of atrioventricular nodal reentrant tachycardia and 179 of 189 episodes of atrioventricular reciprocating tachycardia. Of 198 episodes of SVT terminated by the technique 168 (85%) were terminated by a single extrastimulus and 28 (14%) by double extrastimuli. Only 2 episodes of SVT required overdrive pacing for termination. External cardiac programmed stimulation did not result in atrial fibrillation or arrhythmia acceleration. Of 14 episodes of sustained monomorphic VT 5 were terminated by external cardiac programmed stimulation. One tachycardia was terminated by a single extrastimulus, 1 by double extrastimuli and 3 by overdrive pacing. Arrhythmia acceleration occurred once and was terminated by endocardial pacing. On 27 separate occasions patient evaluation of maximal discomfort included 4 ratings of mild, 10 of moderate, 11 of severe and 2 of intolerable discomfort. External cardiac programmed stimulation is effective and safe in patients with well-tolerated sustained supraventricular or ventricular arrhythmias.

Adult↗

PubMed2005

Food 21: a research program looking for measures and tools to increase food chain sustainability.

Food 21, an interdisciplinary research program encompassing the whole agro-food chain, was conducted in Sweden during 1997-2004. The challenges undertaken were to come up with environmental tools and solutions to existing nonsustainable practices along the entire food chain. This required close collaboration between the scientists and the food chain stakeholders. A set of goals characterizing sustainable food production is presented in this paper. Synthesis and systems analysis were the main tools used to analyze the sustainability of proposed changes. In this introduction we give an overview of the Food 21 concept and highlight some results. For example, we found that organic farming and organic products were not in general superior to conventional products and practices with respect to environmental impact and product quality. We also summarize the management experiences in this article, since we consider them to be rather unique and since they contributed to the overall success of the program.

Agriculture↗

PubMed2004

Special reference to employee knowledge about depression and suicide: baseline results of a workplace-based mental health support program.

With the sustained economic recession, suicide has been increasing in Japan (more than 300000 victims annually since 1998), particularly among middle-aged employees. Development of preventive measures is needed; however, employees have limited knowledge of the basic information about depression and suicide. One office in Saitama Prefecture, Japan, has been provided with a mental health support program. An initial questionnaire survey was conducted in December 1999. It contained demographic data and information about working styles and daily habits, including alcohol and tobacco use, quality of sleep, social support, the general well-being schedule, and knowledge/attitude toward depression and suicide. Of 225 eligible people, 216 men and women participated. Most of them had stressful schedules and demanding jobs. Their subjective well-being was generally poorer relative to the reference. The mean score of knowledge was 10.5 (SD = 2.02) for 14 items. The accuracy rates ranged from 97.6% incorrect (false) for such items as 'Most suicide victims consult psychiatrists before their deaths' to 42.1% correct (true) for 'A suicidal individual tends to be accident-prone for traffic accidents and injuries.' One-fourth of them had unfavorable attitudes toward depressive colleagues. Neither age nor gender was related to knowledge level and attitude. Variations were observed in the knowledge that employees had toward depression and suicide. A program that provides employees with appropriate information related to mental health is needed.

Adult↗

PubMed1994

Recent insights in programmed electrical stimulation for the management of sustained ventricular arrhythmias.

After more than 20 years of clinical use, programmed electrical stimulation for induction of cardiac arrhythmias remains an important clinical and research tool. The procedure continues to undergo refinement but is not without controversy regarding its accuracy in predicting drug efficacy as determined by serial testing for suppression of ventricular tachyarrhythmias. Recent work has streamlined technical aspects of the procedure itself and promises to improve the selection of patients likely to benefit from such studies. Despite these advances, however, recent publications from the Electrophysiologic Study Versus Electrocardiographic Monitoring trial raise fundamental questions about the ability of any current strategy to predict the efficacy of antiarrhythmic drugs for the prevention of ventricular arrhythmias.

Anti-Arrhythmia Agents↗

PubMed2003

Epilepsy control program in India: a district model.

Based on data originating from neuroepidemiologic studies in India, epilepsy has been identified as a public health problem. The treatment gap varies from 50 to 70% among persons with epilepsy and is compounded further by limited availability of neurologists, often working in urban metropolises, thus restricting the availability of services in a predominantly rural agrarian country. Cost-effective, sustainable epilepsy care programs are urgently required in India. To bridge this wide gap, a district model was developed with the central focus on training the district medical officers in providing epilepsy care with sensitization of state health administrators and nodal neurologists to support and sustain the program. Workshops were conducted for all three groups during the period 1999-2001, with the involvement of 21 state health administrators, 148 district medical officers, and 28 neurologists. Preliminary evaluation indicates a growing interest, enthusiastic commitment, and willingness among health professionals to expand epilepsy care to the periphery. The program revealed that it is possible to reach people with epilepsy on the premise of early diagnosis and management, need-based referral network, and a rational planning for uninterrupted availability of antiepileptic drugs along with education of families. Policy-level initiatives are required further to transform this on a wider scale and to evaluate the efficacy and effectiveness of this approach.

Delivery of Health Care↗

PubMed2005

Life cycle approaches to sustainable consumption: a critical review.

The 2002 World Summit for Sustainable Development in Johannesburg called for a comprehensive set of programs focusing on sustainable consumption and production. According to world leaders, these programs should rely on life cycle assessment (LCA) to promote sustainable patterns of production and consumption. Cleaner production is a well-established activity, and it uses LCA. UNEP, the European Union, and a number of national organizations have now begun to work on sustainable consumption. In developing sustainable consumption policies and activities, the use of LCA presents interesting opportunities that are not yet well understood by policy makers. This paper reviews how life cycle approaches, primarily based on input-output analysis, have been used in the area of sustainable consumption: to inform policy making, select areas of action, identify which lifestyles are more sustainable, advise consumers, and evaluate the effectiveness of sustainable consumption measures. Information on consumption patterns usually comes from consumer expenditure surveys. Different study designs and a better integration with consumer research can provide further interesting insights. Life-cycle approaches still need to be developed and tested. Current research is mostly descriptive; policy makers, however, require more strategic analysis addressing their decision options, including scenario analysis and backcasting.

Community Participation↗

PubMed2005

Does high-intensity resistance training maintain bone mass during moderate weight loss in older overweight adults with type 2 diabetes?

The aim was to investigate whether the addition of supervised high intensity progressive resistance training to a moderate weight loss program (RT+WLoss) could maintain bone mineral density (BMD) and lean mass compared to moderate weight loss (WLoss) alone in older overweight adults with type 2 diabetes. We also investigated whether any benefits derived from a supervised RT program could be sustained through an additional home-based program. This was a 12-month trial in which 36 sedentary, overweight adults aged 60 to 80 years with type 2 diabetes were randomized to either a supervised gymnasium-based RT+WLoss or WLoss program for 6 months (phase 1). Thereafter, all participants completed an additional 6-month home-based training without further dietary modification (phase 2). Total body and regional BMD and bone mineral content (BMC), fat mass (FM) and lean mass (LM) were assessed by DXA every 6 months. Diet, muscle strength (1-RM) and serum total testosterone, estradiol, SHBG, insulin and IGF-1 were measured every 3 months. No between group differences were detected for changes in any of the hormonal parameters at any measurement point. In phase 1, after 6 months of gymnasium-based training, weight and FM decreased similarly in both groups (P<0.01), but LM tended to increase in the RT+WLoss (n=16) relative to the WLoss (n=13) group [net difference (95% CI), 1.8% (0.2, 3.5), P<0.05]. Total body BMD and BMC remained unchanged in the RT+WLoss group, but decreased by 0.9 and 1.5%, respectively, in the WLoss group (interaction, P<0.05). Similar, though non-significant, changes were detected at the femoral neck and lumbar spine (L2-L4). In phase 2, after a further 6 months of home-based training, weight and FM increased significantly in both the RT+WLoss (n=14) and WLoss (n=12) group, but there were no significant changes in LM or total body or regional BMD or BMC in either group from 6 to 12 months. These results indicate that in older, overweight adults with type 2 diabetes, dietary modification should be combined with progressive resistance training to optimize the effects on body composition without having a negative effect on bone health.

Aged↗

PubMed2005

Evaluating the sustainability of SPARK physical education: a case study of translating research into practice.

Dissemination and sustainability of evidence-based physical education programs (PE) has been studied rarely. The sustainability of a health-related PE program (SPARK) was independently evaluated in 111 elementary schools in 7 states. Surveys were mailed to schools that had received SPARK curriculum books, training and follow-up (response rate = 47%). Up to 80% of schools that adopted SPARK PE reported sustained use up to 4 years later. Schools using SPARK had more frequent PE classes. Sustained use was related to support from the principal, not previously having a standard PE program, having adequate equipment, and teachers being physically active. Program sustainability was similar in advantaged and disadvantaged schools. Evidence-based PE programs can be sustained up to 4 years.

Curriculum↗

PubMed1999

Sustained inhibition of a DDD pacemaker at rates below the programmed lower rate during automatic PVARP extension.

A patient with a Pacesetter Paragon III DDD pacemaker exhibited sustained pacemaker inhibition at rates below the programmed lower rate during sinus rhythm with marked first degree AV block. In this device, a pacemaker defined ventricular extrasystole initiates automatic extension of the postventricular atrial refractory period to 480 ms and the atrial escape interval to 830 ms regardless of the programmed lower rate. Sustained pacemaker inhibition at rates below the programmed lower rate occurred because the P wave fell continually in the extended postventricular atrial refractory period, and the conducted QRS complex initiated a pacemaker ventricular extrasystole response with atrial escape interval extension. This process continued as long as the P wave stayed within the extended postventricular atrial refractory period, no ventricular extrasystole disrupted the sequence, and the R-R interval of spontaneous beats was shorter than the extended atrial escape interval. Such a pacemaker response should not be misinterpreted as device malfunction.

Aged↗

PubMed2005

Marathon works. How to thrive in rural practice.

PROBLEM BEING ADDRESSED: Medical care in rural Canada has long been hampered by insufficient numbers of physicians. How can a rural community's physicians change the local medical culture and create a new approach to sustaining their practice? OBJECTIVE OF PROGRAM: To create a sustainable, collegial family practice group and address one rural community's chronically underserviced health care needs. PROGRAM DESCRIPTION: Elements important to physicians'well-being were incorporated into the health care group's functioning to enhance retention and recruitment. The intentional development of a consensus-based approach to decision making has created a supportive team of physicians. Ongoing communication is kept up through regular meetings, retreats, and a Web-based discussion board. Individual physicians retain control of their hours worked each year and their schedules. A novel obstetric call system was introduced to help make schedules more predictable. An internal governance agreement on an alternative payment plan supports varied work schedules, recognizes and funds non-clinical medical work, and pays group members for undertaking health-related projects. CONCLUSION: This approach has helped maintain a stable number of physicians in Marathon, Ont, and has increased the number of health care services delivered to the community.

Family Practice↗

PubMed1993

Effects of procainamide on the signal-averaged electrocardiogram in relation to the results of programmed ventricular stimulation in patients with sustained monomorphic ventricular tachycardia.

OBJECTIVES: The aim of this study was to assess the ability of the signal-averaged electrocardiogram (ECG) to predict the efficacy of procainamide. BACKGROUND: The main role of the signal-averaged ECG has been the identification of postinfarction patients at risk of sudden death. Prediction of the efficacy of antiarrhythmic drugs represents another potential clinical application of this technique. METHODS: The study examined the effects of procainamide on the time domain and spectral temporal analysis of the signal-averaged ECG in relation to the results of programmed ventricular stimulation studies in 31 patients with inducible sustained monomorphic ventricular tachycardia. RESULTS: Procainamide significantly prolonged the total and the initial QRS complex and low amplitude signal durations (mean +/- SD 135 +/- 30 vs. 161 +/- 46 ms, p < 0.0001; 87 +/- 16 vs. 98 +/- 20 ms, p < 0.0001, and 48 +/- 23 vs. 63 +/- 36 ms, p < 0.001, respectively) whereas the root-mean-square voltage of the total QRS complex and of the last 40 ms of the QRS complex was significantly reduced (mean +/- SD 112 +/- 36 vs. 87 +/- 36 microV, p < 0.0001; 21 +/- 19 vs. 13 +/- 12 microV, p < 0.002, respectively). The results of spectral temporal mapping of the signal-averaged ECG were similar before and after procainamide administration. Procainamide prevented the inducibility of sustained ventricular tachycardia or prolonged the cycle length of ventricular tachycardia by > or = 100 ms in 16 patients (52%) (responders). The fractional prolongation of the total QRS duration was significantly greater in responders (26 +/- 15%) than in nonresponders (10 +/- 10%) (p < 0.002) and, when this prolongation was > or = 15%, identified responders with a sensitivity of 94%, a specificity of 87% and an overall predictive accuracy of 90%. CONCLUSIONS: The effects of procainamide on inducibility of ventricular tachycardia during programmed ventricular stimulation can be predicted by the degree of drug-induced prolongation of the signal-averaged QRS complex.

Aged↗

PubMed2006

Addressing cardiovascular disparities through community interventions.

OBJECTIVES: To identify the components and impact of intervention programs aimed at reducing cardiovascular disparities. METHODS: A MEDLINE literature search with key words "cardiovascular" and "African American" was conducted, and all documented interventions targeted at reducing racial disparities were selected for review. We identified the type of intervention, the populations targeted, the length of intervention, and its impact. Articles that documented scientific evidence and some case reports were reviewed. RESULTS: Existing studies widely document cardiovascular disparities as they pertain to structure, process, and outcomes. Other factors affecting disparities pertain to patient, physician, system, or treatment factors. Documented programs tend to focus on lifestyle risk factors and attitudes toward those risk factors. The timelines in the studies are relatively short and do not allow for recording clinical endpoints. Most of the studies do not hinge on comprehensive community support, and they lack a sustainability component. CONCLUSIONS: The impact of programs has been short lived, which points to the need for sustainability programs possibly through community partnerships.

Black or African American↗

PubMed1990

Risk stratification and management of patients with organic heart disease and nonsustained ventricular tachycardia: role of programmed stimulation, left ventricular ejection fraction, and the signal-averaged electrocardiogram.

PURPOSE: Programmed stimulation, left ventricular ejection fraction, and signal-averaged electrocardiography were performed in patients with organic heart disease and spontaneous nonsustained ventricular tachycardia (VT) to determine the role of these techniques in risk stratification and management. PATIENTS AND METHODS: The study consisted of 90 patients: 63 had coronary artery disease and 27 had idiopathic dilated cardiomyopathy. Radionuclide ventriculography, signal-averaged electrocardiography, and programmed electrical stimulation were performed in all patients within 48 hours of index ambulatory electrocardiography. RESULTS: Fifty-three patients (59%) had an ejection fraction less than 40%. Programmed stimulation induced sustained monomorphic VT in 22 patients (24%), ventricular fibrillation (VF) in 10 patients (11%), and no sustained VT/VF in 58 patients (64%). The signal-averaged electrocardiogram (ECG) showed late potentials in 23 patients (26%). Sustained monomorphic VT could be induced in 65% of patients with late potentials and in 10% of those without late potentials. There was no case of inducible sustained monomorphic VT in 33 patients with no late potentials and an ejection fraction of 40% or greater. All patients with induced sustained monomorphic VT received antiarrhythmic therapy guided by the results of programmed stimulation. All 58 patients with no induced sustained ventricular tachyarrhythmias and eight patients with induced VF were discharged without receiving antiarrhythmic drugs. During a follow-up of 30 +/- 10 months, the three-year sudden death rate was 19% in patients with induced sustained VT, 0% in those with induced VF, and 9% in those with no induced sustained VT/VF. The three-year sudden death rate was the same (7%) in patients with no induced sustained VT/VF, both in those with an ejection fraction of 40% or greater or less than 40%. On the other hand, the three-year total cardiac mortality was significantly higher (27%) in those patients with ejection fractions less than 40% compared to those with ejection fractions of 40% or greater (7%). CONCLUSION: It is concluded that the signal-averaged ECG, ejection fraction, and programmed stimulation could be used for the risk stratification and management of patients with organic heart disease and nonsustained VT as follows: (1) Patients with no late potentials and with an ejection fraction of 40% or greater do not require invasive evaluation or antiarrhythmic therapy, since the incidences of induced VT and sudden death are very low. (2) Patients with late potentials as well as patients without late potentials but with an ejection fraction of less than 40% may be advised to undergo electrophysiologic evaluation.(ABSTRACT TRUNCATED AT 400 WORDS)

Anti-Arrhythmia Agents↗

PubMed2006

Community center-based resistance training for the maintenance of glycemic control in adults with type 2 diabetes.

OBJECTIVE: The purpose of this study was to determine whether beneficial effects on glycemic control of an initial laboratory-supervised resistance training program could be sustained through a community center-based maintenance program. RESEARCH DESIGN AND METHODS: We studied 57 overweight (BMI >or=27 kg/m2) sedentary men and women aged 40-80 years with established (>6 months) type 2 diabetes. Initially, all participants attended a twice-weekly 2-month supervised resistance training program conducted in the exercise laboratory. Thereafter, participants undertook a resistance training maintenance program (2 times/week) for 12 months and were randomly assigned to carry this out either in a community fitness and recreation center (center) or in their domestic environment (home). Glycemic control (HbA1c [A1C]) was assessed at 0, 2, and 14 months. RESULTS: Pooling data from the two groups for the 2-month supervised resistance training program showed that compared with baseline, mean A1C fell by -0.4% [95% CI -0.6 to -0.2]. Within-group comparisons showed that A1C remained lower than baseline values at 14 months in the center group (-0.4% [-0.7 to -0.03]) but not in the home group (-0.1% [-0.4 to 0.3]). However, no between-group differences were observed at each time point. Changes in A1C during the maintenance period were positively associated with exercise adherence in the center group only. CONCLUSIONS: Center-based but not home-based resistance training was associated with the maintenance of modestly improved glycemic control from baseline, which was proportional to program adherence. Our findings emphasize the need to develop and test behavioral methods to promote healthy lifestyles including increased physical activity in adults with type 2 diabetes.

Adipose Tissue↗

PubMed2002

Promoting healthy adolescent behavior and development: issues in the design and evaluation of effective youth programs.

The problems of health and development faced by contemporary adolescents require that our communities have greater access to effective, adequately scaled, and sustained youth-serving programs. These 3 dimensions of youth programs are discussed, and the role of evaluations is specified, especially those aimed at program improvement and community empowerment, in facilitating efforts to promote the positive development of young people. These areas of development include competence, confidence, character, connection, and caring/compassion-the "five C's" of positive youth development. Ten features of effective positive youth development programs are described, and the importance of engaging policymakers in order to broadly disseminate and sustain effective programs is stressed.

Adolescent↗

PubMedDate not supplied

Establishing and sustaining state-of-the-art diabetes patient education programs: research and recommendations.

Frequently, diabetes educators in hospitals report meeting severe organizational barriers when attempting to implement advances in diabetes patient education (DPE). This paper reports on how eight successful diabetes patient education programs coped with potential barriers. The results are based on interviews of professionals who played central roles in introducing and sustaining the programs. Many of the identified problems centered around two issues--acquiring needed resources and communicating about the program to a variety of key groups.

Decision Making, Organizational↗

PubMed2002

How to start and sustain a successful pediatric cardiac intensive care program: A combined clinical and administrative strategy.

OBJECTIVE: To delineate key clinical and administrative factors in starting a pediatric cardiac intensive care program and to introduce a scorecard concept to measure excellence in such a new program. Methods: Review of current clinical research data in pediatric cardiac intensive care and administrative business concepts for their application to the pediatric cardiac intensive care program. RESULTS: Although clinical concepts in cardiac intensive care are useful as basic philosophical strategies at the bedside, administrative principles are essential in operational strategies vital to the success of such a program. Using both clinical and business administrative concepts, a balanced strategy can be formulated. CONCLUSIONS: Starting a pediatric cardiac intensive care program is a difficult endeavor. A combined clinical and administrative approach is needed in starting and sustaining excellence in a pediatric cardiac intensive care program. Monitoring excellence in such a program warrants application of a scorecard system.

Journal Article↗

PubMed1989

Incidence of arrhythmias after atrial or dual-chamber pacemaker implantation.

The incidence of sustained atrial, pacemaker-mediated and ventricular rhythm disturbances was studied retrospectively in a consecutive series of 112 patients without a history of preexisting atrial tachyarrhythmias, receiving an atrial or dual-chamber pacemaker. Early atrial fibrillation (during the first week) was recorded twice. Late atrial fibrillation was seen in seven patients, flutter in one, yielding a total incidence of 8.9% for 22 months. There were no significant differences with respect to age, aetiology, electrocardiographic diagnosis, pacing history, or the measured intracardiac P wave between the group with and the group without atrial fibrillation. Treatment with digoxin reverted three patients to sinus rhythm, association of digoxin and amiodarone, six patients. One patient with congestive heart failure remained in atrial fibrillation. Pacemaker-mediated tachycardia was not a major problem. One patient of a subgroup with known ventricular arrhythmia had a non-sustained ventricular tachycardia during programming at follow-up; sustained ventricular tachycardia was not recorded. Reprogramming to VDD, DVI or VVI was done in 6/100 patients. The incidence of atrial fibrillation or flutter in highly selected patients with dual-chamber or atrial pacing is moderately low. It is not possible to identify patients with a high risk for development of atrial fibrillation; when it occurs, it is easily controlled with drugs. DDD pacing seems to be safe in patients with a history of serious ventricular arrhythmias, treated with appropriate drugs.

Aged↗