Support of daily ECG procedures in a cardiology department via the integration of an existing clinical database and a commercial ECG management system

BACKGROUND

In the context of HYGEIAnet, the regional health telematics network of Crete, a clinical cardiology database (CARDIS) has been installed in several hospitals. The large number of resting ECGs recorded daily made it a priority to have computerized support for the entire ECG procedure.

METHODS

Starting in late 2000, ICS-FORTH and Mortara Instrument, Inc., collaborated to integrate the Mortara E-Scribe/NT ECG management system with CARDIS in order to support daily ECG procedures. CARDIS was extended to allow automatic ordering of daily ECGs via E-Scribe/NT. The ECG order list is downloaded to the electrocardiographs and executed, the recorded ECGs are transmitted to E-Scribe/NT, where confirmed ECG records are linked back to CARDIS. A thorough testing period was used to identify and correct problems. An ECG viewer/printer was extended to read ECG files in E-Scribe/NT format.

RESULTS

The integration of E-Scribe/NT and CARDIS, enabling automatic scheduling of ECG orders and immediate availability of confirmed ECGs records for viewing and printing in the clinical database, took approximately 4 man months. The performance of the system is highly satisfactory and it is now ready for deployment in the hospital.

CONCLUSIONS

Integration of a commercially available ECG management system with an existing clinical database can provide a rapid, practical solution that requires no major modifications to either software component. The success of this project makes us optimistic about extending CARDIS to support additional examination procedures such as digital coronary angiography and ultrasound examinations.

Synchronized, interactive teleconferencing with digital cardiac images

St James's Hospital is a tertiary referral center for percutaneous intervention and cardiothoracic surgery for a number of referring hospitals. This article reports on the development and implementation of a synchronized, interactive teleconferencing system for cardiac images that links St. James's Hospital with a remote site (Sligo General Hospital) and overcomes the problems of transmission of large image files. Teleconferencing was achieved by setting up lossless auto transmission of patient files overnight and conferencing the next morning with linked control signals and databases. As a suitable product was not available, a commercially new software was developed. The system links the imaging databases, monitors and synchronizes progress through imaging sequences, and links a range of image processing and control functions. All parties to the conference are ensured that they are looking at the same images as they are played or at specific aspects of an image that the other party is highlighting. The system allows patient management decisions to be made at a weekly joint teleconference with cardiothoracic surgeons and interventional cardiologists from both sites. Rapid decision making was facilitated with 70% of decisions obtained within 24 h, and 88% within 1 week of their procedure. In urgent cases, data can be transmitted within 20 min of the diagnostic procedure. The system allows increased access to angiography for patients living in rural areas, and provides a more focused referral for revascularization. Participation of the referring cardiologist has improved the quality of decision making.

Telecardiology for patients with acute or chronic cardiac complaints: The ‘SHL’ experience in Israel and Germany

OBJECTIVE

To assess the impact of a telemedicine program in which electrocardiogram (EKG), body weight and/or blood pressure are measured at home and medically trained personnel judge the transmitted data and council the patients by telephone.

METHOD

We systematically studied the outcome and cost-effectiveness of the cardiac programs carried out by Shahal (SHL) during the past 19 years.

RESULT

Most patients (85%) with acute complaints resembling coronary artery disease, could be reassured, representing a savings of about 677.000 euro per 10,000 members/yr in Israël in 1989, and a marked reduction in patient delay to 44 min (median). In chronic heart failure a 66% reduction in hospitalisation days was observed, together with an improvement in quality of life. A large Healthcare Insurance Company in Germany (Taunus BKK) has calculated that it can save at least 5 million euro per year with the use of such services.

CONCLUSION

Disease management with concomitant telemedicine for coronary artery disease and chronic heart failure is safe and effective and has a huge potential for cost savings, improvements in quality of life and in prognosis of heart disease.

A comparison of cardiologist and noncardiologist use of echocardiograms: implications for containing health care costs

Echocardiography enables physicians to examine the heart noninvasively and provides a comprehensive evaluation of the cardiovascular system. However, because it is a relatively expensive procedure compared to an ECG or X-ray, it is crucial that "echo" be utilized appropriately and judiciously. Using a retrospective chart review, we sought to determine whether there are differences in concordance between the diagnoses and echo findings of cardiologists and those of other physicians. Due to cardiologists' greater knowledge of cardiophysiology and echocardiography, cardiologists were expected to have a higher concordance between patient diagnosis and echocardiogram findings when compared to noncardiology physicians. Randomly, 500 echo reports were assessed for diagnosis, reason for the echo, and whether the echo findings agreed with the diagnosis. Other criteria that were studied included whether there were additional, unanticipated findings and whether these findings were of major or minor importance. Concordance between cardiologist pre-test diagnosis and echo findings was found in 95 out of 175 tests (54%). Noncardiologist pre-test diagnosis concordance with echo findings was found in 117 out of 325 tests (36%) (p<0.0001). Thus, the c ardiologists were found to have a significantly higher concordance between diagnosis and findings on echocardiogram when compared to noncardiologist physicians.

[Records of in-hospital cardiopulmonary resuscitation: applicability of a tool]

Records of cardiac arrest are not usually made, or are incomplete, and should contain more information. This study aimed at applying a tool developed to record in-hospital cardiac arrest. The tool was previously validated by experts, and then applied by registered nurses in six wards. Fifty-four cases of in-hospital cardiac arrest were recorded, and over 90% positive answers, relative to evaluation criteria, were obtained. In the analysis of entry per data set, the average was higher than 70%. It was concluded that the tool supplied the needs of cardiac arrest recording for this hospital.

Home-based cardiac rehabilitation compared with centre-based rehabilitation and usual care: A systematic review and meta-analysis

BACKGROUND

To determine the effectiveness of home-based cardiac rehabilitation programmes compared with (i) usual care and (ii) supervised centre-based cardiac rehabilitation on mortality, health related quality of life and modifiable cardiac risk factors of patients with coronary heart disease.

METHODS

Systematic review and meta-analysis of randomised controlled trials.

MAIN OUTCOME MEASURES

mortality, smoking cessation, exercise capacity, systolic blood pressure, total cholesterol, psychological status, and health related quality of life.

RESULTS

Eighteen included trials for home versus usual rehabilitation and six trials of home versus supervised centre-based rehabilitation were identified. The home-based interventions were clinically heterogeneous, trials often small, with quality poorly reported. Compared with usual care, home-based cardiac rehabilitation had a 4 mm Hg (95% CI 6.5, 1.5) greater reduction in systolic blood pressure, and a reduced relative risk of being a smoker at follow-up (RR 0.71, 95% CI 0.51, 1.00). Differences in exercise capacity, total cholesterol, anxiety and depression were all in favour of the home-based group. In patients post-myocardial infarction exercise capacity was significantly improved in the home rehabilitation group by 1.1 METS (95% CI 0.2, 2.1) compared to usual care. The comparison of home-based with supervised centre-based cardiac rehabilitation revealed no significant differences in exercise capacity, systolic blood pressure and total cholesterol.

CONCLUSIONS

Current evidence does not show home-based cardiac rehabilitation to be significantly inferior to centre-based rehabilitation for low-risk cardiac patients. However, the numbers of patients included are less than 750 and ongoing trials will contribute to the debate on the acceptability, effectiveness and cost-effectiveness of home-based cardiac rehabilitation.

Rapid brain natriuretic peptide test and Doppler echocardiography for early diagnosis of mild heart failure

BACKGROUND

The early identification of patients at risk for the development of clinical heart failure (HF) is a new challenge in an effort to improve outcomes.

METHODS

We prospectively evaluated whether the combination of brain natriuretic peptide (BNP) measurements (Triage BNP test, Biosite Diagnostics) and echocardiography would effectively stratify patients with new symptoms in a cost-effective HF program aimed at early diagnosis of mild HF. A total of 252 patients were referred by 100 general practitioners.

RESULTS

Among the study population, the median BNP value was 78 ng/L (range, 5-1491 ng/L). BNP concentrations were lower among patients without heart disease [median 15 ng/L (range, 5-167 ng/L); n = 96] than among patients with confirmed HF [median, 165 ng/L (22-1491 ng/L); n = 157; Mann-Whitney U-test, 12.3; P <0.001]. Patients were grouped into diastolic dysfunction [BNP, 195 (223) ng/L], systolic dysfunction [BNP, 290 (394) ng/L], and both systolic and diastolic dysfunction [BNP, 776 (506) ng/L]. In this model, a cutoff value of 50 ng/L BNP increases the diagnostic accuracy in predicting mild HF, avoiding 41 echocardiograms per 100 patients studied, with a net saving of 14% of total costs.

CONCLUSIONS

Blood BNP concentrations, in a cost effective targeted screening, can play an important role in diagnosing mild HF and stratifying patients into risk groups of cardiac dysfunction.

Evaluation of a self-management programme for congestive heart failure patients: design of a randomised controlled trial

BACKGROUND

Congestive heart failure (CHF) has a substantial impact on care utilisation and quality of life. It is crucial for patients to cope with CHF adequately, if they are to live an acceptable life. Self-management may play an important role in this regard. Previous studies have shown the effectiveness of the 'Chronic Disease Self-Management Program' (CDSMP), a group-based cognitive behavioural programme for patients with various chronic conditions. However, the programme's effectiveness has not yet been studied specifically among CHF patients. This paper presents the design of a randomised controlled trial to evaluate the effects of the CDSMP on psychosocial attributes, health behaviour, quality of life, and health care utilisation of CHF patients.

METHODS/DESIGN

The programme is being evaluated in a two-group randomised controlled trial. Patients were eligible if they had been diagnosed with CHF and experienced slight to marked limitation of physical activity. They were selected from the Heart Failure and/or Cardiology Outpatient Clinics of six hospitals. Eligible patients underwent a baseline assessment and were subsequently allocated to the intervention or control group. Patients allocated to the intervention group were invited to attend the self-management programme consisting of six weekly sessions, led by a CHF nurse specialist and a CHF patient. Those allocated to the control group received care as usual. Follow-up measurements are being carried out immediately after the intervention period, and six and twelve months after the start of the intervention. An effect evaluation and a process evaluation are being conducted. The primary outcomes of the effect evaluation are self-efficacy expectancies, perceived control, and cognitive symptom management. The secondary outcome measures are smoking and drinking behaviour, Body Mass Index (BMI), physical activity level, self-care behaviour, health-related quality of life, perceived autonomy, symptoms of anxiety and depression, and health care utilisation. The programme's feasibility is assessed by measuring compliance with the protocol, patients' attendance and adherence, and the opinions about the programme.

DISCUSSION

A total number of 318 patients were included in the trial. At present, follow-up data are being collected. The results of the trial become clear after completion of the data collection in January 2007.

TRIAL REGISTRATION

Trialregister (http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=467) ISRCTN88363287.

Contemporary referral of patients from community care to cardiology lack diagnostic and clinical detail

The quantity of referrals to secondary care is increasing. That the quality of medical referrals is decreasing is a common allegation yet has rarely been assessed. We report a time-limited, cross-sectional survey evaluating cardiological referral information quality. Referral letters (n = 218, excluding direct access pro formas) from GPs to the Cardiology Department at City Hospital, Birmingham, were collated and analysed over 2 months. A subset (n = 49) of these patients completed questionnaires assessing their knowledge and patient communication of the referral. Information quality was poor (length, diagnosis, expectation, prior treatment and investigation) with almost half of all letters containing only outline symptomatic complaints without diagnosis. The majority of patients referred had not been investigated or treated in any way before referral. Despite lack of understanding of the reason for referral, typically the majority of patients expressed themselves as satisfied with the process. Given most referrals are seen as appropriate, information exchange between secondary and primary care is crucial. By contrast, the standard of even basic clinical assessment communicated between primary care and secondary care was severely limited. The reason(s) why medical assessment is lacking are unclear but must be explored to give more support to primary care to complete basic medical task particularly if investment is to flow into this source.

[Chronic nephropathies and disorders of renal function--is it sufficiently diagnosed in patients hospitalised on department of internal medicine and cardiology?]

We have found out that nephropathies and renal dysfunctions are diagnosed insufficiently. At the same time, it has been observed that patients are sent to nephrology out-patient clinics too late. The aim of our study was to identify how nephropathy and renal dysfunction are diagnosed and how these diagnoses are recorded in diagnostic summary of hospital discharge report in patients hospitalized in department of internal medicine and cardiology of a big teaching hospital. Also, we studied the incidence of risk diseases (arterial hypertension and diabetes mellitus) and serious cardiovascular complications in individual stages of renal dysfunction. We analysed 325 medical records of patients hospitalized and discharged in the course of one month. Renal dysfunction was classified according to Kidney Disease Outcomes Quality Initiative. Glomerulal filtration rate was calculated via simplified Levey's formula. Nephropathy and renal dysfunction were diagnosed, and properly recorded in diagnostic summary, only in 5 % of patients in the Stage I of renal dysfunction (Stage II = 2%, Stage III = 28%, Stage IV = 88% and Stage V = 88%). The incidence of risk diseases and cardiovascular complications increased linearly with progression of renal insufficiency. The results of our study prove that nephropathy and renal dysfunction are diagnosed insufficiently, particularly in early stages when it is still possible to use targeted therapy and early control of specific complications of renal insufficiency.

Association of case volume with mortality of chinese patients after coronary artery bypass grafting: Taiwan experience

BACKGROUND

An inverse relationship between surgeon volume or hospital volume and mortality has been reported in Western countries, but seldom in Asia.

METHODS AND RESULTS

The data of 4,724 patients with coronary artery disease who underwent coronary artery bypass graft (CABG) surgery in Taiwan between 1(st) January 2000 and 31(st) December 2001 were analyzed in this prospective cohort study. Overall, 3.45% of patients died in-hospital (IH), and 6.48% patients died within 30 days after discharge (AD30); 85.0% of patients in the AD30 group died at home within 1 day of discharge because of a "cultural preference for dying at home". After adjustment by stepwise logistic regression for age, sex, cardiac function, co-morbidity and in-hospital complications, higher provider volume was still associated with lower mortality rates for CABG, especially higher surgeon volume. Because IH mortality can be affected by different culture, the IH plus AD30 mortality rate is more appropriate as a proxy to reflect the mortality of a specific procedure.

CONCLUSIONS

The relationship of higher-volume hospitals or surgeons with lower mortality rate for patients undergoing CABG is a general phenomenon in Western and Chinese societies. However, the combination of the AD30 and IH mortality rates has to be considered when investigating procedural mortality rates in Chinese society.

Safety and efficacy of a nurse-led clinic for post-operative coronary artery bypass grafting patients

BACKGROUND

New opportunities are emerging for nurses as sovereign health care specialists. In accordance with British and American experience, several universities on the European Continent started Advance Nursing Practice programs for nurses to become certified nurse specialists, functioning as intermediates between the consultant, the ward nurse and the patient.

AIMS

This observational study was conducted to evaluate safety and efficacy of a nurse-led clinic for patients recovering after a successful coronary artery bypass grafting operation.

METHODS

From April 1999 to June 2002, 584 consecutive patients underwent a coronary artery bypass graft operation after which they were admitted to the cardiology ward. Subsequently, these patients were treated either by a certified nurse practitioner or by a resident. Both were supervised by an attending cardiologist. The study elapses three time phases: phase I (1999) first control period, phase II (2000-2002) the nurse practitioner was in charge, and phase III (2002) the second control period.

RESULTS

A total of 584 patients were admitted at a mean of 5.5 and 6.3 days after the operation (phase II vs I+III, respectively). Typically these patients were men (79%) with a mean age of 67+/-11 years. During the observation period, 349 patients were treated by the nurse practitioner and 235 by a resident (89 in phase I and 146 in phase III). Two patients suddenly died while admitted. All other patients recovered and were discharged. The nurse-treated patients (phase II) were discharged significantly sooner than those treated by the regular staff (11.5 vs 14.7 days; p<0.001, respectively). The 30-day mortality rate was 0.4% and did not differ between the respective patient or time-phase groups.

CONCLUSION

A nurse-led clinic for patients recovering from a coronary artery bypass graft operation was safely and efficaciously introduced in a large Dutch non-cardiac surgery hospital. This study protocol may serve as a preamble for upcoming nurse-led programs to developed and implement the sovereign care by nurse practitioners for various diseases and in different settings.

Denial in patients with a first-time myocardial infarction: relations to pre-hospital delay and attendance to a cardiac rehabilitation programme

BACKGROUND

Survival of a myocardial infarction and subsequent prognosis are highly dependent on the time between onset of symptoms and medical intervention.

DESIGN

This cross-sectional study examines whether patients who used the psychological defence mechanism of denial when faced with symptoms of a first-time myocardial infarction tended to also show a prolonged delay in going to the hospital and to be less willing to participate in a cardiac rehabilitation programme.

METHODS

One hundred and seven patients, 78 men and 29 women, were enrolled in this study. The sample was divided into two groups depending on whether the patients sought medical help within 4 h after they began experiencing myocardial infarction symptoms (non-delayers) or whether they waited longer (delayers). Denial was measured with the Hackett and Cassem semi-structured interview 3-5 days after the patients entered the hospital. Data on participation (attenders) or not (non-attenders) in the rehabilitation programme was also obtained.

RESULTS

Forty-nine patients exhibited a prolonged delay and 76 patients did not attend the rehabilitation programme. Both prolonged delay and a lesser readiness to attend the rehabilitation programme that was offered were related to a greater use of denial. In addition, the great majority of the patients categorized as being high deniers were found to also be both delayers and non-attenders.

CONCLUSIONS

The results suggest denial to increase the health risks of persons potentially prone to myocardial infarction. If our knowledge about this psychological defence mechanism is increased, we might be able to reach more patients in alternative and individually based cardiac rehabilitation programmes.

Integrating "best of care" protocols into clinicians' workflow via care provider order entry: impact on quality-of-care indicators for acute myocardial infarction

OBJECTIVE

In the context of an inpatient care provider order entry (CPOE) system, to evaluate the impact of a decision support tool on integration of cardiology "best of care" order sets into clinicians' admission workflow, and on quality measures for the management of acute myocardial infarction (AMI) patients.

DESIGN

A before-and-after study of physician orders evaluated (1) per-patient use rates of standardized acute coronary syndrome (ACS) order set and (2) patient-level compliance with two individual recommendations: early aspirin ordering and beta-blocker ordering.

MEASUREMENTS

The effectiveness of the intervention was evaluated for (1) all patients with ACS (suspected for AMI at the time of admission) (N = 540) and (2) the subset of the ACS patients with confirmed discharge diagnosis of AMI (n = 180) who comprise the recommended target population who should receive aspirin and/or beta-blockers. Compliance rates for use of the ACS order set, aspirin ordering, and beta-blocker ordering were calculated as the percentages of patients who had each action performed within 24 hours of admission.

RESULTS

For all ACS admissions, the decision support tool significantly increased use of the ACS order set (p = 0.009). Use of the ACS order set led, within the first 24 hours of hospitalization, to a significant increase in the number of patients who received aspirin (p = 0.001) and a nonsignificant increase in the number of patients who received beta-blockers (p = 0.07). Results for confirmed AMI cases demonstrated similar increases, but did not reach statistical significance.

CONCLUSION

The decision support tool increased optional use of the ACS order set, but room for additional improvement exists.

Practical guidelines for the use of anticoagulants in the catheterization laboratory

Optimal treatment of patients during percutaneous coronary interventions (PCIs) is constantly changing as clinical trials provide new and clinically relevant information. Clinicians need to be aware of this information to incorporate these new strategies into clinical practice, leading to improvements in the care of patients. The direct thrombin inhibitor, bivalirudin, will play an increasingly important role as the primary anticoagulant for PCIs because it meets the criteria as a safer, cost-effective, and convenient agent in a spectrum of clinical scenarios. This article will provide practical guidelines to assist the interventional cardiologist to prepare his or her patient for PCI and will focus on some of the more common and more difficult patient cohorts, in particular those patients with chronic kidney disease as well as the elderly, 2 of the fastest growing groups of patients undergoing PCI.

Prevalence of newly diagnosed diabetes in clinical settings

A substantial number of patients being evaluated or treated for cardiovascular disease are found to have glucometabolic disorders. Identification of such patients is important because treatment for coronary artery disease and stroke needs to be individualized. Hyperglycemia on admission or during hospitalization regardless of whether diabetes mellitus is known to exist in these patients is associated with increased morbidity and mortality. Despite the fact that this has been known for some time, various strategies to reduce hyperglycemia have had mixed results in cardiac outcomes. Another important factor is that a new diagnosis of diabetes mellitus in these patients should result in the patient's triage to appropriate healthcare professionals to optimize glycemic control. The prevalence of hyperglycemia in patients admitted with acute cardiovascular disease and the effect of hyperglycemia on outcome are reviewed.

Impact of computer-generated personalized goals on cholesterol lowering

OBJECTIVES

The National Cholesterol Education Program (NCEP) has enhanced public awareness of the importance of cholesterol in the development of heart disease, yet most patients with cardiovascular disease (CVD) do not know or achieve their low-density lipoprotein cholesterol (LDL-C) goals. This randomized, controlled trial was designed to evaluate the impact of a system that provides uniquely formatted laboratory results to patients with CVD on their changes in LDL-C levels.

METHODS

Eighty patients with CVD were randomized to receive standard care or the intervention inclusive of a computer-generated, 11''x17'' color poster depicting an individual's LDL-C status and goals along with personalized steps to aid in goal achievement. Cholesterol profiles were obtained at baseline and 6 months after enrollment. Physicians received standard laboratory reports and were blinded to the randomization.

RESULTS

There were no significant differences between patient groups in age, education level, race, baseline cholesterol levels, comorbidities, or percentage of patients in each group who met their NCEP goal at baseline. Patients receiving intervention tools had significant reductions in LDL-C from baseline compared with patients in the control group. Intervention patients who did not meet NCEP goals at baseline had the greatest reduction in LDL-C, with a mean change from baseline of -21.5 mg/dL (P<0.001) whereas standard care patients had no significant change in the LDL-C levels (-4.6 mg/dL, P=0.28). At study close, 73% of intervention patients reported that their posters remained displayed on their refrigerator.

CONCLUSION

This unique and personalized intervention resulted in the LDL-C lowering benefit among patients with CVD comparable to that of lipid lowering agents.

A survey of professionals delivering secondary care regarding their requirements for paediatric cardiac services as provided by specialists

The provision of outreach services by paediatric cardiac centres enhances the choice for both parents and professionals. We have conducted a survey to investigate the processes for information and communication at times of interface between specialist and local services for cardiac disease. Based on the responses, we suggest that distance from, and level of contact with, the specialist centre may influence satisfaction and the perceived usefulness of more information. We suggest strategies to increase contact, and make more effective targeting of resources.