(Circulation. 1996;93:4-6.)
© 1996 American Heart Association, Inc.
Articles |
From the Johns Hopkins University, Baltimore, Md (M.N.H.), and Stanford Cardiac Rehabilitation Program, Stanford University School of Medicine, Palo Alto, Calif (N.H.M.).
Correspondence to Martha N. Hill, RN, PhD, Associate Professor, Nursing, Medicine and Public Health, The Johns Hopkins University, 1830 E Monument St, Room 233, Baltimore, Md 21205-2100.
| Introduction |
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Why are we not achieving the same results in clinical practice that we see in randomized controlled clinical trials? We believe one major reason is that the multidisciplinary team approach used in clinical trials to reduce risk is insufficiently incorporated into standard clinical practice.
In the case of secondary prevention for coronary artery disease, improved outcomes depend on patients' following appropriate risk reduction plans. The recent American Heart Association consensus statement "Preventing Heart Attack and Death in Patients With Coronary Disease"7 outlines a set of risk reduction recommendations for clinicians and emphasizes the central role of patient compliance (or "adherence") in achieving improved medical outcomes. The statement says that "attention to enhancing patient compliance is an integral part of any risk reduction program," adding that the proportion of patients who continue risk factor interventions over the long term "can be significantly increased by a team approach in which healthcare professionals-including physicians, nurses, and dietitians- manage risk reduction therapy by using follow-up techniques that include office or clinic visits and telephone contact. In many healthcare settings, the team approach will be the preferred technique for optimizing risk reduction."
The need for improved patient compliance extends well beyond those with established coronary artery disease. For example, for more than 20 years, a blood pressure level of 140/90 mm Hg has been arbitrarily established as the cutoff point for defining high blood pressure. Since 1972, the Coordinating Committee of the National Heart, Lung, and Blood Institute's High Blood Pressure Education Program (to which the American Heart Association belongs) has spearheaded extensive professional education programs and mass media campaigns about control of high blood pressure. Yet the recently published NHANES III data indicate that of all people in the United States with hypertension, only 24%, or 29% after adjustment, now have blood pressures controlled to <140/90 mm Hg.8 9 Fewer than 50% of those treated for hypertension were controlled (<140/90 mm Hg) in each of the six age, sex, and race groups analyzed.9 In the editorial10 accompanying the release of the NHANES III prevalence data,9 Hypertension editor-in-chief E.D. Frohlich says, "This is a totally unacceptable number. ... We can still do better in hypertension control."
The evidence is clear, not only for blood pressure but for smoking, exercise, obesity, and lipids, that optimal risk factor management will benefit very large numbers of people. Statements and consensus reports providing guidance for detection, evaluation, and treatment, including strategies for behavior change and compliance for healthy adults and those with disease, have been widely circulated.11 12 13 14 15 16 17 18 19 Nonetheless, despite progress in controlling some risk factors, evidence indicates that overweight and sedentary activity are increasing.19 20 Further improvement in risk factor reduction is needed if potential beneficial outcomes are to be achieved and costs reduced.
Managing cardiovascular risk factors is a complex, multifactorial process. It requires the management over many decades of single or multiple risk factors within the context of coexisting biological, psychological, and social factors. And it requires that patients not only adopt health-promoting behaviors but also sustain these behaviors indefinitely, adhering both to medication regimens and lifestyle modifications. Monitoring the effects of treatment, including drug-induced side effects or worsened symptoms, and taking appropriate action are other patient responsibilities. Effective risk factor management requires not only that patients participate fully in their care in these ways but also that healthcare professionals be trained in behavioral science and make multiple contacts with their patients. If this is understood, why hasn't standard practice incorporated these approaches?
The delivery of medical care can be conceptualized as three domains: the cognitive (delineating what should be done), the executive (specifying how it should be done and who should do it), and the organizational (determining where to do it). We suggest that deficiencies within each of these domains impede progress in risk reduction needed for successful secondary prevention.
Practice guidelines, for example, are increasingly used by government agencies and healthcare delivery systems to standardize treatment practice. Caring for individuals, however, requires patient-specific data not only about comorbid conditions, symptoms, concurrent medications, and laboratory findings but also about prior experiences with healthcare providers, life-style modification, and readiness to adopt new habits and change behavior patterns. Acquiring such data is central to the cognitive process.
Conveying these data and the resulting recommendations to other providers as well as to the patients and their family and caregivers is an important executive task for which little provision has been made in the current healthcare delivery system. Currently, the system focuses almost exclusively on the hospital and physician's office settings. During hospitalization, physicians and nurses acquire this information, document it, and implement decisions that result from it. But after discharge, the physician caring for the patient may not have the hospital information and thus may have to acquire information and execute decisions with a less well-developed database.
A related deficiency in the long-term care of patients is the almost exclusive reliance on repeated face-to-face visits with the physician, either in the office or in an outpatient clinic. However, it is what happens between these visits that determines whether even the best treatment recommendations will yield improved outcomes. Face-to-face visits with the physician have deep historical roots, but they are less efficient and less effective in improving outcomes than multidisciplinary team approaches that use numerous management strategies during and between office visits. Ultimately, the patient is in charge.21 Our challenge, particularly for those of us who practice in settings delivering care in this era of increasing cost constraints, is to help patients take care of themselves, day in and day out.
Many of the deficiencies that conspire against risk factor management in conventional settings can be corrected by systems that rely on nurses and other nonphysicians. These care providers use the telephone to gather information from patients, communicate treatment decisions, and provide surveillance and support. They can supplement that phone contact with both office and home visits. Other organizational deficiencies can be overcome with computer databases and other forms of decision support.
A case management system applying these strategies was used recently with patients recovering from acute myocardial infarction. The program demonstrated that nurses can effectively manage multiple risk factors simultaneously.22 Known as MULTIFIT, the system relies on specially trained nurses to provide interventions for smoking cessation, exercise training, diet and drug management of hyperlipidemia, and control of other risk factors. In a year-long randomized clinical trial conducted through a health maintenance organization, the MULTIFIT nursing intervention proved to be significantly more effective than conventional care. For example, MULTIFIT patients achieved plasma LDL cholesterol values of 107±30 mg/dL at 1 year, bringing them close to the benchmark value of 100 mg/dL established for regression of atherosclerotic lesions and reduction of clinical events.23 24 Of patients treated under MULTIFIT, 85% were still receiving lipid-lowering medications at 1 year compared with 21% in usual care.22
Why was this approach so effective? The investigators used a single caregiver, the nurse case manager, to provide multidisciplinary services. The nurse referred 5% of the participants, only as needed, to nutrition consultation. By substituting telephone and mail contact for some office visits, the nurse-coordinated program made care more convenient for patients, saved money, and enabled nurses to provide personal instruction, support, and surveillance for individual patients. A computerized database and standardized algorithms were used to facilitate data gathering and medical decision-making. This permitted administration of the kind of high-quality care that has been shown to improve patient outcomes.
For some, these findings are not surprising. Nurse-supervised outreach workers, direct nursing care, and nurse case management have been effective approaches for decades. In a variety of settings with consultation and referral access to physicians, pharmacists, and dietitians, nurses have been shown to be effective in improving outcomes for persons with hypertension,25 26 27 28 29 30 31 hypercholesterolemia,32 diabetes,33 and smoking.34 Moreover, research has shown that nurse-practitioners can provide care within their areas of competence at levels of quality equivalent to or better than that provided by physicians.35
The potential of secondary prevention to improve the clinical course of coronary artery disease is well established. The role of interdisciplinary education and teamwork in practice and research is well recognized.36 37 We can no longer afford to ignore the evidence. Achieving that potential requires addressing the problems that block effective risk factor modification by changing the delivery of patient care and both provider and patient behavior. The consensus statement developed by the Secondary Prevention Panel of the American Heart Association7 calls for action. Now is the time to respond.
| Footnotes |
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| References |
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