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Edward H Wagner W A MacColl Institute for
Healthcare Innovation, Center for Health Studies, Group Health
Cooperative of Puget Sound, 1730 Minor Ave, Suite 1290, Seattle WA
98101, USA
wagner.e{at}ghc.org
"In the gradual division of labor, by which
civilization has emerged from barbarism, the doctor and nurse have been
evolved"
Sir William Osler (1891)
The delivery of health care by a coordinated team of individuals has always been assumed to be a good thing. Patients reap the benefits of more eyes and ears, the insights of different bodies of knowledge, and a wider range of skills. Thus team care has generally been embraced by most as a criterion for high quality care. Despite its appeal, team care, especially in the primary care setting, remains a source of confusion and some scepticism.1 Which disciplines are essential on the team? What do the team members other than the doctor do to support patient care?
With the ageing of the population and the advances in the treatment of chronic diseases, teamwork in the context of chronic diseases needs to be re-examined. Successful chronic disease interventions usually involve a coordinated multidisciplinary care team.2-5
In this article I consider the implications of these observations for the structure and functioning of patient care teams in primary care. My work is rooted in US health care, and the references and roles described largely reflect that perspective. I performed a Medline search for randomised controlled trials of team care using the MeSH heading "patient care team."
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Summary points
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What is a patient care team? |
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A patient care team is a group of diverse clinicians who
communicate with each other regularly about the care of a defined group
of patients and participate in that care.6 Do the typical staff members in a surgery
nurse, medical assistant, and
receptionist
constitute a care team? The answer depends on how they
function as a group
whether they meet, whether they explicitly define
clinical roles, and what kinds of clinical roles they have. Starfield
identified three categories of functions performed by non-medical
staff: supplementary functions (functions that could be done, albeit
inefficiently, by the doctor
such as giving injections); complementary
functions (those that doctors often have neither the skills nor the
time to do well, such as counselling on behavioural change); and
substitute functions (those that are traditionally performed by the
doctor, such as diagnosis and treatment of illness).6 I
will focus on the complementary functions. The real potential of team
care to improve health outcomes and reduce healthcare costs is the ability to increase the number and quality of services available.
Effective team care for chronic illness often involves professionals
outside the group of individuals working in a single practice; it may
involve multiple practices
for example, primary and specialist
care
or it may involve multiple organisations, such as a general
practice and a community agency. Teams that cross practice or
organisational boundaries may create communication and administrative
nightmares but are essential for optimising care for many
patients.7
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Effectiveness of team care |
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Most successful interventions in chronic disease management entail the delegation of responsibility by the primary care doctor to team members for ensuring that patients receive proved clinical and self management support services. 2-4 8 Often the team is more effective with the addition of new disciplines, such as clinical pharmacy9 or nursing case management.8 Effective chronic illness programmes tend to exploit the varied skills of the team by using the following strategies.
Population based care
Population based care is an
approach to planning and delivering care to defined patient populations that tries to ensure that effective interventions reach all patients who need them.10 It begins with a protocol or guideline
that defines the components (assessments and treatments) of high
quality care. The steps required to deliver the interventions are
specified and delegated to members of the team. Taplin and colleagues
have described the planning and task delegation of population based care in a single primary care practice.
11 12
Treatment planning
Treatment plans for each patient
seem to be essential features of effective chronic illness programmes, and more formal, written plans help to organise the work of teams and
help patients to navigate the complexities of multidisciplinary care.
Plans that include patients' treatment preferences are more likely to
result in satisfied, compliant patients.
13 14
Evidence based clinical management
Advances in
medicine have increased the number of chronic conditions that can be
successfully treated but have also increased the complexity of
regimens. The identification or addition of team members to achieve
greater concordance with complex treatment protocols by providers and patients has significantly improved outcomes in several chronic conditions.15-20 One major advantage of non-medical staff
may be that the legal constraints placed on their decision making
increase the rigour with which they follow protocols. Becker and
colleagues, for example, compared the effects of lipid management by
nurses with the effects of primary care on the lipid concentrations of high risk patients.21 Even though both groups of
professionals had access to guidelines and educational materials,
patients randomised to the nurse intervention were 2.5 times more
likely to reach their goal cholesterol concentration.
Self management support
Growing evidence exists that
educational and supportive interventions directed at helping patients to change risky behaviours or become better self managers improve outcomes across a range of chronic illnesses.14 Effective
interventions tend to emphasise the acquisition of skills rather than
just knowledge and systematically try to bolster patients' motivation
and their confidence in managing their condition rather than encourage
dependency. Most doctors have neither the training nor the time to
engage in counselling on behaviour change or to give self management support.22 The advantages of the team having a nurse
trained in behavioural counselling, or other professionals, are
illustrated by several studies.
15 17 18
More effective consultations
The limitations of a brief
consultation with a chronically ill patient, who will have multiple needs, are obvious. Clinics run for patients with similar needs
for example, asthma or diabetic clinics
are a part of medical practice in
the United Kingdom.
23 24
Beck and colleagues studied
"group consultations" (consultations with several patients at once)
for older patients in a randomised trial and found that such patients were more satisfied, more up to date in their preventive care, and used
health services less often than comparison patients.25 Group consultations may provide a particularly efficient vehicle for
the complementary functions of team care.
Sustained follow up
Close follow up ensures early
detection of adverse effects, problems in compliance, failure to
respond to treatment, and recrudescence of symptoms. It affords
opportunities to solve problems and demonstrate the concern of the care
team. Many of the successful interventions described above rely on a practice initiating follow up of patients. Randomised trials have shown
the effectiveness of telephone follow up by nurses or other staff in
chronic illness care.
14 26-28
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Team composition for effective chronic disease management |
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Nurse case managers
Most successful chronic disease interventions in the literature
involve a nurse with additional experience or training in the clinical
and behavioural treatment of a chronic disease. The nurses may be nurse
practitioners, advanced practice nurses with additional degrees in
medical areas, or nurses with additional experience and credentials in
a particular chronic disease. The nurses personally "manage"
patients by protocol, adding clinical and self management skills as
well as greater intensity of care. Most such innovations described in
the literature involve a centralised nurse case manager working with
several practices or a somewhat independent provider of services based in a related institution, such as a "senior centre" (day centre for
elderly people)29 or hospital.17 In many
settings, however, the intent of case management is discharge planning
or reduction in health services use, not clinical
improvement.30 Arranging transfers without managing the
condition may not benefit patients.
28 31 32
|
for example, an endocrinologist or
cardiologist.8
Medical specialists
An interesting feature of many effective US chronic disease
management programmes in primary care is the involvement of relevant
medical specialists beyond their usual roles as consultants by
referral. The involvement may be direct, as in the work of Katon and
colleagues with depressed patients where psychiatrists alternated
visits with the primary care doctor.16 Alternatively, specialist input may be mediated through nurse case managers who discuss patients regularly with a defined specialist member of the
management programme.
15 17 18 33
Still another model is
the population based expert team developed at Group Health Cooperative,
where a diabetologist and nurse educator visit primary care practices
by invitation to see patients with the primary care team and establish
a model for good diabetes care.
34 35
Whether the
involvement of specialists is critical to success or merely a
characteristic of programmes that tend to be evaluated and published
is unclear.
Clinical pharmacists
There have been many studies of attempts to integrate pharmacists
into the primary care team. These efforts have been recently reviewed
by the Cochrane Collaboration, which concludes that, although the
studies are generally of poor quality, they suggest positive effects on
prescribing behaviour, a reduction in use of health services, and
improved patient outcomes.9 Pharmacist team members may
especially contribute to the care of chronic illness by optimising drug
regimens to reduce adverse effects
36 37
and increase
efficacy.19
Social workers
Relatively few empirical data exist on the utility of social
workers' involvement in patient care teams. A Medline search found
fewer than five randomised trials of such involvement in medical care
published in English since 1966. The three trials most relevant to
primary care investigated the efficacy of social work in the care of
chronically ill children,38 stroke survivors,39 and the carers of patients with Alzheimer's
disease.40 None of these trials showed improvements in key
outcomes over usual care. None the less, social workers are considered
essential members of evaluation and management teams for elderly
people, where the acquisition of community resources and the
integration of patients back into the community are central features of
the management plan. Clearly more research is needed to clarify the potential contributions of social work to chronic disease management.
Lay health workers
Lay health workers have long played a crucial part in health care
in developing countries. They have also been widely used in the US
community health centre and hospice movements, and evidence is growing
attesting to their value in patient care teams that work in low income
communities.
41 42 43
Community health workers, or health
aides, have important roles in bridging the language and cultural gaps
between middle class health professionals and ethnically and culturally
different patient populations. Lay volunteers who have experienced
certain illnesses have also been used to support and coach patients
facing similar challenges.44 Lorig and colleagues have
shown the effectiveness of self management programmes led by lay
workers for patients with arthritis44 and for chronic
illness in general.45
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Conclusion |
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Over the past two decades, intervention studies have begun to clarify the advantages to chronically ill patients of care by a team, and the particular team roles and functions associated with better outcomes. The involvement of, or even leadership by, appropriately trained nurses or other staff who complement the doctor in critical care functions (such as assessment, treatment management, self management support, and follow up) has been shown repeatedly to improve professionals' adherence to guidelines and patients' satisfaction, clinical and health status, and use of health services. Chronically ill patients will benefit from a care team that includes skilled clinicians and educators who have both clinical skills and self management support skills and population managers who understand team function and public health principles and approaches. Practice nurses and pharmacists can perform these roles if they have the requisite training, but many do not. Some patients with greater needs may benefit from the involvement of medical specialists, and lay health workers may ease the difficulties of caring for vulnerable populations.
Patient care teams in primary care have the potential to improve the
quality of care for patients with chronic illness if the roles of team
members are clearly defined and explicitly delegated and if team
members are trained for their roles. But the presence of a trained team
may be of little help if doctors cannot share care
effectively1 or if a practice's lack of organisation
limits the availability of staff to work in these complementary roles. With appropriate training and effective teamwork, primary care teams
make it possible to manage complex chronic illnesses intensively without losing the benefits of comprehensive, continuous primary care.
6 46-48
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Footnotes |
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Funding: Supported by grants from the Robert Wood Johnson Foundation.
Competing interests: None declared.
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(Accepted 2 February 2000)
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