Current issues of ACP Journal Club are published in Annals of Internal Medicine


Quality Improvement

Recall to a general practitioner or to a nurse clinic improved assessment in patients with coronary artery disease

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ACP J Club. 2002 Jan-Feb;136:35. doi:10.7326/ACPJC-2002-136-1-035


Source Citation

Moher M, Yudkin P, Wright L, et al., for the Assessment of Implementation Strategies (ASSIST) Trial Collaborative Group. Cluster randomised controlled trial to compare three methods of promoting secondary prevention of coronary heart disease in primary care. BMJ. 2001 Jun 2;322:1338-42. [PubMed ID: 11387182] (All 2002 articles were reviewed for relevance, and abstracts were last revised in 2008.)


Abstract

Question

In patients with coronary artery disease (CAD), what is the effectiveness of audit and feedback, recall to a general practitioner (GP), and recall to a nurse clinic for improving secondary preventive care?

Design

Cluster randomized {allocation concealed*}†, unblinded,* controlled trial with 18-month follow-up.

Setting

21 general practices in Warwickshire, England, UK.

Patients

2142 patients with established CAD (a previous diagnosis of myocardial infarction and angina and receiving antianginal drugs or revascularization by percutaneous transluminal coronary angioplasty or coronary artery bypass). 1906 patients (mean age 66 y, 68% men) completed the study.

Intervention

7 practices were allocated to 1 of 3 quality improvement approaches: audit and feedback (audit group, 559 patients), recall to the GP (GP-recall group, 682 patients), and recall to the nurse clinic (nurse-recall group, 665 patients). Summary audit results of preventive care were given to each practice at baseline. Practices assigned to the GP and nurse-recall groups were given resources to set up registers and recall systems for regular review of patients.

Main outcome measures

The primary outcome was adequate assessment of 3 risk factors (blood pressure, cholesterol, and smoking status) at 18 months. The main secondary outcomes were treatment with hypotensive agents, lipid-lowering drugs, and antiplatelet drugs.

Main results

The increase in adequately assessed patients was greater in the GP and nurse-recall groups than in the audit group (P≤ 0.002) (Table). The increase in use of antiplatelet drugs was greater in the nurse-recall group than in the audit group (P = 0.009), but the GP-recall and audit groups did not differ for use of antiplatelet drugs (P = 0.61) (Table). The groups did not differ for change from baseline of the recorded treatment with hypotensive agents (rates at follow-up were 70%, 73%, and 66% for the audit, GP-recall, and nurse-recall groups, respectively) (P = 0.35) or lipid-lowering drugs (rates at follow-up were 37%, 41%, and 40% for the audit, GP-recall, and nurse-recall groups, respectively) (P = 0.63). Furthermore, the groups did not differ for clinical outcomes (blood pressure, total cholesterol levels, or cotinine levels; all P values > 0.05).

Conclusion

In patients with coronary artery disease, recall to a general practitioner or to a nurse clinic was more effective than audit and feedback for improving risk assessment but not for drug prescribing or clinical outcomes.

*See Glossary.

†Information provided by author.

Source of funding: NHS Executive.

For correspondence: Dr. M. Moher, Department of Primary Health Care, University of Oxford, Institute of Health Sciences, Oxford OX3 7LF, England, UK. FAX 01-865-226720.


Table. Recall to a general practitioner (GP) or to a nurse clinic (NC) vs audit and feedback (AF) for secondary preventive care of coronary artery disease

Outcomes at 18 mo Mean percentage (baseline) Absolute difference after adjusting for baseline (95% CI)
GP NC AF
Adequate assessment 76% (31) 52% (29) 23% (10 to 36)
85% (29) 52% (29) 33% (19 to 46)
Therapy with antiplatelet drugs 80% (73) 74% (62) 2% (−6 to 10)‡
85% (66) 74% (62) 10% (3 to 17)

‡Not significant.


Commentary

Moher and colleagues investigated the “care gap” between optimal therapy and reality in managing patients with documented CAD. Participating practices (only 21 of 79 invited) were probably atypical of most British practices, and baseline standards of care were probably above average. Furthermore, the control group benefited from participation, and incremental costs of interventions were not described. Given these limitations, the study results can probably be generalized with caution.

Follow-up and assessment by nurses were superior to follow-up and assessment by physicians. However, prescribing in the active intervention groups was unchanged, and surrogate clinical outcomes were not improved. Adequacy of prescribing effective therapy seems to be a limiting step in optimizing care. The authors partially rationalize the prescribing barrier as a consequence of negative physician and patient attitudes toward polypharmacy. Although such an attitude may affect prescribing, patients, not their physicians, suffer when effective treatments are withheld.

If patient, physician, or health system barriers to implementing effective treatments are to be overcome, radical and systematic changes rather than incremental, practitioner-dependent modifications may have to be introduced. A better understanding of factors that enable, motivate, and reward patients and health professionals for optimal behaviors is vital to considering health care innovations that might lead to improved assessment, prescribing, and clinical outcomes. If research findings are supportive, legal and professional regulatory changes will have to be considered.

Given the preeminent role of cardiovascular and cerebrovascular disease as a worldwide cause of mortality and a drain on health care resources, advances in the application of proven secondary prevention measures can have a substantial payoff for older, individual patients and for society in general.

S. George Carruthers, MD
United Arab Emirates University
Al Ain, United Arab Emirates