Interventional cardiology surgery
Hypothetical ratings of coronary angiography appropriateness: are
they associated with actual angiographic findings, mortality, and
revascularisation rate? The ACRE study
H Hemingwaya, A M Crooka, S Banerjeeb, J R Dawsonb, G Federc, P G Mageec, A Woodc, S Philpotta, A Timmisc
a Department of
Research and Development, Kensington & Chelsea and Westminster Health
Authority, 50 Eastbourne Terrace, London W2 6LX, UK, b Barts and the London NHS Trust, Cardiac
Directorate, Bonner Road, London E2 9JX, UK, c Department of General
Practice and Primary Care, St Bartholomew's and Royal London Medical
School, Queen Mary and Westfield College, London E1 4NS, UK
Correspondence to: Dr Hemingway harry.hemingway{at}ha.kcw-ha.nthames.nhs.uk
Accepted 20 February
2001
OBJECTIVE
To determine whether
ratings of coronary angiography appropriateness derived by an expert
panel on hypothetical patients are associated with actual angiographic
findings, mortality, and subsequent revascularisation in the ACRE
(appropriateness of coronary revascularisation) study.
DESIGN
Population based, prospective
study. The ACRE expert panel rated hypothetical clinical indications as
inappropriate, uncertain, or appropriate before recruitment of a cohort
of real patients.
SETTING
Royal Hospitals Trust,
London, UK.
PARTICIPANTS
3631 consecutive patients undergoing
coronary angiography (no exclusion criteria).
MAIN OUTCOME MEASURES
Angiographic
findings, mortality (n = 226 deaths), and revascularisation
(n = 1556 procedures) over 2.5 years of follow up.
RESULTS
The indications for coronary
angiography were rated appropriate in 2253 (62%) patients. 166 (5%)
coronary angiograms were performed for indications rated inappropriate,
largely for asymptomatic or atypical chest pain presentations. The
remaining 1212 (33%) angiograms were rated uncertain, of which
47% were in patients with mild angina and no exercise ECG or in
patients with unstable angina controlled by inpatient management. Three
vessel disease was more likely among appropriate cases and normal
coronaries were more likely among inappropriate cases (p < 0.001).
Mortality and revascularisation rates were highest among patients with
an appropriate indication, intermediate in those with an uncertain indication, and lowest in the inappropriate group (log rank p = 0.018
and p < 0.0001, respectively).
CONCLUSION
The ACRE ratings of
appropriateness for angiography predicted angiographic findings,
mortality, and revascularisation rates. These findings support the
clinical usefulness of expert panel methods in defining criteria for
performing coronary angiography.
Keywords: coronary artery disease; coronary angiography; coronary artery bypass graft; appropriateness of coronary revascularisation
© 2001 by Heart
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