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QJM Advance Access published online on September 20, 2005
QJM, doi:10.1093/qjmed/hci123
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© The Author 2005. Published by Oxford University Press on behalf of the Association of Physicians. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received May 23, 2005
Revised August 8, 2005

Original paper

Redefining the coronary care unit: an observational study of patients admitted to hospital in England and Wales in 2003

T. Quinn 1, C. Weston 1*, J. Birkhead 1, L. Walker 1, R. Norris 1, and on behalf of the MINAP Steering Group

1 From the Clinical Effectiveness and Evaluation Unit, Royal College of Physicians of London, London, UK

* To whom correspondence should be addressed.
C. Weston, E-mail: cfmw{at}lycos.com


  Abstract

Background: Coronary care units were developed in the 1960s as specially equipped and staffed areas where patients with acute myocardial infarction could be monitored and offered rapid resuscitation from life-threatening arrhythmias. Awareness of the morbidity and mortality of the wider spectrum of acute coronary ischaemia was unrecognized at that time.

Aim: To examine the relative frequencies with which thrombolytic treatment and resuscitation from cardiac arrest are provided for patients with myocardial infarction in cardiac care units (CCUs), emergency departments (EDs) and other medical wards.

Design: Observational study.

Methods: We analysed records from the National Audit of Myocardial Infarction Project (MINAP) for 61 688 patients admitted to 230 acute hospitals in England and Wales during 2003, and who received a final diagnosis of myocardial infarction, for locations of initiation of thrombolytic therapy and of first cardiac arrest within hospital.

Results: Overall, 84% of 27 881 patients with ST-segment-elevation infarction, but only 42% of 30 382 patients with non-ST-elevation infarction, were admitted to a CCU. Of those receiving thrombolytic treatment for ST-elevation infarction, 68.3% of 21 595 did so in the ED. Within the first 4 h after arrival, the majority of episodes of cardiac arrest occurred in the ED: 709 (57%) vs. 488 (39%) in CCU, and 49 (4%) in medical wards.

Discussion: The traditional role of the CCU in providing early resuscitation and thrombolytic treatment for patients with ST elevation infarction has largely been devolved to the ED. The role of the CCU should be re-evaluated, and the service re-designed to provide specialist care for all presentations of acute coronary syndrome.


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