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Reducing delay for myocardial
infarction
Dr Swanson and colleagues report the important finding that
hospital delay in delivering primary percutaneous intervention (PPCI) for acute
ST elevation myocardial infarction can be reduced by about 15 minutes by
shortening the chain of command after the patient arrives at
hospital.1 But as, the authors point out, this
has no effect on the much longer delay (average 2–3 hours in most series)
between the onset of symptoms and the patient’s arrival. Most of this is
due to delay by the patient in calling for help, and, as the authors also say,
only community education is likely to improve the situation.
Important—as is recanalisation of the infarct-related
artery by thrombolytic treatment or PPCI—timely resuscitation from
ventricular fibrillation (most likely to be successful during the first few
hours of onset) has the potential to save many more
lives.2 So to call 111 for an ambulance staffed
by a paramedic with a defibrillator is the first imperative for a patient with
developing infarction.
The “Heart Attack Action!” message to the
community has been promulgated in New Zealand by the National Heart Foundation
in the past, and in other countries mainly by media campaigns. But results have
been disappointing, both here and overseas. A new initiative is required.
One logical initiative would be to couple a brief
description of cardiac pain and the message “New chest pain lasting 15
minutes or more call 111 for the ambulance” with standard advice (diet,
exercise, don’t smoke, check blood pressure and cholesterol etc) on
primary prevention. The message should also be repeated to all patients with
known acute or chronic coronary disease before discharge from hospital or by
their general practitioner.
Any reduction in delay would likely be a long time coming,
but this of course applies also to other health initiatives, notably advice on
smoking!
Robin M Norris
Retired Cardiologist Auckland, New Zealand References:
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