This site is intended for healthcare professionals
Login | Register (NOW FREE)

Medical search

myocardial infarction (non-Q-wave)

FREE subscriptions for doctors and students... click here
You have 3 open access pages.

Non-ST elevation MI (previously termed non-Q wave MI, often referred to as non-STEMI), is an unstable coronary syndrome which is differentiated from unstable angina by a subsequent rise in cardiac enzymes. ECG findings often include ST depression but do not include new pathological Q waves.

The term acute coronary syndrome is characterized by a clinical syndrome of acute ischaemic chest pain with either rest pain or a crescendo pattern of pain on minimal exertion, associated with ECG changes of ischaemia (ST elevation or depression or T inversion)

  • ST elevation myocardial infarction (STEMI) is then distinguished from other forms of acute coronary syndrome (ACS) by the presence of persistent ST elevation
    • distinction between non-STEMI and unstable angina is based on the presence (non-STEMI) or absence (unstable angina) of a rise in cardiac enzymes or troponin

NICE note that people with non-ST segment elevation acute coronary syndrome (NSTEMI) (ACS) have a high incidence of recurrent myocardial ischaemia, a similar long-term outcome to those with ST elevation myocardial infarction (STEMI), and a worse outcome than for people with unstable angina (1)

Click here for ECG examples of non-ST elevation MI



The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions. Copyright 2016 Oxbridge Solutions LtdĀ®. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions LtdĀ® receives funding from advertising but maintains editorial independence. GPnotebook stores small data files on your computer called cookies so that we can recognise you and provide you with the best service. If you do not want to receive cookies please do not use GPnotebook.