What is non Q wave myocardial infarction?

Non–Q-wave myocardial infarction has been defined as acute myocardial infarction without a new-onset deep Q-wave on the ECG after day(s) of evolution, and because of the anatomopathological concept of infarction is usually related to necrosis, it results paradoxical to consider this widely known clinical and …

How is lateral myocardial infarction treated?

Prehospital fibrinolytic therapy by the administration of tissue-type plasminogen activator (t-PA), aspirin, and heparin may be given to patients with bona fide MI by paramedics, as guided by electrocardiographic findings, within 90 minutes of the onset of symptoms.

What does non Q wave myocardial infarction mean?

Non-Q wave myocardial infarction (NQWMI) The terms Q wave MI, non-Q wave MI, transmural MI and non-transmural MI are no longer recommended for use. Instead, acute coronary syndromes are classified as unstable angina, non-ST elevation myocardial infarction and ST elevation myocardial infarction.

Is there a difference between Q wave and non-Q wave mi?

The terms Q wave MI, non-Q wave MI, transmural MI and non-transmural MI are no longer recommended for use. Instead, acute coronary syndromes are classified as unstable angina, non-ST elevation myocardial infarction and ST elevation myocardial infarction.

What do QS waves indicate in proximal Lad disease?

QS waves in the anteroseptal leads (V1-4) with poor R wave progression indicate prior anteroseptal infarction. This pattern suggests proximal LAD disease with an acute occlusion of the first diagonal branch (D1). There is subtle ST elevation in the high lateral leads (I and avL).

When do Q waves develop in transmural infarction?

Pathologic Q waves are indicative of transmural myocardial infarction (see Chapter 18 ). They develop within a few hours of infarction and are permanent. The R wave is the first upward deflection that appears in the QRS complex. From leads V 1 through V 4 the R wave normally increases in amplitude and duration.