I will share a summary of what I got. Here, I will briefly summarize the ST elevation. I share this because if it is found on ecg, there are details that must
be considered.
Ok so let start with the
definition of ST elevation.
ST elevation refers to a
finding on an ecg where in the trace in the ST segment is abnormality high
above the baseline.
Deviation of the ST segment
is measured from the end of the QRS complex (point J), or in some cases it can
be calculated 40 – 80 ms from point J. This deviation can be elevation,
depression, upsloping or downsloping. ST segment elevation is most commonly
caused by 3 causes:
- Normal variant
(early repolarization)
- Acute myocardial
ischemia (STEMI) or ventricular dyskinesis
Although not all ST-segment
elevations on the ECG are myocardial infarctions, patients with such ECG
results should be evaluated for myocardial infarction first before differential
diagnosis with other conditions.
ST elevation in myocardial
infarction
ST-segment elevation in
myocardial infarction can be seen when point J elevation in the 2 associated
leads is >2 mm (0.2 mV) in men or > 1.5 mm (0.15 mV) in women in leads
V2–V3 and/or > 1 mm (0.1 mV) in other related leads. Newly developed LBBB
can also indicate myocardial infarction, but this is difficult to apply,
especially if there is no old ECG for comparison. The finding of hyperacute T
waves can be seen early in the occurrence of myocardial infarction.
If the above is not met,
here are some features on the ECG that should be suspected of the occurrence of
myocardial infarction with ST segment elevation:
- T wave
disturbance in concomitant leads: T is elongated, inverted or high
- ST segment
depression in reciprocal leads (opposite axis)
- ST or T wave
amplitude that equals or exceeds the QRS . wave amplitude
Anamnesis, physical
examination and investigations (eg cardiac enzymes and echocardiography) as
well as referral to a cardiologist are necessary to determine whether the
patient has a myocardial infarction or not.If the clinical condition is not consistent with a myocardial
infarction, the doctor needs to consider the possibility of this differential
diagnosis and also analyze the ECG results more carefully
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