How serious is an inferior infarct?
Traditionally, inferior MIs have a better prognosis than those in other regions, such as the anterior wall of the heart. The mortality rate of an inferior wall MI is less than 10%.
Why we do right sided ECG in inferior MI?
All patients with chest pain should receive a 12-lead ECG early in the patient encounter. When the patient is suffering acute inferior STEMI a right-sided 12-lead ECG can help to identify right ventricular infarction.
Is an inferior MI right sided?
Acute myocardial infarction (MI) involving only the right ventricle is an uncommon event. More often, right ventricular MI (RVMI) is associated with acute ST-elevation MI of the inferior wall of the left ventricle and occurs in 30 to 50 percent of such cases [1-6].
How is inferior infarct treated?
FIELD TREATMENT Fluid infusion is the mainstay of treatment for patients with RVI. In the case of an inferior MI with right ventricular involvement, the administration of nitroglycerin and morphine could cause an abrupt drop in blood pressure.
How is inferior infarct diagnosed?
Inferior STEMI is usually caused by occlusion of the right coronary artery, or less commonly the left circumflex artery, causing infarction of the inferior wall of the heart [6, 7]. Upon ECG analysis, inferior STEMI displays ST-elevation in leads II, III, and aVF.
Can an EKG detect past heart attacks?
An EKG can help identify a previous heart attack by screening for abnormalities in the electrical activity of your heart. EKG results are often best used in combination with blood tests and imaging techniques to reduce the chances of a false positive.
How is right ventricular infarction diagnosed?
Diagnosis is confirmed by the presence of ST elevation in the right-sided leads (V3R-V6R)
- V1 is the only standard ECG lead that looks directly at the right ventricle.
- Lead III is more rightward facing than lead II and hence more sensitive to the injury current produced by the right ventricle.
How is right ventricular infarction treated?
It is important to recognize the signs of a right ventricular infarct because treatment differs significantly between patients with an RVI and those with other infarct sites. The traditional field treatment for an MI is aspirin and oxygen, with nitroglycerin and morphine for pain (often referred to as MONA).
What would be expected when evaluating an ECG for an inferior infarction?
Upon ECG analysis, inferior STEMI displays ST-elevation in leads II, III, and aVF. There are subtle differences in the ECG pattern depending on the artery occluded. Reciprocal changes (ST-segment depression) may be seen in lead aVL [6].
How is right ventricular infarction (RV infarction) indicated in inferior STEMI?
In patients with inferior STEMI, right ventricular infarction is suggested by: ST elevation in V1 and ST depression in V2 (highly specific for RV infarction) Isoelectric ST segment in V1 with marked ST depression in V2 Diagnosis is confirmed by the presence of ST elevation in the right-sided leads (V3R-V6R)
Does right ventricular involvement predict mortality in inferior myocardial infarction?
Inferior Myocardial Infarction With Right Ventricular Involvement Right Ventricular involvement in acute inferior MI is an independent predictor of major complications and in-hospital death, as this case demonstrates.
What is an example of right ventricular infarction?
Another example of right ventricular infarction in the context of inferior STEMI: There is ST elevation in V4R. This ECG shows a full set of right-sided leads (V3R-V6R), with V1 and V2 in their original positions.
How is acute inferior wall mi diagnosed in right ventricular infarction?
Acute inferior wall MI with right ventricular (RV) involvement is diagnosed, and primary percutaneous coronary intervention (PCI) is scheduled. Figure 2 – This ECG with the precordial leads switched to the right side of the chest shows Q waves and ST elevation in V 4 R through V 6 R. These findings are consistent with right ventricular infarction.