Diurnal variations in biomarkers used in cardiovascular medicine: clinical significance.

ventricular MI suppresses this ST segment elevation in the precordial leads and yields an ST segment elevation in leads II, III, and aVF.2-4 Massive STsegment elevation in precordial and inferior leads in RVMI has also been observed but is extremely rare.5 Thus, ST elevation in precordial leads should not exclude an infarction of the right ventricle that demands a treatment different from that of the anterior infarction. In conclusion, isolated RV branch occlusion may be accompanied by ST-segment elevation in left precordial leads. This should not be assumed to be indicative of anterior MI in patients presenting with acute inferior MI. It is important that physicians and, especially, interventional cardiologists be aware of this entity and protect patients from unnecessary interventions.