Key result
Serum sodium and potassium variations correlate with RWMA frequency and distribution in anterior STEMI.
Why the study?
Assessing regional wall motion abnormalities in the myocardium may aid early diagnosis and treatment of chronic remodeling in STEMI patients.
Cross-Sectional (n=217)
No
Electrolyte imbalances, particularly in sodium and potassium, are associated with the distribution and severity of regional wall motion abnormalities beyond the LAD territory in patients with anterior STEMI.
Electrolyte variations associate with multi-site RWMA in anterior STEMI; hypothesis-generating and should not yet change practice.
Assessing regional wall motion abnormalities (RWMA) in the myocardium may provide early diagnosis and treat chronic remodeling in STEMI patients. We assessed RWMA in 217 subjects with anterior STEMI admitted to Era University Hospital in Lucknow, UP, India. Besides abnormalities in the LAD territory, sub-sets of patients exhibited diffuse regional myocardial dysfunction. Interestingly, variations in serum electrolytes, specifically sodium and potassium, significantly affected the distribution and frequency of RWMA. Notably, RWMA occurred in the basal septum, apical septum, apex, and lateral wall in the anterior STEMI group. Additionally, the rate of regional dysfunction varied with serum urea and creatinine levels. This suggests that anterior STEMI can manifest myocardial abnormalities beyond the LAD territory. These findings indicate that ST-segment elevation might not be specific, possibly influenced by electrolyte changes affecting cardiac rhythm. Therefore, diagnosing and correcting region-specific wall motion abnormalities and electrolyte imbalances may improve outcomes in STEMI patients.
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Rizvi et al. (2023) conducted a cross-sectional in Anterior ST-elevation myocardial infarction (STEMI) (n=217). Electrolyte imbalance (serum sodium, potassium, urea, creatinine) vs. Normal electrolyte levels was evaluated on Incidence and distribution of regional wall motion abnormalities (RWMA). In patients with anterior STEMI, 92% exhibited regional wall motion abnormalities at multiple sites, the distribution and frequency of which were significantly affected by variations in serum sodium and potassium levels.
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