What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: Anterior ST-elevation myocardial infarction (STEMI) (n=217). Intervention: Electrolyte imbalance (serum sodium, potassium, urea, creatinine) vs. Normal electrolyte levels. Primary outcome: Incidence and distribution of regional wall motion abnormalities (RWMA).

What does this research mean for the field?

In patients with anterior STEMI, regional wall motion abnormalities frequently occur at multiple sites beyond the LAD territory, and their distribution and frequency are significantly influenced by variations in serum sodium and potassium levels. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

November 30, 2023Open Access

Influence of electrolyte imbalance on regional wall motion abnormalities in STEMI patients of North Indian origin

Key Result

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.

Study Design

Type

Cross-Sectional (n=217)

Multicenter

Structured PICO

Population

217 patients aged 30-91 years with anterior STEMI admitted to Era University Hospital in Lucknow, UP, India.

Outcome

Distribution and frequency of regional wall motion abnormalities (RWMA) assessed by 2D echocardiographysurrogate

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.

Limitations

Cross-sectional study design is unable to establish causal relationships.
Focuses on a specific ethnic population, requiring more diverse and extensive samples for generalization.
The specific mechanisms behind the associations between electrolytes, myocardial abnormalities, and STEMI remain unclear.

Abstract

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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Cite This Study

Rizvi et al. (Thu,) führten eine Querschnittsstudie bei anterioren ST-Hebungsmyokardinfarkten (STEMI) (n=217) durch. Der ElektrolytUngleichgewicht (Serumnatrium, Kalium, Harnstoff, Kreatinin) vs. normale Elektrolytwerte wurde hinsichtlich Inzidenz und Verteilung von regionalen Wandbewegungsanomalien (RWMA) untersucht. Bei Patienten mit anterioren STEMI zeigten 92% regionale Wandbewegungsanomalien an mehreren Stellen, deren Verteilung und Häufigkeit signifikant durch Variationen der Serum-Natrium- und Kaliumwerte beeinflusst wurden.

synapsesocial.com/papers/6a1ab8db7ff99bba06461509 https://doi.org/https://doi.org/10.3389/fcvm.2023.1223954

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