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[Normalization of ECG after right ventricular infarct]
1Csongrád Megyei Tanács Tüdökórház-Gondozóintézet, Kardiológiai Rehabilitációs Osztály, Deszk.
Insights
Right ventricular infarction (RVMI) with left ventricular necrosis shows slow ECG normalization. Most patients had persistent QRS changes and no ST elevation after 6 months, regardless of necrosis location or age.
Area of Science:
- Cardiology
- Electrophysiology
- Myocardial Infarction
Context:
- Right ventricular infarction (RVMI) often occurs with left ventricular necrosis (LVN).
- Electrocardiogram (ECG) changes are crucial for diagnosing and monitoring myocardial infarction.
- Understanding long-term ECG recovery in RVMI patients is important for prognosis.
Purpose:
- To evaluate the long-term (6-month) electrocardiogram (ECG) changes in patients with right ventricular infarction (RVMI) and associated left ventricular necrosis (LVN).
- To assess the normalization of QRS morphology and ST segment alterations in the V3-4R leads over a 6-month follow-up period.
- To determine if ECG recovery patterns differ between anterior and inferior LVN in RVMI patients or are influenced by patient age.
Summary:
- A 6-month ECG follow-up was conducted on 65 patients with RVMI and LVN (anterior n=17, inferior n=48).
- QRS morphology and ST segment alterations were assessed during rehabilitation and at 6 months.
- By 6 months, 18% of patients showed QRS normalization in V3-4R, and no ST elevation was observed. Normalization rates were similar between anterior and inferior LVN groups and independent of age.
Impact:
- Provides insights into the long-term ECG recovery trajectory following RVMI with LVN.
- Highlights the limited normalization of specific ECG parameters (QRS in V3-4R) over 6 months.
- Suggests that the extent of LVN (anterior vs. inferior) and patient age do not significantly influence short-term ECG recovery in this cohort.
Abstract:
6-month ECG follow-up was carried out in 65 patients with right ventricular infarction accompanied by anterior (n = 17) and inferior (n = 48) left ventricular necrosis. QRS morphology and ST segment alterations were evaluated in the period of rehabilitation and 6 months later. By the end of the 6th month QRS in V3-4R returned to normal in 12 patients (18%) and there was no ST elevation in none case by this time. Normalization of QRS in V3-4R was about the same in the two groups and it was independent from the age of patients.