Abnormal inter-ventricular diastolic mechanical delay in patients with ST-segment elevation myocardial infarction
BMC Cardiovascular Disorders, ISSN: 1471-2261, Vol: 23, Issue: 1, Page: 494
2023
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Data from Peking University People's Hospital Update Knowledge in Heart Attack (Abnormal inter-ventricular diastolic mechanical delay in patients with ST-segment elevation myocardial infarction)
2023 OCT 20 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Cardiovascular Daily -- Current study results on heart attack have been published.
Article Description
Background: This study aimed to investigate the ventricular mechanical relaxation pattern and its clinical influence in patients with ST-segment elevation myocardial infarction (STEMI). Methods: Echocardiography was performed to measure mitral and tricuspid diastolic opening times. Left ventricular diastolic mechanical delay (LVMDd) was defined as diastolic filling of the right ventricle earlier than that of the left ventricle, and right ventricular diastolic mechanical delay (RVMDd) was defined as the right ventricular diastolic filling later than left ventricular filling. Results: Among 152 patients with STEMI, 100 (65.8%) had LVMDd, and 47 (30.9%) had RVMDd. In-hospital complications were significantly increased in patients with RVMDd (61.6% vs. 41.0%, P = 0.017). Those with RVMDd exhibited significantly lower left ventricular global longitudinal strain (11.7 ± 4.1% vs. 13.2 ± 4.0%, P = 0.035), global work index (913.8 ± 365.9 vs. 1098.9 ± 358.8 mmHg%, P = 0.005) and global constructive work (1218.6 ± 392.8 vs. 1393.7 ± 432.7 mmHg%, P = 0.021). Mitral deceleration time significantly decreased (127.4 ± 33.5 vs. 145.6 ± 41.7 ms, P = 0.012), and the ratio of early mitral inflow to early mitral annular velocity (E/E’) significantly increased [13.0(11.0–20.0) vs. 11.9(9.3–14.3), P = 0.006] in the RVMDd group. Logistic regression analysis showed that age (odds ratio [OR]:0.920; P = 0.001), brain natriuretic peptide level (OR: 1.1002; P = 0.036) and mitral E/E’ (OR: 1.187; P = 0.003) were independently associated with RVMDd. Conclusions: Delayed right ventricular filling is related to more severe left ventricular systolic and diastolic dysfunction in STEMI patients. More attention should be paid to patients with RVMDd to prevent adverse events during hospitalization.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85173332855&origin=inward; http://dx.doi.org/10.1186/s12872-023-03531-1; http://www.ncbi.nlm.nih.gov/pubmed/37803312; https://bmccardiovascdisord.biomedcentral.com/articles/10.1186/s12872-023-03531-1; https://dx.doi.org/10.1186/s12872-023-03531-1
Springer Science and Business Media LLC
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