AI Article Synopsis
- The study found that segmental wall motion abnormalities (SWMA) in patients with idiopathic dilated cardiomyopathy (IDCM) are common and linked to poorer health outcomes.
- Patients with SWMA had significantly higher rates of cardiac events compared to those without, indicating that SWMA is a negative prognostic factor.
- SWMA was also associated with less improvement in left ventricular function after treatment, highlighting the need for careful monitoring and management in these patients.
Article Abstract
The clinical impact of left ventricular (LV) segmental wall motion abnormalities (SWMA) in patients with idiopathic dilated cardiomyopathy (IDCM) has not been well elucidated.Among 100 consecutive IDCM patients with follow-up visits, we enrolled 85 after excluding those with left bundle branch block and/or ventricular pacemaker implantation. LV wall motion was assessed using left ventriculography scored for 7 segments according to the American Heart Association classification as follows: 0, normokinesis; 1, hypokinesis; 2, akinesis; and 3, dyskinesis. SWMA were defined as a score dispersion of more than 1 degree among the segments.SWMA was exhibited by 26 patients. Kaplan-Meier curves demonstrated that the patients with SWMA (SWMA+) had a significantly higher cardiac event-free rate than the patients without SWMA (P < 0.001). Cox proportional hazards analysis showed that SWMA+ was an independent predictor of cardiac events (P = 0.03; hazard ratio = 3.38; 95% confidence interval [CI], 1.11-10.8). Furthermore, multiple regression analysis showed that SWMA+ was an independent predictor of decreased LV end-systolic dimension index after optimal pharmacotherapy (β = -0.24; 95%CI, -9.12 to -0.73; P = 0.02).SWMA is common in patients with IDCM and is independently associated with a poor prognosis and less morphometric and functional improvement of LV in response to pharmacotherapy.
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| http://dx.doi.org/10.1536/ihj.16-582 | DOI Listing |
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