ArticleJournal of cardiology cases2022
A case of systemic sclerosis with worsened subclinical left ventricular systolic dysfunction after pacemaker implantation.
Article in Journal of cardiology cases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A 58-year-old man suffering from systemic sclerosis was admitted to our hospital because of heart failure. He developed atrioventricular block 4 months previously and had a pacemaker implanted, after which left ventricular wall motion markedly worsened. The global longitudinal strain was already decreased before the onset of atrioventricular block, although the left ventricular ejection fraction was normal. Right ventricular pacing was suspected to have caused overt left ventricular systolic dysfunction. Therefore, right ventricular pacing was upgraded to cardiac resynchronization therapy. After this change, the left ventricular ejection fraction improved to almost normal, but global longitudinal strain remained decreased. The findings in our case suggest that some patients with systemic sclerosis already have subclinical left ventricular systolic dysfunction before the onset of atrioventricular block. Additionally, right ventricular pacing may cause further deterioration of left ventricular systolic function and heart failure. Learning objective: The possibility of subclinical left ventricular systolic dysfunction associated with systemic sclerosis should be considered when implanting a pacemaker. Speckle-tracking echocardiography may also be useful in the management of patients with systemic sclerosis.
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