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Deleterious effect of right ventricular pacing in patients with cardiac transthyretin amyloidosis: potential clinical benefit of cardiac resynchronization therapy

机译:右心室起搏在心脏逆转蛋白淀粉样蛋白症患者中的有害影响:心脏重新同步治疗的临床效益

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Background Cardiac amyloidosis involvement is associated with a detrimental outcome including frequent arrhythmias, heart failure, and conduction disturbances which may need permanent pacing. Cases summary We report two cases of patients with transthyretin amyloidosis (ATTR) who developed heart failure and depressed left ventricular ejection fraction (LVEF) following permanent right ventricular (RV) pacing but highly responded to cardiac resynchronization therapy (CRT). Discussion The impact of RV pacing and CRT in cardiac amyloidosis is not known. In our cases, the detrimental effect of permanent RV pacing on left ventricular (LV) systolic function and heart failure symptoms was suggested by both permanent RV pacing mediated functional and LV function decline and LV systolic dysfunction reversal following CRT along with QRS width reduction. Whether cardiac resynchronization should be readily recommended in ATTR patients who need ventricular pacing whatever the LVEF deserves further investigation.
机译:背景技术心脏淀粉样变性受累与可能需要永久起搏的频繁心律失常,心力衰竭和传导扰动的有害结果相关。病例概要我们报告了两种患者的Transthyretin淀粉样蛋白症(attr),其在永久性右心室(RV)起搏后,患有心力衰竭和抑郁左心室喷射分数(LVEF),但高度反应的心脏再同步治疗(CRT)。讨论RV起搏和CRT在心脏淀粉样症中的影响尚不清楚。在我们的案例中,通过永久性RV起搏介导的功能和LV功能下降和LV收缩功能障碍逆转,在CRT和QRS宽度降低之后,提出了永久性RV起搏对左心室(LV)收缩功能和心力衰竭症状的不利影响。无论LVEF是否值得进一步调查,是否应该在需要心室起搏的attr患者中易于建议心脏重新同步。

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