Systolic left ventricular apical bulging after biventricular pacing mimicking takotsubo cardiomyopathy

Abstract

Resolution of the issue of nonresponsiveness to cardiac resynchronization therapy (CRT) remains crucial to the successful treatment of conduction disturbances in heart failure. In this study, a patient with refractory heart failure including left bundle branch block was treated via surgical CRT. The epicardial left ventricular (LV) lead, implanted using thoracoscopic guidance, was unexpectedly located on the apical side. Echocardiographic findings of the LV motion mimicked takotsubo cardiomyopathy. The LV lead was successfully re-implanted along a lateral branch of the cardiac vein using an endovascular approach, resulting in restored contractility and reversal of the LV remodeling.

Continuous carbon fiber recycling technology using the electrolytic sulfuric acid method

“…[4][5][6] Resin Decomposition Mechanism by Sulfuric Acid-Derived Oxidative Active Species. 7,8 The oxidative active species generated by the electrolysis of sulfuric acid are peroxymonosulfuric acid and peroxodisulfuric acid. These two oxidative active species contribute to the decomposition of the resin, each through a different mechanism.…”