No abstract

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Implantation of a cardiac resynchronization therapy (CRT) device is usually scheduled in the compensated phase of heart failure; however, procedural safety may be sometimes disturbed in the decompensated phase. We report a case of a successful semi-urgent implantation of a CRT device temporary assisted with Impella in a patient with the decompensated phase of severe heart failure dependent on inotropic agents and who cannot maintain the supine position. Impella assistance with left ventricular (LV) unloading and maintenance of end-organ perfusion contributed to early recovery from acute heart failure. Furthermore, an acute effect of mechanical resynchronization by biventricular pacing plays an important role in weaning from the mechanical support or inotropic dependence. These mutual effects of mechanical support and CRT might contribute to a decrease in LV end-diastolic pressure and to a remarkable early recovery from a severely decompensated condition.

A 48-year-old woman with advanced ovarian cancer was diagnosed with pulmonary tumor thrombotic microangiopathy (PTTM) by antemortem pulmonary wedge aspiration cytopathology. Despite the initiation of anti-cancer treatment, she unfortunately died due to progressive respiratory failure. Histopathology of the autopsied lung revealed multiple tumor embolization with fibrin-rich clot and fibro-cellular intimal proliferation at the pulmonary arteriole. The embolized tumor showed strong immune-positivity for pro-thrombotic and fibrotic factors (tissue factor and vascular endothelial growth factor), suggesting the underlying mechanisms of PTTM development. This case suggests that a quick antemortem diagnosis and the early induction of specific treatments might ensure a better prognosis of PTTM.