Key result
Rescue CRT rapidly improves symptoms and LV systolic function in a refractory heart failure case.
Why the study?
Does cardiac resynchronization therapy improve symptoms and left ventricular function in a patient with pacing-induced refractory heart failure?
Case Report (n=1)
Does cardiac resynchronization therapy improve symptoms and left ventricular function in a patient with pacing-induced refractory heart failure?
3D speckle tracking echocardiography is useful for identifying and monitoring patients with pacing-induced heart failure who may benefit from rescue cardiac resynchronization therapy.
We report the case of a 73-year-old man admitted for refractory heart failure following implantation of a dual-chamber pacemaker. Three-dimensional (3D) echocardiography with speckle tracking area strain identified severe left ventricular (LV) dysfunction and LV dyssynchrony following right ventricular pacing. As the patient's clinical condition rapidly worsened despite optimal medical treatment, a cardiac resynchronization therapy (CRT) pacemaker was successfully implanted as rescue therapy. Symptoms rapidly regressed and echocardiographic assessment following CRT demonstrated an immediate improvement in LV systolic function, confirmed at 9-month follow-up with evidence of reverse remodeling. New imaging technologies such as 3D echocardiography with speckle tracking area strain may help to identify and follow up patients who will benefit from CRT as rescue therapy.
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Guiot et al. (2012) conducted a case report in Refractory heart failure following implantation of a dual-chamber pacemaker (n=1). Cardiac resynchronization therapy (CRT) pacemaker was evaluated on Symptoms and LV systolic function. Implantation of a cardiac resynchronization therapy pacemaker as rescue therapy in a 73-year-old man with refractory heart failure led to rapid symptom regression and improved LV systolic function.
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