Increased Intrathoracic Impedance May Predict Adverse Events in LVAD Patients

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We describe a 36-year-old male with a HeartWare LVAD and a Medtronic Virtuoso DR pacemaker in whom increased intrathoracic impedance preceded suction events, low LVAD flows, symptoms of a heart failure exacerbation, and hospitalization. Measurement of intrathoracic impedance may identify fluid shifts prior to symptoms and predict adverse events in patients with an LVAD.

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