Transthoracic impedance monitoring in patients with heart failure

Patients with congestive heart failure are frequently admitted to the hospital due to episodes of pulmonary congestion. As a strategy to prevent hospitalizations, the patients are closely followed in clinic and are asked to weigh themselves daily. The transthoracic impedance and other physiologic data can be monitored remotely and its use of great help in the management of these patients. The transthoracic impedance, which can be measured by an internal defibrillator, has been proven to be more sensitive than daily weights in predicting heart failure admissions.
The present article reviews the current data surrounding this technology and its use in the clinical setting.
Keywords: Impedance (transthoracic) ; Monitoring ; Heart failure ; Implantable defibrillators ; Cardiac resynchronization therapy