Why the study?
Does intrathoracic impedance monitoring improve early detection of impending decompensation in patients with chronic heart failure?
Does intrathoracic impedance monitoring improve early detection of impending decompensation in patients with chronic heart failure?
Intrathoracic impedance monitoring is a promising device-based method for early detection of fluid accumulation in heart failure, though large-scale trials are needed to confirm its clinical utility.
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May support early decompensation alerts in select HF patients; leaves open confirmation of clinical utility in large randomized trials.
In patients with chronic heart failure, detecting signs and symptoms of worsening congestion early enough to prevent hospitalization is an ongoing challenge. Intrathoracic impedance monitoring is a new, device-based method for detecting fluid accumulation in the lungs. Small clinical trials have shown that it may provide an early warning of impending decompensation and may be useful when used in conjunction with routine clinical assessment in guiding diuresis during hospitalization. Additional large-scale, prospective, randomized clinical trials are currently underway to further evaluate its clinical utility. This review discusses the basic concepts underlying intrathoracic impedance monitoring, the clinical evidence supporting its use, and some common pitfalls to avoid when interpreting intrathoracic impedance data.
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William T. Abraham (2007) studied this question.
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