Method and apparatus for assessing fluid level in lungs
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United States of America Patent
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Apr 27, 2010
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app pub date -
Mar 21, 2005
filing date -
Mar 21, 2005
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Abstract
The invention relates to an apparatus and method to assess the fluid level in lungs. An implantable medical device or external monitor is used to sense or monitor the patient's respiratory patterns to identify the presence of periodic breathing or Cheyne-Stokes Respiration (CSR) which is common in patients with congestive heart failure. A fluid index is used to assess the severity of congestive heart failure in a patient. A ratio of Δ blood gas/Σtotal lung volume can be used to determine the lung fluid index.
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