Method of measuring respiration and respiratory effort using plural catheters
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United States of America Patent
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Sep 22, 1998
Issued Date -
N/A
app pub date -
Dec 21, 1995
filing date -
Nov 5, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of determining the existence and location of an obstruction in a respiratory track includes introducing a first catheter having a first sensing site into the body of a patient until the first sensing site is positioned so that it is distal to the obstruction. The first catheter is used to monitor respiratory effort with generated signals indicative of respiratory effort. A second catheter having a second sensing site is positioned so that the second sensing site is near the nostrils. The second catheter is used to monitor actual respiration with generated signals indicative of actual respiration. The existence of the obstruction is verified by observing respiratory effort signals without corresponding actual respiration signals.
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