Method and apparatus for non-invasive evaluation of diaphragmatic function
摘要
A method for non-invasive evaluation of diaphragmatic function in humans measures the thickness of the diaphragm in real time with an ultrasonic device, and displays the variations of diaphragm thickness versus time. Formulae are given for calculating a quantitative value for the reserve fatigue capacity of a patient's diaphragm from data obtained by measuring the time limits for maintaining a constant breathing pattern on the display at two different pressure differentials in series with the patient's airways. An apparatus for displaying the diaphragm thickness in real time is also described. The method can be used both on healthy patients and on patients with so severe breathing dysfunctions that they require breathing support from respirators.
申请公布号
US5448995(A)
申请公布日期
1995.09.12
申请号
US19940195500
申请日期
1994.02.14
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
发明人
YOST, WILLIAM T.;WAIT, JULIETTE L.;NAHORMEK, PATRICIA A.;CANTRELL, JOHN H.;HANNA-HAWVER, PAMELA D.