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(Chest. 1969;55:101-104.)
© 1969 American College of Chest Physicians

Clinical Application of the Flow-Volume Loop

Bill D. Stout MC, USN1; Leslie Wiener MC, USN2; Donald W. Dery Ph.D.3; and J. William Cox MC, USN, F.C.C.P.4

1 Head, Pulmonary Function Section, Naval Hospital, Philadelphia and Instructor in Medicine, Jefferson Medical College, Philadelphia
2 Head, Cardiopulmonary Branch, Naval Hospital, Philadelphia and Assistant Professor of Medicine, Jefferson Medical College, Philadelphia
3 Leader, Respiratory Physiology Research Team, Life Sciences Research Group, Aerospace Crew Equipment Department, Naval Air Development Center, Johnsville, Warminister, Pennsylvania
4 Chief of Medicine and Director of Research, Naval Hospital, Philadelphia: Associate Professor of Medicine, Jefferson Medical College, Philadelphia

A convenient method for recording pulmonary function which allows for rapid graphic bedside analysis was presented. The method involves recording flow-volume (V-V) loop, in correct alignment to a previously determined FRC. FRC was measured by a rapid nitrogen dilution method. This method of recording pulmonary function affords a composite of TLC and all subdivisions with corresponding flow which can be recorded in a patient's chart similar to ECGs. Normal and pathologic loop patterns are illustrated. A high statistical correlation of volumes and flows by the method was found when compared to conventional spirograms in 90 patients.






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Copyright © 1969 by the American College of Chest Physicians.