1. Prospective Study of Controlled Oxygen Therapy
Robert Gilbert, M.D., F.C.C.P., Kumar Ashutosh, M.D., F.C.C.P., J. Howland Auchincloss, M.D., F.C.C.P., Shamsuddin Rana, M.D., David Peppi, B.S. 
CHEST 
Volume 71, Issue 4, Pages (April 1977)
DOI: /chest
Copyright © 1977 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Three types of magnetometric tracings. Spirometrie signal, representing air flow at mouth, has been omitted for simplicity. In all cases, air flow signal was synchronous with chest movement signal. In both chest and abdominal signals, upward deflection represents expansion, that is, coils on front and back moving away from each other. Thus, upward deflection of chest signal represents inspiration. A, Synchronized breathing pattern. This pattern is seen in all normal subjects and most patients with chronic obstructive airway disease. B, Moderately asynchronous pattern. Chest and abdomen move together in inspiration and early expiration, but later in expiration, extra movements are seen in abdomen which do not correspond to chest movements or flow of air. C, Severely asynchronous pattern. In this case, extra abdominal expansion in expiration is greater than inspiratory expansion.
CHEST  , DOI: ( /chest )
Copyright © 1977 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Arterial blood gas levels on admission. Solid circles represent successes (S); open circles represent failures (F). Straight Unes represent means.
CHEST  , DOI: ( /chest )
Copyright © 1977 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Spirometric values on admission. Solid circles represent successes (S); open circles represent failures (F). Straight lines represent means.
CHEST  , DOI: ( /chest )
Copyright © 1977 The American College of Chest Physicians Terms and Conditions