1. Volume 74, Issue 5, Pages 596-599 (November 1978)
Cyanosis in Uncomplicated Atrial Septal Defect with Normal Right Cardiac and Pulmonary Arterial Pressures 
Russell A. Ciafone, M.D., Julian M. Aroesty, M.D., Ronald M. Weintraub, M.D., Paul J. LaRaia, M.D., Sven Paulin, M.D. 
CHEST 
Volume 74, Issue 5, Pages (November 1978)
DOI: /chest
Copyright © 1978 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Chest roentgenograms. Posteroanterior view (left) and lateral view (right) are within normal limits.
CHEST  , DOI: ( /chest )
Copyright © 1978 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Standard 12-lead ECG, showing sinus arrhythmias, peaked P waves suggestive of right atrial enlargement, and nonspecific abnormalities of T waves.
CHEST  , DOI: ( /chest )
Copyright © 1978 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Right ventricular pressure tracing obtained at catheterization. Left panel is recorded at paper speed of 25 mm/sec, with one-second markings. Bight panel is recorded at 75 mm/sec, with 0.04-second markings. Note early diastolic dip, with diastolic plateau of 6 to 8 mm Hg. The “a” wave (arrowheads) is prominent, ranging from 10 to 16 mm Hg. Right ventricular end-diastolic pressure ranged from 8 to 12 mm Hg.
CHEST  , DOI: ( /chest )
Copyright © 1978 The American College of Chest Physicians Terms and Conditions