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(1) Arterial oxygen tension at rest (sitting or standing) or during exercise and simultaneously determined arterial PCO2 equal to, or less than, the values specified in the following table:
Arterial PCO2 (mm. Hg) | Arterial PO2 equal to or less than (mm. Hg) |
---|---|
30 or below | 65 |
31 | 64 |
32 | 63 |
33 | 62 |
34 | 61 |
35 | 60 |
36 | 59 |
37 | 58 |
38 | 57 |
39 | 56 |
40 or above | 55 |
or
(2) Cor pulmonale with right-sided congestive failure as evidenced by peripheral edema and liver enlargement, with:
(A) Right ventricular enlargement or outflow tract prominence on X-ray or fluoroscopy; or
(B) ECG showing QRS duration less than 0.12 second and R of 5 mm. or more in V1 and R/S of 1.0 or more in V1 and transition zone (decreasing R/S) left of V1;
or
(3) Congestive heart failure with signs of vascular congestion such as hepatomegaly or peripheral or pulmonary edema, with:
(A) Cardio-thoracic ratio of 55 percent or greater, or equivalent enlargement of the transverse diameter of the heart, as shown on teleroentgenogram (6-foot film); or
(B) Extension of the cardiac shadow (left ventricle) to the vertebral column on lateral chest roentgenogram and total of S in V1 or V2 and R in V5 or V6 of 35 mm. or more on ECG.
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Last reviewed or modified Wednesday Sep 17, 2008 |