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Relationship between arterial pH and PaCO2 at the conclusion of apnea test
| Value at end of AT | PaCO2 > 60 or > 20 mm Hg above baseline (positive AT) ‡, n | PaCO2 < 60 or < 20 mm Hg above baseline (inconclusive AT) ‡, n |
|---|---|---|
| pH < 7.30 | 83 | 3 |
| pH ≥ 7.30 | 4 | 1 |
| Total | 87 | 4 |
AT apnea test, BD brain death
‡Seven patients were excluded from analysis (4 due aborted AT due to complication, and 3 due unavailable pH data). Patients with inconclusive AT underwent ancillary studies to confirm BD
