Case #4 - A 50 year old male presents with syncope and shock. Room air ABG on admission are shown below.
| SD | Mean | 02 Sat. | |||
| RA (mmHg) | 15 | .48 | CO (L/m) | 2.5 | |
| RV (mmHg) | 45/0 | .48 | SVR (units) | 18 (1440) | |
| PA (mmHg) | 45/20 | 28 | .49 | PVR (units) | 8.4 (670) |
| PCWP(mmHG) | 7 | .89 | |||
| BP (mmHG) | 80/50 | 60 | |||
| FI02 | pH | P02 | 02 Sat. | PC02 | |
| ABG | .21 | 7.32 | 59 | .89 | 32 |
| Mixed Venous | 7.28 | 28 | .49 | 38 | |
| AV-02 Diff (Vol%) 8.0 | |||||
What is the likeliest diagnosis? Answer