| PMH | past medical history; posteromedial hypothalamus |
|---|---|
| PPH | past pertinent history; persistent pulmonary hypertension; phosphopyruvate hydratase; postpartum hem... |
| PRH | past relevant history; prolactin releasing hormone |
| PSH | past surgical history; postspinal headache |
| Px | past history; physical examination; pneumothorax; prognosis |