There are multiple definitions:

1. primary/plexogenic pulmonary hypertension(English)

   • IPAH, SPH
   • Pulmonology, Hypertension

2. post-partum hemorrhage(English)

   • a leading obstetric emergency, causing 25% maternal deaths worldwide. Common causes (4 T) include uterine atony (tone), preeclampsia (thrombin), perineal laceration (trauma) and retained placenta (tissue)
   • RPOC
   • Pregnancy, Obstetrics
   • https://doi.org…2884-020-2719-3

3. prepositus hypoglossi [nucleus](Latin)

   • separate PPH projections suggest that two subdivisions exist within the dorsolateral PAG
   • HRP, PAG, WGA
   • Neurons
   • https://doi.org….1002/cne.20728