There are multiple definitions:

1. pressure half-time(English)

   • a Doppler echocardiography measurement defined as the time (in milliseconds) required for the peak pressure gradient across a heart valve. Used to estimate mitral valve area if image quality is insufficient
   • MVA, RMS
   • Hemodynamics, Doppler technique
   • https://doi.org…jvc.2008.02.002

2. pulmonary arterial hypertension(English)

   • often not diagnosed until in late phase because of nonspecific nature of symptoms and signs. Portends a poor prognosis in aortic valve stenosis (AS). Aside from AS severity, various myocardial and vascular maladaptations determine PHT, which can develop even before symptoms are reported
   • PAH, PH, VTI, AT, ET, AS, AVA, CO, CPET, LAVI
   • Pulmonology, Hypertension
   • http://dx.doi.o…A:1010604913656
   • https://doi.org…NAHA.123.067130

3. pulmonale hypertensie(Dutch)

   • Cardiology, Pulmonology

4. pediatric heart transplantation(English)

   • AHA, CAV, CMR, ECV, MPRI
   • Pediatrics, Cardiology, Transplantation
   • https://doi.org…968-021-00803-7

5. phenytoin(English)

   • AED, GABA
   • Epilepsy or syncope
   • https://doi.org….1997.tb04523.x

6. plötzliche Herztod(German)

   • bleibt trotz erheblicher klinischer Fortschritte in der Diagnostik und Therapie eine der führenden Todesursachen
   • CAD, ICD, LVEF, SCD
   • Cardiology, Diagnostics, Pathology
   • https://doi.org…059-026-05367-9