There are multiple definitions:

1. peptide histidine methionine(English)

   • see incretin

2. proportional hazards model(English)

   • Statistics

3. predicted heart mass(English)

   • to mitigate the effect of size mismatch on survival, analysis matches male and female recipients based on predicted heart mass, with formulas derived from magnetic resonance imaging literature. Categories of PHM are defined in quintiles: first quintile (PHM donor/recipient ratio ≤0.967), second quintile (0.967<PHM ratio≤1.07), third quintile (1.07<PHM ratio≤1.16), fourth quintile (1.16<PHM ratio≤1.28), and fifth quintile (PHM ratio >1.28
   • HTX, PLBM, OHT, DRI, ECMO, HFpEF, HFrEF, HLA, IABP, IMPACT, ISHLT, LVAD, CSM, PGD, SOT, UNOS, BMI, IVSd, LVIDd, LVM, mLVM, pLVM, PWT, PVR
   • Cardiology, Transplantation, Gender aspects, Ratio-based metric
   • https://doi.org…cvs.2021.01.001
   • https://doi.org…sur.2011.12.055
   • https://doi.org…897-024-00670-0
   • https://qsushin…LVM_Calculator/
   • https://doi.org…chf.2024.10.001