Predicted Heart Mass Calculator (PHM)

Estimate donor/recipient heart mass for optimal cardiac transplant sizing


The PHM ratio is the optimal metric for sizing donor hearts for potential transplant recipients and outperforms the use of weight or height matching alone. Donor/Recipient PHM ratios less than 0.86 may be associated with sub-optimal transplant outcomes.


Kransdorf EP, Kittleson MM, Benck LR, Patel JK, Chung JS, Esmailian F, Kearney BL, Chang DH, Ramzy D, Czer LSC, Kobashigawa JA.

2019 Feb;38(2):156-165. doi: 10.1016/j.healun.2018.09.017. Epub 2018 Sep 27.

Gong TA, Joseph SM, Lima B, Gonzalez-Stawinski GV, Jamil AK, Felius J, Qin H, Saracino G, Rafael AE, Kale P, Hall SA.

2018 Jul;37(7):826-835. doi: 10.1016/j.healun.2018.03.009. Epub 2018 Mar 17.

Reed RM, Netzer G, Hunsicker L, Mitchell BD, Rajagopal K, Scharf S, Eberlein M.

2014 Feb;2(1):73-83.

The Predicted Heart Mass Calculator (PHM) calculator is created by QxMD.

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1. Donor gender?

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