Predicted Heart Mass Calculator (PHM)

Estimate donor/recipient heart mass for optimal cardiac transplant sizing

The global unit selector only affects unanswered questions
1.Donor gender?
2.Donor age?
3.Donor height?
4.Donor weight?
5.Recipient gender?
6.Recipient age?
7.Recipient height
8.Recipient weight?
Created by

1. Donor gender?

Created by
0/8 completed

About this Calculator

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.

Predicted heart mass is the optimal metric for size match in heart transplantation. J Heart Lung Transplant.

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.

Donor predicted heart mass as predictor of primary graft dysfunction. J Heart Lung Transplant.

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.

Cardiac size and sex-matching in heart transplantation : size matters in matters of sex and the heart. JACC Heart Fail.

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

Contributed By:
  • Luke Masha, MD/MPH
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