EXHIBIT A JOINT FILING AGREEMENT The undersigned hereby consent to the joint filing by any of them of a Statement on Schedule 13D and any amendments thereto, whether heretofore or hereafter filed, relating to the securities of NitroMed, Inc., and...

                                    EXHIBIT A

                               JOINT FILING AGREEMENT



The undersigned hereby consent to the joint filing by any of them of a
Statement on Schedule 13D and any amendments thereto, whether heretofore or
hereafter filed, relating to the securities of NitroMed, Inc., and affirm that
this Schedule 13D is being filed on behalf of each of the undersigned.


Dated: January 16, 2004



RHO CAPITAL PARTNERS, INC.

By:/s/ Xxxxxx Xxxx

Name:  Xxxxxx Xxxx

Title:  Chief Executive Officer



XXXXXX XXXX

/s/ Xxxxxx Xxxx

Name:  Xxxxxx Xxxx



XXXXX XXXXXXX

/s/ Xxxxx Xxxxxxx

Name:  Xxxxx Xxxxxxx



XXXX XXXXXXX

/s/ Xxxx Xxxxxxx

Name:  Xxxx Xxxxxxx