remote debugging question

I am trying to debug a remote application.
I have an application, appA, running on machine A, which launches  
several other applications on machine B, via ssh like this:

To launch appB, appA generates a command sequence and runs this  
command the format of which is something like this:

ssh user@remotehost /path/to/appB arg1 arg2 arg3 > /path/to/outputfile

I have passwordless ssh setup and the output from appB is piped to  
outputfile located in /path/to...

I want to generate this same command sequence but do so such that appB  
is launched in ddd so I can remotely debug it from Machine A.

Is this possible and if so, how do I do this?
Thanks,
CD