maybe you could use individual coping- effective. this man is coping effectively with the situation aeb:
1. he is rational, and did not go ama, or d/c himself. he is able to realize that even though it is a frustrating and inappropriate situation he is in, he knows he would do himself harm (finacially) if he were to just leave.
2. he is able to verbally express his thoughts and to get his frustrations out by verbally venting.
your interventions could be therapeutic communication via active listening, reflecting, restating, using body language which shows you are listening to him and validating his feelings ( make eye contact, nod frequently, do not cross your arms, tap your foot or look at your watch when he is talking).
a measurable goal would be that he is able to maintain his composure until the time of d/c.
you could also take this time to determine the pt's knowledge level and determine his educational needs. you could educate the pt on his medical condition, and what he needs to do to take care of himself. could you add "knowledge defecit"? this extra time presents a great pt teaching opportunity for you.