Grateful to be a PT

Before I left the hospital today, I checked up on one of my patients that I noticed had been transferred to the Medical ICU. I found his chart outside his room, and was looking through it to try to figure out what had happened to send him there.
While standing there, 2 residents coming from different directions stopped in the hallway almost next to me.

And this is what I overheard:
Resident Guy: What's this?
Resident Gal: Mr. [So and So]'s blood gases. ...
(silence as they solemnly review them together)
Then followed some unintelligible conversation, partly because I was doing my own thing, partly because I didn't see what they were talking about. Basically, they were discussing what they might do next.

Attending Physician (or Senior Resident, who knows which Big Shot) approaches.
Big Shot: What are you guys thinking about over here? ...looks at the paper they're examining. Who is this?
Resident Gal: Mr. [So and So]. I guess we have to [insert unintelligible phrase here]
Resident Guy leaves

Resident Gal, confiding to the Big Shot: I just hate it. I hate my job with him. I'm just basically slowly, ...slowly, ...
Big Shot: ...slowly letting him die?
Resident 2: Yes! And it's just awful. I feel so helpless.
Big Shot (sympathetic): It's a tough job. But it is your job. And you're doing really well. Sometimes the job is to let them die.

They slowly begin to walk away. I think Resident Gal noticed my thoughtful glance in her direction, because she quickly added, "Not this patient (referring to the guy whose chart I was holding), in case you were wondering!"

Grateful that "letting someone die" is not in the direct job description of a PT, I finished reading the chart, closed my binder for the week and headed home.