That's changing the situation. I don't think it's comparable. In the specific trolley problem instance, I would pull the lever. In the situation you describe I wouldn't.
The difference between the two matters. The switch being one way is arbitrary and ultimately all individuals are in the same position. However, all 5 of your patients are terminally I'll and only survive because you kill a healthy man. Your example changes the situation to reflect the man on bridge scenario rather than this one.
That's changing the situation. I don't think it's comparable. In the specific trolley problem instance, I would pull the lever. In the situation you describe I wouldn't.
The difference between the two matters. The switch being one way is arbitrary and ultimately all individuals are in the same position. However, all 5 of your patients are terminally I'll and only survive because you kill a healthy man. Your example changes the situation to reflect the man on bridge scenario rather than this one.