(1) You are not going to die. (This is what the Doctor in the clip said).
This might seem blunt, but it is very important to encourage the patient to stay calm as panicking may worsen the asthma attack. Although it could be reassuring to the patient to let them know that they’re not going to die but the doctor could have communicated it in a more caring and compassionate way so that the patient would have felt more empowered therefore helping to calm down.

(2) What makes you think that, Chris?
I think asking open questions is important to build a therapeutic relationship with the patient, however during an asthma attack is not the ideal time to make him speak more than necessary when he’s already finding it difficult to breathe.

(3) If you just slow your breathing down, you will be fine.
Like the others have mentioned asking him to slow down his breathing and encouraging him to focus on a goal could be beneficial to calm him. When the patient is in a state of panic, I think it is very helpful when someone clearly specifies what needs to be done to help the situation.

4) Everything will be ok, stop talking, to save your breath.
This statement feels like it’s undermining Chris’s feelings. There are definitely more skillful ways of communicating the same information in a more compassionate and empathetic way.