Why should the word otherwise be used in this sentance?

[compiler]

"This is the most important treatment for anaphylaxis symptoms, because it can help to prevent a blocked airway from throat swelling, which can otherwise result in suffocation."

What will be the difference from the original sentence if the word, otherwise, is taken away or, why should the word otherwise be used in the above sentence? Thank you for your answer.​

 

[Matthew Wai]

I think 'otherwise' refers to a situation where the treatment does not exist. It emphasizes that, without the treatment, throat swelling can result in suffocation.

 

[tedmc]

"Otherwise" can be replaced with other words as follows:

"This is the most important treatment for anaphylaxis symptoms, because it can help to prevent a blocked airway from throat swelling, which, if not treated, results in suffocation."

 

[probus]

Exactly. Otherwise means "if not".