How does this sentence translate? (JPN >> ENG)

[Murakumo]

"――あなたたちの判断や行動ひとつが
患者さんやご家族の今後や一生を
左右してしまうこともあるのよ。"

How does the above Japanese sentence translate best into English, anyone? what is the sentence trying to express??

 

[Frankincense]

Hi Murakumo.

Rough translation:
Your mere judgement and action can (sometimes) have a critical impact on (your) patients and (their) families' life and future.