Q: Foley catheter balloon should be inflated with (select one)

A) Sterile water 
B) Normal Saline 


Answer: Sterile water

Foley catheter balloon should be inflated with sterile water (after urine flow is confirmed). Normal Saline should never be used to inflate the Foley catheter balloon because it may cause crystal formation, obstruct the balloon channel and later prevent the deflation of balloon.


Reference:

Daneshmand S, Youssefzadeh D, Skinner EC. Review of techniques to remove a Foley catheter when the balloon does not deflate. Urology 2002; 59:127.