Csection and breathing tube thing?

planeNsimple

Ok, I know my title is horrible for this post.  I have no idea what it is called though.  When my sister had her c/s she had this tube thing she had to breath into every so often after her c/s.  They said this would help her from getting sick after.  I didn't have that after my c/s last time and got a HORRIBLE cough that not only kept me up at all night for weeks, it hurt like hell to cough after surgery.  Did you have one of those tube things?  Anyone know what I'm talking about?