Diaphragm irritation: Hiccups are contractions of the diaphragm. Often some fluid may accumulate in the chest after CABG surgery which may induce this. Also his medications should be reviewed to assure none have that as a side effect.
Answered 6/10/2014
5.4k views
Irritation: Inflammation or irritation of the phrenic nerve or diaphragm following surgery can cause hiccups.
Answered 3/26/2013
5.2k views
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