Inflatable balloon catheters are widely used in the treatment of sever
e epistaxis and are designed to be filled either with air or liquid. A
postal survey revealed that 87 per cent of respondents used an inflat
ant which was deemed inappropriate by the manufacturer. When balloons
designed for water or saline were filled with air, they deflated rapid
ly, in some cases being virtually empty after 24 hours. Better and mor
e accessible instruction leaflets are required if the balloons are to
be used as intended. Foley catheters are frequently used as nasopharyn
geal packs, in conjunction with anterior nasal packs. Paraffin in the
commonly used anterior packs damages the rubber of the catheter, resul
ting in the balloon bursting. This should be recognized by clinicians
as a possible cause of rebleeding.