Brown M C, Chavasse C J, Richmond D H, Abdulla U
Eur J Radiol. 1986 Aug;6(3):226-7.
The pressure drop which occurs along a narrow Foley catheter used for hysterosalpingography has been measured for radio-opaque contrast media of different viscosity. The difference between the applied pressure and the pressure developed within the uterus is sufficient to mislead the operator in some cases.