Hemodynamic instability associated with balloon catheter traction after transurethral surgery.

Severe vasovagal reactions were experienced by three patients in whom balloon catheter traction was used to assist hemostasis after transurethral procedures. Release of catheter traction, along with conventional resuscitative measures, led to resolution of cardiovascular instability. Prompt recognition of the potential relationship between vasovagal reactions and parasympathetic stimulation that may accompany bladder base compression by catheter balloon is emphasized.