Hysteroscopic procedures, which are an alternative to hysterectomy for surgical treatment of menorrhagia and uterine fibroids, place women at risk for intravasation of uterine distention fluid. Intravasation can produce fluid overload, pulmonary edema, congestive heart failure, and electrolyte imbalances. To examine risk factors for and evaluate nursing interventions to decrease the incidence of intravasation, the researchers compared mean arterial pressures (MAPs) and intrauterine pressures (IUPs) in two groups of women undergoing elective outpatient hysteroscopic procedures. The experimental group consisted of 20 women in whom fluid infusion pump pressures were maintained below the women's MAPs. The control group consisted of 20 women whose fluid infusion pump pressures were set at random. Distention fluid deficits and the total infused distention fluid volume differed significantly between the two groups, supporting the study hypothesis that maintaining equilibrium between women's IUPs and MAPs decreases the risk of uterine distention fluid absorption into the vasculature and fluid overload complications. Perioperative nurses need to monitor women's MAPs before and during hysteroscopic procedures and maintain fluid infusion pump pressures at or below women's MAPs to decrease the potential for intravasation.