Surveillance for recurrent stenosis after endovascular procedures. A prospective study
B. V. Miller, W. J. Sharp, A. R. Shamma, T. F. Kresowik, S. Petrone and J. D. Corson
Department of Surgery, University of Iowa College of Medicine, Iowa City.
Eighty-nine endovascular procedures were performed during a 1-year period.
Techniques included balloon angioplasty (n = 50), laser-assisted balloon
angioplasty (n = 32), and atherectomy (n = 7). Indications were
claudication (65.2%), critical ischemia (30.3%), and failing bypass (4.5%).
Preoperative evaluation included a history and physical examination,
segmental limb pressures, and color duplex ultrasonography. Postoperative
surveillance consisted of a history and physical examination, ankle-arm
indexes, and color duplex examinations at 1-week, 1-month, and then 3-month
intervals. All levels of aortoiliac and infrainguinal disease were treated.
Immediate technical success rate was 89.8%. Recurrence rates by life-table
analysis reveal a 9-month patency rate of 45.4%. Early results of this
prospective study indicate that endovascular procedures are subject to
significant restenosis rates. Restraint is advised concerning general
acceptance of endovascular procedures pending critical study.
