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Nomograms Used to Define the Short-Term Treatment with PGE1 in Patients with Intermittent Claudication and Critical Ischemia. The ORACL.E (Occlusion Revascularization in the Atherosclerotic Critical Limb) Study Group. The European Study

A.N. Nicolaides, MD, MS

G. Cipollone, MD

G. Laurora, MD

L. Incandela, MD

M. Cazaubon, MD

A. Barsotti, MD

A. Ledda, MD

B.M. Errichi, MD

U. Cornelli, MD

M. Dugall, MD

M. Corsi, MD

L. Mezzanotte, MD

G. Geroulakos, PhD

C. Fisher, MD

G. Szendro, MD

E. Simeone, MD

M.R. Cesarone, MD

M. Bucci, MD

G. Agus, MD

M.T. De Sanctis, MD

A. Ricci, MD

E. Ippolito, MD

S. Vasdekis, MD, PhD

D. Christopoulos, PhD

H. Helmis, PhD

G. Ramaswami, PhD

P.G. Ferrari, MD

P. Pomante, MD

M. Petrucci, MD

M. Veller, MD

R. Venniker, MD

P. Iacobitti, MD

G. Martines, MD

R. Ciccarelli, MD

N. Labropoulos, PhD

V. Bertelé, MD

G.M. Andreozzi, MD

San Valentino

PAP/PEA Project Corso Umberto I, 18, 65020 San Valentino (Pe) Italy

Infusional, cyclic PGE ₁ treatment is effective in patients with intermittent claudication and critical limb ischemia (CLI). One of the problems related to chronic PGE₁ treatment in vascular diseases due to atherosclerosis is to evaluate the variations of clinical condi tions due to treatment in order to establish the number of cycles per year or per period (in severe vascular disease reevaluation of patients should be more frequent) needed to achieve clinical improvement. In a preliminary pilot study a group of 150 patients (mean age 67 ± 12 years) with intermittent claudication (walking range from 0 to 500 m) and a group of 100 patients with CLI (45% with rest pain, and 55% gangrene; mean age 68 ± 11 years) the number of PGE₁ cycles according to the short-term protocol (STP) needed to produce significant clinical improvement was preliminarily evaluated. Considering these preliminary observations, the investigators established a research plan useful to produce nomograms indicating the number of cycles of PGE₁-STP per year needed to improve the clinical condition (both in intermittent claudication and CLI). A significant clinical improvement was arbitrarily defined as the increase of at least 35% in walking distance (on treadmill) and/or the disappearance of signs and symptoms of critical ischemia in 6 months of treatment in at least 75% of the treated patients. With consideration of the results obtained with the preliminary nomograms a larger validation of the nomograms is now advisable. A cost-effectiveness analysis is also useful to define the efficacy of treatment on the basis of its costs. The publication of this report in two angiological journals (Angeiologie and Angiology) will open the research on nomograms to all centers willing to collaborate to the study. The data are being collected in the ORACL.E database and will be analyzed within 12 months after the publication of this report.

Angiology, Vol. 51, No. 8, S3-S14 (2000)
DOI: 10.1177/000331970005100802


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