[CY 222, a very low molecular weight heparin, in the curative treatment of deep venous thrombosis. Apropos of 95 cases. Clinical and phlebographic results].

Efficacy of a very low molecular weight heparin, CY 222, in the treatment of deep venous thrombosis of lower limbs was evaluated in a prospective clinical trial instituted in November 1984. CY 222 was administered as subcutaneous injections of 0.03 ml.kg-1 daily (750 anti-Xa U.kg-1.d-1) as 3 divided doses over a minimum of 10 days. Efficacy was rated as a function of clinical and phlebographic criteria. The group of 95 patients treated was a heterogenious one: 38% medical, 62% surgical, and 48% of the total group had partial interruption of vena cava previous to study. The period between first clinical manifestations of the deep thrombosis and therapy varied between one day and 3 months (mean: 1 1/2 days). Clinical symptomatology significantly and globally regressed in 88% of the patients. Comparisons between phlebographic findings at start and end of treatment are expressed using Arnesen's score (cf. table).