Risk indicators after envenomation in humans by Echis coloratus (mid-east saw scaled viper).

To determine the frequency, severity and predictors of bleeding and azotemia after envenomation in humans by Echis coloratus, a retrospective survey of 68 cases in Israel between 1970 and 1989 was carried out. We used univariate and multivariate analyses of clinical variables on admission for the outcome variables of bleeding, hemoglobin and platelet levels, and blood urea. Within hours or days after envenomation, a major bleeding episode occurred in 18% of the victims, a drop in hemoglobin to 10 g/dliter or less in 14%, and an increase in blood urea to 9 mmole/liter or more in 15%.

Echis colorata bites: clinical evaluation of 42 patients. A retrospective study.

A retrospective study of 42 patients bitten by Echis colorata in the last 26 years is reported. Twenty-eight patients received and 14 patients did not receive specific antivenin. The clinical findings, laboratory studies, and course of hospitalization revealed hemostatic disturbances in most of the patients.