[The clinical efficacy of hemoperfusion in treatment of drug poisoning]. 
To investigate the ability of hemoperfusion to remove some drugs or toxin from the body and its clinical efficacy.  Sixty-nine cases of poisoning due to tetramine or other drugs poisoning in our hospital between July 1990 and December 2003 were studied.  Thirty-four patients among them received conventional treatment (including early gastric lavage, hepatoprotection, diuresis or respiratory support), and the remaining were given conventional treatment and hemoperfusion.  Toxin concentration changes in blood before and after hemoperfusion, survival rate, time from come onset to regaining consciousness and convulsion termination and duration of clinical course were compared.  In the hemoperfusion group, three patients died, the survival rate was 91.4%, whereas in the non-hemoperfusion group, the survival rate was 85.3% (P > 0.05).  Meanwhile the clinical course was markedly shortened in the hemoperfusion group (P < 0.05).  The time from coma onset to regaining consciousness and convulsion termination in the hemoperfusion group was significantly shorter than that in the non-hemoperfusion group.  The clearance rate was different for different poisons, among them the benzodiazepines had an excellent clearance.  Hemoperfusion could adsorb from blood a different amount of poisons.  There is obvious efficacy in shortening clinical course and reducing complications.  It could possibly raise survival rate in serious poisoning.