[Direct potentiometric determination of the level of cyanide in plasma following an infusion of sodium nitroprusside].

Plasma cyanide concentrations were measured potentiometrically in 12 patients before and after infusion of sodium nitroprusside (SNP). A close correlation was found between the increase in plasma cyanide level and the total dose of SNP and between the increase and the mean rate of SNP infusion. After a total dose of 3.

[Ergotism within the scope of the postoperative prevention of thromboembolism].

Vasospastic reactions (ergotism), a complication in postoperative prophylaxis against thrombo-embolism, using heparin-dihydroergotamine, are assessed in this paper on the basis of the authors' own observations and following evaluation of 19 literature references. The authors feel that the above combination of active substances may be recommended also for the future in routine prophylactic medication to prevent thrombo-embolism.