oa Southern African Journal of Anaesthesia and Analgesia - Balanced colloids in cardiac surgery : refresher course

Volume 17, Issue 1
  • ISSN : 2220-1181
  • E-ISSN: 2220-1173



Considerable attention has been given to so-called "balanced solutions" (such as Ringer's lactate, and more recent derivatives) as alternatives to the less physiological "abnormal" 0.9% saline. Colloids prepared in "balanced" electrolyte solutions have also been developed, alongside similar colloids in saline. This is a consequence of the observation that excessive use of saline will result in hyperchloraemic acidosis, which has been identified as a potential side-effect of saline-based solutions. There is debate about the extent of the morbidity associated with this condition, although the risk is probably quite low. It has been suggested that the use of balanced solutions may avoid this effect.

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