This Viva will examine your knowledge of the pharmacology of common resuscitation fluids.

Q 1. What is the composition of Hartmann’s Solution?

As this viva developed it sought an understanding of “balanced solutions”, difference, adverse effects of intravenous solutions and difference between crystalloids and colloids and distribution of common intravenous solutions within the body. Candidates mostly had difficulty defining and differentiating a colloid from a crystalloid. A colloid is defined as a substance dispersed evenly throughout another substance. The hydrocolloids consist of colloid particles dispersed in water and as such the solid particles may be unable to pass through a semi-permeable membrane, thus exerting a colloid osmotic force and preferentially expanding the intravascular volume.