CHANGES IN SERUM ELECTROLYTE AND ATRIAL NATRIURETIC PEPTIDE CONCENTRATIONS, ACID-BASE AND HAEMODYNAMIC STATUS AFTER RAPID INFUSION OF ISOTONIC SALINE AND RINGER LACTATE SOLUTION IN HEALTHY VOLUNTEERS

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Abstract
Opinions differ on the use of isotonic sodium chloride and Ringer lactate solution for extracellular volume depletion. We have compared changes in serum electrolyte concentrations and acid-base and haemodynamic status after rapid infusion of 2 litre of either isotonic sodium chloride or Ringer lactate solution in healthy volunteers. Changes within groups were small and statistically insignificant. Central venous pressure changes were associated with secretion of atrial natriuretic peptide, but this reponse was delayed.

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