Electrolyte and Acid-Base Composition of Pericardial Fluid in Man

Authors:
  • PHPeter Hutchin
    Peter Hutchin
  • HNHipolito V. Nino
    Hipolito V. Nino
  • RSRichard Suberman
    Richard Suberman

Abstract
Total carbon dioxide value and pH were higher in pericardial fluid than in arterial blood in 11 patients undergoing open-heart surgery, while calcium, phosphorus, and total protein levels were lower, and sodium, potassium, chloride, and urea nitrogen levels were the same. The findings are consistent with rapid diffusion of carbon dioxide and slow equilibration of bicarbonate across the pericardial membranes.

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