Postmortem changes in electrical resistance of the gastric wall during the early postmortem period in rats.
A simple and reliable technique was employed for measurement of (dc) electrical resistance of the gastric wall of rats. Tissue resistance decreased linearly (r = -0.87; P less than 0.001) from 66.1 +/- 12.1 kOhm/cm2 immediately following death to 23.3 +/- 3.5 kOhm/cm2 at a postmortem interval of 24 h. These changes are believed to reflect progressive postmortem changes in the physical dimensions of the intercellular space and/or changes in electrical conductivity of the intercellular/extracellular fluids.
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Department of Physiology, University of Cape Town Medical School, Observatory, South Africa.
D000818:Animals; D004553:Electric Conductivity; D008297:Male; D011180:Postmortem Changes; D051381:Rats; D015203:Reproducibility of Results; D013270:Stomach / Q000473:pathology / Q000503:physiopathology*