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Introduction The value of gastric intramucosal pH (pHi) can be calculated from the tonometrically measured partial pressure of carbon dioxide ( P C O 2 $$ {P}_{C{O}_2} $$ ) in the stomach and the arterial bicarbonate content. Low pHi and increase of the difference between gastric mucosal and arterial P C O 2 $$ {P}_{C{O}_2} $$ ( P C O 2 $$ {P}_{C{O}_2}...
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