“The combination of ranitidine and sodium bicarbonate produced marked alkalinisation of gastric contents (mean pH 8.9).”
“… sodium bicarbonate pre‐… received ranitidine less than 2 hours before operation led to satisfactory elevation of gastric pH. Only four patients had a gastric pH < 2.5, … any medication, two received only ranitidine and one patient had a long interval from administration of bicarbonate to aspiration of gastric contents.”