Pao(redirected from P'ao)
peak acid output (PAO)
on the pentagastrin test, after administration of pentagastrin, the sum of the two highest 15-minute outputs of gastric acid multiplied by 2, expressed as mmol/hr.
peak acid outputA measure of the maximum hydrogen ion (H+) production by gastric parietal cells, which is defined as the sum of the 2 highest consecutive 15-minute acid outputs after pentagastrin or histamine stimulation, multiplied by 2.
PAOPeak acid output, see there.
The pressure of gases at the opening of the patient's airway