the ability of h2 receptor antagonists and continuous enteral alimentation to maintain high intragastric ph in patients with chronic obstructive pulmonary disease ( copd ) requiring mechanical ventilation was evaluated by continuously monitoring intragastric ph prior to and following sequential addition of ranitidine or continuous enteral alimentation ( or both ) to their therapeutic regimen .
C2757005
h2 receptor antagonists
C0034665
ranitidine