Simultaneous pressure and hydrogen ion measurements in the esophagus and stomach. A preliminary report.
D055592:Biophysical Phenomena; D001703:Biophysics; D002404:Catheterization; D003937:Diagnosis, Differential; D004560:Electricity; D004947:Esophagus / Q000378:metabolism; D005500:Follow-Up Studies; D005753:Gastric Mucosa / Q000378:metabolism; D006548:Hernia, Diaphragmatic / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011183:Postoperative Complications; D011312:Pressure; D014159:Transducers