Lower oesophageal sphincter pressure during early pregnancy: manometric studies before and after abortion.


Resting lower oesophageal sphincter pressure (L.O.S.P.) was determined in 14 pregnant women with heartburn and 12 pregnant women without heartburn before (10 to 18 weeks of gestation) and in the first week after an elective abortion. Mean L.O.S.P. in pregnant women with heartburn was 11.5 ± 1.5 mm Hg before and 17.3 ± 1.8 mm Hg after abortion, the… (More)


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