Abstract
S A T A b st ra ct s of manometric parameters. Patients submitted to HRM calibration showed an increase in mean LES pressure from 7.21 mm Hg before starting the operation, to 9.94 mm Hg after introducing CO2 pneumoperitoneum, 16 mm Hg after crural closure, 24 mm Hg after fundoplication and 25.73 mm Hg at the end of the operation and CO2 evacuation. The initial mean LES length was 3.15 cm, 3.7 cm after CO2 introduction, 5.1 cm after crural closure, 4.88 cm after fundoplication completion and 4.48 cm after CO2 evacuation, for a total mean increase of 1.33 cm. At one year from the operation, patients submitted to HRM calibration had a better pHmetric result with a mean DeMeester's score of 8.24 vs 23.05 (p = 0.039) and a mean acid exposure of 1.57% vs 5.7% (p = 0.017). Mean LES pressure was slightly higher for HRM calibrated patients, 12.04 vs 11.12 mm Hg, p = 0.04, as well as total LES length. 3.97 cm vs 3.48 cm, p = 0.4, and intraabdominal LES length, 2.5 vs 1.9 cm, p = 0.2. Conclusions. Intraoperative calibration of LNF with HRM gets better functional results than standard calibration using intraesophageal bougie. Both reflux control and pressure and length of LES are better when calibration is performed with HRM.
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