Esophageal motility after gastric bypass in Roux-en-Y for morbid obesity: high resolution manometry findings.
BACKGROUND
Bariatric operations may alter esophageal motility; however, there is a paucity of studies of the esophageal motility with high resolution manometry.


OBJECTIVE
To study patients after Roux-en-Y gastric bypass for morbid obesity with high resolution motility.


METHODS
Were included 18 asymptomatic patients (17 women, mean age 53 years) after undergoing to Roux-en-Y gastric bypass for morbid obesity. All patients underwent high resolution motility after a mean follow-up of three years after the operation.


RESULTS
The mean pressure of the lower esophageal sphincter was 18 ± 13 (range 0-51) mmHg. Seven (39%) patients had a hypotonic sphincter and one (5%) hypertonicity. Sphincter relaxation was abnormal in one patient. Total and abdominal lower esophageal sphincter length was 4 ± 1 (1-7) cm e 2 ± 1 (0-3) cm, respectively. Esophageal body distal amplitude (average measurements at 3 and 7 cm above the lower esophageal sphincter) was 77 ± 22 (40-120) mmHg. One (5%) patient had hypocontractility. Peristaltic waves were found in 95 ± 0% (60-100). The upper esophageal sphincter basal pressure was 118 ± 82 (33 - 334) mmHg; one (5%) patient (5%) had a hypotonic upper sphincter and eight (44%) hypertonicity.


CONCLUSIONS
After gastric bypass in Roux-en-Y occurs significant lower esophageal sphincter hypotonia and upper esophageal sphincter hypertonia.
Bruna Dell'Acqua
BD
Cassão
Fernando Augusto Mardiros
FA
Herbella
Luciana C
LC
Silva
Fernando Pompeu P
FP
Vicentine
D000713:Anastomosis, Roux-en-Y; D004947:Esophagus / Q000502:physiology*; D005260:Female; D015390:Gastric Bypass; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery*; D011184:Postoperative Period; D011446:Prospective Studies