[Manometric evaluation of distal esophagus of rabbits submitted to open and laparoscopic fundoplication].
BACKGROUND
Total fundoplication used in gastroesophageal reflux treatment, may be performed according to two techniques: laparotomy and laparoscopy.


OBJECTIVE
To study the lower esophageal sphincter in rabbits submitted to open and laparoscopic fundoplication.


METHODS
Electromanometry studies of esophagus were carried out in 40 male rabbits, through the pull trough technique and infusion of the catheters with distilled water. The pressure width (mm Hg) and the length (cm) of the lower esophageal sphincter were measured in basal conditions (moment 1). The 40 animals were divided into four groups of 10 animals, according to the following surgical procedure: group 1: open total fundoplication; group 2: median laparotomy and dissection of gastroesophageal junction; group 3: laparoscopy total fundoplication; group 4: pneumoperitonium and dissection of the gastroesophageal junction. In moment 2 (1 week after the surgery) the manometry of the esophagus was performed in every animals.


RESULTS
In groups 1 (open fundoplication) and 3, an increase of pressure width and length of the lower esophageal sphincter was observed. In groups 2 and 4, the pressure width and length of the lower esophageal sphincter presented no significant alteration.


CONCLUSIONS
The fundoplication affects the antireflux gastroesophagic barrier and it becomes more efficient, because the pressure and the length of the lower esophageal sphincter increased after the pos-operated step of the surgery. This effect was observed in the two studied techniques, the laparotomy and the laparoscopy.
Henry
Maria Aparecida Coelho de Arruda
MA
Departamento de Cirurgia e Ortopedia, Faculdade de Medicina, Universidade Estadual Paulista, Botucatu, SP, Brasil.
Motta
Dino César Pereira da
DC
Silva
Rodrigo Altenfelder da
RA
D000818:Animals; D015154:Esophageal Motility Disorders / Q000601:surgery*; D004943:Esophagogastric Junction / Q000502:physiology; D018662:Fundoplication / Q000379:methods*; D010535:Laparoscopy; D008297:Male; D008365:Manometry; D011817:Rabbits