title: Three-dimensional pressure imaging: a novel method for intraoperative manometry during laparoscopic esophagomyotomy for esophageal achalasia.
abstract: With the introduction of computerized manometry, the creation of the three-dimensional (3-D) pressure image with measurement of pressure vector volume (PVV) has become available to assess the pressure structure of the high-pressure zone (HPZ) of the distal esophagus. We have applied this technique to intraoperative manometry during laparoscopic surgery for esophageal achalasia (EA). A laparoscopic esophagomyotomy with anterior fundoplication was performed in a 12-year-old boy with EA. Computerized 3-D images were obtained by a stepwise pullback of a manometric assembly with eight radial side-holes to quantitate the PVV of the HPZ of the distal esophagus in each stage of the operation for EA. Virtual abolishment of the peak pressure image and a marked reduction in the PVV after esophagomyotomy suggested appropriate decompression of the HPZ. Intraoperative manometry using computerized 3-D pressure imaging with measurement of the PVV is thus useful to assess the HPZ during laparoscopic surgery for EA.
authors.affiliation: Department of Pediatric Surgery, Osaka University Medical School, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kawahara
authors.forename: K
authors.initials: K
authors.lastname: Nakajima
authors.forename: H
authors.initials: H
authors.lastname: Soh
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.forename: M
authors.initials: M
authors.lastname: Wasa
authors.forename: E
authors.initials: E
authors.lastname: Taniguchi
authors.forename: S
authors.initials: S
authors.lastname: Ohashi
authors.forename: A
authors.initials: A
authors.lastname: Okada
mesh_terms: D002648:Child; D004931:Esophageal Achalasia / Q000175:diagnosis* / Q000601:surgery*; D018662:Fundoplication; D006801:Humans; D021621:Imaging, Three-Dimensional; D010535:Laparoscopy; D008297:Male; D008365:Manometry / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*