title: The peritoneum as a novel oxygenation organ: revitalization of intraperitoneal oxygenation.
abstract: Supplemental oxygenation is important in reversible pulmonary failure. To determine whether the peritoneal cavity can be used as a source of "extrapulmonary respiration," we perfused the peritoneal cavity with oxygenated red blood cells (RBCs) and saline, and measured the amount of oxygenation delivered through the peritoneum of dogs under controlled ventilation. Inflow and outflow catheters were placed in the peritoneal cavity and connected to a perfusion circuit. We investigated the safety of this procedure by examining the relationship between intraperitoneal infusion volume and hemodynamic changes in dogs that underwent peritoneal perfusion with oxygenated RBC (n = 6) and with oxygenated saline (n = 6). The controls comprised dogs that underwent a sham operation (n = 6). We found that an intraperitoneal infusion of less than 1,250 mL was hemodynamically safe. Oxygenation levels (PaO2) increased most obviously with an intraperitoneal infusion of oxygenated RBC. The peritoneum can potentially serve as an "artificial lung" in critically ill patients.
authors.affiliation: Department of Surgery II, National Defense Medical College, Tokorozawa, Saitama, Japan.
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Matsutani
authors.forename: Bonpei
authors.initials: B
authors.lastname: Takase
authors.forename: Yashiro
authors.initials: Y
authors.lastname: Nogami
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ozeki
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ishihara
authors.forename: Tadaaki
authors.initials: T
authors.lastname: Maehara
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000378:metabolism; D004285:Dogs; D004912:Erythrocytes / Q000378:metabolism; D006439:Hemodynamics; D008297:Male; D008954:Models, Biological; D010100:Oxygen / Q000737:chemistry* / Q000378:metabolism*; D010101:Oxygen Consumption; D010477:Perfusion; D010529:Peritoneal Cavity; D010537:Peritoneum / Q000378:metabolism*; D011659:Pulmonary Gas Exchange; D012120:Respiration Disorders / Q000503:physiopathology
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen