Introduction: Melanosis coli is a condition in which the colon develops a brown to black discoloration. It is associated with chronic laxative use and frequently diagnosed incidentally during colonoscopy or histopathologic evaluation.
Case Presentation: A 74-year-old woman presented to the Emergency Department with severe abdominal pain and bilious emesis.
Background: Rainbow Pulse CO-Oximetry technology (Masimo Corporation, Irvine, CA) provides continuous and noninvasive measurement of arterial hemoglobin concentration (SpHb). We assessed the trending and accuracy of SpHb by this innovative monitoring compared with Hb concentration obtained with conventional laboratory techniques (Hb) in children undergoing surgical procedures with potential for substantial blood loss.
Methods: Hb concentrations were recorded from Pulse CO-Oximetry and a conventional hematology analyzer.