Immediate alterations in intestinal oxygen saturation and blood flow after massive small bowel resection as measured by photoacoustic microscopy

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Kathryn J. Rowland
  • Junjie Yao
  • Christopher R. Erwin
  • Konstantin I. Maslov
  • Lihong V. Wang
  • Brad W. Warner

Detail(s)

Original languageEnglish
Pages (from-to)1143-1149
Journal / PublicationJournal of Pediatric Surgery
Volume47
Issue number6
Publication statusPublished - Jun 2012
Externally publishedYes

Abstract

Purpose: Massive small bowel resection (SBR) results in villus angiogenesis and a critical adaptation response within the remnant bowel. Previous ex vivo studies of intestinal blood flow after SBR are conflicting. We sought to determine the effect of SBR on intestinal hemodynamics using photoacoustic microscopy, a noninvasive, label-free, high-resolution in vivo hybrid imaging modality. Methods: Photoacoustic microscopy was used to image the intestine microvascular system and measure blood flow and oxygen saturation (So 2) of the terminal mesenteric arteriole and accompanying vein in C57BL6 mice (n = 7) before and immediately after a 50% proximal SBR. A P value of less than .05 was considered significant. Results: Before SBR, arterial and venous So 2 were similar. Immediately after SBR, the venous So 2 decreased with an increase in the oxygen extraction fraction. In addition, the arterial and venous blood flow significantly decreased. Conclusion: Massive SBR results in an immediate reduction in intestinal blood flow and increase in tissue oxygen utilization. These physiologic changes are observed throughout the remnant small intestine. The contribution of these early hemodynamic alterations may contribute to the induction of villus angiogenesis and the pathogenesis of normal intestinal adaptation responses. © 2012 Elsevier Inc. All rights reserved.

Research Area(s)

  • Blood flow, Oxygen saturation, Photoacoustic microscopy, SBR, Small bowel resection

Citation Format(s)

Immediate alterations in intestinal oxygen saturation and blood flow after massive small bowel resection as measured by photoacoustic microscopy. / Rowland, Kathryn J.; Yao, Junjie; Wang, Lidai et al.
In: Journal of Pediatric Surgery, Vol. 47, No. 6, 06.2012, p. 1143-1149.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review