Right-to-left shunt has modest effects on CO2 delivery to the gut during digestion, but compromises oxygen delivery

  title={Right-to-left shunt has modest effects on CO2 delivery to the gut during digestion, but compromises oxygen delivery},
  author={Christian Lind Malte and Hans Malte and L{\ae}rke R{\o}nlev Reinholdt and Anders Findsen and James W Hicks and Tobias Wang},
  journal={Journal of Experimental Biology},
  pages={531 - 536}
ABSTRACT By virtue of their cardiovascular anatomy, reptiles and amphibians can shunt blood away from the pulmonary or systemic circuits, but the functional role of this characteristic trait remains unclear. It has been suggested that right-to-left (R–L) shunt (recirculation of systemic blood within the body) fuels the gastric mucosa with acidified and CO2-rich blood to facilitate gastric acid secretion during digestion. However, in addition to elevating PCO2, R–L shunt also reduces arterial O2… 

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