Reference : The Effect of Colic on Oxygen Extraction in Horses
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/9016
The Effect of Colic on Oxygen Extraction in Horses
English
Cambier, Carole mailto [Université de Liège - ULg > Département de sciences fonctionnelles > Département de sciences fonctionnelles >]
Wierinckx, Maude [Université de Liège - ULg > Département de sciences fonctionnelles > Biochimie >]
Grulke, Sigrid mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Département clinique des animaux de compagnie et des équidés >]
Clerbaux, Thierry [Cliniques Universitaires Saint-Luc > Department of Internal Medicine, Division of Pneumology > > >]
Serteyn, Didier mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux >]
Detry, Bruno [Cliniques Universitaires Saint-Luc > Department of Internal Medicine, Division of Pneumology > > >]
Liardet, M.-P. [> > > >]
Frans, A. [> > > >]
Gustin, Pascal mailto [Université de Liège - ULg > Département de sciences fonctionnelles > Pharmacologie, pharmacothérapie et toxicologie >]
2008
Veterinary Journal
175
1
102-107
Yes (verified by ORBi)
1090-0233
[en] Blood-oxygen binding ; Oxygen equilibrium curve ; Oxygen extraction ratio ; Horses ; Colic
[en] Blood oxygen transport and oxygen extraction were assessed in horses with colic. A gravity score (GS) ranging from 1 to 3 was attributed to each colic case with healthy horses used as controls. Jugular venous and carotid arterial blood samples were collected and concentrations of 2,3-diphosphoglycerate, adenosine triphosphate, inorganic phosphate and chloride were determined. pH and partial pressures of carbon dioxide (PCO(2)), and oxygen (PO(2)) were also measured. Oxygen equilibrium curves (OEC) were constructed under standard conditions and oxygen extraction ratios calculated. Haemoglobin oxygen affinity measured under standard conditions (P50(std)) was unchanged in colic horses compared with healthy controls. Horses with the highest GS, i.e. 3 had lower blood pH values than healthy animals. Arterial and venous partial pressures of oxygen at 50% haemoglobin saturation (P50(a) and P50(v)) were significantly higher in horses suffering from colic (GS=3) than in healthy horses. The oxygen extraction ratio was also significantly increased in colic horses with a GS of 3. A rise in the oxygen extraction ratio detected in the most severely affected animals seemed to reflect the compensatory properties of the oxygen transport system where extraction of oxygen from the blood increases when systemic oxygen delivery decreases, as might be anticipated in horses with colic.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/9016
10.1016/j.tvjl.2006.12.010

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