Littlejohn A
J Reprod Fertil Suppl. 1975 Oct(23):681-4.
The arterial oxygen tension (PaO2) in clinically normal newborn foals at 1300 m above sea-level is considerably lower (less than 60 mmHg) than in similarly aged foals at lower altitudes. This figure is further reduced to less than 50 mmHg without adverse effect in newborn foals at 1300 m maintained under pentobarbitone anaesthesia for prolonged periods. Measurement of O2 dissociation curves indicates that haemoglobin becomes saturated at a lower blood O2 tension in newborn foals than adult horses.
海拔1300米处临床正常的新生马驹的动脉血氧分压（PaO2）明显低于（低于60 mmHg）较低海拔处年龄相仿的马驹。在海拔1300米处，长时间处于戊巴比妥麻醉下的新生马驹，该数值进一步降至50 mmHg以下，且无不良影响。氧解离曲线的测量表明，新生马驹血红蛋白在较低的血液氧分压下就会饱和，这一点与成年马不同。
