Maurer-Schweizer H, Walser K
Berl Munch Tierarztl Wochenschr. 1977 Oct 1;90(19):369-71.
In depressed calves (modified APGAR score 4-6) there is at birth an evident combined respiratory-metabolic acidosis (pH = 7.082 +/- 0.175; pCO2 = 73.3 +/- 26.8 mm Hg; BE = -10.6 +/- 7.2 mmol/l). The metabolic adaptation is completed after 6 hours, the respiratory acidosis is present up to 24 hours after delivery. In comparison to normal calves there are significant deviations in pH-values, base excess standard bicarbonate and actual bicarbonate during the whole investigation time. The carbon dioxide tensions of the depressed calves are at birth similar to those of normal calves, but in the following hours they are significantly higher. A definite relationship can be demonstrated between the 1 minute APGAR score and pH-value, base excess, standard bicarbonate and actual bicarbonate. Oxygen tension, oxygen saturation and carbon dioxide do not correlate with the clinical condition.
在出生时表现抑郁的犊牛（改良阿氏评分4 - 6分）存在明显的混合性呼吸代谢性酸中毒（pH = 7.082 ± 0.175；pCO2 = 73.3 ± 26.8 mmHg；碱剩余 = -10.6 ± 7.2 mmol/l）。代谢适应在6小时后完成，呼吸性酸中毒在出生后24小时内持续存在。与正常犊牛相比，在整个研究期间，pH值、碱剩余、标准碳酸氢盐和实际碳酸氢盐均有显著差异。出生时，抑郁犊牛的二氧化碳分压与正常犊牛相似，但在随后的几小时内显著升高。1分钟阿氏评分与pH值、碱剩余、标准碳酸氢盐和实际碳酸氢盐之间存在明确的关系。氧分压、氧饱和度和二氧化碳与临床状况无关。
