Barratclough Ashley, Tuxbury Kathryn, Hanel Rita, Stacy Nicole I, Ruterbories Laura, Christiansen Emily, Harms Craig A
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA.
New England Aquarium, Animal Health Department, Central Wharf, Boston, MA 02110, USA.
J Zoo Wildl Med. 2019 Mar 1;50(1):62-68. doi: 10.1638/2018-0142.
Cold-stunning in sea turtles is a frequent natural cause of mortality and is defined as a hypothermic state due to exposure to water temperatures <12°C. Derangements of biochemistry and hematology data by cold stunning have been well documented, although the effects on coagulation have not yet been investigated. The objectives of this study were to characterize the hemostatic state of non-cold-stunned sea turtles and to compare cold-stunned sea turtles at admission and after successful rehabilitation via a sea turtle-specific thromboelastography (TEG) protocol. TEG enables evaluation of the entire coagulation process, and the methodology has recently been established in sea turtles. Initially, 30 wild and apparently healthy sea turtles were sampled as controls: loggerhead sea turtles (), =17; Kemp's ridley sea turtles (), = 8; and green turtles (), = 5. In addition, paired TEG samples were performed on 32 and 14 at admission and prerelease after successful rehabilitation from cold stunning. Statistically significant differences in reaction time, kinetics, angle, and maximum amplitude parameters in and species demonstrated that the time taken for blood clot formation was prolonged and the strength of the clot formed was reduced by cold stunning. These findings indicate that cold stunning may cause disorders in hemostasis that can contribute to the severity of the condition. Early diagnosis of coagulopathies in the clinical assessment of a cold-stunned sea turtle may influence the treatment approach and clinical outcome of the case.
海龟的冷麻痹是一种常见的自然死亡原因,被定义为由于暴露于水温<12°C而导致的体温过低状态。尽管尚未研究冷麻痹对凝血的影响,但冷麻痹对生物化学和血液学数据的紊乱已有充分记录。本研究的目的是描述未冷麻痹海龟的止血状态,并通过特定于海龟的血栓弹力图(TEG)方案比较冷麻痹海龟入院时和成功康复后的情况。TEG能够评估整个凝血过程,并且该方法最近已在海龟中建立。最初,采集了30只野生且明显健康的海龟作为对照:蠵龟(),n = 17;肯氏丽龟(),n = 8;绿海龟(),n = 5。此外,对32只和14只在冷麻痹成功康复后的入院时和放生前进行了配对TEG样本检测。蠵龟和丽龟物种在反应时间、动力学、角度和最大振幅参数上的统计学显著差异表明,冷麻痹会延长血液凝固形成所需的时间,并降低所形成凝块的强度。这些发现表明,冷麻痹可能导致止血紊乱,从而加重病情的严重程度。在冷麻痹海龟的临床评估中早期诊断凝血障碍可能会影响病例的治疗方法和临床结果。