Thromboelastometry (ROTEM) and thromboelastography (TEG) in copperhead snakebites: a case series.Clin Toxicol (Phila). 2020 Sep; 58(9):931-934.CT
Introduction: Copperhead snakes account for approximately half of treated snakebites in the US, and bites can result in significant swelling, bruising and pain. While other pit vipers, such as rattlesnakes, frequently cause coagulopathy demonstrated by standard coagulation tests including international normalized ratio (INR), partial thromboplastin time (PTT), platelet count, and fibrinogen, copperheads do not appear to do so. Functional coagulation tests, such as rotational thromboelastometry (ROTEM®) and thromboelastography (TEG®) illustrate the clotting process and may detect coagulation defects that were not evident on standard tests.