ST segment depression and ventricular fibrillation in a dog after contrast agent administration

The Journal of Veterinary Medical Science

article

Haruka TAMOGI¹  Takaharu ITAMI¹  Ai HORI¹  Norihiko OYAMA¹  Tadashi SANO¹  Kazuto YAMASHITA¹ 

[1]Department of Veterinary Medicine, Rakuno Gakuen University

关键词: contrast agent;    dog;    ST segment depression;   

DOI  :  10.1292/jvms.20-0333

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

An 11-year-old Toy Poodle underwent a computed tomography examination with contrast (iohexol) enhancement under anesthesia. Heart rate and R-wave amplitude on electrocardiogram (ECG) increased 2.5 min after iohexol administration, and end-tidal carbon dioxide decreased to 12 mmHg. A progressive ST segment depression was observed on ECG. Subsequently, the ECG waveform changed to ventricular fibrillation. However, spontaneous circulation returned following cardiopulmonary resuscitation. Myocardial ischemia or anaphylactic shock was suspected in the dog, which explains the ST segment depression observed on ECG. When performing radiological examinations with a contrast agent, the ECG waveform changes, such as an increase in heart rate, R-wave amplitude, or ST segment depression, should be carefully monitored. This might enable early detection of cardiac dysfunction and the ensuing cardiac arrest in dogs.

【 授权许可】

Unknown