Preliminary investigation of serum cardiac troponin I in dogs with acute ischaemic stroke

Comorbidities, long-term outcome and poststroke epilepsy associated with ischemic stroke - A multicenter observational study of 125 dogs

BACKGROUND

Little is known regarding the comorbidities and prognostic factors associated with the long-term outcome of ischemic stroke in dogs. Although poststroke epilepsy is a well-recognized syndrome in people, it is unclear if this phenomenon also occurs in dogs.

HYPOTHESIS/OBJECTIVE

Document comorbidities, long-term outcome (survival and stroke recurrence), and occurrence of epileptic seizures associated with ischemic stroke.

ANIMALS

One hundred and twenty-five client-owned dogs.

METHODS

Multicenter observational study including dogs diagnosed with ischemic stroke between 2000 and 2021. Associations between comorbidities, stroke location and extent, poststroke epileptic seizures, and long-term outcome were investigated. Referring veterinarians and owners were contacted to obtain follow-up information.

RESULTS

Fifty-two dogs (41.6%) had a comorbidity. The most common comorbidities were hypertension (20%) and proteinuria (8%). Eight dogs (6.4%) that did not survive to discharge had a territorial ischemic stroke. Overall median survival time for dogs with a comorbidity was 482 days (range, 1-3013) and 907 days (range, 1-3027) in dogs without comorbidities (Kaplan-Meier survival analysis P = .602). Twenty-four dogs (19.2%) had a suspected stroke recurrence and a total of 8/109 dogs (7.3%) developed poststroke epilepsy. No association was found between suspected stroke recurrence or development of poststroke epilepsy and survival (P = .812, P = .487).

CONCLUSIONS AND CLINICAL IMPORTANCE

Despite no significant difference in survival of dogs diagnosed with ischemic stroke, with or without comorbidities, investigations for underlying causes are recommended to provide appropriate treatment. Poststroke epilepsy is uncommon.

CHANGES OF SERUM CARDIAC TROPONIN I IN EXERCISE STRESS TEST AND AFTER EXERCISE

ABSTRACT Introduction: Cardiac Troponin (CTN) has a strong organ specificity, which indicates that myocardial injury is present. However, it is worth noting that the increase does not suggest that the myocardium necessarily presents ischemic necrosis. Objective: To observe the changes in serum kerocalin I (CTNI) content after exercise, explore the effects of exercise training on hematocytes and that cause damage to myocardial cell stimulation. Methods: 18 rats were divided into three groups in this study, and three exercises were conducted separately. Results: After 6 weeks of exercise training, the number of red blood cells increased and the content of troponin I (CTNI) in the serum also significantly increased. The serum CTNI of the disposable large strength group was significantly higher than that of the quiet group (P <0.001). The serum CTNI in the 6-week exercise group was significantly higher than that of the quiet group (P <0.001), but the serum CTNI level between the two sports groups was not different. Conclusions: The motion training model used in this study can improve the number of red blood cells in the blood, improve synchronous blood capacity, and help the body's aerobic capacity increase. Level of evidence II; Therapeutic studies - investigation of treatment results.