Cardiac arrhythmias as a potential sign of systemic disease: Which laboratory tests are useful?

Decloedt, Annelies

doi:10.1111/eve.13547

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…It provides a short-term adaption to stressful situations, resulting in increased inotropy and chronotropy, as well as an increased demand of myocardial oxygen, which might worsen ischemia (Bellotto et al, 2015;Liaudet et al, 2014). The increase in circulating catecholamines changes the membrane permeability, which might lead to electrolyte imbalances, additionally contributing to myocardial injury (Decloedt, 2022;Liaudet et al, 2014). Electrolyte imbalances are commonly found in horses after acute hemorrhage, as in this case (Navas de Solis et al, 2015).…”

Section: Discussionmentioning

confidence: 96%

Myocardial injury following acute abdominal hemorrhage and septicemia in a seventeen-month-old draft horse

de Bruijn,

Dufourni,

Lefère

et al. 2023

Vlaams Diergeneeskundig Tijdschrift

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A seventeen-month-old draft horse gelding was presented with acute abdominal bleeding following castration. After two blood transfusions and medical treatment, clinical parameters stabilized, and the horse seemed to recover. Four days after admission, the horse suddenly developed tachycardia, tachypnea and pyrexia. Electrocardiography revealed paroxysmal monomorphic ventricular tachycardia related to myocardial injury. The horse recovered progressively after medical treatment and returned to normal sinus rhythm. In this case report, the importance to monitor for myocardial injury and cardiac arrhythmias after acute hemorrhage is highlighted.

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Section: Discussionmentioning

confidence: 96%

Myocardial injury following acute abdominal hemorrhage and septicemia in a seventeen-month-old draft horse

de Bruijn,

Dufourni,

Lefère

et al. 2023

Vlaams Diergeneeskundig Tijdschrift

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“…This may also be the case for horses, although to the authors’ knowledge no previous reports exist of cases in horses where cartilage in the subaortic region is so pronounced that it may interfere with cardiac conduction. Even though the echocardiographic examination revealed a hyperechogenic structure in the AV nodal region, this is also observed in horses without a history of collapse or high number of second-degree AV blocks and could not alone explain the collapses [ 38 ]. However, in horses with multiple AV blocks, echocardiography could add information about anatomical changes in this region.…”

Section: Discussionmentioning

confidence: 99%

Cartilaginous Intrusion of the Atrioventricular Node in a Quarter Horse with a High Burden of Second-Degree AV Block and Collapse: A Case Report

Nissen

Saljic

Kjeldsen

et al. 2022

Animals

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Second-degree atrioventricular (AV) block is the most common cardiac arrhythmia in horses, affecting 40–90% depending on breed. Usually, the AV blocks occur while the horses are resting and disappear upon exercise and are, therefore, considered to be uneventful for horses. However, if the AV blocks occur frequently, this may result in syncope and collapse. Identifying the cause of second-degree AV block is difficult and often subscribed to high vagal tone. In this report, we present an eight-year-old Quarter horse with a high burden of second-degree AV blocks and multiple collapses. The clinical examination, including neurological examination, blood analysis, 24-h ECG recording and cardiac echocardiography, did not reveal any signs of general or cardiovascular disease besides a high burden of second-degree AV blocks (~300 blocks per hour) and a hyperechoic area in the AV nodal region. An implantable loop recorder (ILR) was inserted to monitor the cardiac rhythm. The ILR detected several consecutive second-degree AV blocks and pauses above 5 s. However, unfortunately, no recordings were available during the collapses. Eventually, the horse was euthanized and the heart inspected. The aortic root was severely cartilaginous and appeared to penetrate the AV node, especially in the His bundle region, possibly explaining the hampered AV conduction. Nevertheless, it is still uncertain if the AV nodal disruption caused the collapses and more knowledge on AV nodal diseases in horses is warranted.

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Cardiac arrhythmias as a potential sign of systemic disease: Which laboratory tests are useful?

Cited by 2 publications

References 23 publications

Myocardial injury following acute abdominal hemorrhage and septicemia in a seventeen-month-old draft horse

Myocardial injury following acute abdominal hemorrhage and septicemia in a seventeen-month-old draft horse

Cartilaginous Intrusion of the Atrioventricular Node in a Quarter Horse with a High Burden of Second-Degree AV Block and Collapse: A Case Report

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