Effect of Medetomidine Administration on Vertebral Heart Score in Scottish Fold Cats

Authors : İbrahim Çavuşoğlu, Sıtkıcan Okur
Pages : 1-5
Doi:10.47027/duvetfd.1558401
View : 70 | Download : 35
Publication Date : 2025-06-30
Article Type : Research Paper
Abstract :This study aimed to evaluate the impact of medetomidine on the vertebral heart score (VHS) in Scottish Fold cats. The VHS method, commonly used in veterinary practice, provides a reliable means to assess cardiac size via radiographic imaging. Understanding the effects of sedative drugs on such measurements is essential, particularly in clinical settings involving animals with potential cardiac concerns. A total of 20 Scottish Fold cats, aged between 8 and 48 months and weighing 2.8-5.9 kg, were included in the study. Sedation was induced using an intramuscular injection of medetomidine (80 µg/kg), and radiographic images were obtained at five time points: pre-sedation (T0) and at 5, 10, 30, and 45 minutes post-administration (T1-T4). The VHS was evaluated from left laterolateral (LL) and ventrodorsal (VD) X-rays, and statistical comparisons were performed between these intervals. There was a statistically significant increase in VHS between the pre-sedation (T0) and 45-minute (T4) measurements (P<0.05). However, no significant difference was observed at earlier time points (T1, T2, and T3). Additionally, while the cardiac short axis (CSA) showed a slight increase in size post-sedation (P=0.06), the cardiac long axis (CLA) remained unchanged (P=0.40). Medetomidine increased VHS in both LL and VD radiographs, particularly by the 45th minute post-administration. As this alteration impacts both cardiological evaluation and anesthesia safety, reporting these findings is critical for optimizing clinical decision-making. Given the potential for an altered cardiac silhouette, caution is advised when administering medetomidine in Scottish Fold cats with pre-existing heart conditions, as these changes may interfere with clinical assessments of cardiac health.
Keywords : Kalp büyüklüğü, medetomidin, radyografi, Scottish Fold kedileri, vertebral kalp skoru

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