Lirou Wei, Jing Li, Honglin Ren, Shiyi Fu, Yiting Liu, Yuhong Wu, Bo Liu
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引用次数: 0
Abstract
Objectives: This study aimed to assess left atrial (LA) size in healthy cats using cardiovascular MRI (cMRI) and to compare this with LA size assessed by two-dimensional echocardiography. The hypothesis was that cMRI would accurately determine LA size in domestic cats.
Methods: A prospective comparative study was performed. Six healthy cats were selected for the study. Standard two-dimensional echocardiography was performed with and without general anaesthesia. cMRI was conducted under general anaesthesia. A comprehensive analysis of LA mass and function measurements was performed to determine the consistency and correlation of LA size and function indicators between two-dimensional echocardiography and cMRI.
Results: Our study found that intraobserver variability for cMRI measurements was lower than that for two-dimensional echocardiography. Compared with cMRI, echocardiography under anaesthesia significantly overestimated maximal LA volume (LAVmax_2D, P <0.01) and significantly underestimated minimal LA volume (LAVmin_2D, P <0.01). The LAVmin measured by two-dimensional echocardiography exhibited the highest consistency (intraclass correlation coefficient = 0.857) and correlation (R = 0.75, P <0.01) with LAVmin measured by cMRI. The linear regression equation was LAVmin_ cMRI = 0.891 × LAVmin_2D + 0.304.
Conclusions and relevance: cMRI represents a reproducible method for assessing LA mass in domestic cats. This study underscored the importance of echocardiography in veterinary cardiology, and the LAVmin measured by two-dimensional echocardiography may reflect the true LAVmin.
目的：本研究旨在利用心血管MRI （cMRI）评估健康猫的左心房（LA）大小，并将其与二维超声心动图评估的左心房（LA）大小进行比较。假设是，cMRI可以准确地确定家猫的LA大小。方法：前瞻性比较研究。6只健康的猫被选为研究对象。在全身麻醉和不麻醉的情况下进行标准二维超声心动图检查。cMRI在全身麻醉下进行。通过对LA质量和功能测量的综合分析，确定二维超声心动图与cMRI之间LA大小和功能指标的一致性和相关性。结果：我们的研究发现，cMRI测量的观察者内变异性低于二维超声心动图。与cMRI相比，麻醉下超声心动图明显高估了最大LA体积（LAVmax_2D, P P R = 0.75， P）。结论及相关性：cMRI是评估家猫LA体积的一种可重复的方法。本研究强调超声心动图在兽医心脏病学中的重要性，二维超声心动图测量的LAVmin可能反映真实的LAVmin。
期刊介绍：
JFMS is an international, peer-reviewed journal aimed at both practitioners and researchers with an interest in the clinical veterinary healthcare of domestic cats. The journal is published monthly in two formats: ‘Classic’ editions containing high-quality original papers on all aspects of feline medicine and surgery, including basic research relevant to clinical practice; and dedicated ‘Clinical Practice’ editions primarily containing opinionated review articles providing state-of-the-art information for feline clinicians, along with other relevant articles such as consensus guidelines.
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