Department of Small Animal Clinical Sciences, College of Veterinary Medicine, East Lansing, Michigan, United States of America.
Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa, United States of America.
PLoS One. 2020 Nov 2;15(11):e0241620. doi: 10.1371/journal.pone.0241620. eCollection 2020.
The objective of this study was to evaluate the accuracy of short duration electrocardiographic (ECG) recordings extracted from ambulatory continuous ECG (Holter) to assess 24-hour mean heart rate in dogs with atrial fibrillation. In this retrospective study, Holter recordings obtained from 20 dogs with atrial fibrillation were selected for analysis. Ten out of 20 dogs were receiving drugs to control heart rate at the time of Holter evaluation. From the Holter recordings, heart rate averages were calculated for various sample durations (five-minutes, 30 minutes, one-hour, two-hours, and three-hours) for each dog. Percentage of these shorter duration ECG obtained HR averages that fell within ±10%, ±15% and ± 20% of 24-hour mean heart rate was determined for each sample duration and for each dog. Seventy five percent of heart rate averages obtained from three-hour ECG recordings fell within ±10% of 24-hour mean HR. All the heart rate averages obtained from two-hour ECG recordings fell within ±20% of 24-hour mean heart rate. Based on the results of this study it can be concluded that the duration of the ECG recording affects the prediction accuracy for 24-hour Holter mean HR. Only two and three hours of Holter recordings provided all heart rate averages within ±20% of 24-hour mean heart rate. No significant differences were noted in the prediction accuracy of shorter duration ECG recordings based on rate control therapy status. Further prospective studies are needed to assess the accuracy of HR obtained at home using various ECG recording devices to predict 24-hour mean heart rate in dogs with atrial fibrillation.
本研究旨在评估从动态心电图（Holter）中提取的短时间心电图（ECG）记录评估患有心房颤动的犬 24 小时平均心率的准确性。在这项回顾性研究中，选择了 20 只患有心房颤动的犬的 Holter 记录进行分析。在 Holter 评估时，20 只犬中有 10 只正在服用药物来控制心率。从 Holter 记录中，为每只犬计算了各种采样时长（5 分钟、30 分钟、1 小时、2 小时和 3 小时）的心率平均值。确定了每种采样时长和每只犬的较短 ECG 获得的 HR 平均值在 24 小时平均心率的±10%、±15%和±20%范围内的百分比。75%的三小时 ECG 记录获得的心率平均值在 24 小时平均 HR 的±10%范围内。所有两小时 ECG 记录获得的心率平均值都在 24 小时平均心率的±20%范围内。基于这项研究的结果可以得出结论，ECG 记录的时长会影响 24 小时 Holter 平均 HR 的预测准确性。只有两小时和三小时的 Holter 记录提供了所有心率平均值在 24 小时平均心率的±20%范围内。根据率控制治疗状态，没有注意到较短时长 ECG 记录的预测准确性存在显著差异。需要进一步的前瞻性研究来评估使用各种 ECG 记录设备在家中获得的 HR 的准确性，以预测患有心房颤动的犬的 24 小时平均心率。
