Key result
Two and three hours of Holter recordings provided all heart rate averages within ±20% of the 24-hour mean heart rate in dogs with atrial fibrillation, whereas shorter durations were less accurate.
Why the study?
The study was conducted to evaluate the accuracy of short duration ECG recordings extracted from continuous ambulatory Holter monitoring to assess 24-hour mean heart rate in dogs with atrial fibrillation.
Do short-duration ECG recordings accurately predict 24-hour mean heart rate in dogs with atrial fibrillation?
Observational (n=20)
No
Do short-duration ECG recordings accurately predict 24-hour mean heart rate in dogs with atrial fibrillation?
In dogs with atrial fibrillation, short-duration ECG recordings of at least 2 to 3 hours are needed to accurately predict the 24-hour mean heart rate within ±20%.
May support shorter Holter monitoring for mean heart rate in canine AF; leaves open prospective validation before clinical adoption.
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.
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Gunasekaran et al. (2020) conducted an observational in Atrial fibrillation (n=20). Shorter duration ECG recordings (5 minutes to 3 hours) vs. 24-hour mean heart rate (Holter) was evaluated on Percentage of shorter duration ECG obtained heart rate averages that fell within ±10%, ±15%, and ±20% of 24-hour mean heart rate. Two and three hours of Holter recordings provided all heart rate averages within ±20% of the 24-hour mean heart rate in dogs with atrial fibrillation, whereas shorter durations were less accurate.
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