What is the optimal ECG lead for deriving a respiratory signal using ECG-derived respiration (EDR)?
The optimal ECG lead for deriving respiratory signals varies between individuals, but personalized lead selection can yield highly accurate respiration frequency estimation.
EDR is an interesting measuring technique that allows an indirect assessment of respiratory activity. This is an alternative solution to direct methods that are based on the measurement of air flow, which require a specialized sensor or even a system. However, due to inter-personal anatomical differences, the optimal ECG lead (placement of the electrodes) ensuring the best EDR signal quality is not fixed. An influence of ECG lead geometrical relation to the heart axis on the EDR signal quality has been examined in the paper. It was found that optimal electrodes position strongly differs between individuals. For each person there were at least few leads with high correlation with reference signal (over 0.8). They allowed for respiration frequency estimation with almost 100% accuracy.
Przystup et al. (Sat,) studied this question.
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