Comparing pulse rate measurement in newborns using conventional and dry‐electrode ECG monitors

Aim

Heart rate (HR) is the most important parameter to evaluate newborns’ clinical condition and to guide intervention during resuscitation at birth. The present study aims to compare the accuracy of NeoBeat dry-electrode ECG for HR measurement with conventional ECG and pulse oximetry (PO).

Methods

Newborns with a gestational age ≥ 32 weeks and/or birth weight ≥ 1.5 kg were included when HR evaluation was needed. HR was simultaneously measured for 10 minutes with NeoBeat, PO and conventional ECG.

Results

A total of 18 infants were included (median (IQR) gestational age 39 (36 – 39) weeks, birth weight 3150 (2288 – 3859) grams). Mean (SD) duration until NeoBeat obtained a reliable signal was 2.5 (9.0) s versus 58.5 (171.0) s for PO. Mean difference between NeoBeat and ECG was 1.74 bpm (LoA -4.987 – 8.459, correlation coefficient 0.98). Paired HR measurements over 30 s intervals revealed no significant difference between NeoBeat and ECG. The positive predictive value of a detected HR <100 bpm by NeoBeat compared to ECG was 54.84%, negative predictive value 99.99%, sensitivity 94.44%, specificity 99.99% and accuracy 99.85%.

Conclusion

HR measurement with NeoBeat dry-electrode ECG at birth is reliable and accurate.

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