Table 3

Mean difference and SD of the difference between Doppler-HR and ECG-HR by weight

Weight (kg)Mean difference between ECG-HR and AD-HR (bpm)SD of the difference between ECG-HR and AD-HR (bpm)Mean difference between ECG-HR and DD-HR (bpm)SD of the difference between ECG-HR and DD-HR (bpm)
>3.5 (n=16)1.88.80.219.4
2.49–3.5 (n=15)1.59.1822.9
1.49–2.5 (n=12)2.85.71.118.1
<1.5 (n=8)0.74.1–1.76.5
  • AD, audible Doppler; DD, Doppler display; HR, heart rate.