Handbook of CTG Interpretation by Chandraharan Edwin

Author:Chandraharan, Edwin
Language: eng
Format: epub
Publisher: Cambridge University Press
Published: 2017-01-30T00:00:00+00:00

Amplitude of 5 to 15 beats per minute

Frequency of 2 to 5 cycles per minute

Reduced or absent baseline variability

Absence of accelerations

The features of saltatory pattern are (see Figure 19.2):

Fetal heart rate baseline amplitude changes greater than 25 beats per minute

Oscillatory frequency of greater than 6 per minute

Minimum duration of 1 minute

Sinusoidal FHR can be further classified as7:

Smooth or typical – rounded, symmetric in shape

Jagged or atypical – jagged, saw-toothed form, also termed as ‘Poole shark teeth pattern’ (Figure 19.1)

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