22
Aug
Decelerations In Fetal Heart Rate. A variable fetal heart rate fhr deceleration immediately followed by an acceleration is referred to as an overshoot fhr pattern. Variable decelerations are not good. This workshop defined variable decelerations as abrupt visually apparent decreases in the fetal heart rate. The cause of the decrease fetal heart rate is due to umbilical cord compression.
An early deceleration is defined as a waveform with a gradual decrease and return to baseline with time from onset of the deceleration to the lowest point of the deceleration nadir 30 seconds. This pattern could have clinical utility as 1 minute contractions are typical of active labor. Definition of variable decelerations visually apparent abrupt decrease onset of deceleration to low point 30 seconds in the fetal heart rate below baseline at least 15 beats lasting between 15 seconds to 2 minutes. Remember a normal fetal heart rate is 110 160 bpms. The timing of onset and return to baseline in relation to the contraction is variable timing with respect to contractions is also variable. Notice that every time mom has a contraction the baby s heart rate majorly decreases.
Remember a normal fetal heart rate is 110 160 bpms.
Electronic fetal monitoring. Simultaneously depicted fetal heart rate was reassuring. It also concludes that all fhr decelerations are due to fetal hypoxaemia and hence their time relationship to contractions is of no relevance. Notice that every time mom has a contraction the baby s heart rate majorly decreases. Remember a normal fetal heart rate is 110 160 bpms. Physiology of fetal heart rate decelerations.