**SINUSOIDAL PATTERN**. The true

**sinusoidal pattern**is rare but ominous and is associated with high

**rates**of

**fetal**morbidity and mortality.24 It is a regular, smooth, undulating form typical of a

**sine**wave that occurs with a frequency of two to five cycles per minute and an amplitude range of five to 15 bpm.

Moreover, what is Saltatory pattern?

**Saltatory**fetal heart rate

**pattern**. The

**saltatory**fetal heart rate

**pattern**was defined as fetal heart amplitude changes of greater than 25 beats per minute with an oscillatory frequency of greater than 6 per minute for a minimum duration of 1 minute.

What is sine wave pattern?

A

**sine wave**or sinusoid is a mathematical**curve**that describes a smooth periodic oscillation. A**sine wave**is a continuous**wave**. It is named after the function**sine**, of which it is the graph. It occurs often in pure and applied mathematics, as well as physics, engineering,**signal**processing and many other fields.What are the signs of a reassuring fetal heart rate pattern?

**Reassuring**FHR readings include periodic accelerations, mild variable decelerations lasting less than 30 seconds, or early decelerations that mirror contracitons in duration and timing. Nonreassuring FHR

**patterns**are those that suggest

**fetal**compromise or a declining ability to cope with the stress of labor.