Amnioinfusion can cause what changes in the fetal heart rate tracing?

Comprehensive and Detailed Explanation From NCC-Aligned Sources:

NCC defines amnioinfusion as indicated for:

Recurrent variable decelerations caused by cord compression

Oligohydramnios reducing buffer around the cord

Expected effect:

Reduction or elimination of variable decelerations

Why the other answers are incorrect:

A. Variability does not improve with amnioinfusion.

B. Baseline FHR does not increase as a result of amnioinfusion.

Correct answer: C. Resolution of variable decelerations.