Comprehensive and Detailed Explanation From NCC-Aligned Sources:
Tachysystole = >5 contractions in 10 minutes averaged over 30 minutes (NICHD).
However, NCC and AWHONN intervention guidelines state:
* If tachysystole appears in one or two consecutive 10-minute segments, especially with Category II or III patterns, intervention must begin immediately.
* Intervention includes:
* Stopping/reducing oxytocin
* Maternal repositioning
* IV bolus
* Tocolysis if needed
Why the wrong answers are wrong:
* A. Waiting 30 minutes delays necessary fetal resuscitation.
* C. Stage of labor does not determine when to intervene.
Correct answer: B. If tachysystole is seen for one or two 10-minute segments References:NCC C-EFM Candidate Guide; AWHONN FHMPP; Menihan.