Fetal scalp stimulation test
| Fetal scalp stimulation test | |
|---|---|
| Purpose | detect fetal metabolic acidemia |
Fetal scalp stimulation test is a diagnostic test used to detect fetal metabolic acidemia. It can be used as a non-invasive alternative to fetal scalp blood testing.[1][2]
Procedure
A firm digital pressure on head or a gentle pinch of fetal head with atraumatic clamp is used for stimulation. An acceleration of the fetal heart rate of 15 bpm lasting at least 15 seconds is suggestive of normal fetal outcome.
A multi-centre parallel group randomised controlled trial (RCT) is planned in four maternity centres in Ireland. The study aims to recruit 2500 nulliparous women with a term (≥37+0 weeks) singleton pregnancy who require a second-line test of fetal wellbeing in labour due to an abnormal CTG. Women will be allocated randomly to dFSS or FBS on a 1:1 ratio. The primary outcome is caesarean section. With 1250 women in each arm, the study will have 90% power to detect a difference of 5–6%, at a two-sided alpha significance level of 5%, assuming a caesarean section rate of at least 20% in the dFSS group
See also
References
- ^ Clark, SL; Gimovsky, ML; Miller, FC (Feb 1, 1984). "The scalp stimulation test: a clinical alternative to fetal scalp blood sampling". American Journal of Obstetrics and Gynecology. 148 (3): 274–7. doi:10.1016/s0002-9378(84)80067-8. PMID 6695974.
- ^ Skupski, DW; Rosenberg, CR; Eglinton, GS (January 2002). "Intrapartum fetal stimulation tests: a meta-analysis". Obstetrics and Gynecology. 99 (1): 129–34. doi:10.1016/s0029-7844(01)01645-3. PMID 11777523. S2CID 5915067.
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