Evaluation of the Fetal Response to Intrapartum Digital Fetal Scalp Stimulation to Identify Intrapartum Fetal Hypoxia.

The main objective of this study is to evaluate whether digital fetal scalp stimulation improves fetal well-being in fetuses with suspicious or pathological cardiotocographic recordings, showing an improvement in cardiotocographic recording patterns and normal values in intrapartum fetal scalp blood results. Upon detection of a suspicious or pathologic cardiotocographic recording, the investigators need to perform an objective verification of fetal well-being. Currently, fetal scalp blood is the reference test to assess intrapartum fetal hypoxia, according to the protocols of the Spanish Society of Gynecology and Obstetrics. This procedure lasts about 5 minutes and consists of taking a small sample of the fetal scalp, through a vaginal exploration, the blood is collected in a thin tube and analyzed by a machine in the delivery room obtaining the results in a few minutes. The investigators emphasize that this test is not part of the study, as long as the monitor is suspicious or pathological, it will be performed according to protocol to objectively assess fetal well-being. Currently there are studies that support the use of fetal scalp stimulation as an alternative technique to assess intrapartum fetal well-being and predict neonatal outcomes, but they also highlight its limited evidence. Digital fetal scalp stimulation is a NON-invasive method, as no instrument is required and fetal stimulation is a 30-60 second surface rubbing pressure, which is performed manually, through vaginal exploration, the same technique the investigators use to assess dilation during the labor process. Each patient will be randomly assigned to a study group: Experimental group: before the extraction of capillary blood from the fetal scalp, fetal head stimulation will be performed, a technique that poses no risk to the baby. The researchers need the consent of the participants to perform this technique and collect data. Control group: fetal head stimulation will not be applied, bu