The use of a fetal scalp electrode is contraindicated in certain situations, such as: - Maternal Infections: Conditions like HIV, herpes simplex virus, or hepatitis, where there is a risk of transmitting the infection to the fetus. - Placenta Previa: When the placenta is covering the cervix, preventing safe access to the fetal scalp. - Incomplete Cervical Dilation: If the cervix is not sufficiently dilated, it is not safe to insert the electrode.