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  • Title: Fetal heart rate changes after accidental intrauterine lidocaine.
    Author: Van Dorsten JP, Miller FC.
    Journal: Obstet Gynecol; 1981 Feb; 57(2):257-60. PubMed ID: 7465134.
    Abstract:
    Fetal heart rate (FHR) decelerations resembling post-paracervical block (PCB) bradycardia were observed immediately after the inadvertent intrauterine injection of lidocaine hydrochloride. A review of the pathophysiology of post-PCB bradycardia is presented. The administration of a local anesthetic, either into the paracervical tissues or directly into the uterine cavity, may precipitate FHR decelerations principally, through arterial vasoconstriction with subsequent reflex responses and/or hypoxia in the fetus.
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