Advertisement

Intermittent fetal bradycardia induced by midpregnancy fetal ultrasonographic study

  • Glenn J. Mendoza
    Correspondence
    Reprint requests: Glenn J. B. Mendoza, MD, Department of Pediatrics, New York Medical College, Munger Pavillion, Valhalla, NY 10595.
    Affiliations
    Divisions of Cardiology and Neonatology, Department of Pediatrics, Mount Sinai School of Medicine, City University of New York., New York, New York
    Search for articles by this author
  • Orlandino Almeida
    Affiliations
    Divisions of Cardiology and Neonatology, Department of Pediatrics, Mount Sinai School of Medicine, City University of New York., New York, New York
    Search for articles by this author
  • Leonard Steinfeld
    Affiliations
    Divisions of Cardiology and Neonatology, Department of Pediatrics, Mount Sinai School of Medicine, City University of New York., New York, New York
    Search for articles by this author
      This paper is only available as a PDF. To read, Please Download here.

      Abstract

      Fetal bradycardias were observed during fetal ultrasonogaphic and echocardiographic studies performed in the second trimester of pregnancy. The episodes of bradycardia were brief and recovery was usually rapid. Ultrasound transducer pressure applied to the maternal abdomen during the study provoked the phenomenon. Vagal discharge resulting from an increase in intrauterine pressure appeared to be the causative mechanism. (Ann J OBSTET GYNECOL 1989;160:1038-40.)

      Key words

      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to American Journal of Obstetrics & Gynecology
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Silverman NM
        • Enlerlein MA
        • Stranger P
        • Teitel DF
        • Heyman MA
        • Golbus MS
        Recognition of fetal arrythmias by echocardiography.
        JCU. 1985; 13: 255
        • Steinfeld L
        • Rappaport HL
        • Rossbach HC
        • Martinez E
        Diagnosis of fetal arrythmias using echocardiographic and Doppler techniques.
        J Am Coll Cardiol. 1986; 8: 1425
        • Kleinman CS
        • Donnerstein RL
        • Jaffe CC
        • et al.
        Fetal echocardiography: a tool for evaluation of in utero cardiac arrythmias and monitoring of in utero therapy: analysis of 71 patients.
        Am J Cardiol. 1983; 51: 237
        • Goodlin R
        Fetal cardiovascular responses to distress. A review.
        Obstet Gynecol. 1977; 49: 371
        • Lumbers ER
        • McCloskey DI
        • Potter EK
        • Courtice GP
        Cardiac vagal action during hypoxia in adult and fetal sheep.
        J Anton Nerv Syst. 1986; 16: 23
        • Smith CA
        • Nelson MN
        The physiology of the newborn infant.4th ed. Charles C Thomas, Chicago, Illinois1976: 79-80
        • Wozniak W
        • O'Rahilly R
        Fine structure and myelination of the developing human vagus nerve.
        Acta Anat (Basel). 1981; 109: 218