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J Cardiovasc Dev Dis. 2021 Nov 07;8(11). doi: 10.3390/jcdd8110152.

Autonomic Responses during Labor: Potential Implications for Takotsubo Syndrome.

Journal of cardiovascular development and disease

Georgios E Papadopoulos, Theoxaris I Evaggelou, Errikos K Moulias, Orestis Tsonis, Konstantinos C Zekios, Dimitrios N Nikas, Petros Tzimas, Minas Paschopoulos, Theofilos M Kolettis

Affiliations

  1. 1st Cardiology Department, University Hospital of Ioannina, 45500 Ioannina, Greece.
  2. Department of Obstetrics & Gynecology, University Hospital of Ioannina, 45500 Ioannina, Greece.
  3. Anesthesiology Department, University Hospital of Ioannina, 45500 Ioannina, Greece.

PMID: 34821705 PMCID: PMC8620927 DOI: 10.3390/jcdd8110152

Abstract

Takotsubo syndrome is a serious complication of labor. Although the pathophysiologic role of excessive sympathetic activation is established in this process, concurrent vagal responses have not been adequately described. Moreover, it remains unclear whether autonomic activity depends on the mode of delivery. Here, we explored the hypothesis that the different management of cesarean and vaginal delivery may elicit diverse responses affecting both autonomic arms. For this aim, continuous electrocardiographic recording was performed in 20 women during labor, and non-invasive indices of sympathetic and vagal activity were compared between the two modes of delivery. We report sympathetic prevalence during cesarean delivery, caused by marked vagal withdrawal, whereas autonomic activity was rather stable during vaginal delivery. These differences may be attributed to the effects of anesthesia during cesarean delivery, along with the protective effects of oxytocin administration during vaginal delivery. Our results provide further insights on autonomic responses during labor that may prove useful in the prevention of complications, such as takotsubo syndrome.

Keywords: cesarean delivery; sympathetic responses; vagal responses; vaginal delivery

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