Pereira, Valdelias XavierCarvalho, Tatiana Dias DeMarinovic, Marcos AntonioNorberto, Alex ReySoares, José MariaValenti, Vitor Engrácia [UNESP]Sorpreso, Isabel Cristina Esposito2021-07-142021-07-142021-05-12International Journal of Cardiovascular Sciences. Sociedade Brasileira de Cardiologia, p. -, 2021.2359-48022359-5647http://hdl.handle.net/11449/213420Swyer syndrome is one of the disorders of sexual differentiation. Previous studies have demonstrated increased sympathetic activity with heart rate variability (HRV) analysis with decreasing estradiol levels. One patient presented a pure 46, XY gonadal dysgenesis with female phenotype. Cardiac autonomic modulation was assessed through HRV analysis while at rest. This research analyzed linear and nonlinear indexes. HRV analysis showed reduced parasympathetic and global modulation with an apparent increase in sympathetic tone and a loss of HR fractal dynamics toward correlated behavior, characterized by low entropy and high determinism of time series.-engAutonomic Nervous SystemEstrogenReplacement TherapyAmenorrheaGonadectomyHeart RateCardiovascular Diseases/complicationsArtigo10.36660/ijcs.20200002S2359-56472021005005202Acesso abertoS2359-56472021005005202.pdf