Circulating catecholamines partially regulate T wave morphology but not heart rate variability during repeated umbilical cord occlusions in fetal sheep.

CONCLUSIONS: These data demonstrate that circulating catecholamines do not contribute to FHRV during labor-like hypoxemia. Furthermore, circulating catecholamines did not contribute to the major rise in T/QRS ratio during labor-like hypoxemia but may regulate T/QRS ratio between brief hypoxemia.
PMID: 32491938 [PubMed - as supplied by publisher]

Source: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology - June 2, 2020 Category: Physiology Authors: Lear CA, Beacom MJ, Kasai M, Westgate JA, Galinsky R, Magawa S, Miyagi E, Ikeda T, Bennet L, Gunn AJ Tags: Am J Physiol Regul Integr Comp Physiol Source Type: research