Effects of labor contractions on catecholamine release and breathing frequency in newborn rats.

@article{Ronca2006EffectsOL,
  title={Effects of labor contractions on catecholamine release and breathing frequency in newborn rats.},
  author={April E. Ronca and Regina A Abel and Patrick J. Ronan and Kenneth J. Renner and Jeffrey R. Alberts},
  journal={Behavioral neuroscience},
  year={2006},
  volume={120 6},
  pages={
          1308-14
        }
}
Plasma catecholamines in newborn rats (0-2 hr old) were analyzed following vaginal birth, cesarean section with simulated labor contractions, or cesarean section without labor contractions. Upon delivery, pups were exposed to key elements of the rat's natural birth process, that is, umbilical cord occlusion, tactile stimulation, and cooling. Only pups exposed to actual or simulated labor showed an immediate rise in norepinephrine and epinephrine. Initial postpartum respiratory frequencies were… CONTINUE READING

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