Circulating vasoactive substances and hemodynamic adjustments at birth in lambs.

@article{Davidson1987CirculatingVS,
  title={Circulating vasoactive substances and hemodynamic adjustments at birth in lambs.},
  author={Dennis Davidson},
  journal={Journal of applied physiology},
  year={1987},
  volume={63 2},
  pages={676-84}
}
Circulating vasoactive substances and hemodynamics were examined in chronically instrumented unanesthetized lambs before, during, and after cesarean section (spontaneous respiration). One of three infusions were started 20 min before birth: saline control (n = 10), saralasin (n = 5), or captopril (n = 6). Control lambs exhibited peak (means +/- SE) increases above fetal base line at 5 min after birth in plasma renin activity (5.0 +/- 1.1 to 11.0 +/- 3.4 ng.ml-1.h-1), angiotensin II (ANG II, 37… CONTINUE READING

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