to determine whether increases in progestin , estrogen , and metabolic rate produced a rise in ve and hypoxic ventilatory response ( hvr ) similar in magnitude to that observed at full-term pregnancy , we studied 12 postmenopausal women after 1 wk of treatment with placebo , progestin ( 20 mg tid medroxyprogesterone acetate ) , estrogen ( 1.25 mg bid conjugated equine estrogens ) , and combined progestin and estrogen .
C0032961
pregnancy
C0065864
medroxyprogesterone acetate