这两个理解的对吗？

Vaginitis, Estrogen-Deficient

GENERAL Rx 

• Vaginal estrogen: Comes in cream, tablet inserts, and impregnated silastic ring. Tablets or cream can be used daily for the first 2 weeks, then 1 to 2× per week for maintenance therapy. Progesterone for endometrial protection is not required for vaginal estrogen. 

• Systemic hormone replacement therapy (HRT): Utilize lowest effective dose. Estrogen use should be reviewed every 3 to 6 mo, with an attempt to taper or discontinue its use. Comes as a patch or pill. If uterus present, opposing progesterone therapy for protection of endometrial lining, either continuous low-dose pills, cyclic pills, or progesterone intrauterine device. 

• Ospemifene: Selective estrogen receptor modulator, some systemic side effects (hot flashes, possible risk of venous thromboembolism). 

• Other: Prasterone vaginal dehydroepiandrosterone is approved though less widely studied; vaginal laser therapy is being studied but is not approved for treatment.

雌激素缺乏性阴道炎

一般处方

l 阴道用雌激素：有乳膏、阴塞片剂和硅橡胶浸渍环。片剂或乳膏可每日使用连用2周，然后每周1至2次维持治疗。阴道使用雌激素并不需要合并使用保护子宫内膜的黄体酮。

l 全身激素替代疗法（hormone replacement therapy，HRT）：使用最低有效剂量。雌激素的使用应每3～6个月复查一次，然后试图慢慢减少或停止使用，使用贴片或药片的形式。如果有子宫的话，反对为了保护子宫内膜而用黄体酮治疗，无论是连续低剂量丸、周期性药丸还是黄体酮宫内装置。

l 奥培米芬（Ospemifene）：选择性雌激素受体调节剂，可能有一些全身性副作用（潮热，可能有静脉血栓栓塞的风险）。

l 其他：普拉甾酮阴道脱氢表雄酮已得到批准，但研究较少；阴道激光疗法正在研究中，但没有批准治疗。