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Cohort study, 1990

Does long-term estradiol implant therapy help PMS symptoms?

Yes, all 50 patients had continued benefit for all symptoms over 5.6 years, with 74 to 96 percent relief depending on the symptom. However, about 58 percent developed progestin side effects, and 8 patients needed hysterectomy.

Moderate study design 50 patients receiving estradiol implants for PMS, followed 5.6 years on average

What they did

50 patients receiving estradiol implants for PMS were followed for an average of 5.6 years (range 2 to 8 years). Most also received progestin to protect the uterus. Researchers tracked symptom relief and complications.

What they found

All symptoms improved, with bloating relieved in 74% and depression in 96%. Menstrual cycle control improved in 31 patients and periods became less painful in 30 patients. However, 58% developed cyclical progestogenic symptoms from the progestin. Seven patients had persistent severe symptoms despite dose or type adjustments. Eight patients had hysterectomies: 5 for continuing progestogenic symptoms, 1 for prolapse, 2 for prolonged bleeding. Four patients developed cystic hyperplasia. Uterine enlargement occurred in all 8 hysterectomy patients. No blood clots, pulmonary embolism, breast disease, or atypical endometrial hyperplasia occurred.

What it means for you

Estradiol implants effectively relieve PMS symptoms long-term, but progestin side effects are common and challenging to manage. Some patients need surgery to address these effects. There was no control group, so we cannot compare to doing nothing. The main practical limitation is managing progestin-related symptoms.

50

patients with PMS treated

74-96%

symptom relief range (bloating to depression)

58%

developed progestin-related side effects

About the study

Original title
The long-term effects of estradiol implant therapy for the treatment of premenstrual syndrome
Authors
Watson NR, Studd JW, Savvas M et al.
Journal
Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology
Year
1990
Study design
Cohort study
Participants
31
What was tested
Estradiol implants with progestin management

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