Bleeding patterns with the 19.5 mg LNG-IUS, with special focus on the first year of use: implications for counselling

Area of Science:

• Reproductive Health
• Contraception
• Gynecology

Background:

• Understanding early bleeding patterns is crucial for effective use and continuation of hormonal contraceptives.
• The 19.5 mg levonorgestrel-releasing intrauterine system (LNG-IUS) is a widely used contraceptive method.
• Detailed data on the initial bleeding profile of the 19.5 mg LNG-IUS is needed for patient counseling.

Purpose of the Study:

• To provide a detailed description of early bleeding and spotting patterns associated with the 19.5 mg LNG-IUS.
• To analyze the influence of prior contraceptive methods on bleeding patterns with the 19.5 mg LNG-IUS.
• To assess changes in bleeding and spotting days over a 12-month period.

Main Methods:

• Pooled analysis of bleeding diaries from phase II and phase III randomized controlled studies of the 19.5 mg LNG-IUS.
• Inclusion of data from a 2-year extension phase.
• Median number of bleeding/spotting days per 30-day period analyzed for 12 months.

Main Results:

• A progressive decline in bleeding and/or spotting days was observed from month 1 to month 12.
• The proportion of women experiencing ≤4 bleeding/spotting days increased from 6.2% at month 1 to 54.1% at month 12.
• Women previously using an LNG-IUS had the lowest median number of bleeding/spotting days in the first month.

Conclusions:

• Detailed analysis of bleeding diaries provides valuable insights into early bleeding changes with the 19.5 mg LNG-IUS.
• These findings can assist healthcare providers in counseling women regarding contraceptive choices.
• Understanding bleeding patterns can improve method continuation rates for the 19.5 mg LNG-IUS.