Assessment of the use of two new low-dose levonorgestrel-releasing intrauterine systems as contraceptives

Women's Health
Luis Bahamondes, M Valeria Bahamondes

Abstract

Evaluation of: Gemzell-Danielsson K, Schellschmidt I, Apter D. A randomized, Phase II study describing the efficacy, bleeding profile, and safety of two low-dose levonorgestrel-releasing intrauterine contraceptive systems and Mirena. Fertil. Steril. 97(3), 616-622.e3 (2012). A randomized, open-label, Phase II study was conducted in 37 centers in five European countries to assess the optimal dose for a new contraceptive levonorgestrel intrauterine system (LNG-IUS). Overall, 742 parous or nulliparous women aged 21-40 years were allocated to receive a LNG-IUS that initially releases 12 µg/day (LNG-IUS(12)) or 16 µg/day (LNG-IUS(16)) in vitro or the currently available device that releases 20 µg/day (LNG-IUS(20)). The two new devices are shorter than the current one. Pearl Indices of 0.17, 0.82 and 0.00 for the LNG-IUS(12), LNG-IUS(16) and LNG-IUS(20), respectively, reflect the contraceptive efficacy of these devices. The mean number of bleeding and spotting days decreased in all three groups; however, this decrease was more significant in LNG-IUS(20) users. Placement of the new shorter devices was considered simple by providers, while patients reported significantly less pain with the two new devices compared with the current one....Continue Reading

References

Jan 1, 1986·International Journal of Gynecological Pathology : Official Journal of the International Society of Gynecological Pathologists·S G SilverbergT Luukkainen
Jan 30, 2002·Obstetrics and Gynecology·Nancy L StanwoodThomas R Konrad
May 29, 2007·Contraception·Catherine d'Arcangues
Sep 30, 2008·The European Journal of Contraception & Reproductive Health Care : the Official Journal of the European Society of Contraception·Andrea BrockmeyerAnne Webb
Nov 17, 2009·Contraception·David A Grimes
Apr 20, 2010·Contraception·Richard LyusUNKNOWN Board of the Society of Family Planning
Jun 5, 2010·The Australian & New Zealand Journal of Obstetrics & Gynaecology·Kirsten I BlackSuzanne M Garland

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.