Introduction
Contraception refers to the prevention of the union of sperm and ovum, the inhibition of ovulation, or the interference with the implantation of a fertilized ovum in the uterus. It encompasses both temporary and permanent methods to avoid pregnancy resulting from sexual intercourse. An ideal contraceptive should meet the following criteria: widespread acceptance, affordability, ease of use, safety, high effectiveness, and minimal requirement for motivation, maintenance, and supervision.
In recent years, contraception has been a significant revolution, particularly in attempts to intervene in the ovulation cycle. The failure rate of any contraceptive method is calculated as the pregnancy rate per one hundred women years of use, determined by the number of accidental pregnancies multiplied by 1200 and divided by the number of months of observation.
The current approach in family planning programs is to provide a range of contraceptive options, allowing individuals to choose according to their specific needs and preferences, while promoting family planning as a way of life.
What Is the Prevalence Rate for Modern Contraceptive Methods?
In India, the prevalence rate for modern contraceptive methods is 42.8 percent (48 percent for all methods). Female sterilization accounts for 34.2 percent, pill use for 2.1 percent, intrauterine device (IUD) use for 1.6 percent, and condom use for 3.1 percent. Male sterilization accounts for 1.9 percent. In China, the modern contraceptive usage rate is 83.3 percent, with IUD use accounting for 36.4 percent and female sterilization for 33.5 percent. Despite increased family planning usage globally, one-fourth of births worldwide are still unplanned.
Over the past three decades, significant advancements have been made in developing new contraceptive technologies. These include the transition from high-dose to low-dose combined oral contraceptives, the introduction of copper and levonorgestrel-releasing intrauterine devices (IUDs) as alternatives to inert ones. Additionally, combined injectable contraceptives, hormonal patches and rings, progestogen-only injectables, and implants have been introduced in the last four years.
What Are the Recent Advances in Contraception?
-
Sino- Implant II: The Sino-implant II is a contraceptive method that consists of two small, flexible rods containing a progestin hormone called levonorgestrel. It is designed to be inserted just under the skin of a woman's upper arm, where it slowly releases the hormone over a period of three years. This implant works by preventing ovulation, thickening the cervical mucus to block sperm, and thinning the lining of the uterus to inhibit implantation. It is highly effective, with a failure rate of less than one percent. The Sino-implant II is widely used in China and other countries as a long-acting reversible contraceptive option that offers convenience, effectiveness and a high level of user satisfaction. It is considered a safe and cost-effective method of family planning.
-
SILCS Diaphragm: The SILCS diaphragm is a barrier contraceptive device designed to prevent pregnancy by blocking the sperm's entry into the cervix. It is made of a soft, silicone material that is easy to insert and comfortable to wear. Unlike traditional diaphragms, the SILCS diaphragm is a one-size-fits-most device, eliminating the need for multiple sizes and professional fitting. It features a unique shape with a contoured rim that conforms to the woman's anatomy for a secure fit and optimal effectiveness. The SILCS diaphragm can be used with or without a contraceptive gel and can be inserted up to six hours before intercourse. It is reusable and can last for up to two years with proper care. The SILCS diaphragm offers a non-hormonal, woman-controlled method of contraception that provides flexibility and protection against unintended pregnancy.
-
NES/EE Contraceptive Vaginal Ring (CVR): The NES/EE contraceptive vaginal ring (CVR) is a hormonal contraceptive method that combines the hormones etonogestrel (NES) and ethinyl estradiol (EE) in a flexible ring form. The ring is inserted into the vagina and releases a continuous low dose of hormones over a three-week period. It works by preventing ovulation, thickening the cervical mucus, and thinning the lining of the uterus to inhibit fertilization and implantation. The NES/EE CVR offers a convenient and discreet method of contraception. It is self-administered and does not require daily attention like oral contraceptives. The ring is typically inserted for three weeks, followed by a one-week ring-free period, during which menstruation occurs. After the ring-free week, a new ring is inserted to begin the next cycle.
-
Progestin Implants: Progestin implants are a highly effective and long-acting form of contraception. They consist of small rods or capsules containing synthetic progestin hormones, which are inserted beneath the skin. These implants steadily release the hormone into the bloodstream, preventing ovulation and thickening the cervical mucus to block sperm. Progestin implants provide contraception for several years, offering convenience and eliminating the need for daily administration. They have a high efficacy rate and can be easily removed when desired, allowing for a quick return to fertility. Progestin implants are a popular choice among individuals seeking reliable and reversible contraception with minimal user effort.
-
Emergency Contraception: Emergency contraception, often referred to as the "morning-after pill," is a method used to prevent unintended pregnancy after unprotected sex or contraceptive failure, such as a broken condom or missed birth control pills. It is designed to be taken as soon as possible after intercourse, ideally within 72 hours, although some options can be effective up to 120 hours afterward.
Emergency contraception works by inhibiting ovulation, preventing fertilization, or altering the uterine lining to prevent the implantation of a fertilized egg. There are different types available, including dedicated emergency contraceptive pills (such as levonorgestrel or ulipristal acetate) and the copper intrauterine device (IUD) used as emergency contraception.
Emergency contraception does not protect against sexually transmitted infections (STIs) and is not intended as a regular form of contraception. It is meant to be used in emergency situations only.
-
Post-Abortion Contraception: Post-abortion contraception refers to the use of contraceptive methods following an abortion to prevent future pregnancies. It is an important aspect of comprehensive reproductive healthcare, ensuring that individuals have access to effective contraception after terminating a pregnancy.
After an abortion, whether it is a surgical procedure or medication-induced, the individual's fertility can return quickly. Therefore, it is crucial to initiate contraception promptly to prevent unintended pregnancies. Various contraceptive options can be utilized based on individual preferences, medical history, and suitability.
Immediate post-abortion contraception commonly includes methods such as intrauterine devices (IUDs), both copper and hormonal, which can be inserted immediately after the procedure. IUDs are highly effective and provide long-term contraception. Other options include contraceptive implants, injectables, combined oral contraceptives, progestin-only pills, and barrier methods like condoms.
-
Postpartum Contraception: Postpartum contraception refers to the use of contraceptive methods after childbirth to prevent unintended pregnancies. It is crucial as fertility can return rapidly after giving birth, even before the resumption of regular menstrual cycles. Various contraceptive options are available, including hormonal methods such as progestin-only pills, contraceptive implants, and hormonal intrauterine devices (IUDs). Non-hormonal methods like copper IUDs and barrier methods like condoms are also suitable choices. The choice of postpartum contraception depends on individual preferences, medical history, and future reproductive plans. Access to postpartum contraception allows individuals to make informed decisions about spacing pregnancies and ensuring reproductive health and family planning.
-
Depo-SubQ Provera 104 in the Uniject Device: Depo-subQ Provera 104 in the Uniject device is a form of a contraceptive injection that combines the benefits of the contraceptive hormone medroxyprogesterone acetate (MPA) with a user-friendly delivery system. The Uniject device is a prefilled, single-use syringe that allows for easy and accurate administration of contraceptive medication. Depo-subQ Provera 104 is given as a subcutaneous injection, typically into the abdomen or thigh, every 12 to 14 weeks. It provides effective contraception by inhibiting ovulation, thickening cervical mucus, and thinning the uterine lining. This method offers a convenient and discreet option for individuals seeking long-acting contraception with a high level of effectiveness.
Conclusion
In conclusion, recent advancements in contraception offer individuals a wide range of options to meet their needs. From long-acting methods like Sino-implant II and progestin implants to emergency contraception and post-abortion/postpartum options, there are effective choices available. The introduction of Depo-subQ Provera 104 in the Uniject device provides a user-friendly injectable option. These developments promote family planning and reproductive autonomy and ensure access to reliable contraception.
