Related Experiment Video
Updated: Aug 7, 2026

04:37
Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
Published on: May 12, 2019
Summary
Postpartum women in rural Bangladesh using oral contraceptives (OCs) have shorter pregnancy intervals due to reduced duration of OC use. This impacts family planning effectiveness for amenorrheic acceptors.
Area of Science:
- Reproductive Health
- Family Planning
- Demography
Background:
- Oral contraceptive (OC) continuation rates are lowest in rural Bangladesh, except for condoms.
- OC users' pregnancy rates are comparable to traditional methods, higher than injectables or IUDs.
Purpose of the Study:
- To investigate factors contributing to shorter pregnancy intervals among postpartum amenorrheic oral contraceptive acceptors compared to postamenorrheic acceptors.
Main Methods:
- Examined subintervals of the pregnancy interval.
- Compared amenorrheic and postamenorrheic OC acceptors matched on acceptance time, age, and parity.
Main Results:
- Amenorrheic OC acceptors demonstrated a significantly shorter duration of oral contraceptive use.
- This shorter duration of use outweighed a longer time to pregnancy after discontinuation.
Conclusions:
- Shorter duration of oral contraceptive use is the primary reason for reduced pregnancy intervals in postpartum amenorrheic acceptors.
- Findings highlight challenges in sustained oral contraceptive use for family planning in this population.
Related Concept Videos
Oogenesis
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
Ovarian Cycle
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
Birth Control Methods
Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although vasectomy...
Infertility in Females
Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of endometrial...
Endometriosis, a condition characterized by abnormal growth of endometrial...
Intrauterine Drug Delivery Systems
Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...

