Hormonal Contraceptives and Female Reproductive Cycle

Hormonal Contraceptives

  • Definition and Composition
    • Hormonal contraceptives include progesterone alone or combinations of estrogen and progesterone.
    • Forms: oral, injected, or implanted.
  • Mechanism of Action
    • Prevent ovulation.
    • Alter the uterine lining.
    • Change cervical mucus to prevent sperm entry into the uterus.

Health Risks Associated with Hormonal Contraceptives

  • Estrogen-related Risks
    • Can activate blood-clotting mechanisms leading to venous thrombosis.
    • High doses of estrogen may raise blood pressure, causing hypertension.
    • Women who smoke experience vasoconstriction; combined with estrogen, this increases risks for:
    • Cerebral vascular accident (stroke).
    • Myocardial infarction (heart attack).
  • Contraindications
    • History of deep vein thrombosis (DVT) or pulmonary embolism (PE).
    • Untreated hypertension.
    • Age over 35.
    • Cigarette smoking.
    • History of breast cancer.

Types of Hormonal Contraceptives

  • Combined Oral Contraceptives (OCP)
    • Commonly referred to as “the pill.”
    • Contain 21 hormones + 7 inert pills or a 91-day formulation (4 periods/year).
    • Advantages:
    • Highly effective.
    • Easy to use.
    • Regular menstrual periods.
    • Decreased menstrual cramps.
    • Disadvantages:
    • No STI protection.
    • Potential side effects: nausea, breast tenderness, headaches, breakthrough bleeding.
    • Failure with inconsistent use.
  • Progestin-Only Pill (Mini-Pill)
    • Contains only progestin; taken daily at the same time.
    • Safe for breastfeeding mothers.
    • Advantages: Similar to OCPs but without estrogen-related risks.
    • Disadvantages: Requires strict adherence to timing of dosage to prevent failure.
  • Implants
    • Thin rod inserted under the skin; releases progestin over 3 years.
    • Advantages:
    • Long-term contraception.
    • No daily medication required.
    • Disadvantages:
    • Minor surgical procedure required for insertion/removal.
    • Difficult removal possible.
  • Transdermal Patch
    • Worn on skin, releasing hormones weekly for 3 weeks, with a patch-free week for menstruation.
    • Advantages:
    • Reduced nausea and breast tenderness compared to pills.
    • Disadvantages:
    • Skin irritation.
    • Risk of patch detachment.
  • Vaginal Ring
    • Flexible ring inserted into the vagina for 3 weeks.
    • Advantages:
    • Reduced side effects.
    • Disadvantages:
    • Comfort required for insertion.
    • May slip out during intercourse.
    • Risk of vaginal irritation.
  • Injectable Contraceptive (Depot Medroxyprogesterone Acetate)
    • Administered as an intramuscular injection every 3 months.
    • Advantages:
    • Safe for breastfeeding.
    • Disadvantages:
    • Requires regular appointments.
    • Potential weight gain, mood swings, bone density loss.
    • No STI protection.
  • Intrauterine Devices (IUD)
    • T-shaped device inserted into the uterus (copper or hormonal).
    • Advantages:
    • Effective for 3-10 years.
    • Over 99% effective.
    • Convenient (less maintenance needed).
    • Disadvantages:
    • Requires pelvic exams for insertion.
    • Risk of uterine perforation.
    • Does not protect against STIs.

Patient Education Guidelines for Contraceptive Use

  • Oral Contraceptives
    • If one pill is missed, take it as soon as recalled. No need for backup birth control.
    • If two or more pills are missed, take the last missed pill and use backup contraception until menstruation starts.

Pelvic Floor Disorders

  • Definition
    • Disorders involving prolapse of pelvic organs due to weakness/injury to ligaments and muscles.
  • Contributing Factors
    • Childbirth, obesity, hysterectomy, aging.
    • Activities that increase abdominal pressure (heavy lifting, straining).
  • Types of Disorders
    • Cystocele: Bladder prolapse causing incontinence.
    • Rectocele: Rectum prolapse affecting bowel movements.
    • Uterine prolapse: Uterus dropping into the vagina causing pain and difficulty urinating.
  • Treatment Options
    • Kegel exercises.
    • Pessaries for support.
    • Possible surgical repair.

Female Reproductive Cycle

  • Follicular Phase
    • Initiated by follicle-stimulating hormone (FSH).
    • Estrogen secretion thickens the endometrium.
  • Luteal Phase
    • Begins after ovulation when luteinizing hormone (LH) levels peak.
    • Corpus luteum secretes progesterone.
    • If no fertilization, degeneration occurs, leading to menstruation.
  • Menstrual Cycle
    • Cycle begins on the first day of bleeding and ends on the first day of the next cycle.

Fetal Development and Pregnancy

  • Pregnancy Indicators
    • Positive signs (confirmed signs of pregnancy): Fetal heart auscultation, silhouette on ultrasound, etc.
  • Hormonal Changes
    • Human chorionic gonadotropin (hCG) production confirms pregnancy.
    • Estrogen supports fetal growth and development.
    • Progesterone maintains the endometrium.
  • Placenta Function
    • Transfers oxygen, nutrients, and waste products between mother and fetus.
    • Produces hormones to support pregnancy.

Nursing Care Considerations

  • Ensure emotional support for mothers facing complications such as Rh incompatibility.
  • Provide education about breastfeeding benefits and positions for successful feeding.
  • Monitor newborn development and complications, including jaundice, feeding difficulties, and hypoglycemia.
  • Assess and document newborn skin assessments and breast-related care including circumcision and umbilical cord management.