Complete Contraception Masterclass: Spacing & Terminal Methods | Dr. Priyanka Sachdev

Main ideas / lessons conveyed

1) Core definitions: fertility, family planning, eligible couples

• Fertility (general): ability of a couple to bear children.
• Fertility in males: from puberty to death (as taught).
• Fertility in females: depends on age.
  • Menarche/minarche (~13–15 years): start of menstruation → fertility begins
  • ~45–50 years: menopause → fertility ends
  • Taught fertile window: ~15 to 45 years (≈ 30 years)
• Family planning: when couples plan when to have children using birth control.
  • Contraception: the birth control methods used in family planning.

2) Eligible couples & Couple Protection Rate (CPR)

• Eligible couple: any couple where the wife is within reproductive age (taught as 15–45 years).
• Couple Protection Rate (CPR):
  • Definition: among all eligible couples, the % using contraception at the time of intercourse.
  • Goal stated: CPR ≥ 60%
  • Government-approved methods (4 types):
    1. Male condom
    2. OCP (oral contraceptive pills)
    3. IUD / IUC-D
    4. Sterilization (terminal methods)

3) “Ideal contraceptive” concept

• Criteria for an ideal contraceptive (taught):
  • Safe
  • Effective
  • Inexpensive
  • Reversible
  • Simple to use
  • Independent of coitus
  • Long lasting
  • Minimal medical supervision
• Lesson: no method is truly “ideal”; all have pros/cons.

4) Classification of contraceptive methods: spacing vs terminal

• Spacing methods: temporary suppression of fertility (reversible).
• Terminal methods: permanent suppression of fertility (sterilization).
  • Male sterilization: vasectomy
  • Female sterilization: tubectomy

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Method-by-method content (instructional / list format)

A) Natural (spacing) methods — taught as 7 types

Common principle: identify the unsafe/fertile window in the female menstrual cycle; avoid intercourse during ovulation.

1) Calendar (Rhythm / Safe period) method

• Basis: menstrual cycle length predicts ovulation timing.
• Unsafe (fertile) period formula:
  • Unsafe/Fertile period = (shortest cycle − 18) to (longest cycle − 10)
  • Intercourse not allowed during this unsafe period.
• Safe period concept: intercourse allowed before and after the unsafe window.
  • Taught note: the first ~5 days are menstruation → intercourse avoided.
• Drawbacks:
  • Needs tracking; hard with irregular cycles
  • High failure rate
  • Not useful in the postnatal period (as stated)

2) Basal Body Temperature (BBT) method

• Basis: slight temperature rise after ovulation due to progesterone.
• Method steps (as taught):
  • Use a very accurate thermometer
  • Measure daily in the morning before getting out of bed
• Interpretation:
  • Ovulation day shows a slight rise (taught as ~0.3–0.5°C)
• Avoid intercourse:
  • Avoid during the ovulation period and for the next ~3 days after the rise (taught)
• Drawbacks:
  • Requires correct abstinence after ovulation
  • Not practical if intercourse occurs before temperature rises
  • High failure rate

3) Cervical mucus (Billing / Ovulation) method

• Basis: cervical mucus changes with hormones.
• Method steps (as taught):
  • Check cervical mucus daily after menstruation
  • Identify types:
    • During ovulation: watery/slippery/profuse, may form a “string” (egg-white analogy)
    • Other days: tacky/cloudy, not stringy
  • Avoid intercourse when mucus is stringy/slippery/profuse
• Drawbacks (as summarized):
  • Requires very high motivation (daily checking)
  • High failure rate

4) Symptom (very high-yield) — combination method

• Combines:
  • Safe period (calendar/Rhythm)
  • BBT rise
  • Cervical mucus stringy/slippery
• Key lesson: combining improves effectiveness vs using one method alone.
• Failure rate: taught as lower than individual methods.

5) Abstinence

• Definition: complete absence of sexual intercourse.
• Lesson: 100% effective, but not practical as a contraception method since it involves no intercourse.
• Contra note taught: issues like premature ejaculation can be relevant (as stated).

6) Coitus interruptus (withdrawal)

• Method: withdraw penis just before ejaculation.
• Failure: taught as high (~25%).

7) Lactational Amenorrhea Method (LAM / Lamb)

• Basis: exclusive breastfeeding suppresses ovulation via hormonal mechanisms.
• Effectiveness conditions (3 conditions taught):
  1. Baby is on exclusive breastfeeding (fed about every 2–3 hours)
  2. Baby age < 6 months
  3. Mother has not resumed menstruation for ~6 months post-delivery
• Failure rate: taught as ~5 per 100 women-year (low)

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B) Barrier methods (spacing) — 2 categories

Types

• Physical barriers (4):
  1. Male condom
  2. Female condom
  3. Diaphragm
  4. Vaginal sponge
• Chemical barrier:
  • Nonoxynol-9 (spermicidal)

1) Male condom

• Key function: prevents semen deposition; also helps protect against STDs.
• Advantages (taught):
  • widely used, safe, inexpensive, no medical supervision, disposable
  • reduces risk of HPV-related cervical dysplasia/cervical cancer
  • protects against STDs including HIV (as stated)
• Disadvantage (taught):
  • contact dermatitis to female partner

2) Female condom

• Other names (taught): “reality/famshield” (multiple trade/scientist names referenced).
• Structure: two rings (internal and external)
• Advantages (taught):
  • reusable
  • female-controlled (less need for male cooperation)
  • also helps protect against STDs and HIV (as stated)
• Exam-focused differentiators (taught):
  • Male condom: typically 1 ring; usually not reusable
  • Female condom: 2 rings; reusable
  • failure rate: comparatively lower for male, relatively higher for female (as taught)

3) Diaphragm

• Use (taught):
  • inserted by female just before intercourse
  • must remain during intercourse and be removed within ~6 hours (taught)
  • do not leave longer (risk increases)
• Adverse effect emphasized:
  • Toxic shock syndrome if left too long
• Other limitations (taught):
  • can increase risk of UTI, yeast infection, bacterial vaginosis
  • not protective against STDs

4) Vaginal sponge

• Composition (taught):
  • contains nonoxynol-9 (spermicidal) + acts as barrier
• Use (taught):
  • inserted just before intercourse
  • once (not reusable)
  • must not be left > 6 hours
  • if left too long → higher risk of toxic shock syndrome
• Disadvantages (taught):
  • allergy possible; vaginal dryness/itching/soreness possible
  • not protective for STDs/HIV
  • higher risk of fungal infections and UTI if misused

Nonoxynol-9 mechanism (as taught)

• Nonoxynol-9 = spermicidal
• Mechanism described:
  • surface-active agent binding sperm
  • inhibits oxygen uptake → sperm killed
• Admin method (taught):
  • gel/jelly/syringe without needle, inserted before intercourse

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C) IUD / IUC-D (intrauterine contraceptive devices)

Core concept

• Inserted by trained personnel (gynecologist/doctor).
• Reversible upon removal.
• Lesson emphasized: placed in uterus, not cervix/vagina.

Types / “generations” (as taught)

• First generation (non-medicated): no active drugs
  • examples: Lippes loop, Grafenberg ring
  • not preferred due to higher failure/side effects
• Second generation (medicated with copper): copper-containing
  • examples: Copper T 7, Copper T 220, Copper T 380, etc.
• Third generation (medicated with hormones):
  • Progestasert (hormonal IUD)
  • LNG IUD (taught as LNG / “Mirena”)

Exam facts explained (high focus)

• Copper numbers (e.g., “380”):
  • represent surface area of copper in mm² (not total device size)
• Letters (A, B, C, D):
  • represent uterus size fit:
    • A = smallest, D = largest
• Tail/threads concept:
  • female should check threads daily
  • missing tails → possible expulsion or perforation
  • perforation → severe pain; report immediately

Mechanism of action (as taught)

• Main mechanism: inhibits implantation
  • ovulation and fertilization may occur
  • but endometrium becomes unfavorable → embryo cannot implant
• Not a sperm-ova barrier method (explicitly contrasted with OCP later)

Duration / shelf life (taught)

• Most copper T: 3–5 years
• Copper T with silver (e.g., Cu T 380A / Ag): 10 years
• Progestasert: ~1 year
• LNG (Mirena): ~7–10 years

Side effects (5) and exam points

1. Bleeding (most common)
   • may continue ~1–2 months, then settles
   • usually does not require removal unless severe
2. Pain (second most common)
   • may settle in 1–2 months
   • removal may be required if unbearable (taught)
   • especially with size mismatch/perforation risk
3. PID (pelvic inflammatory disease)
   • organisms referenced: Gardner anaerobes, streptococci, bacteroides, etc.
4. Perforation (rare)
   • more likely in retroverted/anate uterus
   • severe pain; visible on X-ray within ~48 hours (taught)
   • remove ASAP
5. Spontaneous expulsion
   • due to size disparity / during menstruation when canal widens (taught)

“Highest/lowest” rankings (as taught)

• Highest pregnancy rate: Lippes loop (first generation)
• Lowest pregnancy rate / efficacy: LNG (third generation)
• Highest expulsion: Lippes loop
• Lowest expulsion: Progestasert
• Highest pain/removal: LNG
• General lesson: newer generations tend to be better in efficacy and expulsion, but side effects still exist.

Ideal candidate / insertion criteria (taught)

• Should have at least one child before insertion
• Should be in mutual monogamous relationship
• No history of PID emphasized
• Avoid in high-risk STD groups (as described in narrative)

Absolute contraindications (pneumonic taught)

• Pneumonic: “P P D C”
  • P = Pregnancy
  • P = Puerperal sepsis
  • D = D trophoblastic disease
  • C = Cervical cancer and Endometrial/uterine cancer
• Lesson: if any absolute contraindication exists, IUD not used.

Best timing for insertion (as taught)

• Best time: during menstruation, ideally within day 1–10
• Reasons:
  1. least chance of pregnancy (menstruation ongoing)
  2. cervical canal slightly widened → easier insertion

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D) Hormonal contraception (spacing)

Types

• Oral
• Injectable

Oral contraceptive pills (OCP): core mechanism

• Composition: estrogen + progesterone (fixed composition)
• Main mechanism (taught):
  • inhibits ovulation via negative feedback on hypothalamus/pituitary → ↓ FSH/LH surge
• Backup mechanisms (taught):
  1. Thickens cervical mucus → reduced sperm penetration
  2. Makes endometrium unfavorable for implantation even if fertilization occurs

OCP types discussed (monophasic)

• Monophasic types taught: Mala-D, Mala-N, Fanon/Panon
• Estrogen identity (taught): ethiny estradiol
• Progesterone identities (taught):
  • Mala-N: norethindrone/norestrol (as said)
  • Mala-D & Fanon: desogestrel/deson (as said)
• Low-dose estrogen emphasized to reduce cardiovascular risk.

OCP schedule (taught broadly)

• 28-day pack:
  • first 21 days: active hormonal pills
  • last 7 days: iron pills (to complete cycle)
• Start day: day 5 of menstruation
• Missed pill guidance (week-wise protocol):
  • 1–2 pills missed: take as soon as remembered; use condom backup for 7 days
  • ≥3 pills missed (especially certain weeks): follow specific instructions (including taking remembered pill and restarting pack + condom backup)

OCP adverse effects (taught as categories)

• Cardiovascular (estrogen-related):
  • MI, cerebral thrombosis, venous thrombosis, DVT, hypertension
• Metabolic (progesterone-related):
  • obesity, altered lipid profile, hyperglycemia/diabetes tendency, BP changes
• General:
  • breast tenderness, weight gain/water retention, headache/migraine, bleeding disturbances
• Carcinogenic concerns (taught):
  • increased risk of breast cancer and cervix cancer with prolonged use
  • “non-specific malignant/benign” risks mentioned in narrative (including liver-related tumor mention)

Beneficial effects (taught)

• Reduced risk of:
  • colon cancer, ovarian cancer, endometrial cancer
• Useful for (taught):
  • benign breast disorders, anemia contexts, some ovarian disorders, etc.

Absolute contraindications checklist (pneumonic taught)

• Pneumonic: “B A N V S T P H L D M”
  • B = breast cancer / family history
  • H/Hype = hypertriglyceridemia/lipid issues
  • V = vaginal bleeding (undiagnosed)
  • S = smoker (age >35)
  • T = thromboembolism/thrombosis history concern
  • P = pregnancy
  • H = hypertension
  • L = liver dysfunction
  • D = diabetes
  • M = migraine with aura
• Lesson: if any present → don’t prescribe OCP.

Injectable progestin-only contraceptives

• DMPA: repeat every 3 months
• NET-EN: repeat every 2 months
• Both are progestin-only.

“Newer” contraceptives mentioned

• Norplant
  • small capsules implanted under skin (inner arm)
  • releases hormone daily; lasts ~5 years
• Isure (as claimed; not in India in narrative)
  • microinsert placed in fallopian tubes (tubal occlusion concept)
• Transdermal patch
  • releases estrogen + progesterone
  • one patch for 7 days
  • 3 weeks on, 1 week break (as taught)

Male pill (brief historical note)

• “Gosip/gossip” concept discussed
• Withdrawn due to toxicity and permanent azospermia risk
• Mentioned as exam point: “contains gosip”

Emergency contraception

• Used after unprotected intercourse or contraception failure/breakage/missed pills/safe-day miscalculation/withdrawal failure/rape.
• Timing (taught):
  • effective within first 5 days (120 hours)
  • best within 72 hours
• Most common method taught:
  • Levonorgestrel (LNG)
  • 75 microgram tablets, 2 tablets together (total 1500 microgram = 1.5 mg) (text cut off in source)