Key Facts Cheat Sheet
Dates and Numbers:
- India family planning programme: 1951 (world's first)
- MTP Act: 1971 (standard limit: 20 weeks)
- MTP 2021 amendment: 24 weeks for special categories
- PCPNDT Act: 1994 (bans sex determination by prenatal tests)
- LAM effective duration: up to 6 months (exclusive breastfeeding only)
- Rhythm method fertile window: Days 10–17
- ZIFT max developmental stage: 8-cell stage
- IVF-ET transfer stage: 8-cell stage or blastocyst
Effectiveness Ranking (lowest to highest): Rhythm (~75%) < Condoms (~82–98%) < LAM (~98%) < OC pills (~99%) < Cu-T (~99%) < LNG-20 (~99.8%) < Vasectomy/Tubectomy (~99.9%)
Mechanism Keywords:
| Method | Mechanism Keyword |
|---|---|
| Rhythm / LAM | Behavioral / Prolactin |
| Condoms | Physical barrier + STD protection |
| Cu-T | Cu2+ spermicidal + phagocytosis |
| LNG-20 | Levonorgestrel → mucus + endometrium |
| OC pills | Suppress GnRH → no LH surge → no ovulation |
| Saheli | Centchroman → block estrogen receptors → no implantation |
| Vasectomy | Cut vas deferens (male) |
| Tubectomy | Cut fallopian tubes (female) |
ART Transfer Sites:
- → Fallopian tube: ZIFT, GIFT
- → Uterus: IVF-ET, ICSI, AI/IUI
STD Pathogen Types:
- Bacteria: N. gonorrhoeae, T. pallidum, C. trachomatis
- Viruses: HSV-2, HBV, HIV
- Protozoa: T. vaginalis