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Emergency contraception in Hungary Professor George Bartfai
Dept of Ob/Gyn, Univ of Szeged, Hungary
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Content Definition History Indication Mechanism of action Methods
Effectiveness, Timing Contraindications Follow-up Awareness, access to EC, OTC Recommendations
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In the US about 50% of the pregnancies are unwanted and half of them occur due to method or patient failure (Henshaw, 1998).
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The number of deliveries and abortions in Hungary
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Definition Emergency contraception refers to a particular type of contraception that is used as an emergency procedure to prevent pregnancy following unprotected, possibly fertile, intercourse. Van Look, Br. Med.Bull. 1993
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History Postcoital hormonal contraception with high-dose diethylstilboestrol or ethinyl estradiol for rape victims in 1960s van Wagenen, Morris, Haspels Combined regimen (E2 & P) early 1970s (Yuzpe) IUD as an EC has been applied first in 1976 (Lippes) LNG only 1980s RU-486, mifepristone 1990s
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Indications for emergency contraception
1. Unprotected intercourse No method-especially first-time intercourse Coitus interruptus/failed coitus interruptus Ejaculation on external genitalia Miscalculation of the rhythm method (fertility awareness method/periodic abstinence) Spermicide use alone in woman at high risk of pregnancy
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Indications for emergency contraception (cont)
2. Potential barrier method failures Condom rupture, dislodgement or misuse Diaphragm or cap inserted incorrectly, dislodged during intercourse, found to be torn or removed too early 3. Potential pill failures Missed pills 4. Potential IUD failures Complete or partial expulsion of an IUD Midcycle IUD removal considered absolutely necessary
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Indications for emergency contraception (cont)
5. Sexual assault Is an important indication for EC. Providers must be aware of STI. Police involvement-forensic tests. Woman may require long-term emotional support. 6. Recent use of suspected teratogens Drugs, e.g. cytotoxics Live vaccines such as yellow fever
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Mechanism of action Prevention of ovulation, fertilization or implantation depending on the time of administration relative to the appropriate part of the menstrual cycle.
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Mechanism of action In humans the contraceptive effects of both LNG and mifepristone, when used for EC, involve either blockade or delay of ovulation (prevention or delay of the LH surge) rather than to inhibition of implantation. Gemzell-Danielsson, 2004
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Action on endometrium Disappearance of microvilli, flattering of the cylindric epithelium and its cobblestone like appearance: on rabbits (Ugocsai et al 1984), in humans (Nikas et al 1995).
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Recently, treatment with either 10 mg mifepristone or 1,5 mg of LNG has emerged as the most effective hormonal method for emergency contraception with very low side-effects. Gemzell-Danielsson, 2004
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METHODS OF EMERGENCY CONTRACEPTION
Ethinyl estradiol with LNG (Yuzpe regimen) LNG alone IUD Mifepristone (antiprogesterone) GnRH antagonists
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Yuzpe method 2 tablets: EE (0.05mg) + LNG (0.25mg)
Administration within 72 hours 1st dosage followed by the 2nd 12 hours later
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Licenced products in Hungary
Rigesoft (2x1): 0,75 mg LNG Escapelle (1x1): 1.50 mg LNG Fertilan is not registered anymore
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Sales of Rigesoft in Hungary
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Effectiveness of Postinor®
cycle coitus pregnancy Pearl index effectiveness 0,83+/-0,44 coitus/pregnancy ,9% Gy. Seregély, 1986
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Efficacy of EC methods Method No. of Reduction pregnancies %
No treatment Yuzpe regimen LNG only Mifepristone IUD If women have unprotected intercourse once in the middle of the cycle Am.Family Phys.2004
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Efficacy of EC Method No. of No. of unprotected unwonted
intercourse pregnancy No contraception LNG No contraception 7 million prevented pregnant LNG (10% used) LNG (50% used) 3.5 mill
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Effectiveness The chance of pregnancy after single unprotected intercourse is 8% (Trussel J. 1982) The likelihood of pegnancy is decreased by 75% using EC.
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Efficacy of EC and time of treatment
Percentage of expected pregnancies prevented 100 95 83 79 66 61 47 50 0 - 12 Delay between intercourse and time of treatment with EC
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Emergency Contraception
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Percentage of expected pregnancies prevented in relation to the delay between intercourse and time of treatment with EC Time of treatment Levonorgestrel % Yuzpe Within 24 hours 95 77 24-48 hours 85 36 48-72 hours 58 31 WHO 1998.
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EC is less effective than consistent use of any other reliable methods
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06-30-30-30-456 EC outpatient clinics in Hungary 5 3 2 4 1 6+1 2 5
Telephone-number of EC out-patient clinics in Hungary 5 3 2 4 1 6+1 2 5
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Outpatient clinics supported by the Industry: 58
Age No of patients < 20 yrs > 20 yrs /year /month No previous contraception (40.43%)
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Youth friendly health service
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Progestin-only regimen containing levonorgestrel was found to be more effective than the Yuzpe regimen and caused significantly less nausea and vomiting.
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WHO trials (1) Randomized double blind multicenter trial of LNG (0.75 mg) vs Yzpe (0.1 mg EE mg LNG) two doses 12 h apart within 72 h concluded: LNG regimen is more effective better tolerated WHO, Lancet 1998
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WHO trials (2) Randomized double blind multicenter trial compared 3 single doses of Mifepristone up to 120 h. WHO, Lancet 1999
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Conclusions: LNG is more effective than Yuzpe regimen with less side effects Single dose of Mifepristone (10 mg) is effective but some delay expected in the onset of menses
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Aim of the present research activity
simplify the treatment modality ( single dose ) extended the administration up to 120 h since intercourse to compare: the compliance: the effectiveness the acceptability WHO 2001
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Safety No protection against HIV and STD!
No change in clotting factors (A. Webb 1993) No effect on lactation There is no increase in fetal malformation using E/P or P regimens (MB. Bracken 1990) No protection against HIV and STD!
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Contraindication: pregnancy
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Contraindications to emergency contraception
Royal College obst. Gyna
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Onset of menses after Mifepristone
Early onset (>5 days) 9,6 In time ,9 Late onset (>5,13±7) 20,0 WHO 1997
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continued risk of pregnancy
Delay of ovulation = late return of menses continued risk of pregnancy recommend the use of contraception if abstaining is not possible later relieved from anxiety about unwanted pregnancy
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Follow-up Proper contraceptive counselling emphasised.
In case of regular menses follow-up is not important.
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Limits to Access to EC 72 hour time limit Prescribed by a doctor
Often required at a weekend Embarrassment Fear about confidentiality Inertia
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Emergency Contraception OTC
Dangerous Encourages promiscuity Discourages safe sex Improper use /abuse/ misuse Recurrent use Abandon more reliable methods
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Flow chart (1) Yes Patient requests emergency contraception
Pregnancy test, vaginal examination ultrasound and manage accordingly Could she be pregnant already? Yes No Enquire re last menstrual period, cycle length and exposure day of cycle. Assess risk IUD an option as long as within 5 days of earliest ovulation Did intercourse take place within the previous 72 h? No Counsel, screen for infection and fit copper IUD Yes Kubba, A. 2001
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Flow chart (2) Is there a history of thromboembolism or current migraine with past history of migraine with focal aura Yes No Emergency combined pills or LNG suitable Yes 1. Check blood presure 2. Give verbal information and patient information leaflet 3. Prescribe pills and consider antiemetic use 4. Arrange ongoing contraception 5. Arrange follow-up 6. Complete records Recommend IUD or progestogen only method Kubba, A. 2001
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No women can call herself free who does not controll her body
Margaret Sanger 1920
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Thank you for your attention
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