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Phar 461 > Emergency Contraception > Flashcards

Emergency Contraception Flashcards

1
Q

What percentage of pregnancies in women <25 years old end in abortion?

A

43.9%

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2
Q

Mechanism of levonorgestrel

A

Delays or inhibit ovulation early in the cycle prior to LH surge

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3
Q

Levonorgestrel delays ovulation for about ___ days, so you want to use barrier method for ___ days after taking ECP.

A

2-3 days; 7 days (beyond the 5 days of sperm lifespan)

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4
Q

What is the expected pregnancy rate? and the average effectiveness of ECP in percentages?

A

Pregnancy rate is 4%; 50-60% effective

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5
Q

When do you need to use EC when on depo-provera?

A

If you it’s been more than 14 weeks since you’re last injection

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6
Q

When do you need to use EC when on progestin only pill?

A

If missed for more than 3 hours

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7
Q

When do you need to use EC when on combination OC?

A

1st week - missed pill for 1 day or more

2nd/3rd week - missed pill for more than 3 days

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8
Q

When do you need to use EC when on Evra patch?

A

1st week - detached for more than 1 day

2nd/3rd week - detached for 3 or more days

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9
Q

When do you need to use EC when on NuvaRing?

A

1st week - more than 3 hours

2nd/3rd week - 3 or more hours

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10
Q

What is the dose and regime for levongestrel as ECP?

A

0.75mg 2 tabs stat (or 1 tab q12h)

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11
Q

Which combination OC are used for ECP?

A

Alesse and Minorvral

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12
Q

What is the dose and regimen for combination OC as ECP?

A

EE 0.1mg + LNG 0.5mg or EE 0.1mg + Norgestrel 1mg

repeat in 12 hours

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13
Q

How long does it take for ECP to be absorbed?

A

1 hour

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14
Q

What dose of gravol would you recommend for antiemetic?

A

50mg

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15
Q

What is the Infant Act of BC?

A

<19 years of age can give consent to HCP without consent from parent

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16
Q

What is the Child, Family, and Community services act?

A

Obligation to report abuse of a child

17
Q

What warrants a referral to the physician?

A

No menses after 3 weeks, STI, possible abuse, initiation of BCP

18
Q

What schedule is levonorgestrel?

A

Schedule 3 but if unlabelled for ECP use then schedule 2

19
Q

What is the mechanism of ulipristal?

A

It prevents follicle rupturing and inhibits ovulation when given just before ovulation

20
Q

What is the dose and regimen of ulipristal for ECP?

A

30mg taken within 120 hours

21
Q

What is ulipristal indicated for?

A

Uterine fibroids so EC is off label use

22
Q

What is the mechanism of copper IUDs?

A
  • Prevents implantation
  • Destroys oocyte in fallopian tubes
  • Decreases motility, viability, and fertilizing ability of the sperm
23
Q

What is a major risk of concern with copper IUD?

A

PID - but risk drops to baseline after 3 weeks

24
Q

Within what time frame is copper IUD effective?

A

Within 7 days

25
Q

What are the SE of copper IUD?

A

More pain and more bleeding

Phar 461 (5 decks)

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