Contraception Flashcards

1
Q

How does contraception preventing ovulation work?

A

By suppressing FSH and LH

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2
Q

How does conctraception preventing fertilisation work?

A

Creates a mechanical or surgical barrier or direct toxicity

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3
Q

How does contraception preventing implantation work?

A

Creates a hostile endometrium or direct toxicity

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4
Q

Which methods of contraception prevent ovulation?

A

Most hormonal methods

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5
Q

Which methods of contraception prevent fertilisation?

A

Condoms, diaphragm + spermicide, female and male sterilisation, intrauterine devices, hormonal methods- cervical mucous

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6
Q

Which methods of contraception prevent implantation?

A

intrauterine devices, hormonal methods

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7
Q

What must a diaphragm be used with?

A

Spermicide

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8
Q

List some benefits of hormonal contraception

A

Reduced;

  • period pain
  • menstrual bleeding
  • irregular PV bleeding
  • ovulation pain
  • PMS
  • Breast tenderness
  • ovarian cysts
  • endometriosis
  • ovarian cancer
  • acne
  • hirsutism
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9
Q

Which forms of contraception will reduce PV bleeding?

A

Combined hormonal contraception
Intrauterine system
DMPA

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10
Q

Which women cannot use IUS or IUD?

A

Women with submucosal fibroids

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11
Q

How long can the IUD last?

A

10 years

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12
Q

What are the downsides of the IUD?

A

Makes periods heavier, longer and more painful. especially during the 3/12 post insertion

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13
Q

Which women may benefit from the IUD?

A

Women after breast cancer

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14
Q

Which form of contraception is more effective than the IUD?

A

The IUS

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15
Q

What are the 4 main IUS devices ?

A

Mirena
Levosert
Kyleena
Jaydess

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16
Q

What is the mirena licensed for?

A

Heavy periods, can be part of HRT

Often useful in endometriosis or hyperplasia

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17
Q

What is common after insertion of the IUS?

A

Spotting in the first few months

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18
Q

What percentage of women have amenorrhoea on mirena at 6 months?

A

50%

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19
Q

What is nexplanon?

A

Subdermal contraceptive implant

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20
Q

What is the most effective of all contraceptive methods?

A

Nexplanon

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21
Q

How long does the nexplanon last?

A

3 years

22
Q

Which hormone/s is/are contained in the nexplanon?

A

Progestogen only

23
Q

What is the main side effect of nexplanon?

A

Prolonged PV bleeding

24
Q

What may be used to help bleeding on nexplanon?

A

Addition of the CHC

25
Q

What does UKMEC 1 mean?

A

Always useable, no increased risk(s) due to condition/characteristic

26
Q

What does UKMEC 2 mean?

A

Broadly useable, advantage(s) of method > risk(s) due to condition/characteristic- consider follow up

27
Q

What does UKMEC 3 mean?

A

Counsel/caution; risk(s) due to condition/characteristics > advantage(s) of method- expert opinion or specialist referral required

28
Q

What does UKMEC 4 mean?

A

Do not use, method contraindicated due to condition/characteristic; do not prescribe

29
Q

How should the COC be taken?

A

Start in the first 5 days of period
OR
At any time in cycle when reasonably sure not pregnant, plus condoms for 7 days

30
Q

What should be done if there is spotting during the COC?

A

Stop for 4 days and then restart

31
Q

What might impair the COC?

A
Impaired absorption;
-GI conditions
Increased metabolism;
-liver enzyme induction, drug interaction
Forgetting
32
Q

What are the risks of the COC?

A
Venous thrombosis
Arterial thrombosis
Adverse effects on some cancers
Systemic hypertension
Arterial disease
33
Q

How often should BP be checked on the COC?

A

Every 3 months

34
Q

What other risk factor may increase the risk of MI in COC users?

A

Smoking

35
Q

What BP indicates a higher risk of MI and stroke in COC users than hypertensive non-COC users?

A

Systolic >= 160mmHg

Diastolic <= 95mmHg

36
Q

What is migraine with aura?

A

A change occurring 5-20 minutes before the onset of headache

37
Q

What may an aura be?

A

Visual, scotoma, altered sensation, smell or taste, hemiparesis

38
Q

What is the risk of migraine with aura?

A

Increases the risk of ischaemic stroke- don’t give COC

39
Q

Which age automatically puts you in the UKMEC 2 category

A

> 35yrs

40
Q

What are the unwanted effects of the COC?

A

Breast cancer, 1.24 increased relative risk

Cervical cancer- small increased risk

41
Q

How long does breast cancer risk take to reduce to background after stopping COC use?

A

10 years

42
Q

How long does cervical cancer risk take to reduce to background after stopping COC use?

A

10 years

43
Q

What are the positive effects of COC?

A

Protection against ovarian (20% reduction for every 5 years of use to a maximum 50% reduction after 15 years use) and endometrial cancer (20-50% reduction)

44
Q

What are the benefits of combined hormonal contraceptives?

A
  • Beneficial effect on acne- antiandrogen/ progestogen/ antiglucocorticoid
  • less bleeding
  • fewer functional ovarian cysts
  • pre-menstrual syndrom
  • PCOS
45
Q

How should the POP be started?

A

Day 1-5 of period
OR
anytime if reasonably sure not pregnant plus condoms 2 days

46
Q

How does depo provera/sayana press work?

A

Lowers oestradiol

Supresses FSH

47
Q

How effective is the diaphragm?

A

71-88% effective with typical use

48
Q

How is vasectomy done?

A

Local or general anaesthetic

No-scalpel technique

49
Q

What are the complications of vasectomy?

A
  • Anaesthetic
  • Pain
  • Infection
  • Bleeding/haematoma
  • failure
  • non-motile sperm at 7 months
50
Q

What is the failure rate of female sterilisation?

A

2-3/1000

51
Q

Which method of female sterilisation is used in tayside?

A

Clip

52
Q

How effective is natural family planning?

A

76% effective with typical use