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Reproduction > Passmedicine - Contraception > Flashcards

Passmedicine - Contraception Flashcards

1
Q

Which criteria guides the use of contraceptions?

A

UK medical eligibility criteria (UKMEC)

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2
Q

What is UKMEC 1?

A

A condition for which there is no restriction for the use of the contraceptive method

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3
Q

What is UKMEC 2?

A

Advantages generally outweigh the disadvantages

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4
Q

What is UKMEC 3?

A

Disadvantages generally outweigh the advantages

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5
Q

What is UKMEC 4?

A

Represents an unacceptable health risk

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6
Q

Give examples of UKMEC 3 for the COC?

A

> 35 years old + smoking <15 cigs/day
BMI >35
FH of thromboembolic dx in 1st degree relatives <45y
Controlled HTN
Immobility, e.g. wheelchair use
Carrier of known gene mutations associated with breast cancer (e.g. BRCA1/2)
Current gallbladder dx

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7
Q

Give examples of UKMEC 4 for the COC?

A 
>35y old + smokes >15 cig/day
Migraine with aura
Hx of TE dx or thormbogenic mutation 
Hx stroke/IHD
Breastfeeding <6w post-partum
Uncontrolled HTN
Current breast cancer
Major surgery with prolonged immobilisation
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8
Q

What UKMEC is DM for the COC?

A

If diagnosed >20 years ago is 3/4 depending on severity

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9
Q

What UKMEC is breastfeeding 6w-6m post-partum for the COC?

A

2

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10
Q

How much oestrogen is in the COC and what form of oestrogen is it?

A

30-35micrograms of ethinylestradiol

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11
Q

What further action is needed if you miss 1 COC at any time in the cycle?

A

Take last pill even if it means two pills in 1 day, then continue taking pills as normal
NO ADDITIONAL CONTRACEPTION REQUIRED

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12
Q

What further action is needed if you miss 2 COC?

A

Take the last pill (even if that’s 2 pills in 1 day), then continue taking pills as normal

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13
Q

If 2+ COC pills are missed in week 1 of the cycle is additional contraception required?

A

Consider emergency contraception if she has had unprotected sex in pill free interval or week 1

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14
Q

If 2+ COC pills are missed in week 2 of the cycle is additional contraception required?

A

After 7 consecutive days of taking the COC there is no need for contraception

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15
Q

If 2+ COC pills are missed in week 3 of the cycle is additional contraception required?

A

Yes

Finish the pills in current pack, then start next pack (i.e. omit pill free interval)

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16
Q

When is a pill considered missed?

A

Once it has been 24h since the pill should have been taken

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17
Q

True or false:

theoretically the COCP protects from pregnancy if taken 7 days on and off

A

True

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18
Q

IUD = ?

A

Copper coil

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19
Q

IUS = ?

A

Levonorgestrel-releasing intrauterine system (mirena)

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20
Q

How effective are the IUD/IUS?

A

> 99%

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21
Q

What is the primary mode of action of the IUD?

A

Prevents fertilisation by causing decreased sperm motility + survival

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22
Q

What is the primary mode of action of the IUS?

A

Levonorgestrel prevents endometrial proliferation + causes cervical mucus thickening

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23
Q

How long does it take for the IUD to be an effective contraceptive once inserted?

A

Immediately

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24
Q

How long does it take for the IUS to be an effective contraceptive once inserted?

A

7 days

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25
Q

What problems are associated with IUDs?

A

Makes periods heavier, longer + more painful

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26
Q

What problems are associated with IUSs?

A

Initial frequent bleeding + spotting for the first 6m is very common

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27
Q

What are additional benefits of IUS?

A

Periods become lighter, with less dysmenorrhoea and some women may become amenorrhoeic

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28
Q

What are risks with intrauterine contraceptives?

A

Uterine perforation (higher in breastfeeding women)
If fall pregnant more likely to be ectopic than if not using an IUS/IUD
Infection (PID in 1st 20d after insertion)
Expulsion

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29
Q

When is expulsion of an intrauterine contraceptive most likely?

A

In first 3 months

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30
Q

What is the risk of expulsion with an intrauterine contraceptive?

A

1 in 20

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31
Q

How much levonorgesterol is in the jaydess coil?

A

13.5g

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32
Q

How much levonorgesterol is in the mierna coil?

A

52mg

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33
Q

How long is the jaydess coil licensed for?

A

3 years

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34
Q

How long is the mirena coil licensed for?

A

5 years

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35
Q

How much levonorgesterol is in the kyleena coil?

A

19.5mg

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36
Q

How long is the kyleena coil licensed for?

A

5 years

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37
Q

What is the downside to using kyleena instead of mirena?

A

Less chance of amenorrhoea

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38
Q

How effective is the COC?

A

> 99% if taken correctly

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39
Q

What are the risks of COC you must counsel women about before they start using it?

A

Small risk of blood clots
V. small risk of heart attacks and strokes
Increased risk of breast cancer and cervical cancer

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40
Q

What advice should you give re. using additional contraception when starting the COC?

A

If started within first 5 days of cycle - no need for additional contraception

If started after that - need alternative contraception for the first 7 days

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41
Q

At what time should you take the COC every day?

A

At the same time every day

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42
Q

How should the COC be taken?

A

Can be taken 21d on, 7d off or can tricycle or can take continuously

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43
Q

Is sex during the pill free period safe whilst on the COC?

A

Only if the next pack is started on time

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44
Q

When might efficacy of the COC be reduced?

A

If vomiting within 2h of taking pill
Medications that induce diarrhoea/vomiting
Medications that induce liver enzymes, e.g. rifampicin

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45
Q

What is a complete CI to the insertion of a copper coil?

A

PID

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46
Q

What are the two methods of emergency contraception available in the UK?

A

Emergency hormonal contraception

Cooper IUD

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47
Q

What are the two emergency hormonal contraceptives?

A

Levonorgestrel

Ulipristal

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48
Q

What kind of drug is ulipristal?

A

A progesterone receptor modulator

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49
Q

What is the mode of action of levonorgestrel?

A

Stops ovulation + inhibits implantation

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50
Q

When should levonorgestrel be taken?

A

ASAP - efficacy reduces with time

Must be taken within 72h of unprotected sex

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51
Q

What dose is given of levonorgestrel for emergency contraception?

A

1.5mg single dose

double dose if BMI >26 or wt >70kg

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52
Q

What are adverse effects of levonorgestrel?

A

(nb these aren’t v. common)

Vomiting, current menstrual cycle disturbance

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53
Q

If vomiting occurs within _____ hours of the dose of levonorgestrel, it should be taken again.

A

2

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54
Q

Which of the emergency hormonal contraceptives can be used more than once in a menstrual cycle?

A

Levonorgestrel

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55
Q

Can hormonal contraception be started immediately after using levonorgestrel for emergency contraception?

A

Yes

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56
Q

What is the market name for ulipristal?

A

EllaOne

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57
Q

What dose of ulipristal is taken as an emergency contraceptive?

A

30mg

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58
Q

When does ulipristal have to be taken by?

A

No later than 120h after intercourse

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59
Q

Can you use hormonal contraception straight after ulipristal?

A

No - restart 5d after having it as it can reduce the effectiveness of hormonal contraception

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60
Q

In pts with which condition should you exercise caution in prescribing ulipristal?

A

Severe asthma

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61
Q

Can ulipristal be prescribed more than once in 1 cycle?

A

Yes (previously thought no though)

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62
Q

For which of the emergency contraceptives should breastfeeding be delayed for 1w after its use?

A

Ulipristal

63
Q

When can a copper coil be used up till for emergency contraception?

A

5 days of UPSI or after 5d after the likely ovulation date

64
Q

How does the IUD work as emergency contraception?

A

Inhibits fertilisation/implantation

65
Q

What should you give to someone getting fitted with an IUD who may be at risk of an STI?

A

Prophylactic antibiotics

66
Q

How effective is the IUD as an emergency contraceptive?

A

99%

67
Q

Does the copper IUD have to stay in as a long term contraceptive if you get it put in as an emergency contraceptive?

A

No - but have to wait until next period for it to be removed

68
Q

How long can you miss your POP for before you have to take additional action to protect yourself?

A

Traditional POPs - 3h

Cerazette (desogrestrel) - 12h

69
Q

If you are more than 3h late for your traditional POP or more than 12h late for your cerazette pill what action must you take?

A

Take missed pill ASAP (if >1 pill missed, just take 1 pill), take the next pill at the usual time (which may mean taking 2 pills in 1 day)
Continue with rest of pack
Use condoms until pill taking has been reestablished for 48h

70
Q

What is the age of consent in the UK?

A

16

71
Q

Under what age is a child considered unable to consent to sex?

A

Under age 13

consultations regarding this age group should automatically trigger child protection measures

72
Q

What are the fraser gudielines?

A

Healthcare worker can provide advice + contraception if they feel a young person is competent + the young person:

  • understands the advice
  • cannot be persuaded to inform their parents
  • is likely to benign/continue having sex w or wo contraception
  • without receiving contraceptive treatment, their physical/mental health are likely to suffer
  • it is in the best interests of the young person with or without parental consent
73
Q

When should young people be advised to have STI test after UPSI?

A

2 weeks and 12 weeks after UPSI

74
Q

What is the long acting reversible contraceptive method of choice in young people (<20)?

A

Progesterone only implant (Nexplanon)

IUS/IUD are UKMEC 2 in this group, concerns about effects on BMD with depo-provera

75
Q

List the advantages of the COCP

A

Highly effective
Doesn’t interfere with sex
Contraceptive effects reversible upon stopping
Usually makes periods regular, lighter, less painful
Reduced risk of ovarian, endometrial cancer
Reduced risk of colorectal cancer
May protect against PID
May reduce ovarian cysts, benign breast disease, acne vulgaris

76
Q

List the disadvantages of the COCP

A

People may forget to take it
No protection against STIs
Increased risk of VTE, breast and cervical cancer, stroke, IHD
Temporary side effects: headache, nausea, breast tenderness

77
Q

What is the name of the combined contraceptive patch licensed in the UK?

A

Evra

78
Q

How do you wear the combined contraceptive patch throughout a 4 week cycle?

A

Wear for first 3 weeks (changing the patch every week)

4th week - do not wear patch and will have withdrawal bleed

79
Q

What should you do if there is a delay in changing your evra patch in the first 2 weeks?

A

Delay <48 - change patch immediately + no further action req.

Delay >48h - change patch immediately, use barrier contraception for 7 days (if UPSI in last 5 days consider emergency contraception)

80
Q

What should you do if you delay removing your evra patch at the end of the third week?

A

Remove patch asap and start new patch on usual cycle day even if withdrawal bleeding is still occuring

81
Q

What should you do if evra patch application is delayed at the end of a patch free week?

A

Use barrier contraception for 7d following any delay and start at the start of a new patch cycle

82
Q

The current law surrounding abortion is based on what act?

A

1967 Abortion Act

83
Q

What is the upper limit for having an abortion?

A

24 weeks

84
Q

Who must sign a legal document to allow an abortion to happen?

A

2 registered medical practitioners (1 in an emergency)

85
Q

Who can perform an abortion?

A

Only a registered medical practitioner (must be in NHS hospital/licensed premise)

86
Q

What does the method used to terminate a pregnancy depend on?

A

Gestation

87
Q

How do you terminate a pregnancy <9 weeks gestation?

A

Mifepristone (anti-progesterone)

Prostaglandins 48h later (to initiate uterine contractions)

88
Q

How do you terminate a pregnancy <13 weeks gestation?

A

Surgical dilation + suction of uterine contents

89
Q

How do you terminate a pregnancy >15 weeks gestation?

A

Surgical dilation + evacuation of uterine contents
OR
Late medical abortion (induces mini labour)

90
Q

What is one of the biggest risks following TOP?

A

Infection (10%)

91
Q

What may be given as a prophylactic antibiotic prior to termination of pregnancy?

A

Metronidazole

92
Q

What is the mode of action of the COCP?

A

Inhibits ovulation

93
Q

What is the mode of action of the POP (excluding desogestrel)?

A

Thickens cervical mucus

94
Q

What is the mode of action of the desogestrel only pill?

A

Primary - inhibits ovulation

Secondary - thickens cervical mucus

95
Q

What is the mode of action of the depo-provera?

A

Primary - inhibits ovulation

Also: thickens cervical mucus

96
Q

What is the mode of action of the implantable contraceptive?

A

Primary - inhibits ovulation

Also: thickens cervical mucus

97
Q

What substance is in the implantable contraceptive?

A

Etonogestrel

98
Q

What is the mode of action of the IUD?

A

Decreases sperm motility and survival

99
Q

What is the mode of action of the IUS?

A

Primary: prevents endometrial proliferation
Also: thickens cervical mucus

100
Q

What is the mode of action of levonorgestrel?

A

Inhibits ovulation

101
Q

What is the mode of action of ulipristal?

A

Inhibits ovulation

102
Q

What is the mode of action of the IUD as an emergency contraceptive?

A

Primary: toxic to sperm + ovum
Also: inhibits implantation

103
Q

How long can a urine pregnancy test remain positive for following a TOP?

A

Up to 4 weeks

+ve test beyond 4w indicates incomplete abortion/persistent trophoblast

104
Q

When can an IUD be inserted after pregnancy?

A

4 weeks post-partum

Can also be inserted at any time during the cycle or immediately after a first/second trimester abortion

105
Q

What is the most common adverse effect of the POP?

A

Irregular vaginal bleeding (40%)

106
Q

Up to what day on the cycle can you start taking the POP for immediate protection? If not started before this day how long should you use barrier methods for?

A

Up to and including day 5 of cycle

Use condoms for 2d if not started on or before day 5

107
Q

How would you switch from a COC to POP?

A

Continue directly from end of a pill packet (day 21) for continuous protection

108
Q

How would do you take the POP?

A

At same time every day with no pill free break

109
Q

If you have diarrhoea or vomiting how do you adjust taking the POP?

A

Keep taking the pills as normal but assume as missed pills and use condoms until 48h after vomiting/diarrhoea

110
Q

How do antibiotics affect the efficacy of the POP?

A

They don’t (unless antibiotic alters P450 system, e.g. rifampicin)

111
Q

What type of drugs may reduce the effectiveness of the POP?

A

Liver enzyme inducers

112
Q

What is the main injectable contraceptive used in the UK?

A

Depo provera

113
Q

What substance does depo provera contain?

A

150mg medroxyprogesterone acetate 150mg

114
Q

How is depo provera given?

A

IM injection every 3m

**NB can be given up to 14w past last dose without need for extra contraception

115
Q

How does depo provera work?

A

Inhibits ovulation

Also thickens cervical mucus and thins endometrial lining

116
Q

What are disadvantages of depo provera?

A

Delay in return to fertility up to 12m

117
Q

What are adverse effects of depo provera?

A

Irregular bleeding
Weight gain
Increased risk of osteoporosis (avoid in adolescents if possible)

118
Q

What is the safest form of contraception for someone with breast cancer/confirmed BRCA mutation?

A

Cu coil

119
Q

Give an example of a barrier method of contraception

A

Condoms

120
Q

What are the two daily forms of contraception?

A

COCP

POP

121
Q

What are the LARCs?

A

Implantable contraceptives
Injectable contraceptives
IUS
IUD

122
Q

How long does the implantable contraceptive last for?

A

3 years

123
Q

What was the old implantable contraceptive used?

A

Implanon

124
Q

What is the name of the new implantable contraceptive we use?

A

Nexplanon

125
Q

What are the differences between Nexplanon and Implanon?

A

New applicator prevents deep insertion

Radiopaque + easier to locate if impalpable

126
Q

Where are the implantable contraceptives inserted?

A

Proximal non-dominant arm subdermally(overlying the tricep)

127
Q

What is the most effective form of contraception?

A

Nexplanon

128
Q

When can nexplanon be inserted following a TOP?

A

Immediately

129
Q

On what day of the cycle does a nexplanon need to be inserted to offer immediate protection? If not inserted on or before this day then how long are condoms used for?

A

Day 1 - 5

7 days

130
Q

What is the main problem with nexplanon?

A

Irregular/heavy bleeding

Progesterone effects - headache, breast pain, nausea

131
Q

How can you combat irregular/heavy bleeding on the implant?

A

Co-prescribe COCP

132
Q

What must you do if heavy bleeding continues on the nexplanon?

A

STI check/speculum exam

133
Q

What kinds of drugs may reduce the efficacy of the nexplanon?

A

Enzyme inducing drugs, e.g. antiepileptics, rifampicin

use additional contraceptive until 28d after stopping treatment

134
Q

Give example of UKMEC3 conditions for nexplanon

A 
IHD/stroke 
Unexplained, suspicious vaginal bleeding
Past breast cancer
Severe liver cirrhosis
Liver cancer
135
Q

Give example of UKMEC4 conditions for nexplanon

A

Current breast cancer

136
Q

What advice should you give to all women on anti-epileptics about contraception?

A

Use condoms + other forms of contraception

137
Q

What are UKMEC 3, 2, and 1 for most anti-epileptics (phenytoin, carbmazepine, barbiturates, primidone, topiramate, oxcarbazepine)?

A

UKMEC 3: COCP, POP
UKMEC 2: implant
UKMEC 1: depo provera, IUD, IUS

138
Q

What are UKMEC 3 and 1 for lamotrigine?

A

UKMEC 3: COCP

UKMEC 1: POP, implant, depo-provera, IUD, IUS

139
Q

If a COCP is chosen for someone with epilepsy on anti-epileptics what should it contain?

A

Minimum 30micrograms of ethinylestradiol

140
Q

What is the preferred contraceptive method for someone on antiepileptics?

A

IUD

141
Q

What is the preferred emergency contraceptive method for someone on antiepileptics?

A

IUD

or
Double standard dose of levonorgestrel, avoid EllaOne

142
Q

What is the most common technique used to describe the efficacy of a contraceptive method?

A

Pearl Index

143
Q

What is the pearl index?

A

No. of pregnancies that would be seen in 100 women that used the contraceptive method for one year

144
Q

At what age does the COCP become UKMEC 2?

A

40+

145
Q

What what age does the depo provera become UKMEC 2?

A

> 45

146
Q

What kind of COCP may be more suitable for women >40?

A

A pill containing >30micrograms ethinylestradiol

147
Q

What might a COCP be useful for in women undergoing perimenopause?

A

Maintains BMD

Reduces menopausal symptoms

148
Q

When may women be advised to stop using contraception as they go through menopause if they are using non-hormonal methods (e.g. IUD, condoms)?

A

<50 - after 2 years of amenorrhoea

>50 - after 1 year of amenorrhoea

149
Q

Until what age can the COCP be continued until?

A

50

Thereafter use non-hormonal/progesterone only

150
Q

Until what age can the depo provera be continued until?

A

50

Thereafter use non-hormonal method + stop after 2 years of amenorrhoea OR switch to progesterone only method

151
Q

Until what age can the implant, POP, IUS be continued until?

A

Beyond 50

If amenorrhoeic check FSH + stop after 1y if FSH 30u/l or more or stop at 55

If not amenorrhoeic consider investigating abnormal bleeding pattern

152
Q

Can HRT protect against pregnancy?

A

NO
Can use POP but must also have progesterone component of HRT (as POP cannot be relied on to protect endometrium on its own, e.g. use IUS)

153
Q

The GMC states:
‘You should usually share information about abusive or seriously harmful sexual activity involving any child or young person, including that which involves:

A

young person too immature to understand/consent
big differences in age, maturity or power between sexual partners
a young persons sexual partner having a position of trust
force/threat of force, emotional/psychological pressure, bribery or payment, either to engage in sexual activity or to keep it secret
drugs or alcohol used to influence a young person to engage in sexual activity when they otherwise would not
a person known to the police or child protection agencies as having had abusive relationships with children or young people.’

Reproduction (28 decks)

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