Drugs and vaccines in pregnancy Flashcards

1
Q

what is a teratogen ?

A

is an agent that acts during fetal development to produce permanent alterations of form or function

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2
Q

at what time during pregnancy is it most common for fetal abnormalities to happen ?

A

1st trimester

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3
Q

what type of drugs are completely contraindicated in pregnancy ?

A
category X medications 
anticancer chemotherapy ( methotrexate)
immunosuppressants (mycophenolate)
radioactive chemicals ( iodine 131)
isoretinon
if really needed termination of pregnancy is indicated
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4
Q

what system is currently used to categorize drugs inn pregnancy ?

A

PLLR

Pregnancy and lactation labelling rule

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5
Q

what drugs are contraindicated during lactation ?

A

metronidazole
tetracycline
amiodarone
erotamine

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6
Q

what type of vaccines are contraindicated in pregnancy ?

A

live attenuated vaccines

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7
Q

what are examples of live attenuated vaccines ?

A

MMR
BCG
Varicella

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8
Q

for each pregnancy which vaccine is recommended and when ?

A

influenza shot is recommended at any time during the pregnancy
whooping cough TDaP vaccine is recommended in the 3rd trimester

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9
Q

which group of anti-hypertensive drug should be avoided in pregnancy ?

A

ACE inhibitors

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10
Q

are there any contraindicated vaccines during breastfeeding ?

A

no contraindications

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11
Q

what is analgesia ?

A

loss of pain without loss of motor function or consciousness

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12
Q

what are the causes of pain during the first stage of labour ?

A

stretch of the cervix during dilation

distention and ischaemia of uterine muscle with buildup of lactate

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13
Q

what are the causes of pain during the second stage of labour ?

A

stretch of the vagina and perineum

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14
Q

what is pain perception influenced by ?

A

expectations
age
preparation
emotional support

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15
Q

what narcotic/opioid is given before labour ?

A

Meperidine hydrochloride (pethidine)

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16
Q

what can be given alongside pethidine to improve its effect ?

A

an anti-emetic ( promethazine)

17
Q

what is the antidote to all narcotics ?

A

naloxone

18
Q

what indications involving time must be taken into consideration when administering pethidine ?

A

must be given only when delivery is expected to happen in more than 2 hours to avoid respiratory depression in the newborn

19
Q

what is the problem with the use of Nulufin as an opioid ?

A

no antidote

20
Q

what is the problem with using Morphine sulphate ?

A

higher association with respiratory depression

21
Q

what route of analgesia can be given after labour ?

A

PCA

22
Q

what does PCA consist of ?

A

a mixture of opioids, steroids, anti-emetics and PPIs

23
Q

what are the different types of local analgesia ?

A

local infiltration anesthesia
pudendal nerve block
paracervical block

24
Q

what is TAP block ?

A

transversus abdominal plane block ultrasound

25
Q

what level does TAP block ?

A

blocks T10,11,12 intercostal, subcostal nerves , illioinguinal and illohypogastric nerves

26
Q

what is TAP most effective in ?

A

post-operative pain

27
Q

what are the non-pharmacological methods of pain relief ?

A
TENS 
Acupuncture 
Stretching and manipulation
Cognitive behaviour therapy 
Warm water baths
28
Q

when is general anesthesia used ?

A

cesarian section
repair of 4th degree perineal tears
instrumental delivery
manual removal of the placenta

29
Q

what instructions should be given tot he patient before undergoing general anesthesia ?

A

fast for 6-8 hours

30
Q

what are examples of IV anesthetics and hypnotics that are used in general anesthesia ?

A

ketamine ( ketalar)
propofol (diprivan)
thiopental (intraval)

31
Q

what is the difference between epidural and spinal anesthesia ?

A

epidural is injected at the epidural space

spinal is injected in the subarachnoid space

32
Q

what is the problem with using epidural ?

A

can prevent straining (7az2)

33
Q

what kind of nerve block would be used during abortions ?

A

saddle block

34
Q

what is safer to use during CS general or spinal anesthesia ?

A

spinal anesthesia

35
Q

what is the preferred method of analgesia inn vaginal delivery ?

A

epidural analgesia

36
Q

what are the drug categories during pregnancy ?

A
category A - safe 
Category B - no evidence of risk k
Category C - risk cannot be ruled out 
Category D - positive evidence of risk 
Category X - contraindicated inn pregnancy