Asthma, COPD, Cystic Fibrosis, Allergies and anaphlyaxis, Croup, CF Flashcards

1
Q

what’s steps 1 - 5 in the asthma treatment pathway?

A
  1. intermittent reliever - SABA
  2. SABA + ICS
  3. LTRA (NICE) or LAMA (BTS/SGN)
  4. LABA if not already added - can be used with ot without LTRA. Convert fixed dose LABA + oderate ICS into MART
  5. Increase to high dose ICS or initiate
    - theophylline
    - tiotropium
    - oral corticosteroids
    - MAbs
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2
Q

what symptoms must a patient display for an ICS to be added into asthma regime?

A
  • needing SABA 3x a week
  • being symptomatic 3x a week
  • night waking 1x a week
  • using more than 1 inhaler a month
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3
Q

when can LABAs be given to children for management of aasthma?

A

in step 3 as per adult pathway but only for 12yrs+

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4
Q

whats the Clenil dose for children ?

A

50mcg 2PU BD

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5
Q

what age can tiotropium be used?

A

12yrs +

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6
Q

when is the course of action to take if child under 5 is using more than 1 inhaler a month?

A

urgent refferal

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7
Q

what is step 2 for children under 5 in the asthma pathway?

A
  • to start ICS if symptoms uncontrolled by SABA (symptoms 3x a week, night time waking x1 a week)
  • use a paediatric low dose for an 8 week trial
  • if ICS not tolerated use LTRA
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8
Q

when can you think about stepping down asthma treatment?

A

when asthma has been controlled for at least 3 months

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9
Q

how do you step down asthma treatment?

A
  • by maintaining patients are the lowest, effective ICS dose
  • reduce by 25 - 50% every 3 months
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10
Q

what defines complete control in asthma?

A
  • no daytime symptoms
  • no night time waking
  • no asthma attacks
  • no need for rescue medication
  • no limitations on activity including exercise
  • normal lung function (FEV1 and/or PEF >80% predicited or best)
  • minimal side effects from treatment
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11
Q

if someone with COPD has azithromycin prescribed as prophylaxis for the winter, what abx would you want to avoid using in thier rescue pack and why?

A

clarithromycin - becuase is another macrolide so use amoxicillin or doxycycline

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12
Q

what non-drug treatment can be used in COPD exacerbations?

A

positive expiratory pressure helps sputum clearance

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13
Q

what are the options for drug treatment in OCPD exacerbations in hosp and community?

A
  1. SAMA/SABA - withhold LAMA if SAMA given
  2. hospitalised - pred + other therapies (aminophylline, O2)
  3. community - only give pred if sevre breathlessness
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14
Q

why do you not give SAMA and LAMA at same time?

A

muscarininc SE be too much

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15
Q

how long do SABA work for? Name 2 examples

A

4 hours
salbutamol, terbutaline

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16
Q

how long do LABAs work for? Give 3 examples

A

salmeterol, vilanterol, formoterol

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17
Q

what are the cautions around SABAs/LABAs?

A
  • caution in diabetes, can cause DKA especially after IV
  • cause hypokalaemia, increase risk of QT prolongation, increased risk arrhythmias
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18
Q

alongside SABA/LABA what other drugs also increase risk of QT prolongation?

A

corticosteroids, diuretics, theophylline, citalopram, escitalopram

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19
Q

what interaction should you look out for with SABAs and LABAs (narrow TI drug)?

A

digoxin - increased risk of digoxin toicity due to hypokalaemia

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20
Q

what are the muscarininc side effects?

A

constipation, dry mouth, dry eye, increased ocular pressure (report halos or blurred vision)

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21
Q

name 5 ICS
what one is given OD?
how many times are the others given?

A

beclometasone, budesonisde, ciclesonide, fluticasone, mometasone
all BD except ciclesonide which is OD

22
Q

what ICS must be prescribed by brand and why?

A

Qvar and Kalhale - this is bcause these have extra fine particles so 2x strogner than other inhalers such as clenil

23
Q

what monitoring in children is needed if on prolonged ICS?

A

height and weight as can stunt growth - refer to paediatrician if stunted growth suspected

24
Q

what are the SE of ICS?

A
  1. taste and voice aleration
  2. sore mouth - oral thrush
  3. paradoxical bronchospasam
25
do you manage paradoxical bronchspasams ith ICS?
- if mild: use SABA before hand to prevent it happening - change from an aerosol to DPI
26
what are the side effects and MHRA warnign with montelukast?
MHRA warning = risk of neuropsychaitric reactions - seek medical attention if speech and behavioural changes occur Churg- Strauss syndrome - eosinophillia, vasculitc rash, worsening pulmonary symptoms, cardiac complications, perihperal neuropathy
27
what are the main interactions with LTRA?
CYP450 enzyme substrate - thi means inducers will redcue the conc of montelukast and inhibitors will increase its conc
28
whats the therapeutic range for theophylline? what is this the same as?
10 - 20mg/l same as phenytoin
29
when should you moniotr theophylline levels?
- 4 - 6 hours after a dose - 5 days after starting treatment - at least 3 days after dose adjustment (increaing dose)
30
do you need to prescribe by brand of theophylline?
yes - brands not bioequivelant
31
what are the main SE of theophylline?
vomitting, tremour, palpitation, arrhythmias
32
what are the interactions to look out for with theophylline? what drugs increase and decrease the levels?
increased by: macrolides, cimetidine, ciprofloxacin (CYP inhibitors) decreaed by: carbamazepine and st johns wort (CY{ inducers) - drugs that cause hypokalaemia
33
what are signs of theophylline overdose? (Theophylline helps astronauts hide venus) SICK AND FAST
tachycardia hyperglycaemia agitation haematemesis vomiting
34
what does stopping/starting smoking do to theophylline levels?
start = dose increases as smoking reduces clearance stop smoking = dose decreases as cleared quicker
35
how does having a fever affect theophylline?
reduces the clearane of theophylline so may need dose reduced
36
whats the treatment for croup? what setting is this often done in?
dexamethasone usually community
37
whats the management for severe croup? what if pt can't take oral steroids? what is steroids don't work?
- hospital admission - single dose of dexamethasone or pred given orally whilst awaitng admission - if cant take oral = IM dexamethasone or nebulised budesonside - uncontrolled by steriod = nedulised adrenaline
38
what antihistamine has undergone POM - P switch?
fexofenadine 120mg
39
what antihistamines are aslo used as antiemetics?
cinnarizine, cyclizine, promethazine
40
what antihistamine can be used for migraines?
buclizine
41
what antihistamines can be used for insomnia?
1st generation (allmemazine?, promethazine) diphenhydramine
42
whats Omalizumab and when is it used? what are the main SE's? (also seen with LTRA)
monoclonal that binds to IgE for severe perissitent allergic asthma that cannot be controlled with ICS + LABA SE = churg-strauss syndrome and hypersenstivity reactions
43
what do vaccines contain that reduce the risk of severe anaphylaxis?
beewasp venom
44
what is the managemt for anaphylaxis?
1. use auto injection immediately (IM adrenaline) 2. call 999 and state anaphylaxis - administer CPR if needed 3. lie down and raise patients legs 4. remove the trigger causing anaphlyactic reaction if possible 5. repeat after 5min interval if no improvement
45
why do you raise the legs in anaphylaxis?
prevent hypovolaemic shock
46
how is anaphylaxis managed in hospital?
- high flow O2 - IV fluids to manage hypotension/hypovolaemic shock - following sedation of patinet, a non-sedating antihistamine (ceterizine - IM/IV chlorphenamine in NBM) - inhaled bronchodilator with salbutamol and/or ipratropium if problems persist
47
how many autoinjectors should be carried at all times?
2
48
whats the adrenaline dose for the following ages: - child up to 6months - 6months - 5yrs - 6yrs - 11yrs - 12yrs+
- up to 6months = 100 - 150mcg - 6m - 5yrs = 150mcg - 6 - 11yrs = 300mcg - 12yrs + = 500mcg
49
what is cystic fibrosis?
genetic disorder affecting the lungs, pancrease, liver, intestine and reproductive organs - viscous sputum, chest infections, malaborption
50
what is the mucolytic used in CF?
dornase alfa
51
what bacteria are you trying to supress with long term antibacterial therapy in CF?
S. Aureus
52
what shoudl you monitor CF patients for?
bone density liver disease diabetes