PSA Flashcards
Enzyme inducers
CRAP GPS !!!!!Sulphonylureas (gliclazide) Carbemazepine Rifmapicin Alcohol (chronic) Phenytoin !!!!!!Griseoflulvin !!!!Phenobarbitone St johns Wort
also tobacco, topiramate
Enzyme inhibitors
Some Certain Silly Damn Compounds Annoyingly Inihbit Enzymes Grrr Mother (fucker)
Sodium Valproate Cipro !!!Sulphonamide- sulfalazine, SSRIs!!! Diltiazem, disulfiram Cimetidine/omeprazole Antifungals, amiodraone, alcohol (acute) Isoniazid Erythromycin/clarithro Grapefruit juice Metronidazole
- chloramphenicol
- allopurinol
Drugs to stop before operation
I LACK OP
- Insulin (put on sliding scale)- stop on day
- Lithium- 1 day before
- Anticoag/antiplts (1 week, warfarin 5 days, NSAIDs 1 day)
- COCP
- K-sparing diuretic
- Oral hypoglycaemic- stop for NBM period, metformin- 24 hour prior
- Perinidopril (or any ACEI, ARB)- ~1 day
rule for people on LT steroids and ill/having op
- douuble dose to prevent addisonian crisis
Drugs causing hyperkalaemia
THANKS Cycle - Trimthoprim - Heparin - ACEI/ARBs - NSAIDs - K sparing - Suxamethonium C- cyclosporin!!
drugs causing hypokaelamaemia
BAD FIT
- beta 2 agonists
- Amphotericin B
- DIgoxin
- Furosemide
- Insulin
- Thiazide
drusg causing hypernatraemia
SO SAD
- Sodium chloride/bicarb
- Oestrogen
- Steroids
- Androgens
- Diuretics
Drugs causing hyponatraemia
ABCDEFGH - ACEI/Antids- SSRI/ antipsych (- Brivaracetam, betablockers !!!! - Carbamazepine - Desmopressin/Diuretics - Ethosuximide - Furosemide !!!!- Gliclazide - Heparin
PPIs
Nephrotoxic drugs
DAMN Diuretic ACEi/ARBs/Abx (gent, nitrofurantoin, vanc) Metformin NSAIDs
drugs causing lung fibrosis
BANS Me
- Bleomycin
- Amiodarone
- Nitrofurantoin
- Sulfalazine
- Methotrexate
drugs causing retention
NO PEE NO ABC N- NSAID O- opioids A- Amitriptyline/anticholinergics B- benzos !!!!! C- CCBS
drugs exacerbating HF
VISA
- Verapamil and other CCBs
- Ibuprofen!
- Steroids!
- Antiarrhtymics– flecainide\
Drugs triggering epilepsy
MAMA
- Methylphenidate (ADHD)
- Alcohol, amphetamine
- Mefenamic acid
- Aminophylline, theophylline
- cipro, levofloxacin- fluoroquinolones
- bupropion
- inducers
when withdrawn- benzos, baclofen, hydoxyzine
inducers/inhibitors
How long should you assume a course of abx is for / for review if it isnt stated in the BNF
PO- 5 days
IV- 3 days
what is the maximum dose for paracetemol
500mg up to 4 hourly
1g up to 6 hourly
max 4g per day
dont put PRN- put max dose up to
how big increments should levothyroxine dosages be increase/decreased by
25-50mcg
what drugs most commonly cause bronchospasm and should not be px in asthmatics
- NSAIDs
- Beta blockers
- Ispaghula Husk
- adenosine
Immediate management of acute asthma attack
OSHITME O2 Salbutamol Hydrocortisone IV/ pred PO Ipratropium Theophylline:aminophylline infusion Mg Sulfate Escalate
NB- give SABA before SAMA as SAMA needs longer to work
monitor sats for therapeutic effect- serum conc does not indicate clinical efficacy
Life threatening asthma?
33, 92, CHEST
<33%- PEFR <92%- Sats Cyanosis Hypotension Exhaustion- pCO2 is higher end of normal- beginning to tire Silent chest Tachycardia
Severe, mod and mild asthma attack?
Severe: PEFR 33-50%, cant complete sentences >=25 RR, >110 HR
Mild: 50-75% PEFR
Mild >75% PEFR
LT tx asthma
- SABA/SAMA
- +ICS (beclo, pred)
- Montelukast (LTRA)
- LABA (often combined with ICS in MART)(salmeterol/formeterol) +- LTRA
- high dose ICS, LAMA (tio), theophyline
tx of cough being going on for 10d, non productive, pt well in self, no PMHx
SABA- likley viral, can give SABA to relieve sx of cough >10d
LT management of COPD
- SABA/SAMA
- LABA or LAMA
- ICS
- azithromycin prophylactically
discontinue SAMA if LAMA added
Management of COPD exacerbation
- SABA+SAMA Nebs
- pred PO short course
- Aminophylline add on
ITU transfer and CPAP
abx- doxy/co-amox/clarithro
24%/28% venturi until ABG done/high pCO2 (retainer)
most important info to tell person starting ACEI
- come back in 1-2w for renal tests
what do you in person being tx for pneumonia monitor to assess response to abx
RR
Consolidation on CXR and creps on ausculation take longer to clear up (weeks)
Tx severe and moderate Croup
Severe
- neb budesonide (when no access)
- IV dex once access
- Neb adrenaline and corticosteroids
Moderate- oral dexa/pred
targets for HTN
140/90 (135/85 home)
if above of equal to 80y/o–> 150/90 (145/85 home)
when do you tx stage 1 HTN
- if home testing >135/85
- <80 and other RFs incl diabetes, renal disease, target organ damage, CVD, elevated CV risk (>10%)
- otherwise give lifestyle advice
stages of HTN
140/90 , 135/85- 1
160/100-180/120, home 150/95- 2
>180 or >120– severe
management of severe HTN
same day specialist referral
HTN tx
<55 and white
- ACEI/ARB
- CCB
- Thiazide like
- spironolactone if K =<4.5
- alpha blocker, beta blocker if K >4.5
Afro carribbean/ >55yo
- CCB
- ACEI/ARB
- Thiazide like
- spironolactone if K =<4.5
- alpha blocker, beta blocker if K >4.5
Sx of Pheochromocytoma
- postural hypotension
- palpitations
- abdo pain
- tx resistant severe HTN
- heat intolerance/sweating/flushing
- nausea
- feelings of apprehension
Ix ?pehochromocytoma
- urinary free catecholamines (adrenaline, norad, dopamines)
what drug do you use to tx HTN in pehochromocytoma pre-surgery?
non selective alpha blocker- phenoxybenzemine
- betablocker
tx MI
MONA
- Morphine
- O2- not if sats ok
- Glyceryl trinitrate or IV nitrogycerine (pain)- not isosorbide as this is slower acting
- Aspirin 300mg
+ antiemetics if feeling nauseous
BASH- secondary prev
- Beta blocker
- ACEI
- Statin- (atorvostatin dose is 80mg after MI rather than 40mg)
- Heparin
- Dual antiplt (asp, clopi/ticagrelor)
Tx acute HF/fluid overload- crackles, high JVP, SOB
ventilation
Furesomide IV (bolus or infusion)
Fluid restrict
daily weights and UE
once stabilised:
- betablockers if HFREF and no bradycardia/heart block- prognosis
- ACEI/ARB- sx
- aldosterone antagonist if HFREF- prognosis
LT management of HF with reduced ejeciton fraction
- betablocker, ACEI/ARB - reduce mort/morb
- furosemide /bumetanide- sx relief
Spironolactone
amiodarone, digoxin, ivabradine- specialist
name 2 alpha blockers
doxazosin
terazosin
name 3 CCBs
nifedipine
felodipine
amlodipine
name 2 thiazide like diuretics
- bendroflumethiazide
- indapamide
name 3 K sparing diuretics
spironolactone
eplerenone
amiloride
tx of acute pulmonary oedema
acute SOB
- furesomide 80mg IV stat
- bumetanide if HF fluid overload resistant to furesomide
tx of acute presentation of AF
Not stable
- emergency electrical cardioversion
Stable
- Pharmac carvdioversion- flecainide, amiodarone
- Rate control- betablocker IV, verapamil IV
avoid verapamil in HF
avoid betablocker in asthma
a 80 year oldspatient presents with palpitations and SOB, he says this started 3 days ago. His ECG shows AF- how would you manage?
> 48hours since sx onset AND pt is elderly- both contraindications to cardioversion– avoid amiodarone and flecainide
rate control only- betablocker/verapamil
would only rhythm control/cardiovert if have been on anticoag for 4-6w beforehand
tx of paroxysmal AF
symptomatic
- beta-blcoker, sotalol or diltiazem
- flecainide, amiodarone, dronedarone, propafenone
- digoxin monotherapy
pill in pocket- flecaindie, propafenone
ablation (LA)
non acute presentaiotn of AF- LT management
1st line- beta blocker, diltiazem, or verapamil (rate)
consider digoxin as monotherpay if above fails
who do you not give diltiazem/verapamil to?
CCBs
HF
fluid overload
general dosing rule when starting a px in PSA
- start at the lower end of the range
general rule for PSA when selecting options concerning dose increase/decrease
- chose smallest increment, unless theres signs of toxicity
Medical pt DVT/PE prophylaxis
- LMWH, fondaparinux
renally impaired- ‘use of unfractionated heparin may be preferable’– dalteparin monograph- despite BNF tx summary for vte saying either use is good– use heparin in renally impaired!
prophylaxis of DVT/VTE in surgical pt
different for eacho kind of suregry- CHEKC TX SUMMARY
tx of DVT/VTE
- apixaban/rivaroxaban
- LMWH then dabigatran
- LMWH with warfarin
NB- dose adjust LMWH for low eGFR and adults <50kg!!!!
what colour ewarfarin pills mean waht doses
White 0.5mg
Brown 1mg
Blue 3mg
Pink 5mg
how long does warfarin take to become fully effective
3 days
what condition can effect warfarin effect
hyperthyroidism
- increase warfarin coag effects
- smaller doses
Hypothyroid and those given carbimazole
- loss of coag effect
- increase doses
CI warfarin
- haemorrhagic stroke
- clinically sig bleed
- pregnancy (1st and 3rd trimester)
- within 72hour of major surgery
- concomittant tx where interactions increase bleed risk
- within 48hours postpartum
if a q is – a pt taking warfarin starts taking an inducer/inhibitor and their INR decreases/increases- what drug do you chose when asks which drug contributed to the INR
the inducer/inhibit (not warfarin
instructions taking rivaroxaban
with food
Mr Smith comes wants to discuss a stroke he had 1 week ago and his lasting symptoms. You notice he is still taking warfarin- what’s wrong w this?
shouldnt take anticoags until 2 weeks post isch stroke
what is the reversal agent of dabigatran
idarucizumab
who is dabigatran good for
those who have had heparin induced thrombocytopenia
Direct Xa inhibitors
Rivaroxiban, apixaban, edoxaban
reverseal agent fro direct Xa inhibitors
Andexanet
what is an indirect Xa inhibitor
fondaparinux
what do you monitor in fondaparinux tx
antifactor Xa
what do you monitor and how do you reverse heparin
APPT
protamine
how do you monitor LMWH and how do you reverse
Antifactor Xa
protamine
why would you give a lower dose of rivaroxaban
> 80yo
<60kg
<30 Cr clearance
warfarin reversal according to INR and bleeding status
- only give vit K if bleeding or INR >8
- Bleeding- IV vit K.
- > 8 no bleeding- Oral vit K.
_________________
3-5, no bleeding- stop for 1-2days and recheck in 1w
5-8 and no bleeding- withhold 1 or 2 doses, reduce subsequent maintenance dose
> 5 + bleeding (minor, major)- reverse with phytomenadione IV!
> 8 and no bleeding- stop warfarin and give phytomenadione ORAL!
Major bleeding of any kind
- stop warfarin, give phytomenadione IV
- give prothrombin (2,7,9,10)
- FFP
NB- different dosages of phytomenadione concerning minor and major bleeding
what common drugs do you withhold in a pt with low Hb
NSAIDs, aspirin
how long does it take for aspirin to wear off
7 days
aspirin SE
dyspepsia
v. rarely worsen asthma
ok on kidneys
when should you stop clopi pre op
1 week
when should you stop warfarin pre-op
5 days
what common drug interacts with clop to increase risk of bleeding
omezoprazole
what drug increases risk of bleeding when px with an NSAID or dabigatran
citalopram
name some 1st gen atnipsychotics
haloperidol
chlorpromazine
name seom 2nd gen antipsychotics
olanzapine
repisirdone
quetiapine
what is the atypical atypical antipsychotic
clozapine
what SEs do atypical antipsychotics tend to cause
Metabolic
- Wt gain
- hyperprolactinaemia
- hyperlpidaemia
- hyperglycaemia, diabetes
- HTN
QT prolongation
when do you medicate depression
- mod-severe
- persisted for 2y
- persisted despite other interventions
Serotinergic medications- name them
- Tramadol
- Codeine
- TCA
- SSRIs
- amphetamines
what dangers are there of seritonergic medications
- lower seizure threshold
- hyponatraemia
Serotonin syndrome
- tremor
- hyperreflexia
- rigid
- ocular clonus
- altered mental state
- autonomiic- hyperthermia, tachy, HTN, flushed, diaphoresis,
tx of serotonin syndrome
- cyproheptadine
- benzo for agitation
tx alcohol withdrawal
chlordiazepoxide
Tx of the different dementias
Alzheimer’s
- galantamine/donepezil/rivastigmine
- THEN memantine
Parkinsons
- donepezil, rivastigmine, galantamine
- memantine
Lewy Body
- Donepezil or rivastigmine
- galantamine
- memantine
Vasc Dementia
- Antiplt and HTN control
- only give other drugs if mixed
Frontotemporal ro MS
- DO NOT give ACHesterase inhibis or memantine
tx parkinsons
- co-careldopa
- Non ergot DA agonist- apomorphine, pramipexole, rotigotine
or
MAOB inhibi- rasagiline
if motor SE/fluctuations develop
- off above tx plus
- COMT inhibitors (antacapone)
only consider ergot- derived DA agonists- bromociptine, cabergoline– if on-ergots have not helped
SE parksinsons meds
chorea
postural hypotension
hallucinations, impulse control issues
CI parkinsons meds
- psychosis
- Neuroleptic malignant syndrome
- rhabdomyolysis
- dyskinesias, dystonia
what class of drugs interact with parkinsons meds
antipsychotics
tx SAH
- Nimodipine
2. Mannitol
What drugs can cause confusion in the elderly
- Prochloperazine (sedation)
- Anticholinergics, antihistamines
- Sulphonylureas- gliclazide, glibenclamide
- beta blockers
- **- Steroids (pred)
Sedatives:
- hypnotics/anxio- lorazepam, benzos
- opioids
- TCAs
- sedatvie antihistamines (all except cetrizine, acrivastine, fexofenadine, loratadine)
What drugs can cause falls in elderly
!!!! - alpha blockers (doxasosin, tamsulosin) - AntiHTN - beta blockers !!!! - antidepressants - hypnotics, benzos !!!! - nitrates
what can cause hypothermia in the elderly
- sedatives- benzos, TCA, opioids, chlopromazine
- decrease mobility- antipsychotics, antiparkinsons drugs, hypnotics
- vasodilation- CCBs- amlodipine– flushing, oedema
what causes resp depression
opioids
benzos- avoid diazepam
what drugs do you pre-preemptively prescribe
- Morphine , diamorphine , Oxycodone in renal impairment
- Haloperidol, cyclizine (antiemetic)
- Hyoscine butyl/hydrobromide , glycopyrronium (secretions)
- Midazolam, diazepam, lorazepam (sedation)
- Haloperidol- restlessness
- hiccup- metoclopramide, baclofen, nifedipine
Contraindications for px hyoscine hydro/butylbromide, glycopyrronium
Antimuscarinic (anti-motility action on gut):
- paralytic ileus
- symptomatic reflux
difference between hyoscine butylbromide and hydrobromide
Butyl
- does NOT cross BBB
- less drowsiness and central antiemetic action
Hydro
- does cross BBB
- drowsiness
What drugs are dangerous in pregnancy
SAFE Mums Take Really Good Care
Sulphonamides (sulfasalzine, trimeth), Sodium Valproate
Aminoglycosides (gent, streptomycin)
Fluoroquinolones and quinolones (cipro, levo, oflo)
sEnna (avoid near full term)
Metronidazole, methotrexate Tetracycline (doxy), topiramate, TIOTROPIUM Ribavirin, retinoids (even TOP) Griseofluvin Chloramphenicol
Also:
- high dose vit A
- thalidomide
- warfarin
- antidiabeteics instead of metformin and insulin
- antiHTNs except labetalol, nifedipine, methyldopa
vte prophylaxis in preg
LMWH
tx VTE in pregnancy
apixaban/rivaroxaban
or
LMWH with dabigatran after
high BP tx pregnancy
- labetalol
- Nifedipine
- Methyldopa
IV Mg sulphate if severe
switch all pre-existing antiHTNs to the above fi women want to become/have become
tx pregnancy HTN emergency
IV Mg sulphate- give 1st if headache/flashign lights present
oral/IV labetalol
Oral nifedipine
IV hydralazine
tx of hyperglycaemia in preg/gestational diabetes (starting after 24/40)
- change diet and exercise for 1-2w
Then after 2w:
- Metformin
- +-Insulin
what should pregnant diabetic women be px (other than antidiabetic meds)?
folic acid- high risk for neural tube defects
how to prevent focal seizures in pregnant pt eg cerebral tumour
- Lamotrigine (and carbamazepine)
which is also 1st line for non-pregnant people
Contraindications for COCP
- vasc disease
- Hx of IHD/stroke
- major surgery with prologned immbolisation
- known thrombotic mutations
- AF
- BMI >35
- Age !!>35!!
- smoker >15 cigs
- Migraine with aura
- Fam hx of VTE in 1st degree relative aged !!<45!!
- personal hx VTE
procedure fro missed COCP pills
- ‘missed’- taken >24 hours apart
- take missed as soon as rememebr and then resume normal taking
- may mean taking 2 together
- no additional precuations needed
2 missed pills
- take most recent missed asap, may mean take 2 together
- abstain from sex/take barrier methods for 7 days
- if next 7 days run into free pill time- start next pack without pill free time
- emergency contraception if have had sex
COCP monitoring
wt and BP only
when may you need to px a different dose of levonorgestrel for emergency contraception
- double it when an inducer is being taken
Levonorgestrel missed pill procedure
- 3 or 12 horu window
- take asap
- use protection for 2 days
- emergency contraception may be needed
what is a non hormonal drug that can be used to px sx of menopause
clonidine
if the person has a uterus, what kind of HRT should be used
Combined- as unopposed oestrogen–> endometrial cancer
eg yasmin
name some oestrogen only brands
elleste-solo
evorel
what type of HRT do you use in a person still with periods
Also good for menopausal sx
Cyclical- elleste duet
Evorel sequi
what type of HRT do you use in a person who no longer has periods?
Continuous
> 50yo >1yr
<50 >2yrs
How do you step up steroid creams in eczema
Help Every Bloody Dermatologist
Hydrocortisone
Emumovate (clobestasone)
Betnovate (betamethasone 1%)
Dermovate (clobestasol propionate)
NB - aq cream not recommended generally - reaction risk
what is used in severe eczema flares in children (TOP)
tacrolimus
pimecrolimus
Antiemetics
1, cyclizine (not in cardiac cases- use metoclop)
serotonin antags- ondansetron
histamine antags- promethazine, cyclizine
DA antag- domperidone, metoclop
N+V from migraine- prochloperzine, metoclop (oral or injection if vomiting)
when is metoclop CIed
- Parkinsons- use domperidone
- young women- increase risk of dyskinesia
- Obstruction- prokinetic and risks of perf
- caution in older adults
Constipation
1, Bulk forming
- ispaghula husk
- good for ST consti and hard stools
- avoid if already have sx (takes time to work)
- avoid in in asthmatics (bronchospasm)
- also 1st line in fissures and haemorrhois
- Stimulant
- bisacodyl, Na picosulfate, senna - avoid in preg
- good for soft stool
- 1st line in opioid/post op consti
- CI- colitis, cramps
3, Faecal softener
- Docusate, glycerol
4 Osmotic
- lactulose, macrogol (movicol)
- good for hard stools
- CI= bloating
- Avoid in IBS!
- 2nd line in fissures
- 1st line in faecal impaction (high dose)
- Ph enemas
How do you manage post op/opioid constipation
- avoid bulk forming
- use stimulant eg senna/biscodyl
How to manage person who is faecally impacted but passing no stools (faceal loading on AXR or hard stool fel in rectum)– laxative wise
- osmotic- high dose movicol
THEN - other laxatives
- phos enema
how to tx constipation with acute fissure
- Isapghula husk (bulk)
- Lactulose (osmotic)
glyceryl trinitrate ointment
topical lidocaine
paracetemol/NSAID
tx haemorrhoids
- avoid opioids (constipation)
- bulk forming- isphaghula husk
- topical - lidocaine, cinchocaine
- topical steroid based ointments- anusol
tx diarrhoea
loperamide
tx Acute pancreatitis
O2, analgesia, IV fluids
analgesia
IV abx for infected pancreatic necrosis and/or assoc cholangitis–
- cipro, penicillin, ceftriaxone, metronidazole
tx chronic pancreatitis
- Ceon (lipase, protease, amylase)
- analgesia incl. gabapentin, amitriptyline
- steroids if autoimmune
when do you tx diabetes
- immediately if any evidence of organ damage (vision blurring, renal failure, vasc disease)
- if no sx/mild- could repeat GTT and hba1c
monitoring of diabetes
hba1c 3-6 monthly until stable, then every 6m
foot, eye, U&E annually
diabetes diagnostic criteria
48mmol/L hba1c
11.1 random, 7 fasting
tx pf T2DM
- metformin - monitor UEs
- DPP4s- -gliptins
- pioglitazone
- sulphonylureas eg gliclazide
- SGLT-2 inhibits -gliflozin
- glucagon like peptide 1 rec agonists -tide
- insulin
CI and SE metformin
<30 eGFR / Cr >150/Ur
risk of lactic acidosis
SE
- Lactic acidosis
- kidney dysfunction
- GI
- anorexia
- B12 absorption reduction
SE pioglitazone
wt gain
bladder cancer
!!!!# risk
!!!!visual impairment (retinal ischaemia, macular oedema)
SE sulphonylureas
gliclazide
- hypoglycaemia
- hyponatraemia
- wt gain and hunger
- GI issues
SE SGLT-2 inhibitors
Gliflozin
- wt loss
- Fournier’s gangrene!! (penis)
targets for BM for diabetics
AM/before meals
- 4-7mmol/L
After meals/PM
- 9mmol/L (1.5hr after meal)
if not hitting AM tagrt change PM insulin dose and vice versa
how much do you change insulin dose by if someone dosent hit their BM target
10% (up or down)
how do you manage a conscious and stable pt who has a low BM
- 20g glucogel, long acting CHO when glucose >4mmol/L- biscuits, milk- aviod fake milk and chocolate
- fruit juice, sugary snack
How do you manage an unconscious/drowsy pt with a low BM
SC or IM glucagon 1mg stat, wiat 10 mins, then…
- glucose 10%100-200ml (10-20g) or 20% 50-100ml (10-20g)
- 50% not recommended
- if the pt already has IV access, go straight for IV
- Long acting CHO as soon as pt recovered and blood conc is >4mmol/L
What do you do with a diabetic’s insulin regime during the tx of a hypo
- do not omit insulin, but the tx regime does need review
- if the pt is unconscious- stop any insulin infusions and restart it when gluc >3.5mmol/L, concurrent glucose 10% infusion should be sconsidered
advice for diabetics on insulin for driving
- carry out BMs 2 hours before drivign and every 2 hours during jounreys
- should always be >5mmol/L when driving
when do diabetics need to inform the DVLA of their condition?
- when they are taking antidiabetic medication
- no need to if managed by lifestyle only
How do you manage a pt’s diabteic meds who is trying to cnoceive?
- stop all antidiabetic meds
- switch them to 1. insulin 2. metformin
- px folic acid as high risk of neural tube defects
what medication risks hyperglycaemia in diabetic patients, and if going on it, the pt must be informed of the risk and how they may want to adjust their meds
steroids
Tx of DKA
- Fluids
- Insulin
- K
- glucose 10% once BM <14
Fluids given to an adults in DKA
Shocked (systolic <90)
- 500ml NaCl over 15min
- give another if systolic remains <100
Not Shocked (systolic >90)
- 1L NaCl over an hour
- then 250ml/hour until euvolaemic
Insulin regime given to adult in DKA
Bolus
- 50units actrapid in 50ml of NaCl (1u/mL)
Infusion
- 0.1u/kg/hour
- fall in glucose should not exceed 5mm/hour
Potassium regime given to adult in DKA
Start once K is normal
- rate should not exceed 10mmol/hour (or 20mmol/hour in severe cases)
when should glucose be given in DKA
10%
- once BM is <14
What fluids are given to paediatric cases of DKA
Shocked
- 20ml/kg bolus over 15min
- if still shocked, give 10ml/kg
- up to 40ml/kg
- then give inotropes
Deficit (48hours)
- %dehydration x Kg x 10
Maintenance (24hours)
- 100ml/kg/day 1st 10kg
- 50ml/kg/day 2nd 10kg
- 20ml/kg/day rest of wt
- up to 80kg
Hourly rate= (deficit/48) + maintenance per hour
what insulin regime do you give to a paediatric pt in DKA
Bolus- 50u in 50ml NaCl
- infusion 0.1u/kg/hour in NaCl 0.9%
(same as in adult)
K regime given to paediatric case of DKA
- ensure every 500ml bag of NaCl contains 20mmol of K (40mmol/L)
- rate does nto exceed 10mmol/hour
what do you do with a diabetics normal insulin regime during the tx of a DKA
- carry on basal doses and give when due
- stop short acting doses
- stop insulin driver (short acting)
When and how do you stop an insulin infusion after a DKA
- once pH is normal and blood ketones <1 or 0.3mmol/L
- pt is eating and drinking
- only take off !!!!1 hour !!! after having a meal
- give first SC usually regime and bolus at least 30mins before the insulin is stopped, 60mins for insulin pump
How do you tx rhabdomyolysis
- Na bicarbonate to alkalise the urine and reduce myoglobin in renal tubules
- stop any statins
- IV fluids
- dialysis
what do you tx paracetemol poisoning with
- acetylcysteine
what do you dilute acetylcysteine in
- glucose 5% or NaCl 0.9%
what should amiodarone be diluted in
5% glucose
incompatible with NaCl!!!
how many infusions are needed of acetylcysteine
3
how do you tx paracetemol overdose ingested within 1 hour
activated charcoal
aspirin overdose- signs on investigation
- metabolic acidosis
- hypokalaemia
- high salicylate level
hwo do you tx aspirin overdose
- activated charcoal if within 1 hour
- correct the hypokalaemia
- Na bicarb IV to tx acidosis
Side effects of Lithium
LITHIUMS Leukocytosis !!!! Insipidus Tremors (Coarse overdoxse, fine SE) Hypothyroidism Increased wt !!!! Upset stomach- vomiting !!! Muscle weakness; Movement- hypereflexia, seizures, ataxia, dystonia; !!!Metallic taste !!!Skin conditions (acne, exacerbates psoriasis)
sx of lithium toxicity
Tremor (coarse), seizures D+N+V Anorexia disorientation/confusion blurred vision Lethargy, drowsiness, coma renal failure arrhythmia may look like cerebellar signs
management of Lithium toxicity
withhold Li
increase fluid intake
withhold diuretics
may need haemodialysis
What states can increase risk of Lithium toxicity
hyponatraemia
dehydration
renal function detioration
*****ACEI, diuretics (particularly thiazides), NSAIDs- stop these in toxicity
sx and signs of digoxin toxicity
sx
- Anorexia, N+V, diarrhoea
- malaise, weakness
- palpitations, syncope
- hallucination, blurred vision, xanthopsia (loss of colour vision)
- Neurotoxicity
signs
- arrhythmias (any), bradycardia
- hypotension
what drugs interact with digoxin
Diuretics
- thiazide like diuretics
- spironolactone
CCBs
- verapamil
Inhibitors- PPIs
- atorvostatin
- amiodarone
- ciclosporin
What conditions predispose to digoxin toxicity
hypokalaemia, hypomagnesia, hypercalcaemia alkalosis hypoxia infection renal dysfunction hypothyroidism
tx digoxin toxicity
- stop digoxin
- measure plasma conc immediately if sx severe, 6 hours post dose ideally
- UE, K, HR, BP, cardiac rhythm
- stop any other drug that may be affecting electrolyte imbalance
- DIGIBAND- antibody fragment specific to digoxin
what must you check before starting IV vanc
UEs
what may the rapid infusion of vancomycin result in
must be infused over at least 1 hour, otherwise:
- cardiogenic shock
- cardiac arrest
- anaphylaxis
- red man syndrome- histamine release, within first few mins of starting the infusion
toxicity sx of vancomycin
- ototoxicity
- neutropenia
- red man syndrome
- renal dysfunction, nephrotoxic
- TEN, SJS
- phlebitis
- N+V
- fever and chills
sx of gentamicin toxicity
- tinnitus, deafness, balance issues, vertigo
- renal dysfunction/failure
- colitis
- stomatitis
- neutropenia