Dosages

Question 1

Paracetamol Dosages

Answer 1

Pain Relief CPG
1g for Adults
500mg for frail / elderly or patients under 60kg / liver disease / malnourished

Onset 30 min
Duration 4 hours

Question 2

Ketamine Dosages

Answer 2

Pain relief CPG
-IN 75mg repeat 50mg at 20 minute intervals (no max dose)
OR for frail / elderly / < 60kg give
-IN 50mg repeat 25 mg at 20 minute intervals (no max dose)
Onset @ 5 minutes Duration 45minutes

Agitated patient
IM
- < 60kg 200 mg
- 60 - 90 Kg 300 mg
- > 90 kg 400 mg
Consult for additional dose
Onset @ 3-4 minutes Duration 12-25 minutes

Question 3

Morphine Dosages

Answer 3

Pain relief CPG
IV
Up to 5 mg @ 5 minute intervals max dose of 20mg
consult for additional dosing
Onset 2-5 minutes Duration 1-2 hours
IM
10 mg then repeat 5 mg at 15 minutes (once only)
OR
0.1 mg / KG for Frail / elderly / < 60kgs NO 2nd dose
Onset @10-30 minutes and duration 1-2 hours

Question 4

Fentanyl Dosages

Answer 4

As per pain relief CPG
IV
50mcg @ 5 minute intervals max is 200 mcg
consult for addition if over 200mcg
Onset immediate Duration 30 - 60 minutes

IN
200 mcg with 50mcg @ 5/60 interval max dose 400mcg
OR for Frail / elderly / < 60kg
100 mcg with 25 mcg @ 5/60 intervals max dose 200mcg
peak 2 minutes
IM
100mcg with repeat of 50mcg @ 15/60 (once only)
OR for frail / elderly / < 60kg
1mcg/kg no repeat dose

Question 5

Methoxyflurane Dosages

Answer 5

Pain relief CPG
3 ml inhaled repeat 3 ml at completion of first (one off repeat max dose 6ml)
Onset 8-10 breaths Duration approx 3-5 minutes

Question 6

Glyceryl Trinitrate Dosages

Answer 6

Pulmonary oedema and ACS CPG
dosing is identical
SL
- 300-600 mcg @ 5/60 minute intervals Monitor for side effects
Patch
Onset 30 sec - 2 minutes Duration 15-30 minutes
Transdermal
- 50 mg on left shoulder 0.4mg/hour
onset up to 30/60 Peak 2 hours
AUTONOMIC DYSREFLEXIA
300mcg sl if first time dosing or 600mcg repeated 10/60
no patch

Question 7

Heparin Dosages

Answer 7

STEMI Management
IV
4000iu repeat 1000iu @ 1/24 intervals
Onset Immediate Duration 3-6 hours

Question 8

Ventolin adult Dosages

Answer 8

COPD
Neb - 10mg as a one off dose
Onset 5-15 Duration 15-60 min

ASTHMA
PMDI - 4-12 doses via spacer 4 breath per puff @ 20 min intervals (mild)
Neb - 10 mg repeat 5mg @5 minute intervals

Anaphylaxis
PMDI - 4 -12 doses @ 20 minute intervals
Neb - 5 mg @ 20 minute intervals

Question 9

Ipratropium Bromide Dosages

Answer 9

COPD Asthma Anaphylaxis
Neb - 500 mcg once off dose
PMDI - 8 puffs (4 breaths per dose)

Question 10

Dexamethasone Adult dosing

Answer 10

COPD, ASTHMA, ANAPHYLAXIS
8 MG Oral or IV
IV Onset 30-60 minutes believing Duration 36-72 hours

Question 11

Na Saline for Anaphylaxis and N&V Dosages

Answer 11

Anaphylaxis, Nausea and Vomiting
IV 40ml/KG titrate to response repeat 20 ml/kg with consult (see fluid deck)

Question 12

Olanzapine Dosages

Answer 12

Agitated patient
Oral - 10 mg
OR
5 mg for Frail / elderly / <60 kg
repeat @ 20/60 if patient remains agitated
Onset 15 min Duration 12-24 hours

Question 13

Midazolam for the agitated patient Dosages

Answer 13

Agitated Patient
IM
5 - 10 mg repeat dosing @ 10/60 (max dose 20mg) repeat IM dosing only once
OR
2.5 -5 mg for Frail / elderly / < 60 kg / SBP < 100 or significantly effected from alcohol
repeat dose @ 10 minute interval Max dose is 20 mg
Onset 3-5 minute Duration 30 minutes
IV
2.5-5 mg repeat at 5 minutes
Frail
1-2mg repeat at 5 minutes

Question 14

Adrenaline Dosages

Answer 14

Medical arrest high performance CPR,, Anaphylaxis, Asthma
IV - 1 mg of 1:1000 @ 4/60 no max dose
IV Asthma 20 mcg at 2 minute intervals
Onset 30 seconds Duration 5-10 minutes
IM Asthma - 500mcg 1:1000mcg every 5-10 minute max 1.5g
IM Anaphylaxis - 500 mcg 1:1000mcg every 5 minutes
Onset 30-90 seconds Duration 5 - 10 minutes
NEB Anaphylaxis - 5 mg consult for repeat dose

Question 15

Aspirin Dosages

Answer 15

ACS
300mg tablet once off dose
Duration 8-10 days

Question 16

Ondansetron Dosages

Answer 16

Nausea and vomiting
Orally 4 mg with repeat @ 5-10/60 (8mg max dose)
Onset 2 minutes Duration 120 minutes
IV 8 mg once off
Onset 5 minutes Duration 2.5 - 6 hours

Question 17

Prochlorperazine Dosages

Answer 17

Nausea and Vomiting
IM 12.5 mg once off dose
Onset 20 minutes Duration 6 hours

Question 18

Oxytocin Dosages

Answer 18

If fundus remains not firm after massage
10iu IM
repeat 5/60 10iu if required

Question 19

Naloxone Dosages

Answer 19

Uncomplicated Opioid
800 mcg IM
Repeat 10/60

Complex Opioid
100mcg IV repeat 2/60
until adequately ventilating Max 200mcg

No IV 400mcg one off IM

Question 20

Midazolam for seizure all ages Dosages

Answer 20

Adult
10 mg IM
repeat once only 10 mg
Frail (<60 kg)
5mg repeat dose at 5/60

Medium child (5-11)
2.5 - 5 mg
small child (1-4)
2.5 mg
Small/large infant (up to 12 months)
1 mg
Newborn (<24 hours)
0.5 mg
Repeat all Paed original dose at 10/60 once only

Question 21

Adrenaline Paeds Dosages

Answer 21

Anaphylaxis < 12
10mcg/kg 1:100 max 500mcg per dose
5/60 no max doses

Question 22

Ceftriaxone Dosages

Answer 22

Meningococcal
1g IV
dilute with 10ml give over 2/60
!g IM
dilute with 3.5ml 1% lignocaine (=4ml)
give in large muscle
SEPSIS
consult receiving hospital and give 2g

Question 23

Ceftriaxone Paeds Dosages

Answer 23

Meningococcal septicaemia
50mg/kg IM
dilute 3.5ml of 1% lignocaine to make 4ml then extract dose and administer in large muscle