Emergency Flashcards
Measured serum osmolality estimate formula
2[Na+]+[glucose]/18+[BUN]/2.8
Anticholinergic toxidrome
Mad as a hatter, dry as a bone, red as a beet, hot as a hare, blind as a bat (tachycardia, urinary retention, ileus)
Cholinergic-muscarinic toxidrome
DUMBELLS Diarrhoea, urination, miosis. Brady/bronchoconstrict Emesis Lacrimation Lethargy Salivation
Cholinergic-nicotinic toxidrome
Days of week Miosis Tachycardia Weakness Tremors Fasiculations Seizures Somulence
Anion gap
[Na+]-([Cl-]+[HCO3-])
Resist adrenaline dose
10mcg/kg
Toxins which constrict and dilate pupils
Constrict: organophosphates, cholinergics (tears everywhere - salivation, lacrimation, sweat, incontinent )
Dilated: anticholinergics including TCA(mad as a hatter, red as a beet, dry as a bone, Lind as s bat, hot as hell)
Serotonin syndrome clinically
Agitated, delirium Tachycardia Fever Sweating Dilated pupils Nausea and vomiting Increased tone and reflexes and myoclonic jerks
Pupils in ecstasy
Dilated
Cyprhepidate if antidote critical
Carbon monoxide most important toxic mechanism
Reverse binding to cytochrome A3
Iron chelation agent in overdose
Desferoxamine
Snake bite most common manifestation
Coagulopathy
Lead poisoning on X-ray
Dense white metsphysesl bands
Mnemonic for wormian bones
PORK CHOPs
Pyknodysostosis Osteogenesis imperfection Rickets Kinky hair Cleidocranial dysostosis Hypothyroid hypophosphataemia Idiopathic Progeria Syndromes
Do retinal haemorrhages occur in pertussis
No
NAI fracture types
Spiral fracture and fracture of distal metaphasis (bucket handle and corner fracture)
Myocarditis causes
Coxsackie, adeno, echo
Drugs
Immune mediated
Chest wall rigidity SE of..
Fentanyl
Hangmans frscture
C2 pedicels
Jefferson frscture
Burst C1
Sclerotic bone lesion
Think osteosarcoma
Monteggia and galeazzi #
GRUesome MURder
Galeazzi radius fracture ulnur dislocation
Monteggia ulnar fracture radial head dislocation
If VF or pulseless VT witness in monitor then..
Defibrillate straight away
Adrenaline dose IM and IV
IM 0.01ml/kg 1:1000
IV 0.1ml/kg of 1:10000
What is commotio cordis
Sudden death Vf in blunt trauma to anterior chest
Risk with supracondylar fracture
Median nerve and brachial artery
How much percent pseudosubluxation. Ervicso spine 2-3 in <8 y
40%
Acute vestibular neuritis any hearing loss
No
Retinitis pigmentosa assoc with
Bardot-Bielefeld (finger and limb abnormalities)
Usher (SNHL)
How common eczema in NZ kids
15-20%
FLG gene for filaggrin important in
Skin barrier
Fingertip unit steroid =
0.5g covers size of two palms of hand
Thumb and steeple sign on neck X-ray indicate
Thumb - epiglottitis
Steeple - croup
Snake bite management
Apply a pressure immobilisation bandage - immobilise joints either side of bite (use a splint), lay the patient down. The aim is to prevent lymphatic spread of venom, not to stop blood supply
Antivenom
The classic findings of a what are unilateral, purulent, malodorous, sometimes bloody discharge.
Nasal FB
VF and pulseless VT give amiodarone when
After 3rd shock
Shock straight away
When witness change to a shockable rhythm on ECG
Beta blocker and calcium blocker antidote
Isoniazid antidote
Benzodiazepines antidote
Sulphonurea antidote
Glucagon (and calcium glauconate)
Pyridoxine
Flumazanil
Octreotide
Meckles investigation
• 99m Technetium pertechnetate scan for ectopic gastric mucosa
Sensitivity improved by ranitidine
Laparoscopy
What changes on X-ray suspicious for supracondylar fracture
Posterior fat pad (anterior can be normal)
Ossification centres elbow
Ossification centres
• Appear in a predictable order
• Mnemonic: CRITOE
• Ages of appearance are approximately
• capitellum (age 1)
• radial head (age 3)
• internal epicondyle (age 5)
• trochlea (age 7)
• olecranon (age 9)
• external epicondyle (age 11)
Salter Harris two and three
ME
2: metaphasis
3: epiphysis
Spinal shock HR and BP
Both low
RF arthritis treatment
Naproxen
Penicillin prophylaxis until what age with severe
40y
Cardiac Surgery within 6m need IE prophylaxis?
Yes
Wormian bones differential
PORK CHOPS
Pyknodysostosis
• Osteogenesis imperfecta
• Rickets (healing phase)
• Kinky hair (Menkes disease)
• Cleidocranial dysostosis
• Hypothyroidism/Hypophosphatasia
• IdiOpathic
• Pachydermoperiostosis/Primary acro-
osteolysis/Progeria
• S
Cocaine antidote
Sodium bicarbonate
Snake bite (brown, tiger and red bellied black effects)
Brown - consumptive coagulopathy can collapse and have cardiac arrest
Tiger - consumptive coagulopathy and systemic symptoms common
Red bellied black - anticoagulant and common to have systemic symptoms
Dance sign RLQretracted in
Intussusception
Wrist drop from
Radial nerve
Mx bleeding oesophageal varices
Gastroscopy and balloon tamponade
Octreotide
Fix clotting
Beta blocker and PPI
Most common bacterial infection and causes
OM viral (25%) Streptococcus pneumoniae (35%) non-typable strains of Haemophilus influenzae (25%) Moraxella catarrhalis (15%). (Second is UTI)
Burns resuscitation fluid if what percent or more body surface burnt
10%
Recent trip to Asia
Fever + 2 of myalgia, retro-orbital pain, arthralgia, headache, leucopoenia, haemorrhagic manifestations
Dengue fever
India travel
Constipation, abdominal pain. Diarrhoea a late sign. Rose spots rare in childhood
Typhoid
Respiratory
GI neuro fever
Trip overseas
Think malaria
Ramsay Hunt syndrome can cause
painful shingles rash, facial paralysis and hearing loss in the affected ear.
Presents with muscle weakness Tingling, numbness, and/or burning in the feet, hands, arms, and legs Confusion or forgetfulness Paranoia Macrocytic anaemia Homocysteinuria and MMA in urine Cause?
12 deficiency
Lacy rash after red cheeks illness cause
Parvovirus B19
When will surgeons correct undesc testes
6-12m
Age to operate hydrofoils and umbilical hernia
3y
In children with reading disability (developmental dyslexia) the underlying neurocognitive deficit most commonly occurs in: A. attention. B. auditory processing. C. phonemic awareness. D. saccadic visual tracking. E. sensorimotor perception
C
Horners and brachial plexus injury at what level
T1
4/5th digits sensation
Ulnar nerve
Rest fingers by median nerve (affected in carpal tunnel)
What is the most common cause of persistent hypoglycaemia under 2 years? The presence of ketonuria and/or ketonaemia makes this diagnosis very unlikely.
Hyperinsulinism
DDx no ketones and fatty acids in blood and Carnitine / acylcarnitine in blood is fatty acid disorder
Reducing substances in urine with hypoglycaemia indicate either
Galactosaemia
Fructosaemia
Urinary amino acids and organic acids indicate
Urea cycle defect
Reversal agent if collapse from local anaesthetic
IV lipid emulsion
BP drop more 10mmHg in systolic BP with inspiration
Two other pulmonary causes
PE and tension pneumothorax
Tamponade
Infant presents like MAS with ferritin >10,000 caused by?
HLH
(Neonatal haemochromatosis presents earlier)
Can be induced by EBV
Hearing affected with vestibular neuritis or labyrinthitis?
Labyrinthitis
Chorea treatment
Carbamazepine
Klumpke and Rebs roots?
C5-7 Rebs
C8/T1 klumpke
Enzyme immunoassay used to detect
Antigen
Antidote to antifreeze (ethylene glycol or methanol)
Ethanol
Fomepizole
10 year old with ataxia worsening, hypertrophic cardiomyopathy, diabetes and scoliosis
Diagnosis?
Friedreichs ataxia
Arnold chiari malformation associated with?
CT disorders
Three triples repeats and one that doesn’t exhibit anticipation
You hunt animals and put them in the cage: Huntington Disease CAG
You SEE a Gross Guy: Fragile X Syndrome CGG
You SEE Tonic Gestures: Myotonic dystrophy CTG
GAA with FXN friedreichs ataxia
Heinz bodies and bite cells on film indicate?
G6PD
Collage affected in osteogenesis imperfect
Collagen 1
COL1A1 and 1A2
Egg anaphylaxis can you give MMR?
Yes
Three causes of eisenmenger syndrome
Clubbing, cyanotic, RVH, increased P2 from plum HTN
PDA
VSD
AVSD
Diagnostic changes in sexual abuse found in what percent
4%