Specialties info cards Flashcards
Normal ICP
<15mmHg
Cheyne-Stokes breathing: character and cause?
Rapid shallow breathing followed by periods of apnoea. Caused by hypoperfusion of respiratory centre of brain
Uncal herniation signs
(Inferomedial temporal lobe through temporal notch)
1) Compression of CN3 -> dilated ipsilateral pupil then ophthalmoplegia
2) Contralateral hemiparesis + coma
Cerebellar herniation
Increased pressure in posterior fossa -> forces cerebellar tonsil through foramen magnum
- Ataxia
- Upgoing plantars
- CN6 palsies
Then - LOC, irregular breathing, apnoea
Cingulate herniation
Frontal mass -> medial frontal lobe forced under rigid falx cerebrum
If compression of cerebral artery too -> stroke
Suspected meningococcal meningitis?
1.2g IM BenPen
VT ECG findings
- Marked LAD
- QRS concordance in chest leads
- AV dissociation in 25% or 2:1/3:1 AV block
- Fusion beats or capture beats
Adverse cardiac signs
Shock (BP<90, Pulse>100)
Syncope
Heart failure
Chest pain/ischaemia on ECG
Causes of torsades des points
Congenital eg Tx with beta blockers
Drugs eg anti-dysarrhythmics, TCA, anti-psych, anti-malarials
Digoxin toxicity presentation (ie electrophysiologically)
SVT with AV block
- give Digoxin specific Ab fragments
What is the score to assess whether anticoag is indicated in AF patients? What does it predict?
Score of 2 = 2.2% annual risk of stroke
CHA2DS2VASc score
What is the HAS-BLED score used for?
Score predicts bleeding in anticoagulated AF patients to assess risk benefit in their care
In most people what does the right coronary artery supply in the heart?
SAN and AVN
- so pts can get bradycardic after inferior MI
What is beck’s triad?
Low BP, muffled heart sounds, raised JVP
What is Kussmaul’s sign?
Raised JVP on inspiration