Mod 4 OSCE Flashcards
Order of ECG interpretation
- This is a 12 lead ECG of (Name, DOB, Hospital No.)
- Taken on ___
- Speed is 25mm/sec, ECG is calibrated
- Axis Deviation
- Rate
- Rhythm strip - Regularity, P-waves (followed by QRS? Shape?), QRS, T waves, PR intervals, QT
- Rest of the leads - same? R-wave progression? Poor due to prev MI or obesity. Flutter waves?
- Summarise and suggest diagnosis
In normal cardiac axis
- Lead I is normal
- Lead II is normal (maybe taller than I)
- Lead III is neutral
P wave too tall
RA abnormality
(congenital heart disease, pulmonary disease)
How long should a PR interval be?
3 - 5 small squares
QT interval is?
Time taken for ventricles to depolarise then repolarise
QRS too wide?
Supraventricular - BBB, Brugada, pre-excitation
Ventricular - Ectopic, pacemaker
ST segment elevation
STEMI, Pericarditis
T wave represents
Ventricular repolarisation
In which leads would you see changes for lateral heart damage?
- I
- AVL
- V5
- V6
How wide should a QRS complex be?
< 3 small squares
In right axis deviation
- Lead I is small, neutral, negative
- Lead II is normal
- Lead III is normal, maybe taller than II
PR interval too long?
1st or 2nd degree heart block
P wave too broad?
- Valve disease, HTN, Cardiomyopathy, Coronary Heart Disease
QRS too tall?
Ventricular hypertrophy
In left axis deviation
- Lead I is positive, small
- Lead II is negative
- Lead III is negative, taller than II
T wave - too tall?
Hyperkalaemia
The anterior surface of the heart is supplied by the?
Right Coronary Artery (RCA)
Which leads would you see changes in for septal damage?
- V1
- V2
Q wave?

Previous MI
What should you screen for after RAV and ICE?
- SOB
- Chest pain
- Palpitations
- Syncope/dizziness
The inferior heart is supplied by?
Right coronary artery
ABPI ranges?

What view is this?

Axial
Questions in Hx of collapse?
3 PS:
- Prodromal symptoms (how did you feel before collapse? Dizziness/blurred vission/nausea)
- Post Event Phenomena (how quickly did you recover? Confusion/Nausea?)
- Precipitant - where were you, what were you doing?
PR interval
Time for conduction through atria and purkinjie fibres (via AVN and Bundle of His)
Questions for ACS patient after open questions?
Full SOCRATES
Questions for post stroke/TIA patient
- Weakness
- Sensation
- Visual changes
- Speech changes?
- Facial Droop?
- Onset/duration and frequency?
Specific questions for PMHx?
Risk factors:
- HTN
- DM
- High cholesterol
- Heart attack
- Stroke/TIA
History for suspected PVD?
- Maximum walking distance? Uphill + on flat
- Screen for 6Ps (pain, pallor, paraesthesia, paralysis..)
- Any ulcers? Gangrene? Rest pain? –> Critical Limb Ischaemia
How do you calculate the Rate on ECG?
- 300 ÷ no. of large squares from R-R
- If irregular, count the no. of QRS complexes x 6
haemorrhage shows up on CT as?
Bright white areas - hyperattenuation
QRS = ?
Ventricular depolarisation
(atrial repolarisation occurs now but is masked)
Putting on ECGs - Procedure?
- Intro - name, DOB, Hospital no,
- Explain procedure
- Ever had done before? Allergies?
- Expose patient
- Attach stickies - Ride Your Green Bike (rt hand, clockwise etc)
- “Lie completely still for me please”
- Check on screen, capture, print
What does this show?

intracerebral haemorrhage
Ishaemia shows up as
dark areas - hypoattenuation
What does this show?

Loss of Insular ribbon
Questions for AF? (5 things)
- Palpitations? Tap it out
- When do they occur?
- Any trigger?
- How often do they occur?
- How long do they last?
Which leads would you see changes in if damage had happened to the anterior heart?
- V3
- V4
Questions for FHx
- Any death due to MI <65?
- Any sudden/unexpected/unexplained death?
Septum of the heart is supplied by the?
Left Anterior Descending artery (LAD)
What does this show?

Midline shift
What view is this?

Coronal
What does this show?

hyperdense MCA sign
ST segment represents?
Time between depolarisation and repolarisation of ventricles (start of repolarisation)
What does this show?

extradural haemorrhage (biconvex)
P wave
Atrial depolarisation
ST segment depression?
Angina, NSTEMI
T wave - QT interval too short/too long ***
Ventricular arrhythmia
T wave - inverted?
Ischaemia, ventricular hypertrophy, BBB
What does this show?

subarachnoid haemorrhage
Small square = ?
Big square = ?
Small square = 0.04s
Big square = 0.2s
Which leads would you see changes in if there was damage to the inferior heart?
- II
- III
- AVF
PR interval too short?
Accessory pathway e.g. WPW
P wave absent?
AF, Flutter, AVRT, AVNRT
How do you present a radiology image?
- Patient details - Name, DOB, Hospital No
- Date Taken
- Method of Imaging and view
- Most obvious abnormality with correct description (attenuation for CT, signal for MRI)
- Any other abnormalities, possible negative findings
- Differentials
- Working Diagnosis
The lateral heart is supplied by the?
Circumflex Artery
What does this show?

subdural haemorrhage (crescent shape)
What view is thiss?

Saggital