Investigations Flashcards
1
Q
What are characteristic ECG features of STEMI?
A
- ST elevation
- Tall T waves in acute setting
- Pathological Q waves (>0.04s wide and >2mm deep)
- LBBB (new onset)
2
Q
What are characteristic ECG features of NSTEMI?
A
- ST depression
- Inverted T waves
3
Q
What are characteristic ECG features of a posterior infarct?
A
Tall R waves and ST depression in leads V1-2
4
Q
What are characteristic ECG features of VF?
A
- Characteristic broad complex tachycardia that should be instantly recognised
- No clear QRS complexes
- Rate >120/min
5
Q
What are characteristic ECG features of VT?
A
- Positive QRS concordance in chest leads
- Left axis deviation
- Rate >100/min
- Fusion and capture beats
- Atrioventricular dissociation
- Polymorphic QRS complexes with constantly changing axis in torsade de pointes
6
Q
What are characteristic ECG features of SVT?
A
- Rate >100/min
- QRS <120ms
- Regular rhythm
7
Q
What are characteristic ECG features of AF?
A
- Irregular baseline
- Irregularly irregular
- Rate may be >100/min (<100/min if on rate controlling drugs)
- No p waves
8
Q
What are characteristic ECG features of hyperkalaemia?
A
- Tall tented T waves
- Wide QRS complexes
- Small p waves
- VF
9
Q
What are characteristic ECG features of hypokalaemia?
A
- ST elevation, T wave inversion
- Prolonged QT interval
- Flattened T wave, may be followed by U wave
- Long PR interval
10
Q
What investigation would you do for a suspected PE?
A
- CTPA
- If renal impairment then V/Q scan
