ECG rules COPY

Question 1

What are the modified Sgarbosa critera?

Answer 1

1. ≥ 1 lead with ≥1 mm of concordant ST elevation
2. ≥ 1 lead of V1-V3 with ≥ 1 mm of concordant ST depression
3. ≥ 1 lead anywhere with ≥ 1 mm STE and proportionally excessive discordant STE, as defined by ≥ 25% of the depth of the preceding S-wave.

Question 2

Prominent U waves are defined as …….. and may be seen with:

Answer 2

U waves are prominent if>1-2mm or 25% of the height of the T wave.

1. Hypocalcaemia / magnesaemia & hypothermia
2. Raised ICP
3. LVH or hypertrophic cardiomyopathyDrugs
4. Digoxin
5. Phenothiazines (thioridazine)
6. Class Ia antiarrhythmics (quinidine, procainamide)
7. Class III antiarrhythmics (sotalol, amiodarone)