1. Craig Ernst, MHS, PA-C

3.  Rate  Rhythm  Axis  Hypertrophy  Infarct  ST-T Changes (injury/ischemia)  Intervals ◦ PR ◦ QRS ◦ QT

4.  Quick Estimate ◦ “300, 150, 100, 75, 60, 50”  Alternative Methods ◦ 6 second strip and multiply by 10 Or ◦ 1500/# mm between R-R

7.  P before each QRS?  QRS follows each P?  Regular or Irregular?

11.  Leads I and AVF ◦ Upright in both = normal axis ◦ Up in I and down in AVF = LAD ◦ Down in I and up in AVF = RAD ◦ Down in both = Extreme RAD

15.  S in V1 + R in V5 = greater than or equal to 35 mm  R in AVL greater than 11 mm

17.  Q wave of greater than.04 sec (one small block)  Q wave 1/3 the amplitude or more of the QRS complex

21.  Injury ◦ ST elevation  Ischemia ◦ ST depression or T wave inversions  Location ◦ Same as for MI

26.  PR duration: less than 0.12 or greater than 0.20  QRS duration: greater than 0.12  QT duration: greater than 0.44 ◦ Should not be greater than half the R-R interval

32.  Blocks ◦ 1 st degree ◦ 2 nd degree  Mobitz I  Mobitz II ◦ 3 rd degree

36.  Ectopy ◦ PVC ◦ PAC

40.  Tachycardias ◦ Sinus ◦ MAT ◦ PSVT ◦ A-fib ◦ A-flutter ◦ VT

49.  Potassium  Calcium  Drugs ◦ B-blockers ◦ Calcium channel blockers ◦ Digitalis

53. Case