12 lead ECGs

12 lead ECGs

Quick Reminder

V1 --> 4th intercostal space, right of patient’s sternum

V2 --> 4th intercostal space, left of patient’s sternum

V3 --> Between V2 and V4

V4 --> Midclavicular line, 5th intercostal space

V5 --> Between V4 and V5

V6 --> Level with V4, midaxillary line

Case 1

Monday morning at 0230:

You are dispatched for a 71yom with generalized weakness. His car recently broken down and he has not been out of his house for a week. He denies chest pain, shortness of breath, or infectious symptoms.

Medical history includes:

Congestive heart failure | Diabetes mellitus | End-stage renal disease | Hypertension | Stroke

HR: 80 | BP: 112/68 | RR: 18 | SPO2: 96% on room air | Temp: 97.8F

Multiple Choice

What is the critical finding in this ECG?

• ST Elevation MI

• Complete Heart Block

• Hyperkalemia

• Second degree heart block, type 2