HOAG ECG Exam | Detailed Review Guide with Exam Questions and Verified Solutions | Grade A+

HOAG ECG Exam | Detailed Review Guide
with Exam Questions and Verified
Solutions | Grade A+

• AV node pace if SA isn't working ✓✓40-60


• Purkinje fiber pace if SA and AV aren't working ✓✓20-40


• valve order through the heart ✓✓tricuspid, pulmonic, mitral, aortic
valve


• P wave is ✓✓atrial contraction/depolarization


• QRS wave is ✓✓ventricular contraction/depolarization


• Q wave is ✓✓first negative deflection after P wave


• R wave is ✓✓1st positive deflection after P wave


• S wave is ✓✓first negative deflection after the R wave


• normal QRS interval ✓✓0.04-0.12 seconds

, • T wave is ✓✓ventricular relaxation or repolarization


• PR interval is ✓✓beginning of P wave to beginning of QRS


• normal PR interval ✓✓0.12-0.20 seconds


• ST segment is ✓✓not measured, but could be bad if it's elevated or
depressed


• QT interval is ✓✓beginning of QRS complex to end of T wave


• normal QT interval ✓✓0.36-0.44 seconds, but adjusted for heart rate


• small box = ✓✓0.04 seconds


• large box = ✓✓0.20 seconds


• 6 second tracing method ✓✓get 6 second tracing, count the R waves
and multiply by 10


• what is 6 second tracing method good for ✓✓irregular heart beat