EKG Lab

Normal EKG

A. Wienkibock or 2 nd Degree Heart Block No Ventricular Contraction No QRS Interval Tiredness May Require Pacemaker

B. Premature Atrial Contraction Atria Contracts Before Ventricle Completely Relaxes Fairly Common P Wave sooner than expected and abnormal shape

C. No Atrial Contraction No P Wave Similar to Atrial Fibulation No Topping Off of Ventricle

D. Premature Ventricular Contraction No P Wave (masked by QRS wave) Ventricle Contracts Before Atria Tops It Off Fairly Benign and More Common With Stimulant Use

E. After a Heart Attack Muscle Damage Inverts QRS Will Always Be Upside Down After a Heart Attack Looks Completely Normal If You Turn the Page Upside Down

F. Active Heart Attack S-T Elevated Inverted QRS Can’t Relax and Recover So There Is No Return To Baseline

G. First Degree Heart Block Too Long Between P and QRS Impulse Blocked Usually Benign

H. Complete Heart Block No Communication Fires at Random Pacemaker Required