What is an EKG? An EKG is a paper or digital recording of the electrical signals in the heart. It is also called an electrocardiogram or an ECG. The EKG is used to determine heart rate, heart rhythm and other information regarding the heart's condition. EKGs are used to help diagnose heart arrhythmias, heart attacks, pacemaker function and heart failure.
EKG can be analyzed by studying components of the waveform. These waveform components indicate cardiac electrical activity.
The first upward of the EKG tracing is the P wave. It indicates atrial contraction.
The QRS complex begins with Q, a small downward deflection, followed by a larger upwards deflection, a peak (R); and then a downwards S wave. This QRS complex indicates ventricular depolarization and contraction.
Finally, the T wave, which is normally a smaller upwards waveform, representing ventricular re-polarization.
Basic EKG Interpretation
Our EKG Tutorial and Reference Guides provide basic lessons that explain what is an EKG. Arrhythmia drills and quizzes allow you to practice EKG analysis.
EKG Tutorial: Arrhythmia Drills
Using multiple choice questions and answers, users are asked to identify arrhythmia tracings. Digital calipers are available to assist in analyzing each EKG practice strip. Feedback is provided after each response.
Arrhythmia Practice Drills
Our EKG tutorial guide provides information about many types of arrhythmias. For each EKG arrhythmia we provide multiple electrocardiogram tracings. EKG analysis is provided with a concise summary of the EKG's key features. Tracing features can be measured using our digital calipers.
EKG Tutorial - Introduction
The focus of this introductory EKG tutorial is to provide a tutorial about the main features of EKGs along with a method for analyzing EKGs. This method includes assessment of rhythm, calculating heart rate, observing P-wave forms, measurement of EKG intervals and segments and the evaluation of other relevant waves.
EKG practice exercises serve to reinforce the lesson content.