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# Step 1 - Rhythm Analysis - Course # 318-4

## Introduction

• When analyzing cardiac rhythm strips it is important to recognize what the cardiac complex represents and what is considered normal versus abnormal.
• The technique and interpretation of cardiac rhythms is a combination of science and art.
• The more you practice rhythm analysis the more comfortable you will be with the process involved and the intuitive aspects of interpretation.

## Description

• When a normal heart is beating this is the result of electrical impulses that spread through the atria and then the ventricles in an organized, sequential manner. Atria, then ventricles, atria, then ventricles over and over again.
• When analyzing the tracing you will first check R wave to R wave across the strip. If the intervals vary by 1 ½ small boxes or less the rhythm is considered regular.
• If you take your own pulse now and then again in 10 minutes it is unlikely that your heart rate will be exactly the same number. This is because of a number of factors all working together in an effort to maintain our body within a specific range of “normal”, often referred to as homeostasis.
• R wave to R wave analysis refers to the rhythmicity of the ventricles.
• Now measure the P wave to P wave intervals. This refers to the rhythmicity of the atria.

## Practice 1

Analyze this tracing. Its is regular or irregular?

Regular
Irregular

## Practice 2

Analyze this tracing. Its is regular or irregular?

Regular
Irregular

## Lessons

 Overview Introduction Graph Paper Step 1 - Rhythm Analysis Step 2 - Heart Rate Regular Step 3 - P wave Morphology (Shape) Step 4 – PR interval (PRi) Step 5 – QRS Complex Closing Test Questions 1-3 Test Questions 4-6 Test Questions 7-9 Test Questions 10-12 Test Questions 13-14 Test Questions 15-17 Test Questions 18-21 EKG Self Test

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318 Step 1 - Rhythm Analysis - Course # 318-4