際際滷

際際滷Share a Scribd company logo

2.How to analyze a rhythm.ppt

Download as PPT, PDF
A
abojeochekwu

This document outlines the steps for analyzing ECG rhythms: 1) Calculate the heart rate by counting R waves over 6 seconds or finding an R wave that lands on a bold line and counting boxes until the next R wave 2) Determine if the rhythm is regular, occasionally irregular, regularly irregular, or irregularly irregular 3) Assess the P waves to see if they are present, consistent in appearance, and occur regularly before each QRS complex 4) Measure the PR interval, which should be between 0.12 to 0.20 seconds 5) Measure the QRS duration, which should be between 0.04 to 0.12 seconds When these steps are applied to the provided rhythm

1 of 13
Download to read offline
ECG Rhythm Interpretation Module II How to Analyze a Rhythm
Course Objectives To recognize the normal rhythm of the heart - Normal Sinus Rhythm. To recognize the 13 most common rhythm disturbances. To recognize an acute myocardial infarction on a 12-lead ECG.
Learning Modules ECG Basics How to Analyze a Rhythm Normal Sinus Rhythm Heart Arrhythmias Diagnosing a Myocardial Infarction Advanced 12-Lead Interpretation
Rhythm Analysis Step 1: Calculate rate. Step 2: Determine regularity. Step 3: Assess the P waves. Step 4: Determine PR interval. Step 5: Determine QRS duration.
Step 1: Calculate Rate Option 1 Count the # of R waves in a 6 second rhythm strip, then multiply by 10. Reminder: all rhythm strips in the Modules are 6 seconds in length. Interpretation? 9 x 10 = 90 bpm 3 sec 3 sec
Step 1: Calculate Rate Option 2 Find a R wave that lands on a bold line. Count the # of large boxes to the next R wave. If the second R wave is 1 large box away the rate is 300, 2 boxes - 150, 3 boxes - 100, 4 boxes - 75, etc. (cont) R wave
Step 1: Calculate Rate Option 2 (cont) Memorize the sequence: 300 - 150 - 100 - 75 - 60 - 50 Interpretation? 3 0 0 1 5 0 1 0 0 7 5 6 0 5 0 Approx. 1 box less than 100 = 95 bpm
Step 2: Determine regularity Look at the R-R distances (using a caliper or markings on a pen or paper). Regular (are they equidistant apart)? Occasionally irregular? Regularly irregular? Irregularly irregular? Interpretation? Regular R R
Step 3: Assess the P waves Are there P waves? Do the P waves all look alike? Do the P waves occur at a regular rate? Is there one P wave before each QRS? Interpretation? Normal P waves with 1 P wave for every QRS
Step 4: Determine PR interval Normal: 0.12 - 0.20 seconds. (3 - 5 boxes) Interpretation? 0.12 seconds
Step 5: QRS duration Normal: 0.04 - 0.12 seconds. (1 - 3 boxes) Interpretation? 0.08 seconds
Rhythm Summary Rate 90-95 bpm Regularity regular P waves normal PR interval 0.12 s QRS duration 0.08 s Interpretation? Normal Sinus Rhythm
End of Module II How to Analyze a Rhythm Proceed to Module II Practice Quiz on WebCT

More Related Content

2.How to analyze a rhythm.ppt

  • 1. ECG Rhythm Interpretation Module II How to Analyze a Rhythm
  • 2. Course Objectives To recognize the normal rhythm of the heart - Normal Sinus Rhythm. To recognize the 13 most common rhythm disturbances. To recognize an acute myocardial infarction on a 12-lead ECG.
  • 3. Learning Modules ECG Basics How to Analyze a Rhythm Normal Sinus Rhythm Heart Arrhythmias Diagnosing a Myocardial Infarction Advanced 12-Lead Interpretation
  • 4. Rhythm Analysis Step 1: Calculate rate. Step 2: Determine regularity. Step 3: Assess the P waves. Step 4: Determine PR interval. Step 5: Determine QRS duration.
  • 5. Step 1: Calculate Rate Option 1 Count the # of R waves in a 6 second rhythm strip, then multiply by 10. Reminder: all rhythm strips in the Modules are 6 seconds in length. Interpretation? 9 x 10 = 90 bpm 3 sec 3 sec
  • 6. Step 1: Calculate Rate Option 2 Find a R wave that lands on a bold line. Count the # of large boxes to the next R wave. If the second R wave is 1 large box away the rate is 300, 2 boxes - 150, 3 boxes - 100, 4 boxes - 75, etc. (cont) R wave
  • 7. Step 1: Calculate Rate Option 2 (cont) Memorize the sequence: 300 - 150 - 100 - 75 - 60 - 50 Interpretation? 3 0 0 1 5 0 1 0 0 7 5 6 0 5 0 Approx. 1 box less than 100 = 95 bpm
  • 8. Step 2: Determine regularity Look at the R-R distances (using a caliper or markings on a pen or paper). Regular (are they equidistant apart)? Occasionally irregular? Regularly irregular? Irregularly irregular? Interpretation? Regular R R
  • 9. Step 3: Assess the P waves Are there P waves? Do the P waves all look alike? Do the P waves occur at a regular rate? Is there one P wave before each QRS? Interpretation? Normal P waves with 1 P wave for every QRS
  • 10. Step 4: Determine PR interval Normal: 0.12 - 0.20 seconds. (3 - 5 boxes) Interpretation? 0.12 seconds
  • 11. Step 5: QRS duration Normal: 0.04 - 0.12 seconds. (1 - 3 boxes) Interpretation? 0.08 seconds
  • 12. Rhythm Summary Rate 90-95 bpm Regularity regular P waves normal PR interval 0.12 s QRS duration 0.08 s Interpretation? Normal Sinus Rhythm
  • 13. End of Module II How to Analyze a Rhythm Proceed to Module II Practice Quiz on WebCT