ECG, Mastering ECG Interpretation For Nurses.pptx

seifalislamebada 10 views 60 slides Sep 16, 2025
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About This Presentation

This comprehensive PowerPoint presentation is designed specifically for nurses seeking to enhance their skills in electrocardiogram (ECG) interpretation. Covering essential topics such as basic cardiac anatomy, common arrhythmias, and step-by-step ECG analysis, this presentation provides practical i...


Slide Content

Mastering ECG Interpretation For Nurses A Step-by-Step Guide to Analyze ECG Rhythms Dr. Seif Alislam Ebada Senior GP-A ER Physician MOH, Kuwait

Understand the Basics of ECG 1 • P Wave : Atrial depolarization. • QRS Complex : Ventricular depolarization. • T Wave : Ventricular repolarization. PR Interval: the time from the onset of the P wave to the start of the QRS complex QT Interval: Total time from the beginning of the QRS complex to the end of T wave .

Check the Rhythm 2   • Regular vs. Irregular: Assess the spacing between R-R intervals.   • Identify P Waves: Are they present before each QRS? This indicates atrial activity.

Determine Heart Rate 3 Count R Waves: 300 method: 300 / (number of large squares between R waves) 6-seconds method (count R waves in a 6-second strip and multiply by 10).

P Waves 4 Presence : Are they present and uniform? Morphology : Look for abnormalities that may indicate atrial enlargement or other issues.

PR Interval 5 Normal Range : 120-200 ms (3-5 small squares). Prolonged PR Interval: Indicates possible first-degree AV block. Short PR Interval: Could indicate pre-excitation syndromes (e.g., Wolff-Parkinson-White syndrome).

QRS Complex 6 Width : Normal is <120 ms (3 small squares). A wider QRS may indicate a bundle branch block or other conduction issues. Morphology : Look for abnormal shapes or patterns.

ST Segment 7 Elevation or Depression: ST segment elevation may indicate myocardial infarction, while depression may suggest ischemia. J Point: The junction between the end of the QRS complex and the beginning of the ST segment.

T Wave 8 Shape and Direction: T waves should be upright in most leads. Inversion may indicate ischemia or other conditions. Peaked T Waves: May suggest hyperkalemia.

QT Interval 9 Normal Range: Generally <440 ms in men and <460 ms in women. Prolonged QT Interval: Can increase the risk of arrhythmias.

Identify Any Abnormalities 10 Look for signs of ischemia, infarction, hypertrophy, or other cardiac conditions. Use specific criteria for recognizing conditions such as STEMI, NSTEMI, atrial fibrillation, etc. Consider Clinical Context 11 Practice Regularly 12 Always correlate ECG findings with patient symptoms and history for accurate interpretation Familiarize yourself with different ECG strips and practice interpreting them to enhance your skills

In Basic Life Support (BLS) algorithms, the two primary shockable rhythms are: 1- Ventricular Fibrillation (VF) 2- Ventricular Tachycardia (VT)

1- Ventricular Fibrillation (VF)

2- Ventricular Tachycardia (VT)

criteria for prioritizing ECGs in ER attendees: Chest Pain or Discomfort Shortness of Breath Palpitations Syncope or Near-Syncope Signs of Heart Failure Abnormal Vital Signs Risk Factors for Cardiovascular Disease

Critical ECGs Not to miss in ER

1. Patient Preparation: Proper positioning / Skin preparation 2. ECG Monitoring: Application of electrodes / ECG acquisition 3. ECG Interpretation (Initial Analysis): Recognizing abnormalities such as arrhythmias, ST-segment elevation or depression / Alerting the physician 4. Continuous Monitoring 5. Documentation 6. Patient Education and Comfort: Explaining the procedure / Emotional support 7. Collaboration with the Healthcare Team: Team communication / Assisting with treatment decisions 8. Post-ECG Care Role of ER nurses regarding ECG

When a nurse reviews an ECG in the Emergency Room (ER), there are several emergent changes that should prompt immediate attention, further investigation, and rapid intervention. These changes could indicate life-threatening conditions, such as a myocardial infarction, arrhythmias, or electrolyte imbalances. Nurses should be vigilant for the following key emergent ECG findings :

1. ST Segment Elevation 2. ST Segment Depression 3. T Wave Inversion 4. Ventricular Tachycardia (VT) 5. Ventricular Fibrillation (VF) 6. Complete Heart Block (Third-Degree AV Block) 7. Atrial Fibrillation / Atrial Flutter / SVT 8. Prolonged QT Interval 9. Hyperkalemia Changes 10. Bundle Branch Blocks Emergent ECG Changes

ST-Segment Elevation STEMI Pericarditis Early Repolarization Left Ventricular Aneurysm Brugada Syndrome Hyperkalemia 1

STEMI

Pericarditis

3- Early repolarization

4- Left Ventricular Aneurysm

5- Burgada syndrome

6- Hyperkalaemia

ST-Segment Depression Myocardial Ischemia Ventricular Hypertrophy Digitalis Effect Hypokalemia Aortic Stenosis 2

Myocardial Ischemia

Ventricular Hypertrophy

Digitalis Effect

Hypokalemia

Aortic Stenosis

T Wave Inversion 3

Ventricular Tachycardia (VT) 4

Ventricular Fibrillation (VF) 5

Complete Heart Block (Third-Degree AV Block) 6

Atrial Fibrillation / Atrial Flutter / SVT 7 Atrial Fibrillation

Atrial Flutter

SVT

Prolonged QT Interval 8 QTc range from  350 to 450 ms each small box ( 1 mm ) is equivalent to 0.04 seconds (40 milliseconds), and each large box (5 mm) is equivalent to 0.2 seconds (200 milliseconds)

Hyperkalemia Changes 9 include  peaked T waves, shortened QT interval, and ST-segment depression

Bundle Branch Blocks 10

RBBB

LBBB

Training Your Eyes for Emergency ECG Interpretations

Heart rate 43 bpm