Cardiac Electrophysiology
Tracking # 20-1351926
Course overview
Objectives Describe electrophysiology principles Explain basic and advanced principles of ECG monitoring Content Information Covered 1 Electrophysiology 1 Characteristics of myocardial cells 1 Automaticity 2 Excitability 3 Conductivity 4 Contractility 2 Electrical potential 1 Action potential important electrolytes 1 Sodium 2 Potassium 3 Calcium 4 Chloride 5 Magnesium 2 Excitability 1 Thresholds 2 Depolarization 3 Repolarization 1 relative refractory period 2 absolute refractory period 3 Neurotransmitters 1 Acetylcholine 1 effects on myocardium 2 effects on systemic blood vessels 2 Cholinesterase 1 effects on myocardium 2 effects on systemic blood vessels 2 Electrocardiographic ECG monitoring 1 Electrophysiology and wave forms 1 Origination 2 Production 3 Relationship of cardiac events to wave forms 4 Intervals 1 Normal 2 Clinical significance 5 Segments 2 Leads and electrodes 1 Electrode 2 Leads 1 Anatomic positions 2 Correct placement 3 Surfaces of heart and lead systems 1 Inferior 2 Left lateral 3 Anterior posterior 4 Artifact 3 Standardization 1 Amplitude 2 Height 3 Rate 1 Duration 2 Wave form 3 Segment 4 Complex 5 Interval 4 Wave form analysis 1 Isoelectric 2 Positive 3 Negative 4 Calculation of ECG heart rate 1 Regular rhythm 1 ECG strip method 2 300 triplicate method 2 Irregular rhythm 1 ECG strip method 2 300 triplicate method Lead systems and heart surfaces 1 ECG rhythm analysis 1 Value 2 Limitations 2 Heart surfaces 1 Inferior 2 Left lateral 3 Precordial 3 Acute signs of ischemia injury and necrosis 1 Rationale 1 possible early identification of patients with acute myocardial infarction for intervention thrombolysis PTCA 2 the role of out of hospital 12 lead ECG is not universally available but is appropriate in most EMS settings with proper medical oversight 2 Advantages disadvantages 3 ST segment elevation 1 height depth and contour 2 ST acute changes 1 anterior wall significant ST elevation in V1 V4 may indicate anterior involvement 2 inferior wall significant ST elevation in II III and aVF may indicate inferior involvement ST segment depression in eight or more leads ST segment elevation in aVR and V1 4 Q waves 1 depth duration and significance 1 greater than 5 mm greater than 0.04 seconds 2 may indicate necrosis 3 may indicate extensive transient ischemia
Subject areas
This course counts toward the state boards and subject areas below.
Florida Emergency Medical Services
Emergency Medical Technician
Paramedic
Disclosure statements
Conflict of Interest Statement
- A conflict of interest occurs when an instructor has a financial, legal, commercial, and/or professional relationship with organizations or the employees working for said organization, that could influence the level of instruction you receive. The instructor of this course has no conflicts of interest and has been properly vetted prior to creating this material to ensure the information being shared is accurate, relevant, and up to date.
Post-Course Quiz Performance and Compliance
- At the conclusion of this course you will be required to attempt and pass a quiz. The minimum passing score for the quiz is 70%. You will have three attempts to pass the quiz. If you are unsuccessful at passing the quiz on the third attempt, you will be required to watch the CE course over in its entirety.