Guitars, Paramedics, Linux, and Me

January 13, 2014

Paramedic EKG Study Guide – Part 2

Filed under: EMS — S. Kindley @ 10:15 am
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Rhythm Identification

You can stare at rhythm strips all day, but you’ll never be consistent at correctly identifying the rhythm until you master the criteria of each rhythm. Before you start looking at strips take the time to learn what makes each rhythm unique.

It does take some practice but once you have the hang of it you’ll really increase you accuracy and speed in identifying various rhythms.

For those with experience: This isn’t a learn it once and forget it skill. This is something you should brush up on every once in a while.

Read on for more …



January 12, 2014

Paramedic EKG Study Guide – Part 1

Filed under: EMS — S. Kindley @ 2:28 am
Tags: , , , , ,


Things To Remember – Part 1

Although this is an EKG study guide it is not intended to be a complete stand alone work of reference. It is merely a study guide I used while attending a paramedic course of study at Vincennes University. I have many more study guides (study aids) to publish when I get some extra time. The information presented is in no particular order and should not be considered medical advice. It’s accuracy is not guaranteed as I’m tired and typing this late at night. Enjoy!

P Wave = Atrial Depolarization, Atria Contract
PR Segment = Delay at AV Node, Atria Relax, Atrial Repolarization
PR Interval = Total Atrial Activity
QRS Complex = Ventricular Depolarization, Ventricles Contract
ST Segment = Ventricles Begin To Relax, Ventricular Repolarization Begins
T Wave = Ventricular Repolarization and Relaxation Completed
ST Interval = Total Ventricular Relaxation
QT Interval = Total Ventricular Activity

Measuring PRI:

  • The PRI is measured from the beginning of the P wave to the beginning of the QRS
  • The normal PRI is 0.12 – 0.20 seconds (3-5 small blocks)

Measuring QRS:

  • The QRS is measured from the beginning of the Q wave to the end of the S wave
  • The QRS is normally less than 0.12 seconds

Autonomic Nervous System:

  • Sympathetic Branch

Affects the atria and the ventricles

Increases heart rate, conduction, irritability

  • Parasympathetic Branch

Affects only the atria

Decreases heart rate, conduction, irritability

Electrical Conduction Through the Heart:

  1. SA Node
  2. Intra-atrial pathway
  3. Inter-nodal pathways
  4. AV Node
  5. Bundle of HIS
  6. Left Bundle Branch
  7. Right Bundle Branch
  8. Purkinje Fibers

Inherent Rates:

SA Node – 60-100 bpm
AV Node – 40-60 bpm
Ventricular – 20-40 bpm

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