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Basic EKG Questions and Answers: A Guide to Arrhythmias, Exams of Health sciences

A comprehensive overview of basic ekg concepts and arrhythmias, including their characteristics, interpretation, and clinical significance. It features a series of questions and answers designed to enhance understanding of ekg readings and arrhythmia identification. Key aspects such as rhythm, rate, p wave, pr interval, qrs duration, and qt interval, providing valuable insights for students and professionals in the medical field.

Typology: Exams

2024/2025

Available from 10/31/2024

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Basic EKG Questions and Answers
Graded A
ABC's of Arrhythmias
- Rhythm
- Rate
- "P" Wave
- PR Interval
- QRS Duration
Measure the Intervals
Normal PR Interval
0.12-o.20 s (3 - 5 small squares)
Normal QRS Complex
0.06 - 0.10 s
Normal P wave height and width
Height - <2.5mm
Width - <0.11 s
pf3
pf4
pf5
pf8
pf9
pfa

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Basic EKG Questions and Answers

Graded A

ABC's of Arrhythmias

  • Rhythm
  • Rate
  • "P" Wave
  • PR Interval
  • QRS Duration

Measure the Intervals

Normal PR Interval

0.12-o.20 s (3 - 5 small squares)

Normal QRS Complex

0.06 - 0.10 s

Normal P wave height and width

Height - <2.5mm Width - <0.11 s

Normal QT Interval

0.42 s

Which arrhythmias have regular rhythms?

  • Sinus Rhythms
  • Junctional Rhythms
  • Ventricular Rhythms
  • Heart Blocks
  • Atrial Rhythms

Which arrhythmias have Irregularly Irregular rhythms?

  • Atrial Fibrillation
  • Multifocal Atrial Rhythms
  • Atrial Flutter (Variable Ventricular Response)

Which arrhythmias have Patterned Irregular Rhythms?

  • Second degree Heart Block Type one
  • Bigeminal Patterns
  • Trigeminal Patterns

Which arrhythmias have Patterned Regular Rhythms?

  • Atrial Flutter with 2:1 Conduction
  • Sinus Arrhythmia

How is the rate determined on an EKG?

Eucardia HR

60 - 100 BPM

The P Wave

What does the P wave in an EKG indicate?

Represents Atrial depolarization and subsequent contraction.

What morphology can a P wave have?

  • Notched
  • Peaked
  • Biphasic

The PR Interval

What is the PR Interval?

The distance between the beginning of the P wave and the beginning of the QRS complex

What can a long PR interval indicate?

  • First degree Heart Block
  • Ca++ or beta blocker intoxication
  • Sarcoid or connective tissue disease

What can a short PR interval indicate?

  • LGL
  • Catacholamine intoxication
  • Thyroxotoxosis
  • Street drugs (cocaine or methamphetamine)

The QRS Complex

What is the QRS complex?

Ventricular activation and depolarization time and subsequent ventricular contraction

What can a prolonged QRS duration indicate?

Prolonged (> 0.12 sec)

  • Bundle branch block
  • Ventricular rhythm
  • Pre-excitation syndromes
  • Non-specific Interventricular Conduction Defects

Sinus Tachycardia

Sinus Pause/Arrest

Premature Atrial Contraction

Ectopic Atrial Tachycardia

Wandering Atrial Pacemaker

Atrial Flutter

Atrial Fibrillation

Premature Junctional Contraction

Junctional Escape Beat

Junctional Rhythm

Ventricular Tachycardia

Torsade De Pointes

Ventricular Flutter

Ventricular Fibrillation

Sinus Rhythm w 1st Degree Heart Block

Sinus Rhythm with 2nd Degree Heart Block Type 1 (Wenckebach / Mobitz I)

Sinus Rhythm with 2nd Degree Heart Block Type 2 (Mobitz II)

Sinus Rhythm with Atrioventricular Dissociation (3rd Degree Heart Block)