EKG Exam

EKG Examination

Student Name — Required Before Submitting

Your name will appear on your grade sheet. Save the grade sheet as a PDF and upload to Canvas.

Question 13 pts · 1 pt each

Each letter (A–E) identifies a waveform deflection. Match each letter to its physiological event.

Atrial depolarization

Ventricular depolarization

Ventricular repolarization

Question 22 pts

Answer both definition questions.

2a. (1 pt) Define the isoelectric line on an EKG:

2b. (1 pt) Atrial repolarization occurs on the EKG but is not typically visible as its own waveform. Where is it found?

Question 33 pts · 1 pt each

Use the caliper below to measure each interval. Record in seconds.

Set the span, lock it, then drag the locked caliper to align with a major dark line to count boxes cleanly.

Red leg

Blue leg

Crossbar = move both

Unlocked — drag legs to set span, then lock

PR Interval (sec)

QRS Duration (sec)

QT Interval (sec)

Question 42 pts · 1 pt each

Calculate heart rate using both methods. Red tick marks = 6-second boundaries. Green bracket = one R-R interval.

300 Method (bpm)

6-Second Method (bpm)

Question 53 pts

Identify this rhythm and describe one distinguishing feature.

Rhythm identification (2 pts)

One feature distinguishing this from NSR (1 pt)

Question 63 pts

Identify this rhythm and name one hallmark feature.

Rhythm identification (2 pts)

One hallmark distinguishing feature (1 pt)

Question 73 pts

Identify this rhythm and answer the follow-up question.

Rhythm identification (2 pts)

This rhythm can primarily degenerate into (1 pt)

Question 83 pts

Identify this rhythm and identify the specific abnormal interval. Use the caliper to measure the PR interval and confirm your answer.

Red leg

Blue leg

Crossbar = move both

Unlocked — drag legs to set span, then lock

Rhythm identification (2 pts)

Which interval is prolonged? (1 pt)

Question 93 pts

Identify this rhythm and name one feature that distinguishes it from Normal Sinus Rhythm.

Rhythm identification (2 pts)

One feature that distinguishes this from NSR (1 pt)

Question 103 pts

Identify this rhythm and name the definitive treatment.

Rhythm identification (2 pts)

Definitive treatment for this rhythm (1 pt)

Question 113 pts

Read the clinical scenario carefully before examining the strip.

⚠ Clinical Scenario — Read Before Answering

EMS responds to a 58-year-old male found unresponsive on the floor. Bystanders report sudden collapse during dinner. The patient is unresponsive and apneic. CPR is initiated immediately. The monitor shows the organized rhythm below. You pause CPR and check for a carotid pulse — there is absolutely no palpable pulse.

Based on the clinical presentation AND the EKG together (2 pts)

Immediate treatment priority (1 pt)

Bonus — Extra Credit2 pts

Both questions relate to a rhythm not shown on this exam. These points add to your score as extra credit beyond 31.

Bonus 1 (1 pt) — Electrolyte deficiency most associated with Torsades de Pointes:

Bonus 2 (1 pt) — First-line medication treatment for Torsades de Pointes:

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Student Name

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Date Completed

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EKG Examination

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