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Level 1Cardiology Office Skills

EKG Acquisition Basics

Get a clean 12-lead EKG — correct lead placement, skin prep, and reducing artifact.

Beginner~11 min

Learning Objectives

  • 1.Place 12-lead EKG electrodes correctly.
  • 2.Prepare the skin and patient for a clean tracing.
  • 3.Recognize when to repeat a poor-quality EKG.

Goal

A clean, correctly placed EKG is essential — misplaced leads or artifact can hide or fake findings the provider relies on.

Step-by-step

  1. 1.Explain the test; position the patient supine and relaxed.
  2. 2.Expose and prep the skin (clean, dry; clip hair if needed for adhesion).
  3. 3.Place limb leads on the limbs and precordial leads V1–V6 in the correct positions.
  4. 4.Confirm the patient is still and not talking.
  5. 5.Acquire the tracing; check quality before removing leads.

Correct precordial placement

  • •V1: 4th intercostal space, right sternal border.
  • •V2: 4th intercostal space, left sternal border.
  • •V4: 5th intercostal space, midclavicular line (place V4 before V3).
  • •V3: midway between V2 and V4.
  • •V5: anterior axillary line, level with V4. V6: midaxillary line, level with V4.

What NOT to do independently

  • •Don’t interpret the EKG; acquire it accurately and give it to the nurse/provider.

Scope note

You acquire a quality tracing; interpretation is the provider’s job.

Red flags to report immediately

  • •If the patient has chest pain or looks unwell while you’re doing the EKG, alert the nurse/provider right away — don’t wait.

Alert now

A symptomatic patient (chest pain) during an EKG is reported immediately so the provider can review it stat.

Documentation tips

  • •Note time of acquisition and any symptoms during the test.

Patient comfort

  • •Reassure that the EKG is painless and quick; warm hands/room reduce shivering artifact.

Checklist

  • Skin prepped; leads placed correctly (V1–V6).
  • Patient still and relaxed.
  • Checked tracing quality before finishing.
  • Reported symptoms during the test.

Knowledge Check Quiz

Disclaimer: This content is for educational purposes only. It is not medical advice, does not replace clinical judgment, and is not a substitute for institutional protocols or certified medical interpreters. No patient health information (PHI) should be entered into this application.