How to set up cardiac monitoring (3- and 5-lead)
Other platforms explain it with text and video. In Making Synapses you practice it on the patient.
Correct placement gives clean tracings and fewer false alarms.
Step by step
Skin
Clean, dry, clip hair; fresh electrodes. [1]
3-lead
White under the right collarbone, black under the left collarbone, red on the left lower chest. [1]
5-lead
Add green on the right lower chest and brown at the V1 position (or as needed). [1]
Choose a lead
Lead II for rhythm; one with clear P waves. [1]
Alarms
Set limits for this patient; never turn them off. [2]
Change
Electrodes daily or per policy. [1]
Common errors
- Electrodes over bone.
- Default alarms for everyone.
- Old electrodes.
Practice it in Making Synapses
In Making Synapses you do this on the patient, not on paper: every step goes on the checklist with a score, and in Teach mode Blocky tells you what comes next.
Making Synapses cases that train this skill
- Chest pain, STEMI
- Pulmonary embolism after DVT
- Gastroesophageal reflux
- Tension pneumothorax
- Nausea and vomiting, inferior MI hidden
- Stimulant overdose
20 Making Synapses cases train this skill: open the case library
Sources
- OpenStax, Clinical Nursing Skills (reference)
- The Joint Commission, National Patient Safety Goals
- Open RN, Nursing Skills 2e (Chippewa Valley Technical College) (CC BY 4.0)
Steps adapted from Open RN, Nursing Skills 2e (Chippewa Valley Technical College), licensed under CC BY 4.0. Facts and steps also follow OpenStax, Clinical Nursing Skills (reference). Making Synapses is not affiliated with these organizations. Updated: 2026-10-11.