What you're not seeing on a 12-lead ECG

Why right‑sided and posterior MIs demand a clear view, quickly

Every minute matters when a patient presents with chest pain. You trust the 12-lead ECG because it’s been the standard for decades. But what if the information you need most—the information that could change treatment decisions, transport pathways and outcomes—is the very thing you can’t see?

Standard 12-lead ECGs provide a valuable first look at cardiac activity, but they don’t tell the whole story. Critical regions of the heart, including the right ventricle and posterior wall, are not directly visualized.¹

And when ischemia hides there, the consequences can be significant.

Posterior myocardial infarctions are often subtle and can be difficult to distinguish from other conditions without additional leads.² Right ventricular involvement, especially in inferior wall MIs, can influence how patients respond to medications, fluids and reperfusion strategies.^3,4 Without clear visualization, clinicians often rely on indirect signs, including ST-segment changes that can be challenging to identify in practice.^1,2

The result can be delayed cath lab activation, missed or delayed STEMI recognition and treatment decisions made with incomplete information.^2,5,6

Now imagine a different scenario.

Imagine having immediate access to right-sided and posterior views of the heart—without relocating existing leads or securing a second ECG. Imagine identifying a posterior MI early enough to support appropriate triage decisions, cath lab activation and transport to definitive care.⁵ Imagine more clearly determining whether right ventricular involvement should inform your approach to nitrates, beta-blockers or fluid resuscitation.^2,3

This is where integrated 15-lead ECG capability comes in.

By enabling direct visualization of areas long considered blind spots, a 15-lead ECG may provide a more complete picture of myocardial ischemia when decisions matter most.

When lives depend on you, confidence matters. In the emergency department. In prehospital care. In every handoff where seconds count and assumptions can be costly.

The LIFEPAK 35 monitor/defibrillator was designed to meet this challenge. With integrated 15-lead ECG capability and clear on-screen labeling, it allows clinicians to capture additional views quickly, without relocating existing leads or securing a second ECG.

This white paper explores the clinical gaps associated with traditional 12-lead ECGs, the real-world implications of missed right-sided and posterior MIs, and how expanded cardiac visualization may support triage and treatment decisions.⁶

If you believe better visibility can support better decisions, and better decisions can help improve patient care, this is a perspective you don’t want to miss.

Download the white paper to see what a fuller view of the heart can reveal.