When the trace does not resolve the question

When the ECG is reassuring, but the patient is not.

Every primary care physician knows this patient. Symptoms persist. The ECG appears normal. Yet the clinical picture still does not feel reassuring.

The challenge is not reading the trace. It is deciding whether the patient can remain in primary care, or whether further cardiac investigation is needed.

See the Clinical Case

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+90%Echo-agreement rate¹ — high correlation with Simpson Biplane LVEF measurements

94%Fewer inconclusive ECGs² — eliminates “borderline” results that cause diagnostic delays

160%More confirmed diagnoses² — identifies structural disease missed by standard ECG

“I replaced my standard ECG with Cardio-HART. I’ve come to trust it to the point that I cannot ignore it. What it detects, the echo confirms.”

Dr Teresa Castiello — Cardiology President, Royal Society of Medicine (2023–2025)

1 In 70% of cases agreement is >90%; in an additional 25% agreement ranges between 75–90%.
2 Source: Cardio-Phoenix Multicentre Study (2022); validation results presented at ESC-HFA 2023; peer-reviewed in European Heart Journal: Digital Health (2023).

The clinical gap

More uncertainty often begins after the ECG.

A reassuring ECG may not explain persistent symptoms, cardiovascular risk factors or the clinician’s concern. The next step still has to be decided, often before echocardiography is available.

Symptoms remain unexplainedShortness of breath, fatigue, chest discomfort or reduced exercise tolerance may still require further assessment.

Referral decisions remain difficultRefer too broadly and services become overloaded. Refer too late and significant disease may be missed.

Echocardiography is not always immediateClinicians may need to act while the patient is still waiting for a more complete cardiac assessment.

Where Cardio-HART adds value

Know more before you refer.

Cardio-HART starts with the familiar 12-lead ECG and adds further cardiac biosignals to provide information about structure and function, with an immediate clinical report.

It is designed to support the next clinical decision, not replace clinical judgement or echocardiography when confirmatory imaging is required.

Performed by trained staff. Immediate results. One structured clinical report.

Can this patient be managed safely in primary care?

Does the patient need echocardiography?

How urgently should the patient be referred?

Is there evidence of structural or functional cardiac disease?

A real clinical case

The ECG appeared reassuring. Cardio-HART changed the clinical picture.

Below is a preview of the same patient assessed in two different ways. Only the first page of the Cardio-HART report is shown.

Standard ECG

ECG findings appeared reassuring

The trace did not explain the patient’s clinical presentation.

Normal 12-lead ECG trace from the clinical case

Electrical activity appeared reassuringThe clinical question remained unresolved.

Cardio-HART report

The first page raised concern

Additional cardiac findings indicated that further investigation was required.

First page of the Cardio-HART report showing HART, MCG, PCG and heart-failure findings

The clinical picture was no longer reassuringThe complete report explains the findings and their referral implications.

What did Cardio-HART identify, and what did echocardiography confirm?
Download the complete case to review the full report and the key findings step by step.

With Cardio‑HART, there’s clarity.

One test. One visit. A structural and functional picture standard ECG cannot provide on its own.

Get the Complete Case

Complete clinical case

Normal ECG. Abnormal Cardio-HART Findings.

A guided clinical report review

A concise, case-based resource for primary care physicians, internists and general cardiologists.

The complete Cardio-HART report

A step-by-step explanation of the key findings

The clinical significance of each finding

Referral implications and priority

The echocardiography-confirmed diagnosis

Designed to be reviewed quickly and used as a practical clinical reference.

Download the full report

See what the ECG did not show.

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Have a clinical or implementation question? Contact the Cardio-Phoenix team.