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Seerlinq

Hemodynamic monitoring from a fingertip

Heart failure monitoring without an implant

Seerlinq HeartCore tracks the earliest signal of worsening heart failure, left ventricular filling pressure, from a fingertip, at home.

Talk to our teamSee the evidence

In heart failure care, filling pressure has usually required a catheter or an implanted sensor. HeartCore estimates it from a 4-minute measurement with a finger sensor.

Patient at home on the sofa holding a smartphone showing the Seerlinq telemonitoring platform sign-in screen
  • CE-certified Class IIb under EU MDR
  • Validated against right heart catheterisation
  • ISO 13485 certified quality management
  • Reimbursed in Slovakia and Germany

What Seerlinq does

From early signal to timely treatment

Prediction

See the risk of impending cardiac decompensation early, as filling pressures start to rise.

Personalisation

Adjust treatment to each patient, even before symptoms appear.

Prevention

Act in time to help avoid hospitalisations caused by worsening heart failure.

HeartCore is a non-invasive system for comprehensive heart failure monitoring at home, including the tracking of cardiac filling pressures. It analyses the photoplethysmographic (PPG) signal from a finger sensor connected to the patient's smartphone.

The science

Filling pressure rises first

Based on the pathophysiology of congestion

Cardiac filling pressures rise before congestion develops and symptoms appear, often up to 4 weeks earlier.

Pressure-guided heart failure therapy

Detecting worsening cardiac function early allows timely, individualised treatment adjustments, before symptoms appear.

Left ventricular filling pressure over time

-30-20-100DaysGradual increasein cardiac fillingpressuresAutonomicadaptationChange inthoracicimpedanceGradualweight gainSymptomonsetHospitalisation
Figure 1: Pathophysiology of congestion. Adapted from: Adamson, PB, 2009.

How it works

Four minutes at home, every other day

  1. 01

    Measure at home

    The patient places a finger in the Seerlinq pulse oximeter, connected to the smartphone app: two minutes standing, then two minutes lying down. No healthcare professional needs to be present.

  2. 02

    HeartCore analyses the signal

    Our certified algorithm checks signal quality and derives Seerlinq LVFP, a non-invasive estimate of left ventricular filling pressure, from how the PPG signal responds to the change in posture.

  3. 03

    Clinicians act early

    The care team sees trends and alerts in the Seerlinq telemonitoring platform, alongside symptoms, weight, blood pressure and heart rate, and can adjust treatment early.

The Seerlinq telemonitoring platform: filling-pressure trend with alert zones, heart rate and the care team's interventions.

Evidence

Validated against the gold standard

0.96
ROC AUC against right heart catheterisation
0.88
ROC AUC against echocardiography
4 min
home measurement, every other day
IIb
CE-certified medical device class under the EU MDR

ROC AUC for classifying left ventricular filling pressure as elevated or not elevated (21 patients with right heart catheterisation, 109 with echocardiography). Source: Böhm et al., JACC: Heart Failure, 2026.

Publications

All publications

Published case reports

Caught early, treated in time

Two cases from heart failure care in Slovakia, published as clinical case reports. Patient details are anonymised.

Published case report

Woman, 77

A medication mix-up, caught early

Two to three weeks after a change to her treatment, HeartCore showed she was getting worse. The cause: she was taking the wrong dose.

Published in Bratislava Medical Journal, 2025

Read the case report

Published case report

Woman, 99

A hidden thyroid problem behind worsening heart failure

HeartCore confirmed her heart failure was getting worse. Further tests found the cause: an overactive thyroid.

Published in European Journal of Case Reports in Internal Medicine, 2025

Read the case report

Patients

In their words

“Five minutes every morning, and my doctors are watching. It kept me out of hospital.”

Roman Šelemba, 61

Contact

Let’s talk

Run a pilot in your department, explore a partnership, or ask about the evidence.

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