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Electrophysiology / HeartLogic™ Heart Failure Diagnostic / HeartLogic Case Studies / HeartLogic Enables Proactive Care…

HeartLogic Enables Proactive Care in the Outpatient Setting



HeartLogic™ Heart Failure Index

Contributing Trends

Day 1: VIGILANT™ CRT-D implanted

(A) Day 43: Patient seen by nurse practitioner for follow-up; patient “feels fine” with no heart failure (HF) symptoms

(B) Day 44:HeartLogic alert issued

  • HeartLogic Index is 16
  • Contributing Trends: S3 and S3/S1
HeartLogic Contributing Trends Graph

(C) Day 45: HeartLogic Index is 22.  Patient seen by Interventional Cardiologist:

  • Swelling in right foot
  • Excessive sweating
  • Shortness of breath
  • Furosemide increased (40 mg 3x/day to 4x/day)

(D) Day 54: HeartLogic Index returns to baseline

  • S3 measurements trending down to below 1mG
  • Thoracic Impedance was not a contributing trend and did not detect worsening HF



Clinical Data

trend chart
trend chart


trend chart


thoracic impedence

     Thoracic Impedence

respiratory rate

     Respiratory Rate

Night heart rate

     Night Heart Rate

sleep incline

     Sleep Incline


     Activity Level

Blood pressure

     AT/AF Burden

HeartLogic Trend Graph for V Therapy

     V Therapy

HeartLogic Trend Graph for Mean Heart Rate

     Mean Heart Rate

HeartLogic Trend Graph for Mean Heart Rate

     Heart Rate Variability (SDANN)

LATITUDE® Patient Management - Heart Failure Management Report

LATITUDE Patient Management Heart Failure Management Report
LATITUDE Patient Management Heart Failure Management Report

Next Steps


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Results from the case studies are not necessarily predictive of results in other cases. Results in other cases may vary.