1. ELI 350 Late Potential
Ron Amero
January 2010
Features and Benefits

2. Key Benefits What Are Late Potentials (SAECG) Late Potential Detection
ACC and AHA Statements and Guidelines
Late Potential Criteria
Late Potential Hookup and Report

3. ELI 350™ What is Late Potential
Signal Averaged ECG
High Resolution ECG
Late Potential Analysis

4. SAECG
More than 400,000 sudden cardiac deaths occur each year (US) caused by sustained ventricular tachycardia or ventricular fibrillation.
Coronary heart disease accounts for 80% of Sudden Cardiac Death (SCD) in developed countries throughout North America and Europe.
Results of clinical studies implicate reentrant mechanisms as the cause for these critical arryhthmias
Most result from tachyarrhythmias arising from chronic scaring in the myocardium usually seen in post MI patients with decreased left ventricular function.

5. Key Benefits What Are Late Potentials (SAECG) Late Potential Detection
ACC and AHA Statements and Guidelines
Late Potential Criteria
Late Potential Hookup and Report

6. Late Potential Diagnosis and Detection
Useful tool in the diagnosis of patients who have one or more of the following symptoms:
ischemic heart disease (decreased O2 to the heart tissue)
unexplained syncope (blackout or fainting)
Useful in pre-operative patient assessment
May eliminate possibilities of sustained ventricular tachycardia
Useful in providing risk stratefication
Patients recovering from myocardial infarction may time increase the chances of cardiac arrythmias as the heart strengthens.

7. Key Benefits What Are Late Potentials (SAECG) Late Potential Detection
ACC and AHA Statements and Guidelines
Late Potential Criteria
Late Potential Hookup and Report

8. ACC Statement of Benefits

9. ACC / AHA Guidelines

10. Key Benefits What Are Late Potentials (SAECG) Late Potential Detection
ACC and AHA Statements and Guidelines
Late Potential Criteria
Late Potential Hookup and Report

11. Late Potential Criteria
Suggested Settings
High pass filter setting 40 – 250 HZ
Average 250 beats... or to 9999 if needed
To noise level of .3 µV
Correlation threshold set to Very High
Interpretation
Positive = abnormal
Risk goes from low to moderate to high when one, two, three criteria are met
Filtered QRS-duration > 120 ms
Duration of HFLA > 38 ms
RMS voltage in terminal 40 ms < 20 µV

12. Key Benefits What Are Late Potentials (SAECG) Late Potential Detection
ACC and AHA Statements and Guidelines
Late Potential Criteria
Late Potential Hookup and Report

13. Late Potential Hookup Late Potential: Signal Averaged ECG (SAECG)
Bipolar (X, Y and Z) orthogonal leads are used to measure the sum of the heart’s electrical activity in three-dimensional space throughout the cardiac cycle to indicate the potential for ventricular arrhythmias.
Offers flexible selections for filter frequency, target beat count, and acceptable target noise level.
Simple user interface and quick analysis of data.

14. ELI 350 Late Potential Report

15. ELI 350 Late Potential
QUESTIONS?