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ECG Data Acquisition and Display:
ECG Measurements:
Standard 12-Leads : I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6 Frank XYZ possible.
Patient Information : First Name, Last Name, Date-of-Birth, Age, Race, Gender, Height, Weight
Global ECG Measurements : Heart-Rate ( bpm … mean, median and SD ) RR-intervals (mean, median, SD and coefficient of variability) P – QRS – T Axes ( degrees ) P-duration ( msec ) PR-interval ( msec ) QRS-duration ( msec ) ST-segment ( msec ) T-wave duration ( msec ) QT-interval ( msec ) Corrected QT-interval ( msec )
Global Markers : P-onset / P-offset ( for Averaged Leads Display ) QRS-onset ( E-point ) / QRS-offset ( J-junction ) T-onset / T-offset
Interpretation : 1 – 20 lines of Computer-Generated Interpretation + overall findings ( NORMAL ECG / ABNORMAL ECG / etc… )
12-Lead ECG : P-wave Amplitude ( uV ), Area –and- Duration ( msec ) Measurement Matrix P’-wave Amplitude ( uV ), Area –and- Duration ( msec ) ( measures for each Lead ) P’’-wave Amplitude ( uV ), Area –and- Duration ( msec ) Q-wave Amplitude ( uV ), Area –and- Duration ( msec ) R-wave Amplitude ( uV), Area –and- Duration ( msec ) R’-wave Amplitude ( uV ), Area –and- Duration ( msec ) R’’-wave Amplitude ( uV), Area –and- Duration ( msec ) S-wave Amplitude ( uV ), Area –and- Duration ( msec ) S’-wave Amplitude ( uV ), Area –and- Duration ( msec ) S’’-wave Amplitude ( uV ), Area –and- Duration ( msec ) T-wave Amplitude ( uV ), Area –and- Duration ( msec ) T’-wave Amplitude ( uV ), Area –and- Duration ( msec ) T’’-wave Amplitude ( uV ), Area –and- Duration ( msec )
12-Lead ST Measurements: ST0 (QRS-offset … J-junction) Amplitude ( uV ) and slope ( measures for each Lead ) ST+20ms, ST+40ms.ST+60ms, ST+80ms Amplitude ( uV ) and slope ST-4 Blomqvist, ST-4 Simoons Amplitude ( uV ) and slope ST-MID Amplitude ( uV ) and slope ST-END Amplitude (T-Wave onset) ( uV ) and slope User-defined ST offset (0-120 ms) Amplitude ( uV ) and slope Overall Best-Fit Linear Slope ST-segment Concavity and Convexity
Individual Lead Measurements: Onset/Offset Isoelectric region durations (msec) P-QRS-T complex Areas (Positive, Negative, Net, Absolute) P-QRS-T complex Peak-to-Peak Amplitudes ( uV ) T-wave Kurtosis (Peakedness)
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Research for life. |
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Diagnostic and Prognostic Interpretation: Automated Test Interpretation: · Available for both ECG and Cardiopulmonary (CPX) exercise tests · Generates reports automatically and instantly · Constantly updated with latest research findings · Simple, intuitive user interface · Extensive and automatic data validation · Provides secure archiving and retrieval of patient data · Web-based, global availability · Meets or exceeds HIPAA security requirements · No downloads or special system requirements · Exclusive offering by Sunnyside Instruments
The outcomes are stratified into low, intermediate and high risk for any coronary artery disease. This approach has a sensitivity and specificity for any CAD of 85% and 92%, respectively. Overall, a predictive accuracy of 88% is obtained by using EXTRA and this scoring strategy. These are results typically seen only with more expensive imaging modalities such as Stress Echo, Thallium/SPECT testing and Electron-Beam CT.
This approach effectively limits the usage of these more expensive imaging modalities to one-third of patients and excludes the need for cardiac catheterization in another one-third of the patients. Also, these results could frequently prevent the need for cardiac catheterization. Ultimately improving the standard of care and ones quality of life.
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Interpretation module currently available in the U.S. |
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Test Modality |
Any CAD Sensitivity |
Any CAD Specificity |
Predictive Accuracy |
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Standard Exercise ECG |
68% |
77% |
73% |
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Thallium Scintillography |
85% |
85% |
85% |
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SPECT |
88% |
72% |
80% |
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Adenosine SPECT |
89% |
80% |
85% |
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Exercise ECHO |
84% |
75% |
80% |
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Dobutamine ECHO |
88% |
84% |
86% |
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Dobutamine Scintillography |
88% |
74% |
81% |
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EBCT |
60% |
70% |
65% |
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EXTRA + Score Strategy |
85% |
92% |
88% |