The signal-averaged electrocardiogram (SAECG) facilitates noninvasive recording of low-amplitude cardiac signals such as ventricular late potentials. The SAECG has been used to predict lifethreatening ventricular tachyarrhythmias in patients after acute myocardial infarction and with nonischemic dilated cardiomyopathy and to screen for inducible ventricular tachycardia in patients with unexplained syncope and with nonsustained ventricular tachycardia. This technical information report focuses on currently accepted methodology and clinical applications of the SAECG.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | Blank Page <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | TIR23, Signal Averaging <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | Copyright Page <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | About AAMI Technical Information Reports <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Table of Contents <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Committee representation <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3 State of the art of current SAECG device design 3.1 Introduction 3.2 Architecture <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3.3 Comparative table of specifications <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 3.4 Summary of beat alignment and measurement methods 4 Selection and alignment of normal sinus rhythm beats for ensemble averaging 4.1 Overview 4.2 Selecting a normal sinus rhythm beat as a “template” <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3 Beat alignment techniques 4.4 Rejecting nonsinus rhythm beats 5 Ensemble averaging 5.1 Overview <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.2 Endpoint of signal averaging: quality control 5.3 Rejection of adversely noisy beats 6 SAECG analysis: digital filtering, lead combination, and measurements 6.1 \tOverview <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.2 Digital filtering schemes 6.3 Butterworth IIR filter, applied in a bidirectional mode 6.4 Spectral window filter 6.5 FIR filter 6.6 Lead combination: vector magnitude waveform <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6.7 SAECG measurements of late potentials 7 Clinical applications of SAECG 7.1 SAECG methodology <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 7.2 Clinical application of the SAECG 7.2.1 Predischarge risk stratification after acute MI <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 7.2.2 Using the SAECG in combination with other noninvasive test results to predict serious ventricular arrhythmias after MI <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 7.2.3 Clinical limitations of the SAECG after MI <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7.2.4 Interaction of invasive risk stratification with programmed ventricular stimulation and the SAECG <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 7.2.5 The clinical utility of the SAECG in the thrombolytic era <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7.2.6 Prognostic value of the SAECG in patients with idiopathic dilated cardiomyopathy or with advanced heart failure <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.2.7 Predicting electrically induced ventricular tachycardia in the electrophysiology laboratory of patients with unexplained syncope <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.2.8 Predicting inducibility of sustained VT in patients with nonsustained VT <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 8 Emerging areas in signal-averaged ECG 8.1 Frequency domain analysis 8.2 P-wave signal-averaging and analysis methods <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 8.3 Application of P-SAECG to measurement of atrial activation <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex A, Cited references <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Annex B, Additional reading <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AAMI TIR23:1999\/(R)2019 – Signal averaging<\/b><\/p>\n |