The assessment of defibrillation (DFT) efficacy has long been the standard of care during defibrillator implantation. To ensure an acceptable DFT safety margin, early defibrillator systems frequently required that the shock polarity and the location, type, or number of electrodes had to be altered. Advances in defibrillator and lead technology have resulted in lower and more consistent DFT thre...

A major application of the FFT is fast convolution or fast ltering where the DFT of the signal is multiplied term-by-term by the DFT of the impulse (helps to be doing nite impulse response (FIR) ltering) and the time-domain output is obtained by taking the inverse DFT of that product. What is less well-known is the DFT can be calculated by convolution. There are several di erent approaches to t...

Since implantable cardioverter-defibrillators (ICDs) were first introduced, defibrillator threshold (DFT) testing was considered an integral part of the implant procedure. Perform‐ ing DFT testing verifies the ability of the ICD in detecting and aborting the lethal arrhythmia it was designed to treat. The process has evolved with the development of the ICD’s and the expanding indications for th...

BACKGROUND The defibrillation threshold (DFT) may be affected by biphasic shock duration (BSD), electrode configuration, and capacitance. The upper limit of vulnerability (ULV) may be used to estimate the DFT. For different lead configurations and phase 2 capacitances, we investigated in 18 pigs whether the use of ULV may predict waveforms with lowest DFT. METHODS AND RESULTS -DFT and ULV wer...

This paper describes the integration of Design-ForTestibility (DFT) processes, tools, and methodologies into the RASSP System, which consists of the Design Environment and Enterprise System. The blueprint for the DFT developments is the DFT Methodology, which is highly automated, hierarchical, and spans the entire life cycle, contributing significantly to the RASSP goals of 4x improvement in cy...

The basic receive space diversity combining methods, i.e. Maximum Ratio Combining (MRC), Equal Gain Combining (EGC) and Selection Combining (SC), are studied in this work for Preand PostDFT combining wideband multi-carrier receivers. A common system model for both these schemes are devised. The outage and mean capacity and Frame Error Rate (FER) simulations show that Pre-DFT combining technique...