Technical Information
DYNAGEN™ X4 CRT-D
Models G156 and G158
Pacing Therapy
| Brady Modes | Normal: DDD(R), DDI(R), VDD(R), VVI(R), AAI(R), Off
Temporary: DDD, DDI, DOO, VDD, VVI, VOO, AAI, AOO, Off |
| AT/AF Management | ATR Mode Switch, Ventricular Rate Regulation (VRR) - MIN, MED, MAX, Atrial Flutter Response (AFR), PMT Termination, Rate Smoothing |
| Rate Adaptive Pacing | Accelerometer with sensor trending function |
Heart Failure Therapy
| Heart Failure Therapy Optimization | Normal: DDD(R), DDI(R), VDD(R), VVI(R), AAI(R), OffSmartDelay™ (AV Optimization), BiV Trigger, LV Offset, LV Sensing |
| LV Lead Options | Quadripolar LV lead |
| LV Pacing Vector Options | 17 options |
| LV Sensing Vector Options | 8 options plus OFF |
Patient Diagnostics
| Arrhythmia Logbook | Events summary, Stored Electrograms with Annotated Markers, (Intervals and approximately 17 minutes of multichannel EGM, always with 10 seconds Onset and event storage prioritization). Implant activation of all available EGMs. On screen measurement of all stored signal amplitudes and timing |
| Histograms & Counters | Tachy Events and Brady Counters |
| Heart Rate Variability(HRV) | SDANN and HRV Footprint (24 hour heart rate collection period) |
| Daily Trends For Last 365 Days | Events, Activity Level, Atrial Burden, Respiratory Rate, Heart Rate, SDANN, HRV Footprint, Autonomic Balance Monitor (ABM), Lead impedances and amplitudes
To note: Automatic activation of all available daily trends at implant. |
| AT/AF Diagnostics | % Atrial Burden, Daily burden, Average V-rate during ATR Mode Switch Episode |
| Heart Failure Therapy/Diagnostics | HF Perspectiv™ report, Respiratory Rate Trend, Weight, Blood Pressure, Heart Rates, HRV Footprint, SDANN, Atrial Arrhythmia Burden, Activity Level, A & V Arrhythmias, Pacing Histograms
To note: Weight and Blood Pressure are only available via LATITUDE. |
Device Testing/Induction Methods
| Induction Methods | Vfib Induction, Shock on T Induction, Programmed Electrical Stimulation (PES), 50 Hz/Manual Burst Pacing |
| Commanded Therapy Methods | Commanded Shock, Commanded ATP |
Tachyarrhythmia Therapy
| Sensing/Detection | Zones VF only, or VF and VT or VF, VT, VT-1. Lowest Zone can be Monitor Only |
| Shock Reduction and Appropriate Therapy | AcuShock™ Advanced Technology including Onset/Stability™, RhythmID™ with RhythmMatch™, Dynamic Noise Algorithm (DNA) for sensing, Automatic Gain Control (AGC) with programmable sensing floor, Narrow Band Pass Filter |
| Antitachycardia Pacing Therapy (ATP) Termination | Quick Convert™ in VF Zone. Two programmable ATP schemes in both VT and VT-1 zones. Burst, Ramp, Scan, Ramp-Scan |
| Shock Energy | 41 J stored, 35 J delivered. First two shocks in each zone programmable. VT-1 has 5 shocks, VT has 6 shocks and VF has 8 shocks. Reverse Last Shock Polarity in zone. Programmable RV Coil to RA Coil and Can (TRIAD), RV Coil to Can, RV Coil to RA Coil (COLD CAN) |
| Nominals | VF Zone (200 bpm)–Detection: Rate and Duration, Therapy: Quick Convert, 8 high energy shocks
VT Zone (160 bpm)–Detection: RhythmID or Onset/Stability, Therapy: ATP x 2, 6 high energy shocks |
Implant/In-Clinic Follow Up
| Implant Communication Mode | Programmable values: Enable use of ZIP™ telemetry (MICS) (Requires initial use of wand for device ID) or use wand for all telemetry
Nominal: Enable use of ZIP telemetry (Requires initial use of wand for device ID) |
| In Clinic Follow-Up | Wireless ECG |
Remote Follow Up
| Patient Triggered Monitor (PTM) | Triggers the storage of two minutes onset and one minute post - EGMs, intervals, and annotated marker data during a symptomatic episode by placing a magnet over the device |
| Beeper Feature(Patient Alerts) | Beep During Capacitor Charge, Beep when Explant is Indicated, Beep when Lead Impedance measurement(Shock or Pace) is Out-of-Range |
| Magnet Feature | Magnet Response (Off, Store EGM, Inhibit Therapy) |
| Remote Monitoring | This device is designed to be LATITUDE™ enabled; LATITUDE availability varies by region |
| Wireless | Remote follow-up for all devices (MICS) |