| Model | G70A1 |
| Size (HxWxD mm) | 44.7x47.9x7.5 |
| M (g) | 27.1 |
| V (cc) | 12.1 |
| Connector | IS-1 BI or UNI |
| Radiopaque ID | VG |
| Battery | |
| Type | Lithium-iodine |
| Voltage | 2.8 V |
| Average projected capacity | 1.3 Ah |
| Longevity | |
| with Reduced VP™+ off | 11.3 years* |
| with Reduced VP™+ on | 12.0 years** |
Programmable Parameters
| Parameter Name | Range | Nominal Value |
| Pacing Modes | DDDR, DDD, DDIR, DDI, DVIR, DVI, DOOR, DOO, VDD, VVIR, VDIR, VVI, VDI, VVT, VOOR, VOO, AAIR, ADIR, AAI, ADI, AAT, AOOR, AOO, ODO, OVO, OAO | DDDR |
| Mode Switch | On, Off | On |
| Lower rate | 30, 35, 40…60…170, 175 ppm (exc. 65, 85) | 60 ppm |
| Upper Tracking Ratea | 80, 90, 95…130…180 ppm | 130 ppm |
| Upper Sensor Rate | 80, 90, 95…130…180 ppm | 130 ppm |
| A and RV Pulse Amplitudeb | 0.5, 0.75, 1.0…3.5…4, 4.5, 5, 5.5, 6, 7.5 V | 3.5 V |
| A and RV Pulse Width | 0.12, 0.15, 0.21, 0.27, 0.34, 0.4, 0.46, 0.52, 0.64, 0.76, 1, 1.25, 1.5 ms | 0.4 ms |
| Atrial Sensitivity | 0.18, 0.25, 0.35, 0.5, 0.7, 1, 1.4, 2, 2.8, 4 mV | 0.5 mV |
| Ventricular Sensitivity | 1, 1.4, 2, 2.8, 4, 5.6, 8, 11.2 mV | 2.8 mV |
| Pacing Polarity (A and V) | Bipolar, Unipolar, Configure | |
| Sensing Polarity (A and V) | Bipolar, Unipolar, Configure | |
| Paced AV (PAV) | 30, 40, 50…150…350 ms | 150 ms |
| Sensed AV (SAV) | 30, 40, 50…120…350 ms | 120 ms |
| PVARP | Auto, Varied, 150, 160, 170…500 ms | Auto |
| Minimum PVARP | 150, 160, 170…250…500 ms | 250 ms |
| PVAB | 130, 140, 150…180…350 ms | 180 ms |
| Atrial Refractory Period | 180, 190, 200…250…500 ms | 250 ms |
| Atrial Blanking Period | 130, 140, 150…180…350 ms | 180 ms |
| Ventricular Refractory Period | 150, 160, 170…230…500 ms | 230 ms |
| Ventricular Blanking (after atrial pace) (PAVB) |
20, 28, 36, 44 ms | 28 ms |
| Therapies to promote intrinsic activation | ||
Reduced VP™+
|
On, Off 10, 20, 30…170…250 ms |
On |
Sinus Preference™
|
On, Off
|
On 10 ppm |
Sleep
|
On, Off 30, 35, 40…50…90 ppm (exc. 65, 85) 00:00, 00:15, 00:30…22:00…23:45 00:00, 00:15, 00:30…8:00…23:45 |
Off 50 ppm 22:00 8:00 |
| Single Chamber Hysteresis | Off, 40, 50, 60 ppm | |
Rate Response Pacing
| Parameter Name | Range | Nominal Value |
| ADL Rate | 60, 65, 70…95…175, 180 ppm | 95 ppm |
| Rate Profile Optimization | On, Off | On |
| ADL Response | 1, 2, 3, 4, 5 | 3 |
| Exertion Response | 1, 2, 3, 4, 5 | 3 |
| Activity Threshold | Low, Medium Low, Medium High, High | Medium Low |
| Acceleration | 15 s, 30 s, 60 s | 30 s |
| Deceleration | 2.5 min, 5 min, 10 min, Exercise | Exercise |
| RAAV | On, Off | Off |
| Start Rate | 50, 55, 60…80…175 ppm | 80 ppm |
| Stop Rate | 55, 60, 65…120 … 180 ppm | 120 ppm |
| Maximum Offset | -10, -20, -30…-40 …-300 ms | -40 mms |
Rate Drop Response
| Parameter Name | Range | Nominal Value |
| Detection Type | Low Rate, Drop, Both, Off | Off |
| Intervention Rate | 60, 70, 75, 80…100…180 ppm (exc. 65, 85) |
100 ppm |
| Intervention Duration | 1, 2, 3…15 min | 2 min |
| Detection Beats | 1, 2, 3 beats | 2 beats |
| Drop Rate | 30, 40, 50…100 ppm | 50 ppm |
| Drop Size | 10, 15, 20, 25…50 ppm | 25 ppm |
| Detection Window | 10, 15, 20, 25, 30 s; 1, 1.5, 2, 2.5 min | 25 s |
Additional pacing features
| Parameter Name | Range | Nominal Value |
| PMT Intervention | On, Off | Off |
| PVC Response | On, Off | On |
| Ventricular Safety Pacing | On, Off | On |
| Parameter Name | Range | Nominal Value |
| Mode Switch | On, Off | On |
| Detected Rate | 120, 125…175…200 ppm | 175 |
| Detect Duration | No Delay, 10, 20…60 sec | No Delay |
| Blanked Flutter Search | On, Off | On |
| Atrial Preference Pacing (APP) parameters | ||
| APP | On, Off | Off |
| Maximum Rate (bpm) | 80, 90, 95, 100...150 | 100 |
| Interval Decrement (ms) | 30, 40, 50...100, 150 | 30 |
| Search Beats | 5, 10...20, 25, 50 | 20 |
| Post Mode Switch Overdrive Pacing (PMOP) parameters | ||
| PMOP | On, Off | Off |
| Overdrive Rate (ppm) | 70, 75, 80, 90, 95…120 | 80 |
| Overdrive Duration (min) | 0.5, 1, 2, 3, 5, 10, 20, 30, 60, 90, 120 | 10 |
| Conducted AF Responseb | ||
| Regularize V-V during AT/AF | On, Off | Off |
| Maximum Rate (ppm) | 80, 85, 90…110…130 | 110 |
| Non-Competitive Atrial Pacing | On, Off | On |
Implant Detection and Initialization
At the completion of the 30-minute Implant Detection period, Rate Profile Optimization is enabled; the appropriate pacing and sensing polarities are automatically selected by the device; Atrial and Ventricular Output Management is enabled and Amplitude and Pulse Width become adaptive. Sensing Assurance™ is enabled and Sensitivity becomes adaptive. Reduced VP™+ is enabled 60 minutes after Implant Detection is complete.
| Implant Detection | On/Restart, Off/Complete |
| Lead Monitor (A and V) | Configure, Monitor Only, Adaptive (Auto Polarity Switch), Off |
| Parameter Name | Range | Nominal Value |
| Notify If < | 200 Ω | 200 Ω |
| Notify If > | 1000, 2000, 3000, 4000 Ω | 4000 Ω |
| Monitor Sensitivity | 2, 3, 4 … 8 … 16 | 8 |
Atrial Output Management
| Parameter Name | Range | Nominal Value |
| Atrial Output Management | Off, Monitor Only, Adaptive | Adaptive |
| Amplitude Margin | 1.5x, 2x, 2.5x, 3x, 4x (times) | 2x |
| Minimum Adapted Amplitude | 0.5, 0.75…1.5…3.5 V | 1.5 V |
| Capture Test Frequency | 1, 2, 4, 8, 12 hours; Day at rest; Day at…; 7 days at | |
| Capture Test Time | 00:00, 1:00…23:00 | 1:00 |
| Acute Phase Days Remaining | Off, 7, 14, 21…84, 112, 140, 168… 252 days | 112 days |
Ventricular Output Management
| Parameter Name | Range | Nominal Value |
| Ventricular Output | ||
| Management | Off, Monitor Only, Adaptive | Adaptive |
| Amplitude Margin | 1.5x, 2x, 2.5x, 3x, 4x (times) | 2x |
| Minimum Adapted Amplitude | 0.5, 0.75…2…3.5 V | |
| Capture Test Frequency | 15, 30 min; 1, 2, 4, 8, 12 hours; Day at rest; Day at…; 7 days at | Day at rest |
| Capture Test Time | 00:00, 1:00…23:00 | |
| Acute Phase Days Remaining | Off, 7, 14, 21…84, 112, 140, 168… 252 days | 112 days |
| V. Sensing During Search | Unipolar, Bipolar, Adaptive | Adaptive |
Sensing Assurance
| Parameter Name | Range | Nominal Value |
| Sensing Assurance (A and V) | On, Off | On |
Cardiac Dashboard II
Highlights significant events, AT/AF and pacing summary, threshold
and impedance trends
Atrial and ventricular pacing threshold trends
Battery longevity
Pacing summary and access to rate histogram
Atrial and ventricular lead impedance trends
Number of hours/day in atrial arrhythmia, percentage of time
Access to atrial arrhythmia diagnostics
Observations
P-wave/R-wave amplitudes and access to A and V sensitivity trends
AT/AF compass trends
Trend data compiles up to 6 months of daily clinical information in an
easy-to-interpret graphic format
Histogram reports
Heart rate histograms
AV conduction histograms
Reduced VP™+ histogram
Sensor indicated rate profile
Atrial and ventricular episodes
Atrial and ventricular high rate episodes
Ventricular rate during AT/AF
AT/AF durations
Multiple EGM episodes
Rate drop response episodes
Clinician selected diagnostics
Custom rate trend
Rate drop response detail
Atrial output management detail
Ventricular Output Management detail
Atrial and ventricular high rate detail
Patient data stored in device
Patient identification
Leads implanted
Device implanted
Clinician’s stored notes
Data management
Automatic printing of initial interrogation report
Full page printing
Save-to-Disk capacity for electronic file management
| Transtelephonic monitor | On, Off |
| Extended telemetry | On, Off |
| Extended marker | Standard, Therapy Trace |
Key parameter history
Initial interrogation report
Strength duration threshold test
Ventricular threshold test
Marker Channel™
Threshold margin test
Exercise test
EP studies
Magnet test
Underlying rhythm test
Sensing test
Temporary test
Magnet mode operation
| BOS | ERI/RRT | |
| Dual chamber mode | DOO 85 ppm | 65 |
| Single chamber atrial mode | AOO 85 ppm | 65 |
| Single chamber ventricular mode | VOO 85 ppm | 65 |
| ERI-RRT | Initiation Date |
Recommended Replacement Time (RRT/ERI) |
|
| Replacement message on programmer (Cardiac Dashboard II) | |
| Battery/lead information | Replacement message and displayed battery voltage on programmer |
| RRT/ERI initiation date | Displayed on programmer |
*DDDR or DDD, 60 ppm, 100% pacing, ventricular 2.0 V and atrial 1.5 V (AOM and VOM minimum adapted values at out-of-box settings), 0.4 ms pulse width, 1000 Ω pacing impedance, prearrythmia EGM storage ON for 8 weeks per year
**Reduced VP™+ ON 50% pacing
a The atrial and ventricular rate limit is 200 min-1 (± 20 min-1).
b Tolerance for amplitudes from 0.5 V through 6.0 V is ± 10%,
and for 7.5 V is -20/+0%. Tolerances are based on 37° C and a
500 Ω load. Amplitude is determined 200 μs after the leading
edge of the pace.
c Conducted AF response is functional during Mode Switch episodes,
DDIR, VVIR, and VDIR modes.