Nanostim
Model S1DLCP | Abbott Medical | Leadless pacemaker
Models with the same MRI conditions
S1DLCP
The MRI conditions shown are based on the manufacturer's official guidelines.
Do not apply them to models not listed above; search for that model separately. Search models →
MR Conditional
Important alert
- Do not scan: Abandoned hardware, including leads, lead extenders, or lead adaptors
- Do not scan: Impedance measurements are out of typical range. The typical range is 250-2000 Ω
- Do not scan: Unstable capture thresholds or capture threshold values of > 2.5 V at a pulse width of 0.5 ms
- Do not scan: Complaints of diaphragmatic stimulation at a pacing output of 5.0 V and at a pulse width of 1.0 ms in patients whose device will be programmed to an asynchronous pacing mode when MRI settings are enabled
- Do not scan: Positioning patients on their side (lateral recumbent) within the MRI bore (because this has not been tested)
1Pre-scan checks
- Review the patient's ID card and Parameter printout (generated by the Nanostim Programmer Link) to obtain the model number of the device.
- Confirm with a previous x-ray to verify that the patient has a Nanostim leadless pacemaker. An x-ray can also indicate whether the patient has any additional active or abandoned implanted hardware.
- Patients can be considered safe for an MRI scan only if the implanted system consists of a Nanostim MRI Leadless Pacemaker.
- Consult the patient's device management physician or clinician, or review the printout of the MRI parameters provided by them.
2MRI scan conditions
1.5 T
| Scanner type | Horizontal Cylindrical Bore |
|---|---|
| Spatial gradient | 19 T/m maximum |
| Gradient slew rate | ≤200 T/m/s |
| Whole-body SAR | ≤4 W/kg (First Level Controlled Mode) |
| Head SAR | ≤3.2 W/kg |
| Scan region / position conditions | Scan Regions: Full Body |
3RF COIL / RF excitation
| RF coil | • Type of coil: Anywhere - body transmit coil, local receive-only coils.• Local transmit/receive coils: head coil: Quadrature only, normal operating mode.• Local transmit/receive coils: lower extremity coil: Quadrature only, safe for all extremities except the hip, normal operating mode.• Local transmit/receive coils: upper extremity coil: Quadrature only, safe for wrist area, normal operating mode.• Only quadrature, birdcage coil designs have been tested. Do not use other transmit coils designs (e.g., linear, phased-array, or saddle) because these have not been tested. |
|---|
4Monitoring & emergency response
- Proper patient monitoring must be provided during the MRI scan. This includes continuous monitoring of the patient's hemodynamic function.
- Since the MR environment may interfere with the patient monitoring system, it is recommended that more than one of the following systems be used: electrocardiography, pulse oximetry, noninvasive blood pressure measurements.
- If the patient's hemodynamic function is compromised during the MRI scan, discontinue the MRI scan and take the proper measures to restore the patient's hemodynamic function.
- Verbal communication with the patient during the MRI scan is recommended.
- Keep an external defibrillator available during the MRI scan.
5Post-scan checks
- The original pacemaker settings must be reprogrammed by the patient's device management physician or clinician.
6Other information
- Do not bring the Merlin™ Patient Care System (PCS) Model 3650 or the Nanostim Programmer Link Model S1LINK into Zone IV (MR scanner magnet room), as defined by the American College of Radiology. These devices are MR Unsafe.
- Image distortion can result from the presence of the device within the field of view. Image artifacts and distortion resulting from the presence of the device within the field of view must be considered when selecting the field of view and imaging parameters. These factors must also be considered when interpreting the MRI images.
- Patients may feel a mild tugging or vibration sensation at the site of the device implant while in or near the MRI scanner.
These conditions are based on the source document shown below (revision and date). Before scanning, verify the patient's complete system (device, leads, and any other implants) against the latest manufacturer labeling.