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XRAY CARDIAC SPACEMAKER
Process:
- Patient Evaluation:
Obtain a detailed medical history, including the type, model, and
manufacturer of the pacemaker.
Confirm MRI-conditional status of the pacemaker system (device and
leads).
Assess the clinical need and justify the MRI scan.
- Device Check:
Involve a cardiologist or a pacemaker specialist to evaluate the device.
Program the pacemaker to MRI-safe mode if applicable (e.g., asynchronous
mode or disable certain features).
- Preparation:
Ensure emergency equipment (defibrillator, monitoring devices) is
available.
Establish continuous monitoring of the patient’s heart rhythm, oxygen
saturation, and vital signs.
Educate the patient about the procedure and obtain informed consent.
- MRI Protocol:
Use a low SAR (Specific Absorption Rate) protocol to minimize heating.
Select the imaging parameters with reduced RF exposure and gradient
strength.
Avoid sequences with high dB/dt (e.g., avoid fast spin-echo sequences).
- Scanning:
Position the patient comfortably with the region of interest in the
scanner.
Maintain communication with
the patient throughout the scan.
Monitor for any signs of discomfort or arrhythmia.
- Post-MRI Care:
Recheck the pacemaker function and reprogram it to the original
settings.
Observe the patient for a short period post-scan for any delayed
reactions.
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| MRI CARDIAG SPACEMAKER |
Precautions:
- Device Compatibility:
Only proceed if the pacemaker is MRI-conditional and the MRI system is
compatible.
- Field Strength:
Limit the MRI field strength to ≤1.5 Tesla unless specified safe by the
device manufacturer.
- Monitoring:
Continuous ECG monitoring during the entire procedure is crucial.
- Temperature Management:
Minimize RF exposure to prevent heating of the leads.
- Emergency Protocols:
Have resuscitation equipment and trained personnel readily available.
- Patient Feedback:
Provide a squeeze bulb or emergency call system to communicate during
the scan.
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