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    Cardiac Implantable Device Related Complications
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    It was 50 years since cardiac pacemaker used in clinic. Keeping the heart rhythm regular, the hydrodynamics stable and the blood circulation normal are the most essential functions of cardiac pacemaker. People are always making their efforts to gain the best physiological effects from optimizing different pacing modes, which include atrioventricular synchronization, cardiac chronotropic pacing and ventricular synchronization, ect. Obviously, these optimized pacing mode make the cardiac pacemaker more effectively used in clinic.
    Cardiac pacemaker
    Cardiac Pacing
    Heart Rhythm
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    RAO, A., et al. : Unexpectedly High Defibrillation Thresholds in an Active Can Implantable Cardioverter Defibrillator System. This case report describes a patient undergoing defibrillator generator replacement in whom the defibrillation thresholds were significantly higher with a can‐active system than with a non‐active can system.
    Defibrillation threshold
    Currently, cardiac MRI is contraindicated in patients with an implanted pacemaker or ICD due to safety hazards. However, MRI is promising to play a key role in cardiac diagnostics in near future. This study examined a rat with an implanted pacemaker pacing at a rate of 460/min with high field cardiac MRI. This study showed that pacing during cardiac imaging at 7 Tesla was possible. The pacemaker program was not disturbed by the high field or the strong gradients (maximum dB/dt 400 mT/s). The only noticeable effect on the MRI signal was a signal void of 2 cm around the device. (PACE 2004; 27:671–674)
    Cardiac magnetic resonance
    Objective:To investigate the phychological state of patients before permanent cardiac pacemaker implantation,analyze the reason and give intervention.Methods:The phychological state of 22 patients before permanent cardiac pacemaker implantation was evaluated with questionnaire and all was given psychological guidance timely.Results:It was necessary to carry out and enhance the cardiac pacemaker knowledge popularization,and provide a good mental nursing to patients before the implantation,in order to release the anxiety and cooperate with the operation.Conclusion:The effective communication with the patients before implantation could render them cooperate with the it,therefore,decrease the complications of the operation.
    Cardiac pacemaker
    Permanent pacemaker
    Cardiac Pacing
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    Cardiac Pacing
    Cardiac pacemaker
    Ventricular pacing
    Artificial cardiac pacemaker