Thursday, October 6, 2011

#AskDrKK:Is MRI Safe for patients on ICD

Fewer than 1% of patients with implanted cardiac devices encounter device-related problems during MRI.
MRI can be used safely in patients with implanted devices.
In a study published in the October issue of Annals of Internal Medicine by Dr Saman Nazarian, of Johns Hopkins. (MedPage) only 0.3% patients MRI triggered back-up programming mode in implanted devices. Right ventricular sensing and atrial and ventricular lead impedance values declined immediately after MRI. Long-term follow-up revealed decreased right ventricular sensing and lead impedance, increased right ventricular capture, and reduced battery voltage. None of the changes required revision or replacement of an implanted device.

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