Cardiology

MRIs safe with older pacemakers, study finds

(HealthDay)—Powerful magnetic fields created during an MRI scan were thought to play havoc with some pacemakers, but a new study says these scans are safe for people with the heart devices.

Other

Researchers probing how magnets may disable medical devices

Researchers and regulators are working quickly to learn more about potentially dangerous interactions between implanted medical devices and an ever-widening array of consumer gadgets that contain powerful magnets.

Cardiology

Defibrillators in GP clinics should be standard

People who suffer a cardiac arrest while in a GP clinic are twice as likely to survive if they are promptly defibrillated with an automated external defibrillator rather than waiting to be defibrillated after paramedics arrive, ...

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Defibrillation

Defibrillation is a common treatment for life-threatening cardiac arrhythmias, ventricular fibrillation and pulseless ventricular tachycardia. Defibrillation consists of delivering a therapeutic dose of electrical energy to the affected heart with a device called a defibrillator. This depolarizes a critical mass of the heart muscle, terminates the arrhythmia, and allows normal sinus rhythm to be reestablished by the body's natural pacemaker, in the sinoatrial node of the heart. Defibrillators can be external, transvenous, or implanted, depending on the type of device used or needed. Some external units, known as automated external defibrillators (AEDs), automate the diagnosis of treatable rhythms, meaning that lay responders or bystanders are able to use them successfully with little, or in some cases no training at all.

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