MRI safe pacemakers?

Researchers at Johns Hopkins Hospital found that 24 models of pacemakers and implanted defibrillators (see table) seemed to be safe for use in a standard MRI machine. Keep in mind that the Hopkins protocol included temporarily reprogramming implanted devices for the duration of the MRI, turning off defibrillators' shock function, reducing the energy of the MRI, continuous monitoring with an electrocardiogram during the scan, and making sure that equipment for restarting the heart and performing CPR were immediately available. This study does not give a green light for MRIs in everyone with a pacemaker or implanted defibrillator. Pacemakers and defibrillators that satisfactorily underwent MRI testing at Johns Hopkins Hospital Manufacturer (Locked) More »

Sudden death isn't always so sudden

Many instances of "sudden" cardiac arrest are not sudden at all. In the majority of occurrences there is at least one warning sign before the event: chest pain, shortness of breah, nausea, and dizziness are the most common ones. (Locked) More »

Artificial heart helps the beat go on

The FDA has given limited approval to a fully implantable artificial heart. But for the time being at least, eligibility is limited to only those who have advanced heart failure and are unable to have a transplant. (Locked) More »

Heart Beat: What foods are rich in antioxidants?

A group of researchers measured the antioxidant content of hundreds of foods. The top choices are healthy foods, which reinforces the correlation between eating foods rich in antioxidants and betrer overall health. (Locked) More »

Heart Beat: Statins may need a boost in blacks

A study found that statins were less effective at lowering cholesterol levels in blacks than in whites. The difference was not attributable to one single reason, but it may mean that blacks need to take another drug in conjunction with a statin. (Locked) More »

Heart Beat: Stick it to 'em

Heart patients are being encouraged to get a flu shot, because fiu can worsen heart disease or lead to pneumonia, which strains the heart along with the rest of the body. (Locked) More »

Follow-up: Pacemakers and MRIs

People with certain kinds of pacemakers or ICDs can safely undergo an MRI, as long as a series of safety precautions is carefully followed. (Locked) More »