A 78-year-old man with a history of heart failure presents for routine follow-up 1 week after insertion of a pacemaker. As part of the evaluation, a 12-lead ECG is obtained. The correct diagnosis is ...

A new study from Karolinska Institutet in Sweden demonstrates that a change in the ECG wave called the QRS prolongation is associated with a higher rate of heart-failure mortality. According to the ...

New research pinpoints how to spot which heart failure patients are most likely to benefit from getting a pacemaker. Previous research has shown that receiving a pacemaker can improve symptoms and ...

A woman is brought to the emergency department with chest pain. Her clinicians do not have to search far for the source. Mrs. R, 63 years old and visibly obese, was transported by paramedics to the ...

A new meta-analysis study, led by physician researchers at University Hospitals (UH) Case Medical Center and Case Western Reserve University School of Medicine, and to be published in the Archives of ...

The diagnosis is sinus tachycardia, right ventricular pacemaker, P-wave synchronous ventricular pacing (A-sensed V-paced), pseudo second-degree AV block due to failure of atrial sensing. There is a ...

The human heart is a highly complex pump made of muscle, complete with its own electric power system, supplying the energy and oxygen it needs to function. The heart’s pumping action is regulated by ...

IMPLANTED cardiac pacemakers may become exhausted and no longer produce myocardial response. Pharmacologic means were used in this study to restore responsiveness to partially exhausted pacemakers in ...

An EKG measures the heart’s electrical activity and can detect various issues, including heart attacks, rhythm abnormalities, and electrolyte imbalances. Seek immediate medical help if you experience ...

A specialist tells how to interpret subtle changes on the ECG, including those caused by two life-threatening syndromes you might otherwise miss. Reading ECGs is like learning to appreciate art—it is ...