Premature ventricular contraction (PVC) is a type of abnormal heartbeat, or arrhythmia. It happens when the heartbeat begins in the lower, rather than the upper, heart chambers. This creates an ...

Context Explanation

Ventricular arrhythmia occurs when the heart’s lower chambers beat out of sync, which can prevent the heart from effectively pumping blood throughout the body. Diagnosis of ventricular arrhythmia ... Medscape: PVCs: Modifiable Risk Factor for Heart Failure . .

Insight Material

. Maybe A colleague recently asked me how I would approach an asymptomatic young patient with thousands of premature ventricular complexes (PVCs). She said, "I used to think I knew how to treat PVCs, but ... The New England Journal of Medicine: Increasing the Potassium Level in Patients at High Risk for Ventricular Arrhythmias Hypokalemia and even low-normal plasma potassium levels increase the risk of ventricular arrhythmias among patients with cardiovascular disease. An assessment of a strategy of actively increasing ...

Final Conclusion

Increasing the Potassium Level in Patients at High Risk for Ventricular Arrhythmias An arrhythmia is an atypical heartbeat that is either much faster or slower than expected. Your heartbeat may be described as chaotic, rather than steady and predictable. There are several types of ...