William J Nicholson MD

Tachycardia refers to rapid heartbeat, with more than 100 beats per minute. When this fast rhythm starts from the lower chambers of the heart (the ventricles) this condition is referred to as ventricular tachycardia. This fast beating heart rate may lead to a condition called ventricular...

As men age, their risk of heart attack rises, especially if they are prone to anxiety. In a 12-year study, anxiety was found to increase the risk of heart attack by 30% to 40% in men who are anxious when compared to men who are calmer, irrespective of other personality and risk factors. In this...

Atrial fibrillation (also called AFib) is a heart arrhythmia infection. It causes sporadic electrical signals within the atria, affecting heart rate. This is referred to as rapid ventricular rate (RVR). Atrial fibrillation derives from unusual electrical impulses within the heart.Factors to consider...

Invasive dental treatments, like tooth extractions, may increase the risk of heart disease or stroke, according to a new study published in, Annals of Internal Medicine. The results show the risk as a short-term one, which can return back to normal after six months.Earlier studies have shown a link...

Once a heart failure is diagnosed, it is evaluated. To commence the proper evaluation of heart failure, it is essential to share a complete and accurate history of what you are experiencing and what you have experienced so far with your doctor. Providing a complete and accurate history of your...

DiabetesInsulin is a hormone that is secreted by the pancreas. Diabetes can develop when the pancreas stops secreting insulin or when the body becomes resistant to insulin. The most common type of diabetes is type 2 diabetes.According to the American Diabetes Association, more than 25 million people...