Ronald A Johannsen MD

Recommended Articles

• Understanding the Connection Between Sleep Apnea and Heart Conditions

  Researchers have found that obstructive sleep apnea (OSA) is linked to cardiometabolic dysfunction. The study, seen in the Journal of Clinical Endocrinology and Metabolism, attempts to provide an explanation as to why sleep apnea patients often have problems associated with their heart.  Up until...

• What Is a Stent?

  A stent is an expandable metal tube that is used to treat weak arteries. These stents help in opening up arteries that are narrowed down by the accumulation of plaques. Implantation of the tube helps in reducing the constriction of blood flow in the affected region. The metal mesh is implanted...

• What are The Signs and Symptoms of Atrial Fibrillation?

  What are The Signs and Symptoms of Atrial Fibrillation?Atrial fibrillation also called A-Fib is a condition of the heart which causes irregular heartbeats or arrhythmia. It causes abnormal vibrations in the atria chamber of the heart and also the ventricle chamber. In a healthy human heart, the...

• Does Hypertension Have Warning Signs?

  With modern life complexities becoming more evident, instances of lifestyle health conditions like hypertension have been on the rise. According a recent report, the number of people living with hypertension is estimated to reach 1.56 billion worldwide by the year 2025. In the US, more than 75% of...

• What is Rheumatic Fever?

  Rheumatic fever is a complicated, nonsuppurative disease that affects the joints, blood vessels, heart, brain, and skin. It is an acute inflammatory response that has a PAST untreated or slightly treated Group A or group B beta-hemolytic streptococcal infection, such as strep throat or scarlet...

• Stress Can Directly Affect a Woman's Heart

  Results of a study presented in the Experimental Biology 2012 meeting in San Diego showed that coping with mental stress is harder on a  woman's heart, when compared to that of men. Researcher Chester Ray, PhD, professor of medicine, and cellular and molecular physiology at Penn State's College of...