Evans P. Holland, M.D.

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  Atrial fibrillation - also known as AF or a-fib - is a medical condition that affects the rhythm of the heart. Problems that affect the rhythm of the heart cause a condition known as arrhythmia. This condition often causes irregular blood flow. It is quite common, with more than 200,000 cases in the...

• Are Statins Safe?

  Statins are a class of drugs that help to reduce the levels of cholesterol in blood by inhibiting the enzyme involved in the production of cholesterol in liver. It is one of the most commonly prescribed drug to lower cholesterol levels and to avoid complications like stroke and heart attacks....

• What Is a Normal Heart Rate?

  What is heart rate?The heart rate is the number of heartbeats that occur per minute. The normal heart rate depends from person-to-person. As people get older, the heart rate changes and pulse regularity may change, which can signify heart problems or other medical conditions. Your heart rate may...

• What Is Nicotine?

  IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...

• How Can a Cardioverter-Defibrillator Treat Congestive Heart Failure?

  Congestive heart failure is a common condition affecting the muscles of the heart and peripheries of the body. It leads to inefficient pumping action from the heart, which in turn results in a lesser amount of blood reaching the various parts of the body. Being highly prevalent in people aged over...

• Lightheadedness

  What is lightheadedness?Lightheadedness or feeling faint may not always be a cause for concern. However, it may also indicate an underlying health problem and can increase the risk of falling and fall-related injuries. If you feel lightheaded, drink water or fluids containing electrolytes and take...