Mark J Krell MD

Atrial fibrillation is a condition of the heart which causes irregularity of the heartbeat. It causes quivering inside the heart chambers, especially the atria. Due to this rapid and irregular trembling, patients also have an increased risk of stroke.People that have atrial fibrillation usually have...

What is High Blood Pressure?High blood pressure is a condition whereby an individual’s blood vessels become strained due to high pressure by the blood flowing in them. It’s a dangerous condition not because it has any negative side-effects on its own but because of the potential health problems...

Do you want to know what Cardiac Resynchronization Therapy (CRT) is? Do you know exactly how your heart functions? It works in a rhythm. It beats 60 to 100 times per minute, and when it beats, it pumps oxygenated blood to your whole body. When the heart relaxes immediately after each beat, impure...

The formation of blood clots in one of the deep veins in the leg may not be entirely serious alone. However, if the clot breaks off and moves towards the heart and other organs, it may lead to complications. Blood clots in the leg may cause leg pain but may also not cause any symptoms at all....

Hypertension or high blood pressure is a condition that causes an immense force of blood on the walls of the arteries. This pressure could sometimes be so high that it could eventually lead to certain health conditions. High blood pressure is one of the leading causes of stroke and other serious...

Introduction Tachypnea is a medical term, which means rapid and shallow breathing. This condition is often confused with hyperventilation, which is another type of abnormal breathing that is characterized by rapid but deep breathing. Both conditions are caused by carbon dioxide buildup in the...