The four valves of the heart allow blood to flow through the heart in the right direction. The valves open or close each time the heart beats. Problems with the heart valves can lead to palpitations, ...

Heart valve diseases affect how blood flows through the heart muscle. Symptoms of heart valve disease can be subtle or develop slowly over time, with extreme fatigue often being the first sign.

The director of adult cardiothoracic anesthesia at Mount Sinai, Dr. Gregory Fischer specializes in taking care of patients who are undergoing heart and lung surgeries, including echocardiography.

As you get older, you may expect to feel a little slower. Climbing the stairs might leave you feeling winded. Yard work takes longer. Or you find yourself napping more than you used to. While these ...