Quick travel may be convenient, but rapidly crossing several time zones disrupts your body’s circadian rhythm—your internal ...

Dr. Birgenheier is an anesthesiologist who focuses on cardiac anesthesia and the use of echocardiography (ultrasound of the heart) both in the operating room and in the outpatient setting. He is a ...

Aortic stenosis happens when your aortic valve does not open all the way causing pressure to build in the left ventricle. This pressure blocks blood flow as it leaves the heart. In other words, the ...