Alexandria Nyembwe is a registered nurse and health writer. She has worked in street medicine serving populations experiencing homelessness in Skid Row Los Angeles as well as in cardiovascular care in ...

Steffini Stalos, DO, FCAP, is a pathology and lab medicine physician. She is also the chief medical officer of the lab consultancy firm Blood Associates, LLC. Mean corpuscular hemoglobin concentration ...

Low blood pressure is dangerous when it drops below 90/60 mm Hg and causes symptoms. Signs of dangerous low blood pressure include feeling lightheaded, fainting, and having a fast or slow heartbeat.

There are eight main blood types, defined by the ABO system and the Rh factor. Type O-negative blood is a universal donor, and AB positive blood is a universal recipient. During pregnancy, it's ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Narrator: Blood gets around our bodies through a system of blood vessels. To picture the blood vessels, imagine a busy network of roads. And those roads are always full of little vans which are busy ...