Objective Fractional flow (FF) reserve has been developed as a gold standard for coronary intervention. Intracranial FF is also a valuable hemodynamic index to assess the severity of narrowing in ...

Color can change with blood flow or how new it is, since blood oxidizes (reacts with oxygen) and gets darker over the course of the menstrual cycle. Period blood also can be black, orange, green, or ...

A sudden drop in blood pressure can occur for any number of reasons. Hypotension, or low blood pressure, means that vital organs may not be getting enough blood flow. It may be due ... severe internal ...

We’ve been talking a lot about iOS 19 over the last few days, as rumors suggest that the next version of the iPhone’s operating system will receive a new interface inspired by visionOS.

The show throws you straight into the high-stakes world of corporate warfare Lee Je-hoon as Yoon Joo-no, a master negotiator with a reputation for turning the impossible into a signed contract ...

However, the brain’s blood vessels are surrounded by open, fluid-filled spaces. In recent decades, the cerebrospinal fluid, or CSF, in those spaces has drawn a great deal of interest. “Maybe the CSF ...

The agency OK’d an artificial vessel to restore blood flow in patients, even though its own scientists flagged questionable study results and potentially fatal ruptures of the product.

The differences were stark. From January 2018 to March 1, 2020—the date researchers used as the cutoff for the pre-COVID era—the study found an estimate of 4.21 new cases diagnosed per month ...

At its heart, Flow is about found family. These creatures—different in temperament and past experiences—must rely on one another as they face the grandeur and cruelty of nature. They each get ...

Patients with paradoxical low-flow, low-gradient severe aortic stenosis exhibit low transvalvular flow rate (Q), while maintaining preserved left ventricular ejection fraction. Severe mitral ...