text_1: Doctors weigh brain-oxygen monitor
text_2: This article provides a good overview of arguments for and against use of a brain-oxygen monitoring system for heart surgery. It also provides an excellent explanation of how the device works, and how it may reduce risk of cognitive damage following surgery. The biggest problem with the story is the lack of evidence and quantitative data about cognitive harm both with and without the device. While the story implies that conclusive data are not available, it should have cited the most relevant research and provided the necessary caveats. Finally, a failure to mention the option of beating-heart surgery for some patients–a technique shown to reduce risk for cognitive damage–is a significant oversight.