http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. (Medical Xpress)—University of Otago researchers have discovered a potential new tool to help doctors in emergency departments quickly and accurately diagnose patients with heart failure and pneumonia. http://medicalxpress.com/news/2013-04-discovery-heart-failure-pneumonia-diagnosis.html Diseases, Conditions, Syndromes Wed, 03 Apr 2013 08:18:46 EST news284195881 (Medical Xpress)—A group of researchers in Austria and Switzerland has for the first time proven that immune cells migrate along chemical concentration gradients. This process has long been assumed but never demonstrated experimentally in living tissues. http://medicalxpress.com/news/2013-01-immune-cells-gradients.html Immunology Fri, 18 Jan 2013 04:58:38 EST news277707485 Every year, over 300,000 heart valve replacement operations are performed worldwide. Diseased valves are often replaced with mechanical heart valves (MHVs), which cannot yet be designed to suit each patient's specific needs. Complications such as blood clots can occur, which can require patients to take blood-thinning medication. http://medicalxpress.com/news/2012-12-simulations-blood-mechanical-heart-valves.html Cardiology Wed, 19 Dec 2012 09:34:54 EST news275132085 The ability to form closed systems of blood vessels is one of the hallmarks of vertebrate development. Without it, humans would be closer to invertebrates (think mollusks) in design, where blood simply washes through an open system to nourish internal organs. But vertebrates evolved closed circulation systems designed to more effectively carry blood to organs and tissues. http://medicalxpress.com/news/2012-02-scientists-evolutionary-secret-blood-vessels.html Medical research Tue, 21 Feb 2012 11:32:21 EST news249046279