| | A Head Start to a Healthy Heart |
 | | The company's ability to measure electrical alternans on a microvolt level has been clinically proven to be just as accurate asand in some studies, more accurate thanmore costly and somewhat risky, invasive procedures, such as electrophysiological testing that involves the insertion of a catheter into a patient's heart to deliberately induce ventricular arrhythmias. |
 | | While other noninvasive measurement tests are performed during rest or normal activity the Microvolt T-Wave Alternans Test is administered while patients' heart rates are elevated, during exercise or pharmacological stress. |
 | | NASA and the NSBRI are currently supporting research involving the Microvolt T-Wave Alternans Test to determine whether space flight increases the risk of severe ventricular arrhythmias, and, if so, whether effective countermeasures can be developed. |
| www.sti.nasa.gov /tto/spinoff2002/hm_5.html (785 words) |