Cardiac Stress Test & Mortality Risk
- A new study led by Mount Sinai researchers indicates that individuals capable of sufficient treadmill exercise during a cardiac stress test face a reduced mortality risk, irrespective of...
- The research team analyzed data from 15,562 patients who underwent SPECT myocardial perfusion imaging over seven years.
- The study revealed that among participants who completed treadmill exercise, the mortality rate remained below 1% annually, regardless of existing coronary artery disease (CAD) risk factors.
Exercise capacity during a cardiac stress test directly impacts mortality risk, a key finding from a Mount Sinai study. The research underscores that patients who perform well on a treadmill during the test experience substantially lower mortality rates. This holds true regardless of their heart disease severity. The study examined over fifteen thousand patients, revealing those capable of exercise had a mortality rate under one percent annually. Assess your ability during cardiac stress tests, as exercise capacity may outweigh customary risk factors.Experts are urging a shift towards evaluating and discussing exercise benefits with patients. For more insights, browse other articles at News Directory 3. Discover what’s next for heart health.
Cardiac Stress Test: Exercise Capacity Lowers Mortality Risk
Updated June 08, 2025
A new study led by Mount Sinai researchers indicates that individuals capable of sufficient treadmill exercise during a cardiac stress test face a reduced mortality risk, irrespective of the severity of their heart disease. The findings, published in Mayo Clinic Proceedings, highlight the potential life-saving benefits of physical fitness and underscore the importance of assessing exercise capacity during cardiac evaluations.
The research team analyzed data from 15,562 patients who underwent SPECT myocardial perfusion imaging over seven years. This imaging technique assesses blood flow to the heart during stress and rest. Patients were categorized based on their ability to perform treadmill exercise. Those unable to do so underwent medication-induced coronary artery dilation.
The study revealed that among participants who completed treadmill exercise, the mortality rate remained below 1% annually, regardless of existing coronary artery disease (CAD) risk factors. In contrast, the mortality rate was significantly higher among those who underwent pharmacological testing, with the risk escalating alongside the burden of CAD risk factors.
”Our data show that assessing a person’s ability to exercise during cardiac stress testing and their exercise capacity provides a stronger distinction between high- and low-risk patients than any other clinical risk factors evaluated at the time of cardiac stress testing,” said Dr. Alan Rozanski,professor of medicine at the Icahn School of Medicine at Mount Sinai and lead author.
Rozanski emphasized the need for cardiac stress test reports to comprehensively document a patient’s exercise capacity. When limitations exist, physicians should investigate the underlying causes to gain insights into overall risk and guide appropriate interventions.
What’s next
The researchers hope these findings will encourage physicians to engage in more meaningful conversations with patients about the importance of physical activity and its impact on cardiovascular health. Even small amounts of daily exercise can yield significant benefits.