Science & Technology

Shape-HF Provides Physiological Measure of Functional Capacity

Exertional dyspnea is complex and the source of limitation can lie anywhere along the oxygen uptake, delivery and utilization circuit. Other than cardiopulmonary exercise testing, objective measures of exertional dyspnea are lacking. Standard assessments, such as the New York Heart Association classification system and the six minute walk test are largely subjective and come with significant inter-observer variability and reliance on patient motivation and effort.

Patient functional capacity is influenced by an array of physiological factors that are reflective of heart failure severity must be measured for physicians to make objective, evidence-based decisions on patient status and prognosis.

Shape-HF provides a systemic physiological measure of patient functional capacity, specifically breathing efficiency, oxygen uptake efficiency, CO2 measurement, and ventilation ratio. Results are objective and evidence-based, overcoming the limitations of standard assessment methods.

Shape-HF helps the physician characterize the nature of the limitation and identify its predominant source, whether heart or lung. And, Shape-HF assists the physician in detecting potential or developing issues, such as exercise-induced changes in pulmonary vasculature that may be adding to the functional limitation and may be associated with pulmonary hypertension.

By assessing cardiopulmonary reserve and aerobic capacity, the doctor can determine the severity of the limitation and better understand the issues associated with oxygen delivery and utilization.

“Nothing is better than cardiopulmonary exercise testing to assess patient functional status.”

ACC/AHA Guidelines for Exercise Testing Class I Indication