Descrição Does the idea of a tube in your heart scare you? CardioDynamics International might be able to help. Its BioZ systems give doctors a noninvasive way to gather cardiac data traditionally collected with the insertion of a catheter. The digital systems measure mechanical cardiac activity, such as contraction strength and pumping capability. Doctors can use them to assess and treat patients with heart failure, high blood pressure, and shortness of breath. The firm markets its products both directly and through distributors in more than 30 countries worldwide. Customers include some hospitals, but outpatient facilities and physician practices are its primary markets.