Pulmonary arterial pressure (P.A.P.) testing is done to rule out High Mountain (or Brisket) disease. This disease is a costly disease of cattle raised at elevations greater than 5, 000 ft. Pulmonary arterial pressure testing is an effective diagnostic and management tool used to identify clinically affected and high-risk animals. This test measures the wedge pressure in the pulmonary artery. The procedure can be performed in the field and is an economically valuable method for selection and breeding management of beef cattle. The Stock Doc is the only clinic in this area with the equipment and expertise to perform this test.