Dr. Cripps is a Board Certified general surgeon with added certificates in Surgical Critical Care. He practices general surgery, trauma surgery and surgical critical care. He is also a clinical researcher who is a nationally recognized expert in the resuscitation of hemorrhaging trauma patients, the underlying mechanisms that worsen the hemorrhage, and the use of viscoelastic analysis in transfusion strategies.  He has published several articles evaluating the effects of inflammation in trauma animal models.  He has also sought to determine optimum methods of resuscitation of trauma patients by analyzing the timing and cause of death in trauma patients as well determining criteria for the empiric treatment of hyperfibrinolysis.

He has earned a Masters of Science in Clinical Sciences as part of the Clinical and Translational Science Award at UTSW.  As part of his Masters in Clinical Sciences thesis, his research evaluated various resuscitation strategies in hemorrhaging trauma patients and the effects on coagulation. Out of this research, he co-authored an algorithm for prevention of pulmonary embolisms and has published several articles on methods to prevent further venous thromboembolisms. 

He has experience in analyzing ROTEM data in hemorrhaging trauma patients works with the Parkland and UTSW transfusion pathologists.  He developed the Parkland ROTEM guided transfusion algorithm.  In collaboration with his team, he has helped institute the use of ROTEM in his hospital.