Pulmonary Hypertension Research Act of 2005 - Amends the Public Health Service Act to require the Director of the National Heart, Lung, and Blood Institute to expand, intensify, and coordinate the activities of the Institute with respect to research on pulmonary hypertension and to coordinate the Director's activities with related activities of other national research institutes and National Institutes of Health (NIH) agencies. Requires the Director to make grants to, or enter into contracts with, public or nonprofit private entities for the development and operation of centers to conduct research and programs on pulmonary hypertension, including: (1) basic and clinical research into the cause, diagnosis, early detection, prevention, control, and treatment of the disease; (2) training programs for scientists and health professionals; (3) programs to provide information and continuing education to health professionals; and (4) programs for the dissemination of information to the public. Requires the Director to establish: (1) a data system for the collection, storage, analysis, retrieval, and dissemination of data derived from patient populations with pulmonary hypertension; and (2) an information clearinghouse to facilitate and enhance knowledge and understanding of pulmonary hypertension by health professionals, patients, industry, and the public.
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