Pharmacists involved in SPAs may participate in clinical services that do not fall within the traditional field of activity of pharmacists. In particular, pharmacists are not required to participate in ASPs to offer many pharmacy services already covered by their traditional activity, such as. B the management of drug therapy, the provision of disease prevention services (e.g. B vaccinations), participation in public health screenings (e.g. B screening for depressive disorders, such as. B severe depressive disorders, by administering the HQP-2, by providing Member State-specific information (e.g. B as a certified diabetic pedagogue) and advising patients on information about their medications.  In the keynote address at the 2013 APhA Annual Meeting, Reid Blackwelder, President of the American Academy of Family Physicists (AAFP), advocated for a “collaborative vision of health care.”  According to health researcher Karen E. Koch, the first expression of the notion of “collaborative management of drug therapy,” William A. Zellmer published in the 1995 American Journal of Health System Pharmacy.  Zellmer supports the use of the notion of “collaborative management of drug therapy” rather than “prescribing” and argues that this will make legislation that expands the authority of pharmacists more tasty for legislators (and physician interest groups).
Most importantly, the debate about why pharmacists have an interest in strengthening this authority is to improve patient care through interdisciplinary cooperation.  The modern concept of collaborative practice has been partly derived to avoid the controversial notion of dependent prescribing authority.  While ASAs are not a prerequisite for collaborative care, they can help improve the effectiveness and efficiency of collaborative care. If harnessed to their full potential, ASAs have the opportunity to improve access to care, expand services available to patients, increase the efficiency and coordination of care, and use pharmacists` medication skills to complement the skills and knowledge of other members of the health team. In 2015, the American College of Clinical Pharmacy (ACCP) published an updated white paper on collaborative medication management. The CACP regularly publishes updates on this subject, with previous publications in 2003 and 1997. The document describes the recent history of ASAs, legislative progress and discusses payment models for collaborative drug management.  A Collaborative Practice Agreement (CPA) is a legal document in the United States that establishes a legal relationship between clinical pharmacists and cooperating physicians, which allows pharmacists to participate in the collaborative management of drug therapy (CDTM).
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