Author Affiliations: The Veterans Affairs Ann Arbor Health Services Research and Development Center of Excellence; Division of Cardiovascular Medicine and Center for Healthcare Outcomes and Policy (CHOP), University of Michigan Medical School, Ann Arbor (Dr Nallamothu); Section of Cardiovascular Medicine and Robert Wood Johnson Clinical Scholars Program, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut (Dr Krumholz).
Ad hoc is a Latin phrase, literally meaning “for this.” It typically implies a solution designed for a particular problem or task—that is, something not broadly generalizable. When the term was introduced more than 2 decades ago to cardiologists in the context of percutaneous coronary intervention (PCI), it suggested the unique circumstances that justified combining coronary angiography and PCI into the same setting.1 This approach was uncommon in the early years of PCI when most procedures were performed days to weeks after the initial diagnostic test.
Nallamothu BK, Krumholz HM. Putting Ad Hoc PCI on Pause. JAMA. 2010;304(18):2059–2060. doi:10.1001/jama.2010.1509
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