4.0 Article Proceedings Paper

Analysis of medication-related malpractice claims - Causes, preventability, and costs

Journal

ARCHIVES OF INTERNAL MEDICINE
Volume 162, Issue 21, Pages 2414-2420

Publisher

AMER MEDICAL ASSOC
DOI: 10.1001/archinte.162.21.2414

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Background: Adverse drug events (ADEs) may lead to serious injury and may result in malpractice claims. While ADEs resulting in claims are not representative of all ADEs, such data provide a useful resource for studying ADEs. Therefore, we conducted a review of medication-related malpractice claims to study their frequency, nature, and costs and to assess the human factor failures associated with preventable ADEs. We also assessed the potential benefits of proved effective ADE prevention strategies on ADE claims prevention. Methods: We conducted a retrospective analysis of a New England malpractice insurance company claims records from January 1, 1990, to December 31, 1999. Cases were electronically screened for possible ADEs and followed up by independent review of abstracts by 2 physician reviewers (T.K.G. and R.K.). Additional in-depth claims file reviews identified potential human factor failures associated with ADEs. Results: Adverse drug events represented 6.3% (129/ 2040) of claims. Adverse drug events were judged pre-veritable in 73% (n=94) of the cases and were nearly evenly divided between outpatient and inpatient settings. The most frequently involved medication classes were antibiotics, antidepressants or antipsychotics, cardiovascular drugs, and anticoagulants. Among these ADEs, 46% were life threatening or fatal. System deficiencies and performance errors were the most frequent cause of preventable ADEs. The mean costs of defending malpractice claims due to ADEs were comparable for nonpreveritable inpatient and outpatient ADEs and preventable outpatient ADEs (mean, $64 700-74 200), but costs were considerably greater for preventable inpatient ADEs (mean, $376500). Conclusions: Adverse drug events associated with malpractice claims were often severe, costly, and preventable, and about half occurred in outpatients. Many interventions could potentially have prevented ADEs, with error proofing and process standardization covering the greatest proportion of events.

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