Posted April 6, 2013. Commentary by Sumant Ranji, MD. Despite many patient safety success stories, the sobering truth is that, overall, patient safety has not improved throughout the past decade. Landmark studies indicate that the prevalence of preventable harm likely has not changed over the past several years, and some of the highest-profile efforts to improve safety thus far—such as restricting resident work hours and investing in health information technology—have resulted in additional costs (in terms of manpower, time, and finances) without tangible benefits for patients or clinicians. Read more.