They sound like some of the worst mistakes a surgeon could make: Leaving an instrument inside a patient. Operating on the wrong body part – or the wrong person. They’re aptly named never events, the errors that should never, ever occur.
Turns out, however, these never events occur quite frequently, about 500 times a year. Between September 1990 and September 2010, research in the journal Surgery found evidence of 9,744 paid malpractice claims for never events.
About half of those cases were ones in which surgeons left an object inside the patient (separate research suggests that the most frequently forgotten items are sponges). The other half were cases where the surgeon operated on the wrong part of the body or performed the wrong procedure. A small number, 17, involved surgeons operating on the wrong person.
These events are dangerous: When the researchers analyzed a smaller cohort of data, from 2004 through 2010, they found that 6.6 percent of patients experiencing a never event subsequently died. A third had a permanent injury and 59 percent had a temporary injury.
Patients who received the wrong procedure were at highest odds of death or permanent injury. The research also found that younger patients had significantly better odds of surviving a never event than did patients older than 60.
Keep in mind, these data only draw from malpractice claims that were paid.
It’s hard to know whether this study even captures the full breadth of never events. As the study’s lead author Winta Mehtsun, a surgeon at Johns Hopkins University School of Medicine, points out, their data only cover malpractice claims. They don’t touch cases never filed.
What the data do suggest is that we do know a bit about which doctors are most likely to experience never events. They are, perhaps unsurprisingly, doctors who had already experienced malpractice claims. Younger doctors also had higher odds of settling malpractice claims for never events.