In 70 percent of the cases, the physician who prescribed opioid painkillers after the overdose was the same as the one who wrote the prescription before the overdose.
Even after overdosing on opioid medications, more than nine out of 10 patients continued to get prescriptions for the powerful painkillers, according to a new study. As a result, some went on to suffer another overdose.
The findings, published Monday in Annals of Internal Medicine, are “highly concerning,” the study authors wrote. The overdoses examined in the report were serious enough to send patients to emergency rooms or get them admitted to hospitals, so they should not have escaped their doctors’ attention.
But that may be exactly what happened, the researchers surmised. In 70 percent of the cases, the physician who prescribed opioid painkillers after the overdose was the same as the one who wrote the prescription before the overdose. That tends to support the idea that the prescribers simply weren’t aware that anything had gone awry.
“Prescribing guidelines … clearly state that misuse of opioids and adverse effects are compelling reasons to discontinue opioids,” the study authors wrote. Presumably, if doctors knew about the overdoses, they would have thought twice before authorizing their refills.
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“Some prescribers may have been unaware that the opioid overdose occurred,” wrote the authors, led by Dr. Marc Larochelle, who studies addiction issues at the Boston University School of Medicine.
With 16,651 deaths blamed on prescription painkillers in 2010, Larochelle and his colleagues were on the lookout for ways to identify patients at heightened risk for a fatal overdose. A nonfatal overdose seemed a likely candidate.
So they used a nationwide medical database to identify 2,848 people in the United States who had an opioid overdose that was bad enough to send them to the hospital but not serious enough to kill them. All of these patients were on long-term opioid therapy to treat pain for diseases other than cancer. Their prescription painkillers included morphine, codeine, oxycodone, hydrocodone and fentanyl.
The average age of these patients was 44, and 60 percent of them were women. In addition, 46 percent of patients were taking doses of opioids that were high enough to be considered “large” (as opposed to “low” or “moderate”) and 41 percent of them were known to have a drug-use disorder, as documented by their medical-insurance claims.
But the main thing the researchers wanted to know was whether these patients continued to get prescription painkillers after having a serious overdose. The answer was clear: They did.
On the 30th day after their overdose, about one-third of the patients in the study had prescriptions that delivered “high daily opioid dosages,” the researchers found. Over the next 30 days after that, about 70 percent had an “active opioid prescription” on any given day.
Overall, a whopping 91 percent of the patients got at least one opioid prescription sometime after their nonfatal overdose. A typical patient was tracked for 299 days, but some were tracked for well over a year.
In general, patients stayed in the same dosage category (low, moderate or large) before and after their overdose, the researchers found. To the extent that dosages changed, they tended to get smaller. Even so, 7 percent of the patients who had already suffered one opioid-related overdose went on to suffer a second overdose while they were still in the study pool.