By Pat Anson, PNN Editor

Tens of thousands of pain patients on long term opioid therapy have been cutoff or tapered to lower doses more rapidly than recommended, putting them at risk of withdrawal, uncontrolled pain and suicide, according to a large new study.

The study, published in JAMA Network Open, is one of the first to assess the impact of the 2016 CDC opioid guideline and other measures aimed at reducing opioid prescribing.

Researchers at University of California Davis reviewed the prescription records of over 100,000 patients on stable opioid doses from 2008 to 2017.

The percentage of patients who were tapered rose significantly during the study period -- from 10.5% in 2008 to 22.4% in 2017 – especially for patients on relatively high daily doses that exceeded 90 MME (morphine milligram equivalent).

“Opioid tapering has become increasingly common among patients using long-term opioids, particularly among patients taking higher doses and since the publication of the CDC opioid prescribing guideline,” researchers found.   

“Our results also suggest that many patients undergo tapering at rapid maximum rates. The downstream effects of opioid tapering on pain, withdrawal, mental health, and overdose risk warrant careful evaluation.”

Federal guidelines recommend a gradual dose reduction of about 10% per month. But researchers found that tapering for nearly one in five patients exceeded that level and some were tapered at rates six times higher than recommended. The average dose reduction overall was 27.6% per month.

"Tapering plans should be based on the needs and histories of each patient and adjusted as needed to avoid adverse outcomes," said study author Alicia Agnoli, MD, an assistant professor of family and community medicine at UC Davis. “Unfortunately, a lot of tapering occurs due to policy pressures and a rush to get doses below a specific and sometimes arbitrary threshold. That approach can be detrimental in the long run."

Too rapid tapering can have devastating consequences on patients and their families. Such was the case for Bryan Spece, a 54-year old Montana man who committed suicide after his dose of oxycodone was abruptly reduced by 70 percent. The pain clinic that tapered Spece said it was following the CDC guideline.

"He was the last person anyone would have thought to take his own life. He was just not that guy," a family member told PNN. "I know he was in a lot of pain and in a very dark spot."

Women More Likely to Be Tapered

Although men are twice as likely as women to die from an opioid overdose, UC Davis researchers found that tapering rates for women were about 13% higher than men, which they attribute to a possible sex bias.

“When considering dose tapering for patients, clinicians may fear that a recommendation of tapering may prompt angry or even violent responses, particularly from male patients. Such perceptions may be associated with a sex bias among clinicians, manifesting as a greater willingness to initiate tapering among women than men,” researchers said.

Although patients who survive an opioid overdose are at substantial risk of overdosing again, the study found that less than one in four patients (23.4%) with recent overdoses were tapered by their prescribers.

Researchers hope to build on the study further to develop best practices for dose reduction.

"Ultimately, we want to clarify the effects of tapering on patients and how to help them taper to maximize benefits and minimize risks," said lead author Joshua Fenton, MD, a professor of family and community medicine at UC Davis. "We expect this line of research will have important implications for how physicians manage and monitor patients who are undergoing opioid tapering."

The Food and Drug Administration first warned in April that many pain patients were being tapered inappropriately, putting them at risk of serious harm. That was followed a few days later by a pledge from CDC Director Robert Redfield, MD, to evaluate the impact of the agency’s opioid guideline and to “clarify its recommendations.”

Seven months later, not a single word of the CDC guideline has been changed or clarified. Outside of an editorial published in the New England Journal of Medicine, the CDC has made no effort to publicize or widely disseminate warnings to doctors not to taper patients too rapidly.

Not until last month – three and a half years after the CDC guideline was released – did the Department of Health and Human Services publish a 6-page guide for doctors on how to taper patients. The guide encourages prescribers to collaborate with patients and “obtain patient buy-in” before starting a tapering program.