Post-Surgery Opioid Use in Sweden
Approximately 2.82% of Swedish surgical patients continue to fill opioid prescriptions months after their procedures, according to recent research from Karolinska Institutet.
While opioids manage severe acute pain effectively, roughly 7,000 patients in Sweden use them this way annually. Claes Gedda at the Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, presented these findings in his doctoral thesis. The study analyzed data from 1,245,211 adults who underwent surgery between 2018 and 2022.
Researchers focused on individuals who had not filled an opioid prescription for most of the year preceding their operation. The data indicated that patients who collected opioids during the first week after surgery were more than twice as likely to remain on the medication several months later.
Risk Factors for Long-Term Consumption
Certain patient demographics and health histories correlate with a higher likelihood of persistent opioid use. Older age and comorbidities, such as chronic pain or a recent cancer diagnosis, increase risk. Researchers also identified mental health factors, including anxiety or depression, alongside histories of substance misuse, as contributing indicators.
Patients who underwent emergency surgery also faced a higher risk of continuing to fill prescriptions well into their recovery period.
A cohort study examining data from 2007 to 2014 across 23 Swedish hospitals found that 7% of 216,877 patients developed new, prolonged opioid consumption. That study identified a history of psychiatric disease as the strongest risk factor, with an adjusted odds ratio of 1.94.
Reducing Post-Operative Opioid Reliance
Healthcare systems may have the opportunity to influence these outcomes through changes in prescribing practices. In a study of 842 patients undergoing major colon and rectal surgery, researchers replaced fixed-schedule opioid dosing with an as-needed approach supplemented by non-opioid pain relief. This strategy resulted in a 70% reduction in median opioid consumption over four years.
By the end of the study, nearly one in three patients required no opioids at all during the first six days post-surgery.
“Our results show that part of the risk can be identified even before surgery,” Gedda stated. “At the same time, post-operative prescribing is a factor that the healthcare system can actually influence.”
Remaining Questions for Future Research
While the shift toward as-needed administration shows promise in lowering early post-surgical opioid intake, the long-term implications remain unclear. Investigators have yet to determine whether reduced consumption during the initial recovery phase directly correlates with a lower risk of long-term dependency. Addressing this knowledge gap is a priority for future studies. The formal findings from this research are scheduled for public defense on December 4, 2026.
Reasons for Prolonged Opioid Use and Varying Study Definitions
Why do some patients continue using opioids long after their surgery?
Prolonged use is often linked to pre-existing conditions such as chronic pain, anxiety, depression, or a history of substance misuse. The initial post-operative prescribing pattern also plays a role, as early dependence can develop quickly after the first week of recovery.
How does the definition of “prolonged use” vary between studies?
There is currently no global consensus on the precise definition of prolonged opioid consumption.
While the 2018–2022 study defined it as collecting prescriptions during the first three months and again between months four and six, other researchers use different benchmarks, such as measuring usage at the one-year mark.
Does reducing early opioid use prevent long-term addiction?
It is not yet known whether smaller doses or shorter durations of early post-operative opioid use effectively lower the risk of long-term dependency. Further investigation is required to establish a direct causal link between changes in hospital prescribing protocols and long-term patient outcomes.
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