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New long term opioid use after lung cancer surgery for pain relief linked to increased death risk
Lung cancer is the leading cause of cancer death worldwide, with nearly 1.8 million deaths in 2020. Further in cases of lung cancer surgery, new persistent postoperative pain has been reported in up to 12% of patients for which patients may be prescribed opioids.According to a new study, new long term use of opioids to quell pain after lung cancer surgery is linked to a 40% heightened risk...
Lung cancer is the leading cause of cancer death worldwide, with nearly 1.8 million deaths in 2020. Further in cases of lung cancer surgery, new persistent postoperative pain has been reported in up to 12% of patients for which patients may be prescribed opioids.
According to a new study, new long term use of opioids to quell pain after lung cancer surgery is linked to a 40% heightened risk of death from any cause within the next 2 years.
The research has been published online in the journal Regional Anesthesia & Pain Medicine.
Male sex, older age, use of chemo, anxiety and insomnia are among the factors associated with new long term (6 or more months) use, the findings show.
The researchers therefore wanted to know what proportion of them become opioid users for the first time following surgery, whether particular factors are associated with long term use, and if this is associated with any harmful effects within the subsequent 2 years.
They included all adults diagnosed with lung cancer, and who had undergone surgery for their disease between 2011 and 2018 in South Korea, details of which were retrieved from the National Health Insurance Service (NHIS) database.
Doctors in South Korea must enter details of their patients' diagnoses, procedures, and prescription drugs in order to be reimbursed for treatment costs by the government. The database also contains background personal information, including age, sex, and household income on every registrant and the date of their death.
Codeine, dihydrocodeine, and tramadol were categorised as less potent opioids; all other opioids, such as fentanyl, morphine, oxycodone, hydromorphone and methadone, were categorised as potent opioids.
The researchers took account of other underlying conditions/disabilities, surgery type and whether it was a repeat or first time procedure, where it was performed, and whether the patient was discharged home or to long-term care.
Some 60,031 adults underwent lung cancer surgery during the study period, and after excluding those who died in hospital or within the first 6 months of discharge, the final analysis included 54,509 of them.
Six months after surgery 3325 patients (just over 6%) who had been newly prescribed opioids were still taking them: 859 (1.6%) were on potent drugs and 2466 (4.5%) were on less potent drugs.
New long-term opioid use was associated with a heightened risk of death from any cause within the next 2 years; 17.5% (574/3325) of long term opioid users died compared with 9.5% (4738/51,184) of those not taking opioids.
Compared with those not taking opioids, new long term users of these drugs were 40% more likely to die within the next 2 years of any cause.
When stratified by potency, those taking less potent opioids were still 22% more likely to die; those taking more potent opioids were 92% more likely to die.
Certain factors were associated with a greater likelihood of becoming a new long term user: older age, male sex, particular surgical procedures, especially thoracotomy where a cut is made between the ribs, longer length of hospital stay, a greater degree of disability, chemotherapy treatment, and preoperative anxiety and insomnia.
This is an observational study, and as such, can't establish cause. And the researchers highlight that they weren't able to ascertain lung health before surgery, important lifestyle behaviours, such as smoking and drinking, or tumour stage, all of which may have influenced the findings.
But previously published research indicates that opioids may help promote tumour growth and inhibit cancer cell death, while also suppressing the immune system they note.
And they point out: "This is the first study to identify the association of new long-term opioid use with poorer long-term survival outcomes after lung cancer surgery using real-world data based on a national registration database."
Schwenk ES, Gupta RKMortality associated with long-term opioid use after lung cancer surgery: an infographicRegional Anesthesia & Pain Medicine Published Online First: 12 September 2022. doi: 10.1136/rapm-2022-103966
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: email@example.com. Contact no. 011-43720751