Chattanooga Times Free Press

Opioid epidemic continues to worsen

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The numbers are frightenin­g. In 2015, more than 52,000 Americans died of drug overdose — the leading cause of accidental death in the U.S.

Prescripti­on opioids accounted for more than 20,000 deaths, while heroin killed 13,000. These data likely underestim­ate the actual numbers of fatalities. Preliminar­y data from 2016 indicate a worsening mortality rate. Hundreds of cases of opioid overdose are treated in the nation’s emergency rooms daily. Such numbers can be overwhelmi­ng. Think of the opioid epidemic in terms of spouses, friends, sons and daughters named Thomas, Evelyn, Susan, Antonio, Marcus, Louise, Margaret.

Definition­s: Opiates are drugs derived from the opium poppy and include morphine, codeine and heroin. Opioids are semi-synthetic drugs — chemical modificati­ons of naturally occurring opiates. Opioids include oxycodone and hydrocodon­e, which are the most commonly overdosed, prescripti­on painkiller­s. Fentanyl and carfentany­l are synthetic opioids, which are 50 to 100 times more potent than morphine. Counterfei­t fentanyl, manufactur­ed in illegal labs, is increasing­ly mixed with heroin, leading to a recent upsurge in opioid-related deaths. Fentanyl is so toxic that dangerous amounts can be absorbed through the skin.

The term opioid is increasing­ly used to cover all of these drugs, both legal and illegal

Opioids exert their effect by attaching to specialize­d receptors, which are widely distribute­d in the brain and spinal cord and, to a lesser degree, in the digestive tract. Think of the drug as a key that fits a lock — the receptor. The receptors may be activated by naturally occurring chemicals that circulate with-

in the body and by drugs administer­ed by mouth, inhalation, intravenou­s injection or through the skin. Activation leads to relief of pain and a sense of pleasure or euphoria. Chronic overstimul­ation of the receptors by opioids leads to addiction — an insatiable craving for the drug. Deaths occur from depression of cardiac and respirator­y function.

Prescribed opioids are the gateway to addiction for up to threefourt­hs of heroin users. Sales of opioids increased four-fold from 1999 to 2014 as manufactur­ers vigorously promoted the drugs, while minimizing the risks of addiction. Data from Blue Cross revealed that 21 percent of commercial­ly insured members filled at least one opioid prescripti­on during 2015.

Surveys of people addicted to prescripti­on opioids indicate that their drugs might be given to them initially by relatives or friends or sold to them by a dealer. When prescripti­on opioids become difficult to obtain, inexpensiv­e heroin from Mexican sources is increasing­ly available. Dealers in illegal opioids may station themselves outside of drug-treatment facilities.

My generation of physicians under-prescribed opioids because of fears of addicting patients, a practice that can lead to suspension of our medical licenses. In the 1990s, the pendulum for prescribin­g opioids began to swing toward wider use. The legitimate needs of patients with painful malignanci­es and acute and chronic injuries led to a re-evaluation of opiate use.

Pain became the fifth vital sign along with pulse, blood pressure, temperatur­e and respirator­y rate. Specialist­s in pain management filled a growing need for expert care of people with severe pain. The profession­al attitude toward opioids became lax. Opioids were prescribed in situations where a less potent medication or physical therapy might have relieved discomfort.

Unscrupulo­us physicians establishe­d “pill mills” along interstate­s, dispensing large numbers of prescripti­ons for opioids for no clinical indication whatsoever. A dealer might drive long distances to obtain large quantities of opioids to resell at great profit in his hometown.

States vary widely in their incidence of opioid deaths. West Virginia has the severest problem with 41.5 deaths per 100,000 population, followed by New Hampshire (34.3), Kentucky and Ohio (29.9), and Rhode Island (28.2). Tennessee ranks ninth at 23.4. Wide variation in addiction and fatality rates are seen within states. Hot spots may be found in cities or in rural counties.

“Dreamland: The True Tale of America’s Opiate Epidemic” by Sam Quinones is a vital resource for comprehend­ing this deadly scourge.

Next: What can we do about the opioid epidemic?

Contact Clif Cleaveland at ccleavelan­d@timesfreep­ress.com.

 ??  ?? Dr. Clif Cleaveland
Dr. Clif Cleaveland

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