Posts Tagged ‘International Overdose Awareness Day’

Avoiding Overdoses

August 31: Overdose Awareness Day

 

 

 

“I’m not gonna overdose. I know my limits.”

I really hate hearing these words. Usually patients say this in response to my concerns about their pattern of drug use while I’m prescribing methadone or buprenorphine. But many patients feel like they are the experts. They can’t imagine making a deadly mistake with their drug use. But I’ve heard this phrase, or something close to it, from at least five people who are now dead from overdoses.

I was reminded of this situation after reading an article in the latest issue of Journal of Addiction Medicine. Najman et al. wrote an article titled “When Knowledge and Experience Do Not Help: A Study of Nonfatal Drug Overdoses.”

The author of the study looked at nonfatal overdoses in Australia in 2013, where overdose deaths have risen steadily since 2007. In that country, unlike the U.S., heroin use is declining while pharmaceutical opioid misuse is rising.

This study looked at nonfatal overdoses in people who inject drugs. These people, identified by the needle and syringe exchange programs in Australia, were interviewed about the circumstances surrounding these overdoses, in order to get a better understanding of the risks. A total of 50 people were interviewed for this study.

Most of these people were male, middle-aged, single, and unemployed. Nearly all were smokers. Half had a diagnosis of liver disease and almost all reported a mental health diagnosis. Most injected pharmaceutical opioids, though some also injected heroin and methamphetamine. These were very experienced drug users, with an average of 21 years of intravenous drug use.

Surprisingly, more than half of the study subjects were in some form of treatment for substance use disorder. This finding is contrary to other studies, which have found being in treatment lowered the risk for overdose. Around 46% were in medication-assisted treatment with either methadone or buprenorphine. However, some of the overdoses happened on days that the person missed dosing for some reason, and substituted another opioid such as heroin or fentanyl. Thirty-two percent of study subjects dosed with either methadone or buprenorphine in the twenty-four hours prior to experiencing their overdose.

Most of these overdoses happened in private homes, and around half received some sort of folk remedy for overdose such as being slapped, put into cold water, or being shaken. Naloxone kits weren’t routinely being distributed at the time of this study.

When asked about the cause of their overdose, many the subjects said they were impaired by alcohol or benzodiazepines. Over half said they used benzodiazepines within twenty-four hours of their overdose. Of the 50 subjects, 64% said they had been prescribed anti-anxiety medications sometime in the year prior to overdose, and 38% said they’d been prescribed sleeping pills. Another 36% said they’d been prescribed some sort of tranquilizer in the year prior to overdose. I’m assuming many of the subjects were prescribed more than one of these groups of medications.

Alcohol was not as prominent as sedative medications as contributory cause of overdose; only 34% of subjects said they had some amount of alcohol in the twenty-four hours prior to their overdose.

Over a third of subjects had used fentanyl, a very powerful opioid, leading up to the overdose.

The authors of the study concluded that these experienced drug users were aware of common risks for overdose, yet drug intoxication from sedatives such as alcohol or benzodiazepines may have clouded the user’s thinking when injecting opioids. They also found that unexpected availability of drugs contributed to overdoses.

It’s an interesting study, and a little disturbing to me, particularly the data about overdoses in people who were enrolled in medication-assisted treatments. It does underline the importance of daily dosing of MAT, and the importance of avoiding alcohol and benzodiazepines in patients on MAT.

And if you didn’t know…August 31 is International Overdose Awareness Day.