01/29/16

High on Overdoses

© diego_cervo | stockfresh.com
© diego_cervo | stockfresh.com

A recent CDC Morbidity and Mortality Weekly Report indicated that in 2014 more people in the U.S. died from drug overdoses than any other year on record. There were approximately one and a half times more deaths from drug overdoses than from motor vehicle accidents. Sixty-one percent (28,647) of all drug overdose deaths were from opioids; the rate has tripled since 2000. Drug overdose deaths from heroin have more than tripled in 4 years. The overdose death rate involving synthetic opioids almost doubled between 2013 and 2014.

Drug overdose deaths are up for both men and women; in adults of nearly all age groups. The following table presents data for all overdose deaths in 2013 and 2014; by sex; and by age group. The death rates per 100,000 are given, as is the percentage increase from 2013 to 2014.

2013

2014

% change 2013-2014

#

Rate

#

Rate

All

43,982

13.8

47,055

14.7

6.5%

Male

26,799

17.0

28,812

18.3

7.6%

Female

17,183

10.6

18,243

11.1

4.7%

Age Group (yrs)

0-14

105

0.2

109

0.2

0.0%

15-24

3,664

8.3

3,798

8.6

3.6%

25-34

8,947

20.9

10,055

23.1

10.5%

35-44

9,320

23.0

10,134

25.0

8.7%

45-54

12,045

27.5

12,263

28.2

2.5%

55-64

7,551

19.2

8,122

20.3

5.7%

≥65

2,344

5.2

2,568

5.6

7.7%

The authors of the Report said these figures indicate the opioid overdose epidemic is worsening. That almost seems to be an understatement. In a CDC Press Release Tom Frieden, the Director of the CDC, said the increased number of overdose deaths was alarming. “The opioid epidemic is devastating American families and communities. To curb these trends and save lives, we must help prevent addiction and provide support and treatment to those who suffer from opioid use disorders.” He added how important it was for law enforcement to intensify its efforts to reduce the availability of heroin, illegal fentanyl and other illegal opioids.

The 2014 data on overdose deaths showed there were two interrelated trends driving the increase: “a 15-year increase in overdose deaths involving prescription opioid pain relievers and a recent surge in illicit opioid overdose deaths, driven largely by heroin.” Natural and semisynthetic opioids, which include oxycodone and hydrocodone, continued to be the most common type of opioid involved in overdose deaths.

Drug overdose deaths involving heroin continued to climb sharply, with heroin overdoses more than tripling in 4 years. This increase mirrors large increases in heroin use across the country and has been shown to be closely tied to opioid pain reliever misuse and dependence. Past misuse of prescription opioids is the strongest risk factor for heroin initiation and use, specifically among persons who report past-year dependence or abuse. The increased availability of heroin, combined with its relatively low price (compared with diverted prescription opioids) and high purity appear to be major drivers of the upward trend in heroin use and overdose.

The 2014 rates were highest in these five states: West Virginia, New Mexico, New Hampshire, Kentucky and Ohio.  There were statistically significant increases in overdose deaths for fourteen states: Alabama, Georgia, Illinois, Indiana, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Mexico, North Dakota, Ohio, Pennsylvania and Virginia. Here is an interactive CDC map with this data.

Supporting these findings by the CDC, the National Institute on Drug Abuse (NIDA) reported in “Overdose Death Rates” that there was a 3.4-fold increase in the total number of overdose deaths from opioid pain relievers and a six-fold increase in the total number of overdose deaths from heroin from 2001 to 2014. The following charts are from the NIDA report.

prescription overdoses

heroin overdosesThe CDC pointed to four ways to prevent overdose deaths:

  • Limit initiation into opioid misuse and addiction. Opioid pain reliever prescribing has quadrupled since 1999. Providing health care professionals with additional tools and information—including safer guidelines for prescribing these drugs—can help them make more informed prescribing decisions.
  • Expand access to evidence-based substance use disorder treatment—including Medication-Assisted Treatment—for people who suffer from opioid use disorder.
  • Protect people with opioid use disorder by expanding access and use of naloxone—a critical drug that can reverse the symptoms of an opioid overdose and save lives.
  • State and local public health agencies, medical examiners and coroners, and law enforcement agencies must work together to improve detection of and response to illicit opioid overdose outbreaks to address this emerging threat to public health and safety.

Overdoses are not just a U.S. problem. The World Health Organization (WHO) estimated that globally 69,000 people die from opioid overdose each year. The World Drug Report 2014 estimated thee were 183,000 drug-related deaths worldwide in 2012. The main type of drug implicated in those deaths is opioids.

International Overdose Awareness Day reported that like the U.S. both the UK and Australia have had more deaths due to overdose than road fatalities. Nearly four Australians die each day from overdoses. Ontario, Canada had a 242% increase in fatal opioid overdoses between 1991 and 2010. European Union nations reported 6,100 overdose deaths in 2012. “It is estimated that more than 70,000 lives were lost to drug overdoses in European union countries in the first decade of the 21st Century.”

The CDC recommendations, for the most part, are ones I’d endorse. But like riders attached to big spending bills that have to be passed by Congress, the little phrase in the second recommendation “including Medication-Assisted Treatment” isn’t necessary. Medications like naloxone and naltrexone have a place in the expansion of substance use disorder treatment. But the phrase “medication-assisted treatment” refers to these medications as well as two opioids—methadone and buprenorphine—used in opioid substitution therapy. There is proposed legislation to expand the availability of buprenorphine, the Recovery for Addiction Treatment Act, in committee.

My objection is simple. You don’t “treat” an opioid use disorder with another opioid. You simply substitute dependence on one opioid for another.

I’ve regularly voiced concern over the treatment of opioid dependency with methadone and buprenorphine. Stop and think for a minute. Isn’t it reasonable to find that an individual who was physically addicted to heroin or prescription opioids would improve when they substitute ingesting enough methadone (a Schedule II controlled substance) or buprenorphine (a Schedule III controlled substance) to neutralize their physical withdrawal symptoms? The positive evidence base for opioid substitution treatment is based upon medically assisting an addict to begin using another opioid.

The “evidence-based” effectiveness of opioid “maintenance” treatment involves using these acknowledged addictive substances (methadone and burprenorphine) for weeks and even years to manage or stabilize an addiction to other opioids. There is more information on this issue in other articles I’ve written: “The Seduction of Opioid Substitution,” “Another Head for the Hydra,” and “A Double-Edged Drug.”

Another one of the drug types showing an increase in overdose deaths since 2001 in NIDA’s “Overdose Death Rates” was benzodiazepines. There has been a five-fold increase in the total number of deaths related to benzodiazepines. “Benzos” combined with opioids like methadone and buprenorphine have a synergistic effect and will give the person a heroin-like euphoria with the right drug cocktail. They also contribute to the higher rates of accidental overdose deaths. Expect the opioid overdose death rates to continue to rise even if the expansion of opioid substitution curtails overdose deaths from heroin.

11/30/15

The Seduction of Opioid Substitution

© Everett Collection Inc. | Dreamstime.con
© Everett Collection Inc. | Dreamstime.con

Heroin and prescription opioid abuse is a widely recognized public health crisis in the United States. In 2014, Attorney General Eric Holder referred to overdose deaths from heroin and other prescription pain-killers as an “urgent public health crisis.” The CDC reported that heroin use more than doubled among young adults between 18 and 25 over the past ten years. Forty-five percent of the people who use heroin are also addicted to prescription opioids.

A July 2015 “Morbidity and Mortality Weekly Report” report by the CDC recommended a comprehensive response to this public health crisis. The recommendations included: reducing inappropriate prescribing and use of opioids, stronger prescription drug monitoring programs, improved access to evidence-based substance abuse treatment—including medication-assisted treatment for opioid use disorders and greater access and training in the use of naloxone to treat overdoses. There have been several steps taken towards making these recommendations a reality. For example, on November 18, 2015, the FDA approved the first nasal spray version of naloxone hydrocloride: Narcan nasal spray. But not all of the proposals have the same potential to free the individuals caught up in the opioid health crisis.

And legislation has been introduced in the Senate to “combat the opioid crisis.” “The Opioid and Heroin Epidemic Emergency Supplemental Appropriations Act” would dedicate $600 million to this crisis. About $250 million would support programs related to prevention, treatment and recovery. Another $200 million would fund local and state law enforcement programs. Fifty million would go toward the CDC; and $35 million would go to NIDA to monitor prescription drug programs and do targeted research on drug addiction. “We are losing lives daily and our first responders, healthcare providers and criminal justice system are overwhelmed.”

I’m not a fan of increasing the use of opioid maintenance medications such as methadone and buprenorphine because they’re “treating” an opioid addiction with addictive opioids. And I’m concerned that in the midst of the existing health crisis, increased access to such treatment seems to be indiscriminately promoted as the most effective “treatment” approach. Sometimes the studies of medication-assisted treatment fail to consider the negative consequences to individuals when promoting opioid substitution treatment. And sometimes studies that suggest the “effectiveness” of opioid maintenance have a biased interpretation of their results. Often what emerges is a program for the social control of addicts rather than one that helps them establish and maintain a recovery-oriented lifestyle. Here is an example of one such study.

The National Institute on Drug Abuse (NIDA) turned a “Science Spotlight” on a new study that looked at intervention approaches for opioid dependent patients in emergency departments (ED). The idea is a good one—developing an intervention for ED medical personnel to help opioid-dependent patients get into treatment. But what it doesn’t make clear is that the “treatment” is primarily ongoing participation in opioid substitution treatment.

This study showed that patients who received buprenorphine, along with a brief intervention to discuss opioid use, and up to 12 weeks of buprenorphine maintenance, were more likely to get follow-up addiction treatment and had reduced self-reported illicit opioid use. In addition, they were also less likely to need inpatient addiction treatment services, saving treatment costs. This adds to the growing body of literature suggesting that opioid-dependent patients may benefit from immediate initiation of medication while awaiting more comprehensive substance use disorder treatment.

Let’s take a closer look at the study by D’Onofrio et al. to see if it truly lives up to the endorsement it received from NIDA.

The primary outcome was what the researchers called “engagement in treatment.” This was defined as being enrolled in and receiving formal addiction treatment on the 30th day following randomization. “Formal addiction treatment” could include a range of clinical settings such as an opioid treatment program, such as a methadone clinic, inpatient or residential treatment and outpatient services. The outpatient services could be intensive outpatient programs and “office-based physicians who prescribe buprenorphine or other forms of medication-assisted treatment.”

The patients in the buprenorphine group of the study received buprenorphine in the hospital and take-home doses of buprenorphine to last until a scheduled appointment in the hospital’s primary care center, which was within 72 hours of their placement in the group. The buprenorphine patients continued to receive office-based burprenorphine treatment for 10 weeks. At that time they were transferred to a maintenance treatment program or a clinician for ongoing treatment. If they preferred, they were offered a 2-week detoxification.

In the buprenorphine group, 78% of the patients were still engaged in treatment at the thirty-day follow-up. Only 37% of the referral only group and 45% of the brief intervention and referral group were engaged in treatment. But remember what the study considered as “treatment.” Any patient in the buprenorphine group who was still active in the free, office-based treatment after 30 days would have been counted as “still engaged in treatment.”  And they would have had another 40 days of free buprenorphine coming.

There was no information or data available on any of the groups beyond the thirty-day follow-up. So there was no clear indication if the patients in the buprenorphine group remained in treatment beyond the 10 weeks of the study’s subsidy of their substitution treatment. If the goal was to eventually engage individuals in more comprehensive treatment services, this “interim opioid agonist treatment,” should not have been lumped in with others as the outcome measure of “formal addiction treatment.” The failure of the researchers to distinguish this level of care from the others confounds the findings within the study’s primary outcome measure.

These patients had buprenorphine treatment initiated before they left the hospital. They also had an appointment scheduled within 3 days of their initial dose, with sufficient take-home medication to prevent any withdrawal until that appointment time. The other two groups did not receive any medication and so were on their own medically until they made an appointment and became engaged in treatment. They were sitting ducks for resuming the illicit opioid use that initially brought them to the ED. So the deck was staked in favor of the primary outcome measure.

Additionally, the buprenorphine care in the study was provided at no cost to the patients. The researchers dismissed this as a potential bias in their study, saying that 80% of the study’s patients had health insurance. However there are potential cost issues in health insurance despite the authors’ dismissal. Buprenorphine maintenance treatment is not always covered by insurance, as it is considered a “niche” medicine by insurance plans, as it is approved solely for the treatment of opioid dependence. Insurance companies predict that a limited number of their covered clients will need or use it. When there is coverage, there can be high co-pays. Insurance may pay for the prescription but not the office visits. Some Suboxone doctors don’t take insurance.

A secondary outcome measure for the study was self-reported use of illicit opioids. The buprenorphine group reported greater reductions in the mean number of days of illicit opioid use, from 5.4 days per week to .9 days per week. Patients in the referral group decreased from 5.4 days per week to 2.3 days; and the brief intervention group went from 5.6 days to 2.4 days. Remember that the buprenorphine group was treated with medication (buprenorphine) that forestalled withdrawal symptoms from the time they were placed in that treatment group while still in the hospital ED. Also, all three groups reduced their illicit opioid use over time. Comparing the buprenorphine treatment group to the others indicated that even with the medication, there were only 1.4 or 1.5 days less per week of illicit opioid use in the buprenorphine group.

Finally, the decreased use of inpatient treatment by the buprenorphine group was to be expected. The withdrawal symptoms that often precipitate detoxification or residential treatment were being addressed by the buprenorphine.

It has long seemed to me that the so-called harm reduction approach of opioid substitution treatment is more social control than actual treatment aimed at helping the individual addict to establish and then maintain sobriety. The positive outcomes and effects that are highlighted are typically things like lowered costs for residential treatment; lowered ED visits and costs; decreased drug-related crime.

There is proposed legislation, the Recovery Enhancement for Addiction Treatment Act, which would broaden the definition of a qualifying practitioner to include certain nurse practitioners or physician assistants and doctors with a board certification from the American Board of Addiction Medicine. The number of patients that a qualifying practitioner could dispense buprenorphine to within their first year would increase from 30 to 100. After one year, qualifying physicians could request approval to treat an unlimited number of patients under specified conditions. Writing about this proposed bill for the Huffington Post, James Charkis said:

The consensus among the medical establishment is that medically assisted treatments such as buprenorphine (and methadone), along with counseling, represent the best chance for addicts to gain a foothold on sobriety. Both medications can make withdrawal less painful and can significantly diminish further cravings for opioids — greatly reducing the chance of relapse.

One of the problems as I see it is that this “best chance” description is often mostly rhetoric. The “along with counseling” add-on becomes more window dressing than reality. Even where there is a tighter requirement for Suboxone patients to be active in some kind of counseling, individuals either fall through the cracks with counseling or just take up space because their presence in counseling is required for them to get what they really think will “treat” them—their Suboxone. Some individuals merely want Suboxone handy in case they can’t get any heroin or their opioid of choice to get high. Others want it to sell on the street to make some cash.

There is a place for opioid substitution treatment as we attempt to address the opioid health crisis. But the potential adverse consequences to the individual receiving the treatment need to be more clearly communicated. And studies of its “effectiveness” need to look beyond just the social benefits and the ability of opioid substitution treatment to seduce addicts into a more socially controlled form of opioid use.