The Association Between Self-Reported Anxiety and Retention in Opioid Agonist Therapy: Findings From a Canadian Pragmatic Trial

BACKGROUND

Prescription-type opioid use disorder (POUD) is often accompanied by comorbid anxiety, yet the impact of anxiety on retention in opioid agonist therapy (OAT) is unclear. Therefore, this study investigated whether baseline anxiety severity affects retention in OAT and whether this effect differs by OAT type (methadone maintenance therapy (MMT) vs. buprenorphine/naloxone (BNX)).

METHODS

This secondary analysis used data from a pan-Canadian randomized trial comparing flexible take-home dosing BNX and standard supervised MMT for 24 weeks. The study included 268 adults with POUD. Baseline anxiety was assessed using the Beck Anxiety Inventory (BAI), with BAI ≥ 16 indicating moderate-to-severe anxiety. The primary outcomes were retention in assigned and any OAT at week 24. In addition, the impact of anxiety severity on retention was examined, and assigned OAT was considered an effect modifier.

RESULTS

Of the participants, 176 (65%) reported moderate-to-severe baseline anxiety. In adjusted analyses, there was no significant difference in retention between those with BAI ≥ 16 and those with BAI < 16 assigned (29% vs. 28%; odds ratio (OR) = 2.03, 95% confidence interval (CI) = 0.94-4.40; P = 0.07) or any OAT (35% vs. 34%; OR = 1.57, 95% CI = 0.77-3.21; P = 0.21). In addition, there was no significant effect modification by OAT type for retention in assigned (P = 0.41) or any OAT (P = 0.71). In adjusted analyses, greater retention in treatment was associated with BNX (vs. MMT), male gender identity (vs. female, transgender, or other), enrolment in the Quebec study site (vs. other sites), and absence of a positive urine drug screen for stimulants at baseline.

CONCLUSIONS

Baseline anxiety severity did not significantly impact retention in OAT for adults with POUD, and there was no significant effect modification by OAT type. However, the overall retention rates were low, highlighting the need to develop new strategies to minimize the risk of attrition from treatment.

CLINICAL TRIAL REGISTRATION

This study was registered in ClinicalTrials.gov (NCT03033732).

"Will My Baby Be OK?" A Qualitative Analysis of Pregnant Women's Suboxone® Online Forum Posts

BACKGROUND

Intentional or accidental drug-overdose is a leading cause of mortality in U.S. women of child-bearing age. Opioid use during pregnancy is not only associated with maternal overdose, but with low birth weight at term and neonatal abstinence syndrome (NAS). Buprenorphine was approved as a medication for opioid use disorder (MOUD) in the United States in 2002 and is for many women, a preferred treatment option versus methadone. Buprenorphine is relatively safe during pregnancy and is associated with lower rates of NAS than methadone. Given the importance of MOUD during pregnancy, relatively little information exists regarding patients' questions and concerns about buprenorphine treatment, including the psychological challenges they face.

AIMS

The purpose of the study was to describe the perinatal concerns of women with opioid use disorder who posted to an online suboxone forum.

METHODS

Qualitative descriptive design to analyze some 170 posts from mothers with OUD to an online Suboxone^® support forum over the period 2016-2021.

RESULTS

The analysis of the interview data revealed 4 important themes: (a) Stigma resulting in self-deprecation, low self-esteem, and low self-efficacy; (b) stigma from family members and loved ones; (c) stigma from the medical profession; and (d) stigma from the community at-large (social stigma).

CONCLUSIONS

There is compelling evidence to emphasize the importance of open communication and support between medical personnel and patients to ensure optimal outcomes for mother and baby.

Management of kratom dependence with buprenorphine/naloxone in a veteran population

Background: Kratom is a substance that when ingested produces an opioid-like effect. As kratom continues to gain popularity, increasing numbers of cases of addiction, dependence, and adverse events have been reported, as well as an increase in mortality associated with its use. George E. Wahlen Department of Veterans Affairs Medical Center has been using buprenorphine/naloxone for the treatment of kratom withdrawal and dependence in both primary care and specialty addiction treatment settings in the Veteran population. Cases: We present three cases that describe the use of buprenorphine/naloxone for kratom dependence. For each case, we describe the withdrawal symptoms from kratom, induction and long-term maintenance on buprenorphine/naloxone in kratom dependence, the impact of polysubstance use disorders in management of kratom dependence, and the use of urine drug screens for kratom alkaloids during treatment. Discussion: This case series demonstrates that patients with kratom dependence can effectively be treated with buprenorphine/naloxone. It appears that it is safe to induce buprenorphine/naloxone as early as eight hours after last kratom use and maintenance dosing for kratom use was similar to maintenance doses used in opioid use disorder. Prolonged and continued withdrawal symptoms were reported despite treatment with buprenorphine/naloxone and multiple daily doses of up to 24mg per day may be beneficial for prolonged withdrawal symptoms and for cooccurring pain. Polysubstance use with kratom dependence may require higher levels of care and higher doses of buprenorphine/naloxone. Urine drug screens may be best practice for monitoring kratom alkaloids concentrations and facilities that utilize buprenorphine/naloxone to treat kratom dependence should have testing available. Further research is needed on the impact and the treatment of kratom dependence.

Microdosing and standard-dosing take-home buprenorphine from the emergency department: A feasibility study

OBJECTIVE

Emergency department (ED)-initiated buprenorphine may prevent overdose. Microdosing is a novel approach that does not require withdrawal, which can be a barrier to standard inductions. We aimed to evaluate the feasibility of an ED-initiated buprenorphine/naloxone program providing standard-dosing and microdosing take-home packages and of randomizing patients to either intervention.

METHODS

We broadly screened patients ≥18 years old for opioid use disorder at a large, urban ED. In a first phase, we provided consecutive patients with 3-day standard-dosing packages, and then we provided a subsequent group with 6-day microdosing packages. In a second phase, we randomized patients to standard dosing or microdosing. We attempted 7-day telephone follow-ups and 30-day in-person community follow-ups. The primary feasibility outcome was number of patients enrolled and accepting randomization. Secondary outcomes were numbers screened, follow-up rates, and 30-day opioid agonist therapy retention.

RESULTS

We screened 3954 ED patients and identified 94 with opioid use disorders. Of the patients, 26 (27.7%) declined participation: 10 identified a negative prior experience with buprenorphine/naloxone as the reason, 5 specifically cited precipitated withdrawal, and none cited randomization. We enrolled 68 patients. A total of 14 left the ED against medical advice, 8 were excluded post-enrollment, 21 received standard dosing, and 25 received microdosing. The 7-day and 30-day follow-up rates were 9/46 (19.6%) and 15/46 (32.6%), respectively. At least 5/21 (23.8%) provided standard dosing and 8/25 (32.0%) provided microdosing remained on opioid agonist therapy at 30 days.

CONCLUSIONS

ED-initiated take-home standard-dosing and microdosing buprenorphine/naloxone programs are feasible, and a randomized controlled trial would be acceptable to our target population.