Publications by authors named "Ryan Carpenter"

Introduction: Rates of opioid overdose deaths (OOD) have increased since the introduction of illicitly manufactured fentanyl in the U.S. drug supply.

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Objective: Substance use among individuals receiving prescription opioids for pain may be associated with poorer functioning. The purpose of this study was to examine whether the use of substances (ie, alcohol, marijuana, or tobacco) among individuals prescribed opioids for pain management was associated with pain, psychiatric disorders, and opioid misuse.

Methods: Patients with non-cancer pain and a new opioid prescription were recruited from 2 health systems.

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Background: Insomnia symptoms are pervasive and persistent in alcohol use disorder (AUD), though little is known about the mechanisms that underlie this association. We previously found that cognitive behavioral therapy for insomnia (CBT-I) reduced alcohol-related problems among veterans by improving insomnia severity (NCT03806491). In this planned secondary analysis of the same clinical trial data, we tested negative emotionality as one potential mechanism to explain this effect.

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Background: Up to 80% of patients in the United States report dissatisfaction with pain management following orthopaedic surgery. Inadequate pain management is linked to negative outcomes, including increased costs, readmission rates, and chronic pain risk. Traditional pain management protocols often emphasise the biological components of pain, overlooking psychological and social.

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Chronic low back pain (CLBP) is a biopsychosocial phenomenon involving complex relationships between pain and psychosocial factors. In preregistered analyses, we examined dynamic relationships between pain and negative affect among individuals with CLBP ( 87). We found that increased negative affect was concurrently and prospectively associated with increased pain for individuals on average.

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Missouri's Overdose Field Report (ODFR) is a community-based reporting system which intends to capture overdoses which may not be otherwise recorded. Describe the factors related to non-fatal overdoses reported to Missouri's ODFR. This study used a descriptive epidemiological approach to examine the demographics and circumstances of overdoses reported to the ODFR.

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Article Synopsis
  • Alcohol is a significant factor in many deaths, with a striking increase in alcohol-involved fatalities in the St. Louis region, particularly between 2011 and 2022, where these deaths rose by over 54%.
  • A study of 7,641 substance-involved deaths revealed that 26.29% included alcohol, with overdose deaths being the most prevalent, particularly those involving opioids and benzodiazepines.
  • The data indicated that the likelihood of alcohol involvement in deaths increases with age and is notably higher in males, underscoring the need for targeted research and prevention strategies for alcohol-related fatalities in diverse demographic groups.
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  • PTSD is common among patients with chronic pain and negatively affects their pain management and increases opioid use.
  • In a study of 808 participants, those with high emotional support showed a lower association between PTSD and continued opioid use compared to those with lower emotional support.
  • The findings suggest that enhancing emotional support for patients with chronic pain and PTSD could potentially reduce the need for sustained opioid treatment.
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Article Synopsis
  • * Research suggests that biological factors, like altered brain responses to pain and low levels of natural painkillers (endogenous opioids), may explain the link between BPD and pain dysregulation.
  • * The study emphasizes that emotional regulation plays a crucial role in how physical pain is experienced in BPD, affected by psychological factors and hindrances in patient-provider relationships that can complicate treatment for chronic pain.
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Background: Condylar fractures are a major cause of morbidity and mortality in Thoroughbred racehorses. Condylar fractures have a variety of fracture configurations that suggest there may be differences in aetiopathogenesis.

Objective: To determine if exercise history differs with condylar fracture location in a population of Thoroughbred racehorses.

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Background: Drinking commonly occurs in social settings and may bolster social reinforcement. Laboratory studies suggest that subjective effects and mood are mechanisms through which the social context influences alcohol consumption. Ecological momentary assessment (EMA) may be useful for extending these findings to the natural environment.

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Objective: Alcohol and cannabis are often perceived as pain-relieving. However, minimal work has examined whether people use and co-use these substances following pain in daily life.

Method: Forty-six adults reporting weekly use of alcohol and/or cannabis completed a 60-day ecological momentary assessment protocol, answering at least four daily reports on their alcohol and cannabis use and pain ( = 10,769 over 2,656 days).

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Objective: Negative reinforcement models suggest that negative affect should predict event-level substance use, however, supporting daily-life evidence is lacking. One reason may be an emphasis in ecological momentary assessment (EMA) research on use behavior, which is subject to contextual and societal constraints that other substance outcomes, such as craving, may not be subject to. Therefore, the present study tested momentary, within-person reciprocal relations among negative affect and craving for alcohol and cannabis in daily life.

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Introduction: Rate of alcohol consumption, the speed with which people drink, has been linked to a range of outcomes, including alcohol use disorder symptoms and increased positive affect. However, minimal work has identified who is most likely to drink at elevated rates. Impulsivity is associated with increased attention to positive reinforcers specifically (e.

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Retrospective cohort studies have consistently observed that long-term prescription opioid use is a risk factor for new major depressive episodes. However, prospective studies are needed to confirm these findings and establish evidence for causation. The Prescription Opioids and Depression Pathways cohort study is designed for this purpose.

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Purpose Of Review: Despite significant negative outcomes, the co-occurrence of personality disorders (PDs) and substance use disorders (SUDs) continues to be underrecognized, and the mechanisms contributing to this co-occurrence remain unclear. This review summarizes recent work on PD-SUD co-occurrence, with a focus on borderline and antisocial PDs, general substance use patterns among those with PDs, and the association of personality traits with SUDs.

Recent Findings: The prevalence of co-occurring PD-SUD is generally high, with estimates ranging depending on the type of PD and SUD, the population assessed, and the sampling methods and measures used.

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Objectives: To assess 18F-sodium fluoride (18F-NaF) positron emission tomography (PET) findings associated with metacarpal/metatarsal condylar fractures at the time of fracture repair and through healing.

Study Design: Prospective descriptive study.

Animals: Fourteen Thoroughbred racehorses.

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Background: Since 2017, Missouri has increased access to medication for opioid use disorder (OUD) within the State's publicly-funded substance use specialty treatment system through a "Medication First" approach. Results from a statewide assessment of the first year of State Targeted Response implementation showed increases and improvements in overall treatment admissions, medication utilization, and treatment retention. The current study, which focuses on the St.

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Opioid-involved overdose deaths continue to climb, in part because of suboptimal access to and retention on medications for opioid use disorder (MOUD), including buprenorphine. Low barrier buprenorphine treatment aims to reduce or eliminate the threshold for getting and staying on medication by providing immediate and long-term access to buprenorphine without strict rules or requirements. This study examines associations between medical providers' beliefs about treating people with opioid use disorder (OUD) and naloxone access with their self-reported low-barrier buprenorphine prescribing practices.

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Article Synopsis
  • This study looked at how people feel and how it relates to how much alcohol they drink.
  • Researchers found that people do not drink more when they’re feeling sad or upset, but they drink more when they're feeling happy.
  • The results are important because they challenge the idea that people drink mainly to cope with negative feelings, and now researchers want to look deeper into this topic.
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Importance: Three of 4 adults in treatment for alcohol use disorder (AUD) report symptoms of insomnia. Yet the first-line treatment for insomnia (cognitive behavioral therapy for insomnia, CBT-I) is often delayed until abstinence is established.

Objective: To test the feasibility, acceptability, and preliminary efficacy of CBT-I among veterans early in their AUD treatment and to examine improvement in insomnia as a mechanism for improvement in alcohol use outcomes.

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Although frequently hypothesized, the evidence for associations between affect and marijuana use in everyday life remains ambiguous. Inconsistent findings across existing work may be due, in part, to differences in study design and analytic decisions, such as study inclusion criteria, the operationalization of affect, or the timing of affect assessment. We used specification curves to assess the robustness of the evidence for affect predicting same-day marijuana use and marijuana use predicting next-day affect across several hundred models that varied in terms of decisions that reflect those typical in this literature (e.

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Background: Prescription opioids remain a primary treatment option for patients with chronic low back pain. However, little research has examined how patients take opioids in daily life. Behavioral economics suggest that the environmental context may contribute to patients' decisions around opioid use.

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