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1.
Psychiatr Serv ; 75(6): 580-588, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38347814

ABSTRACT

The HEALing (Helping to End Addiction Long-term) Communities Study (HCS) aims to test the effectiveness of the Communities That HEAL intervention in decreasing opioid overdose deaths in 67 communities across four U.S. states. This intervention enlists a collaborative team of researchers, academic experts, and community coalitions to select and implement interventions from a menu of evidence-based practices, including medications for opioid use disorder (MOUD). The HCS's New York team developed an integrated network systems (INS) approach with a mapping tool to coach coalitions in the selection of strategies to enhance medication treatment. With the INS approach, community coalitions develop a map of service delivery venues in their local county to better engage people with medication treatment wherever this need arises. The map is structured around core services that can provide maintenance MOUD and satellite services, which include all settings where people with opioid use disorder are encountered and can be identified, possibly given medication, and referred to core programs for ongoing MOUD care. This article describes the rationale for the INS mapping tool, with a discussion framed by the consolidated framework for implementation research, and provides a case example of its application.


Subject(s)
Opioid-Related Disorders , Humans , Opioid-Related Disorders/drug therapy , Opiate Substitution Treatment/methods , United States , Opiate Overdose/drug therapy , Analgesics, Opioid/therapeutic use
2.
Article in English | MEDLINE | ID: mdl-36643788

ABSTRACT

Background: Expanding access to naloxone is one of the most impactful interventions in decreasing opioid-related mortality. However, state distribution rates of naloxone are insufficient to meet community need. The current study sought to better understand this gap by focusing on state policies that may facilitate or impede naloxone distribution in four states highly impacted by fatal opioid overdoses - Kentucky, Massachusetts, New York, and Ohio. Methods: We provide a descriptive analysis of the policy landscape impacting naloxone distribution through pharmacy and community channels in the four states participating in the HEALing Communities Study (HCS). Publicly available data and the expertise of the research team were used to describe each state's naloxone access laws (NALs), Medicaid coverage of naloxone, and community overdose education and naloxone distribution infrastructure. Data presented in this study represent the most current policy landscape through September 2022. Results: Variation exists between specific components of the NALs of each state, the structure of Medicaid coverage of naloxone, and the community distribution infrastructure networks. Massachusetts and New York have a statewide standing order, but other states use different strategies short of a statewide standing order to expand access to naloxone. Quantity limits specific to naloxone may limit access to Medicaid beneficiaries in some states. Conclusion: States participating in the HCS have developed innovative but different mechanisms to ensure naloxone access. Policies were dynamic and moved towards greater access. Research should consider the policy landscape in the implementation and sustainability of interventions as well as the analysis of outcomes.

3.
Harm Reduct J ; 18(1): 115, 2021 11 17.
Article in English | MEDLINE | ID: mdl-34789270

ABSTRACT

Provision of sterile syringes is an evidence-based strategy of reducing syringe sharing and reusing and yet, access to sterile syringes through pharmacies and syringe exchange programs (SEPs) in the United States remains inadequate. This nationally representative study examined associations between obtaining syringes from pharmacies, SEPs, and sterilizing syringes with bleach and risk of syringe borrowing, lending and reusing syringes in a pooled cross-sectional dataset of 1737 PWID from the 2002-2019 National Survey on Drug Use and Health. Logistic regression was used to produce odds ratios (OR) of the odds of injection drug behaviors after adjusting for obtaining syringes from SEPs, pharmacies, the street, and other sources and potential confounders of race, ethnicity, sex, education, and insurance coverage. Obtaining syringes through SEPs was associated with lower odds of borrowing (OR = .4, CI95% = .2, .9, p = .022) and reusing syringes (OR = .3, CI95% = .2, .6, < .001) compared to obtaining syringes on the street. Obtaining syringes from pharmacies was associated with lower odds of borrowing (OR = .5, CI95% = .3, .9, p = .037) and lending (OR = .5 CI95% = .3, .9, p = .020) syringes. Using bleach to clean syringes was associated with increased odds of borrowing (OR = 2.0, CI95% = 1.3, 3.0, p = .002), lending (OR = 2.0, CI95% = 1.3, 3.0, p = .002) and reusing syringes (OR = 2.4, CI95% = 1.6, 3.6, p < .001). Our findings support provision of syringes through pharmacies and SEPs as a gold-standard strategy of reducing sharing and reuse of syringes in the US.


Subject(s)
HIV Infections , Pharmaceutical Preparations , Pharmacies , Pharmacy , Substance Abuse, Intravenous , Cross-Sectional Studies , Humans , Needle Sharing , Needle-Exchange Programs , Substance Abuse, Intravenous/epidemiology , Syringes , United States/epidemiology
4.
Drug Alcohol Depend ; 222: 108675, 2021 05 01.
Article in English | MEDLINE | ID: mdl-33757707

ABSTRACT

Community-driven responses are essential to ensure the adoption, reach and sustainability of evidence-based practices (EBPs) to prevent new cases of opioid use disorder (OUD) and reduce fatal and non-fatal overdoses. Most organizational approaches for selecting and implementing EBPs remain top-down and individually oriented without community engagement (CE). Moreover, few CE approaches have leveraged systems science to integrate community resources, values and priorities. This paper provides a novel CE paradigm that utilizes a data-driven and systems science approach; describes the composition, functions, and roles of researchers in CE; discusses unique ethical considerations that are particularly salient to CE research; and provides a description of how systems science and data-driven approaches to CE may be employed to select a range of EBPs that collectively address community needs. Finally, we conclude with scientific recommendations for the use of CE in research. Greater investment in CE research is needed to ensure contextual, equitable, and sustainable access to EBPs, such as medications for OUD (MOUD) in communities heavily impacted by the opioid epidemic. A data-driven approach to CE research guided by systems science has the potential to ensure adequate saturation and sustainability of EBPs that could significantly reduce opioid overdose and health inequities across the US.


Subject(s)
Drug Overdose , Opiate Overdose , Opioid-Related Disorders , Analgesics, Opioid/therapeutic use , Drug Overdose/drug therapy , Drug Overdose/prevention & control , Evidence-Based Practice , Humans , Opioid-Related Disorders/drug therapy , Opioid-Related Disorders/epidemiology
5.
AIDS Behav ; 25(4): 1047-1062, 2021 Apr.
Article in English | MEDLINE | ID: mdl-33057892

ABSTRACT

People in community corrections have rates of HIV and sexual risk behaviors that are much higher than the general population. Prior literature suggests that criminal justice involvement is associated with increased sexual risk behaviors, yet these studies focus on incarceration and use one-sided study designs that only collect data from one partner. To address gaps in the literature, this study used the Actor Partner-Interdependence Model with Structural Equation Modeling (SEM), to perform a dyadic analysis estimating individual (actor-only) partner-only, and dyadic patterns (actor-partner) of criminal justice involvement and greater sexual risks in a sample of 227 men on probation and their intimate partners in New York City, United States. Standard errors were bootstrapped with 10,000 replications to reduce bias in the significance tests. Goodness of fit indices suggested adequate or better model fit for all the models. Significant actor-only relationships included associations between exposures to arrest, misdemeanor convictions, time spent in jail or prison, felony convictions, lifetime number of incarceration events, prior conviction for disorderly conduct and increased sexual risk behaviors. Partner only effects included significant associations between male partners conviction for a violent crime and their female partners' sexual risk behaviors. Men's encounters with police and number of prior misdemeanors were associated with their own and intimate partners' sexual risk behaviors. Women's prior arrest was associated with their own and intimate partners' sexual risk behaviors. The results from the present study suggest that men on probation and their intimate partners' criminal justice involvement are associated with increased engagement in sexual risk behaviors. It is necessary to conduct greater research into developing dyadic sexual risk reduction and HIV/STI prevention interventions for people who are involved in the criminal justice system.


Subject(s)
HIV Infections , Pharmaceutical Preparations , Sexually Transmitted Diseases , Criminal Law , Female , HIV Infections/epidemiology , HIV Infections/prevention & control , Humans , Male , New York City/epidemiology , Policy , Risk-Taking , Sexual Behavior , Sexual Partners , United States
6.
Drug Alcohol Depend ; 217: 108326, 2020 12 01.
Article in English | MEDLINE | ID: mdl-33059200

ABSTRACT

BACKGROUND: The implementation of evidence-based practices to reduce opioid overdose deaths within communities remains suboptimal. Community engagement can improve the uptake and sustainability of evidence-based practices. The HEALing Communities Study (HCS) aims to reduce opioid overdose deaths through the Communities That HEAL (CTH) intervention, a community-engaged, data-driven planning process that will be implemented in 67 communities across four states. METHODS: An iterative process was used in the development of the community engagement component of the CTH. The resulting community engagement process uses phased planning steeped in the principles of community based participatory research. Phases include: 0) Preparation, 1) Getting Started, 2) Getting Organized, 3) Community Profiles and Data Dashboards, 4) Community Action Planning, 5) Implementation and Monitoring, and 6) Sustainability Planning. DISCUSSION: The CTH protocol provides a common structure across the four states for the community-engaged intervention and allows for tailored approaches that meet the unique needs or sociocultural context of each community. Challenges inherent to community engagement work emerged early in the process are discussed. CONCLUSION: HCS will show how community engagement can support the implementation of evidence-based practices for addressing the opioid crisis in highly impacted communities. Findings from this study have the potential to provide communities across the country with an evidence-based approach to address their local opioid crisis; advance community engaged research; and contribute to the implementation, sustainability, and adoption of evidence-based practices. TRIAL REGISTRATION: ClinicalTrials.gov (NCT04111939).


Subject(s)
Community Participation , Evidence-Based Practice/methods , Opiate Overdose/prevention & control , Clinical Trials as Topic , Humans
7.
Drug Alcohol Depend ; 217: 108325, 2020 12 01.
Article in English | MEDLINE | ID: mdl-33091842

ABSTRACT

BACKGROUND: The number of opioid-involved overdose deaths in the United States remains a national crisis. The HEALing Communities Study (HCS) will test whether Communities That HEAL (CTH), a community-engaged intervention, can decrease opioid-involved deaths in intervention communities (n = 33), relative to wait-list communities (n = 34), from four states. The CTH intervention seeks to facilitate widespread implementation of three evidence-based practices (EBPs) with the potential to reduce opioid-involved overdose fatalities: overdose education and naloxone distribution (OEND), effective delivery of medication for opioid use disorder (MOUD), and safer opioid analgesic prescribing. A key challenge was delineating an EBP implementation approach useful for all HCS communities. METHODS: A workgroup composed of EBP experts from HCS research sites used literature reviews and expert consensus to: 1) compile strategies and associated resources for implementing EBPs primarily targeting individuals 18 and older; and 2) determine allowable community flexibility in EBP implementation. The workgroup developed the Opioid-overdose Reduction Continuum of Care Approach (ORCCA) to organize EBP strategies and resources to facilitate EBP implementation. CONCLUSIONS: The ORCCA includes required and recommended EBP strategies, priority populations, and community settings. Each EBP has a "menu" of strategies from which communities can select and implement with a minimum of five strategies required: one for OEND, three for MOUD, and one for prescription opioid safety. Identification and engagement of high-risk populations in OEND and MOUD is an ORCCArequirement. To ensure CTH has community-wide impact, implementation of at least one EBP strategy is required in healthcare, behavioral health, and criminal justice settings, with communities identifying particular organizations to engage in HCS-facilitated EBP implementation.


Subject(s)
Evidence-Based Practice , Opiate Overdose/prevention & control , Analgesics, Opioid/therapeutic use , Clinical Trials as Topic , Continuity of Patient Care , Delivery of Health Care , Drug Overdose/drug therapy , Humans , Naloxone/therapeutic use , Opioid-Related Disorders/drug therapy , United States , United States Department of Veterans Affairs
8.
Sci Rep ; 10(1): 14366, 2020 09 01.
Article in English | MEDLINE | ID: mdl-32873830

ABSTRACT

Increasing human activity along the coast has amplified the extinction risk of inshore delphinids. Informed selection and prioritisation of areas for the conservation of inshore delphinids requires a comprehensive understanding of their distribution and habitat use. In this study, we applied an ensemble species distribution modelling approach, combining results of six modelling algorithms to identify areas of high probability of occurrence of the globally Vulnerable Australian humpback dolphin in northern Ningaloo Marine Park (NMP), north-western Australia. Model outputs were based on sighting data collected during systematic, boat-based surveys between 2013 and 2015, and in relation to various ecogeographic variables. Water depth and distance to coast were identified as the most important variables influencing dolphin presence, with dolphins showing a preference for shallow waters (5-15 m) less than 2 km from the coast. Areas of high probability (> 0.6) of dolphin occurrence were primarily (90%) in multiple use areas where extractive human activities are permitted, and were poorly represented in sanctuary (no-take) zones. This spatial mismatch emphasises the need to reassess for future spatial planning and marine park management plan reviews for NMP. Shallow, coastal waters identified here should be considered priority areas for the conservation of this Vulnerable species.


Subject(s)
Animal Distribution/physiology , Dolphins/physiology , Ecosystem , Endangered Species , Algorithms , Animals , Bays , Human Activities , Humans , Models, Statistical , Population Dynamics , Seasons , Western Australia
9.
J Addict Dis ; 38(1): 1-18, 2020.
Article in English | MEDLINE | ID: mdl-31821129

ABSTRACT

The following study investigates factors associated with discharge from OAT due to incarceration in a sample of 64,331 discharges in the United States. Multinomial regression investigated the association between demographic factors, prior arrest, referral source (i.e criminal justice agency) intravenous drug use, types of drug used, length of prior treatment and discharge due to incarceration compared to completing treatment or discharge due to other reasons. African Americans, Latinx, and Native Americans were at greater risk of discharge due to incarceration compared to whites. Referral to OAT from criminal justice agencies and self-referral was associated with increased risk of discharge from OAT due to incarceration compared to referral from a health care provider. Substance use of heroin, benzodiazepines, synthetic opioids, cocaine and non-prescription use of methadone were associated with discharge due to incarceration. Risk of discharge due to incarceration was higher for patients who reported intravenous drug use and who reported a co-morbid psychiatric problem. These findings enrich a nascent body of literature on mechanisms associated with attrition from OAT due to incarceration and emphasize the need for programs to divert people with OUD from incarceration to increase engagement and retention in OAT.


Subject(s)
Narcotic Antagonists/therapeutic use , Patient Acceptance of Health Care/statistics & numerical data , Patient Discharge/statistics & numerical data , Prisoners/psychology , Prisoners/statistics & numerical data , Adolescent , Adult , Comorbidity , Databases, Factual , Diagnosis, Dual (Psychiatry) , Female , Humans , Male , Middle Aged , Opioid-Related Disorders/psychology , Opioid-Related Disorders/therapy , Patient Acceptance of Health Care/psychology , Risk Factors , United States , Young Adult
10.
PLoS One ; 14(12): e0225854, 2019.
Article in English | MEDLINE | ID: mdl-31881035

ABSTRACT

BACKGROUND: This study examines the relationship between experiencing intimate partner violence (IPV), exposure to prior childhood adversity, lifetime adverse experiences, drug-related relationship dependencies with intimate partners and overdose, hospitalization for drug use, friends and family members who overdosed and witnessing overdose. METHODOLOGY: This paper included a sample of 201 women who use drugs in heterosexual relationships with criminal justice-involved men in New York City. We included measures of experiencing overdose, hospitalization for drug use, witnessing overdose, and having friends and family who overdosed. Intimate partner violence consisted of either 1) none/verbal only, 2) moderate and 3) severe abuse. Dichotomous indicators of drug-related relationship dependencies included financial support, drug procurement, splitting and pooling drugs. A scale measured cumulative exposure to childhood adversity and lifetime exposures to adverse events. This paper hypothesized that experiencing moderate and severe IPV, drug-related dependencies and exposure to prior childhood and lifetime adversity would be associated with a greater risk of experiencing overdose, hospitalization for drug use, witnessing overdose and having friends and family members who overdosed. Generalized linear modeling with robust variance estimated relative risk ratios that accounted for potential bias in confidence intervals and adjusted for race, ethnicity, education and marital status. RESULTS: We found experiencing moderate or severe IPV was associated with ever being hospitalized for drug use and having a family member who experienced overdose. Experiencing moderate IPV was associated with increased risk of witnessing overdose, Partner drug dependencies were associated with overdose, ever being hospitalized for drug use, witnessing overdose, and having a family member or friend who experienced overdose. Childhood and lifetime adversity exposures were significantly associated with increased risk of overdose, ever being hospitalized for drug use, ever witnessing overdose and having a friend and family member who overdosed. CONCLUSION: Findings underscore the intersection of experiencing IPV and drug-related relationship dependencies, childhood adversity and lifetime adversity in shaping experiences of and witnessing overdose among women who use drugs. They highlight the urgent need to address IPV, adversity experiences and drug-related relationship dependencies in overdose prevention for women who use drugs.


Subject(s)
Drug Overdose/psychology , Interpersonal Relations , Intimate Partner Violence/psychology , Sexual Partners , Adult , Child , Child Abuse/psychology , Female , Hospitalization , Humans , Illicit Drugs , Multivariate Analysis , Risk Factors , Socioeconomic Factors
11.
J Psychoactive Drugs ; 51(4): 360-370, 2019.
Article in English | MEDLINE | ID: mdl-31056042

ABSTRACT

Over the last decade, New York State has experienced one of the greatest increases in opioid overdose deaths in the United States, particularly from heroin and synthetic opioids. This study investigated spatial patterns in the distribution of county-level rates of overdose deaths in New York State and associations between prescriptions for opioid pain relievers, race, and overdose deaths from 2013-2015. Global and local Moran's I tests for spatial autocorrelation examined Bayesian smoothed rates of overdose for clusters of counties with high and low rates of overdose mortality. Getis Ord* analyses identified local hotspots of high and low clusters of overdose. Model performance indicators selected the best-fitting spatial regression model to examine associations between prescriptions for opioid pain relievers, race/ethnicity (non-Hispanic White, Black, and Hispanic) after adjusting for spatial dependence in the data. Socio-demographic characteristics of clusters were examined. Findings suggest rates of opioid overdose deaths are clustered in New York. Rates of prescription opioids were associated with rates of overdose from any opioid, prescription pain relievers, and synthetic opioids. Greater populations of African Americans were associated with greater rates of heroin overdose death rates. Findings from this study inform public health opioid overdose prevention interventions and policies.


Subject(s)
Analgesics, Opioid/adverse effects , Drug Overdose/mortality , Drug Utilization/statistics & numerical data , Ethnicity/statistics & numerical data , Geography, Medical/statistics & numerical data , Models, Statistical , Prescription Drugs/adverse effects , Bayes Theorem , Databases, Factual/statistics & numerical data , Humans , New York/epidemiology
12.
Drug Alcohol Depend ; 192: 294-302, 2018 11 01.
Article in English | MEDLINE | ID: mdl-30304712

ABSTRACT

BACKGROUND: Multiple drug and sexual risk behaviors among people who inject drugs (PWID) in intimate relationships increase the risk of HIV and HCV transmission. Using data on PWID in intimate partnerships in Almaty, Kazakhstan, this study performed latent class analysis (LCA) on drug and sexual risk behaviors and estimated associations between dyadic relationship factors and membership in latent classes. METHODS: LCA was performed on a sample of 510 PWID (181-females/FWID, 321-males/MWID) to identify levels of drug and sexual risk behaviors. Generalized structural equation modeling with multinomial regressions estimated associations between relationship factors (length risk reduction communication, risk reduction self-efficacy) and class membership after adjusting for substance use severity, overdose, depression, binge drinking, intimate partner violence, structural factors, and sociodemographic characteristics. Models were sex-stratified to include FWID and PWID. RESULTS: A 3-class model best fit the data and consisted of low, medium, and high-risk classes. GSEM found that greater injection self-efficacy was associated with a lower likelihood of membership in the high-risk class for PWID and FWID. For MWID, greater length of the relationship was associated with a lower likelihood of membership in the medium-risk class. Greater relationship communication was associated with increased risk of membership in the high-risk latent class for MWID. CONCLUSIONS: Future research must investigate if increasing risk reduction and safe sex self-efficacy could reduce drug and sexual risk behaviors and HIV transmission among PWID and their intimate partners. Interventions are needed that reduce power inequities within relationships as a method of increasing self-efficacy, particularly among women.


Subject(s)
Interpersonal Relations , Latent Class Analysis , Risk-Taking , Sexual Behavior/psychology , Substance Abuse, Intravenous/epidemiology , Substance Abuse, Intravenous/psychology , Adult , Female , HIV Infections/epidemiology , HIV Infections/prevention & control , HIV Infections/psychology , Humans , Kazakhstan/epidemiology , Male , Risk Reduction Behavior , Safe Sex , Sexual Partners
13.
Int J STD AIDS ; 28(2): 160-169, 2017 02.
Article in English | MEDLINE | ID: mdl-26887890

ABSTRACT

Although the incidence of HIV among women on probation, parole and alternatives to incarceration programs is significant to public health, drivers of this concentrated epidemic among women under community corrections remain understudied. This study examined prevalence of HIV and sexually transmitted infections and the associations between substance use, socio-demographic factors and the prevalence of biologically-confirmed HIV and other sexually transmitted infections among a sample of 337 substance-using women recruited from community correction sites in New York City. Prevalence of HIV was 13% and sexually transmitted infections was 26% ( Chlamydia, trachomatis and Neisseria gonorrhea). After adjusting for covariates, HIV-positive women were 1.42 times more likely to use crack/cocaine than HIV-negative women (95% CI = 1.05-1.92). HIV-positive women were 25% less likely than HIV-negative women to report any unprotected vaginal and anal sex with their main partner (95% CI = 0.57-0.99). They were 70% less likely than HIV-negative women to report unprotected vaginal sex with a non-paying casual partner (95% CI = 0.1-0.9) and 22% less likely to report unprotected vaginal sex across all partners (95% CI = 0.61-0.99). Community corrections settings may be optimal venues to launch HIV/sexually transmitted infections prevention that have potential to reach and engage an ever-growing number of substance-using women.


Subject(s)
HIV Infections/epidemiology , Prisoners/statistics & numerical data , Sexually Transmitted Diseases/epidemiology , Substance Abuse, Intravenous/epidemiology , Unsafe Sex , Adult , Chlamydia trachomatis , Female , HIV Infections/diagnosis , Humans , Neisseria gonorrhoeae , New York City/epidemiology , Prevalence , Risk Factors , Risk-Taking , Sexual Behavior , Sexually Transmitted Diseases/diagnosis , Socioeconomic Factors , Substance Abuse, Intravenous/complications , Young Adult
14.
J Subst Use ; 22(1): 53-59, 2017.
Article in English | MEDLINE | ID: mdl-30220879

ABSTRACT

BACKGROUND: Growing rates of HIV and high rates of injection drug use in Kazakhstan call for examining access to testing and treatment among people who inject drugs and their intimate partners. OBJECTIVES: We examine how access to health and drug treatment services as well as risk environment factors are associated with ever being tested for HIV and ever receiving any general HIV medical care among 728 male and female intimate partners where at least one partner injects drugs. METHODS: Multivariate random effects logistic regression with random effects for couple were conducted to examine associations between access to health and drug treatment services, risk environment factors, and HIV testing and HIV medical care outcomes. RESULTS: Analyses indicate that accessing needle exchange services and having a regular physician were associated both with access to HIV testing and HIV medical care. Receiving drug treatment was associated with accessing HIV testing but not HIV medical care. Being arrested and charged with a criminal offense was also associated with accessing HIV testing but not HIV medical care. CONCLUSIONS/IMPORTANCE: Study findings highlight the need for increased scale-up of HIV testing efforts, as well as integrated HIV treatment and care in Kazakhstan.

15.
PLoS One ; 11(3): e0151278, 2016.
Article in English | MEDLINE | ID: mdl-26967159

ABSTRACT

OBJECTIVES: We examined whether mobility, migrant status, and risk environments are associated with sexually transmitted infections (STIs) and HIV risk behaviors (e.g. sex trading, multiple partners, and unprotected sex). METHODS: We used Respondent Driven Sampling (RDS) to recruit external male migrant market vendors from Kyrgyzstan, Uzbekistan, and Tajikistan as well internal migrant and non-migrant market vendors from Kazakhstan. We conducted multivariate logistic regressions to examine the effects of mobility combined with the interaction between mobility and migration status on STIs and sexual risk behaviors, when controlling for risk environment characteristics. RESULTS: Mobility was associated with increased risk for biologically-confirmed STIs, sex trading, and unprotected sex among non-migrants, but not among internal or external migrants. Condom use rates were low among all three groups, particularly external migrants. Risk environment factors of low-income status, debt, homelessness, and limited access to medical care were associated with unprotected sex among external migrants. CONCLUSION: Study findings underscore the role mobility and risk environments play in shaping HIV/STI risks. They highlight the need to consider mobility in the context of migration status and other risk environment factors in developing effective prevention strategies for this population.


Subject(s)
Delivery of Health Care , HIV Infections/epidemiology , Sexually Transmitted Diseases/epidemiology , Adolescent , Adult , Asia, Central/epidemiology , Demography , Humans , Logistic Models , Male , Marriage , Middle Aged , Odds Ratio , Poverty , Risk Factors , Sexual Behavior , Socioeconomic Factors , Transients and Migrants , Young Adult
16.
J Thorac Cardiovasc Surg ; 151(5): 1269-77, 2016 May.
Article in English | MEDLINE | ID: mdl-26725711

ABSTRACT

OBJECTIVES: To demonstrate the feasibility of Real-time magnetic resonance imaging (rtMRI) guided transcatheter aortic valve replacement (TAVR) with an active guidewire and an MRI compatible valve delivery catheter system in a swine model. METHODS: The CoreValve system was minimally modified to be MRI-compatible by replacing the stainless steel components with fluoroplastic resin and high-density polyethylene components. Eight swine weighing 60-90 kg underwent rtMRI-guided TAVR with an active guidewire through a left subclavian approach. RESULTS: Two imaging planes (long-axis view and short-axis view) were used simultaneously for real-time imaging during implantation. Successful deployment was performed without rapid ventricular pacing or cardiopulmonary bypass. Postdeployment images were acquired to evaluate the final valve position in addition to valvular and cardiac function. CONCLUSIONS: Our results show that the CoreValve can be easily and effectively deployed through a left subclavian approach using rtMRI guidance, a minimally modified valve delivery catheter system, and an active guidewire. This method allows superior visualization before deployment, thereby allowing placement of the valve with pinpoint accuracy. rtMRI has the added benefit of the ability to perform immediate postprocedural functional assessment, while eliminating the morbidity associated with radiation exposure, rapid ventricular pacing, contrast media renal toxicity, and a more invasive procedure. Use of a commercially available device brings this rtMRI-guided approach closer to clinical reality.


Subject(s)
Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/surgery , Bioprosthesis , Magnetic Resonance Imaging, Cine/methods , Transcatheter Aortic Valve Replacement/methods , Animals , Disease Models, Animal , Female , Heart Valve Prosthesis , Male , Minimally Invasive Surgical Procedures/adverse effects , Minimally Invasive Surgical Procedures/methods , Operative Time , Postoperative Complications/epidemiology , Postoperative Complications/physiopathology , Prosthesis Design , Prosthesis Failure , Random Allocation , Sensitivity and Specificity , Swine , Transcatheter Aortic Valve Replacement/adverse effects
17.
Adv Mar Biol ; 73: 193-218, 2016.
Article in English | MEDLINE | ID: mdl-26790893

ABSTRACT

Among the many cetacean species that occupy Australian coastal waters, Australian humpback dolphins, Sousa sahulensis, are one of the most vulnerable to extirpation due to human activities. This review summarises the existing knowledge, presently occurring and planned research projects, and current conservation measures for humpback dolphins in Western Australia (WA). Rapid and wide-scale coastal development along the northern WA coastline has occurred despite a lack of baseline data for inshore dolphins and, therefore, without a precautionary approach to their conservation. The distribution, abundance, habitat use, and population structure of humpback dolphins remain poorly understood. Less than 1% of their inferred distribution has so far been studied to understand local population demography. The sparse data available suggest that WA humpback dolphins occur as localised populations in low numbers within a range of inshore habitats, including both clear and turbid coastal waters. Marine protected areas cover a third of their inferred distribution in WA, but the efficacy of these reserves in protecting local cetacean populations is unknown. There is a pressing need for coordination and collaboration among scientists, government agencies, industry bodies, Traditional Owners, and local community groups to fill in the gaps of information on humpback dolphins in WA. The recently developed strategies and sampling guidelines developed by state and federal governments should serve as a best practise standard for collection of data aimed at assessing the conservation status of humpback dolphins in WA and Australia.


Subject(s)
Conservation of Natural Resources , Dolphins/physiology , Endangered Species , Animal Distribution , Animal Migration , Animals , Behavior, Animal/physiology , Ecosystem , Population Dynamics , Social Behavior , Species Specificity , Western Australia
18.
Adv Mar Biol ; 73: 273-314, 2016.
Article in English | MEDLINE | ID: mdl-26790895

ABSTRACT

Determining the sex of free-ranging cetaceans can be challenging. Sexual dimorphism among external features may allow inferences on sex, but such patterns may be difficult to detect and are often confounded by age and geographic variation. Dorsal fin images of 107 female and 54 male Australian humpback dolphins, Sousa sahulensis, from Western Australia (WA) and Queensland (QLD) were used to investigate sex, age and geographic differences in colouration, height/length quotient and number of notches. Adult males exhibited more dorsal fin notches (p<0.001) and a significantly greater loss of pigmentation on the upper half of their dorsal fins (p<0.001) than did adult females. These differences likely reflect that males experience a higher frequency and/or intensity of intraspecific aggression than females. In QLD, heavily spotted dorsal fins were more frequent among females than males (p<0.001). Logistic regression analyses revealed that dorsal fin spotting and loss of pigmentation on the upper half of the dorsal fin provided the best model parameters for predicting the sex of sampled adults, with 97% accuracy. This technique offers a rapid, non-invasive method for predicting sex in Australian humpback dolphins, which could potentially be applied to populations throughout their range. In contrast to adults, presumed immature animals showed little or no loss of pigmentation or spotting; however, the rate of development of these features remains unknown. There were pronounced differences between QLD and WA in the intensity of spotting on dorsal fins and the extent of pigmentation loss around the posterior insertion and trailing edge of the dorsal fin. While based on a limited sample size, these geographic differences may have conservation implications in terms of population subdivision and should be investigated further.


Subject(s)
Animal Distribution , Animal Fins/anatomy & histology , Dolphins/anatomy & histology , Dolphins/physiology , Animals , Female , Male , Sex Factors , Species Specificity
19.
J Thorac Cardiovasc Surg ; 151(5): 1407-12, 2016 May.
Article in English | MEDLINE | ID: mdl-26778373

ABSTRACT

BACKGROUND: Real-time magnetic resonance imaging (rtMRI)-guided transcatheter aortic valve replacement (TAVR) offers improved visualization, real-time imaging, and pinpoint accuracy with device delivery. Unfortunately, performing a TAVR in a MRI scanner can be a difficult task owing to limited space and an awkward working environment. Our solution was to design a MRI-compatible robot-assisted device to insert and deploy a self-expanding valve from a remote computer console. We present our preliminary results in a swine model. METHODS: We used an MRI-compatible robotic arm and developed a valve delivery module. A 12-mm trocar was inserted in the apex of the heart via a subxiphoid incision. The delivery device and nitinol stented prosthesis were mounted on the robot. Two continuous real-time imaging planes provided a virtual real-time 3-dimensional reconstruction. The valve was deployed remotely by the surgeon via a graphic user interface. RESULTS: In this acute nonsurvival study, 8 swine underwent robot-assisted rtMRI TAVR for evaluation of feasibility. Device deployment took a mean of 61 ± 5 seconds. Postdeployment necropsy was performed to confirm correlations between imaging and actual valve positions. CONCLUSIONS: These results demonstrate the feasibility of robotic-assisted TAVR using rtMRI guidance. This approach may eliminate some of the challenges of performing a procedure while working inside of an MRI scanner, and may improve the success of TAVR. It provides superior visualization during the insertion process, pinpoint accuracy of deployment, and, potentially, communication between the imaging device and the robotic module to prevent incorrect or misaligned deployment.


Subject(s)
Aortic Valve/surgery , Heart Valve Prosthesis , Magnetic Resonance Imaging, Cine/methods , Robotic Surgical Procedures/methods , Transcatheter Aortic Valve Replacement/methods , Animals , Feasibility Studies , Minimally Invasive Surgical Procedures/methods , Models, Animal , Operative Time , Sensitivity and Specificity , Swine
20.
Community Ment Health J ; 52(8): 1047-1056, 2016 11.
Article in English | MEDLINE | ID: mdl-25963238

ABSTRACT

This paper examines individual, social, and structural factors associated with depression among 728 people who inject drugs (PWID) and their intimate partners in Kazakhstan, with separate multivariate models by gender. Depression scores were higher on average among participants of both genders who recently experienced sexual intimate partner violence, food insecurity, and who had lower levels of self-rated health. Among females, higher depression scores were associated with experiencing childhood sexual abuse, lower levels of social support, and not having children. Findings highlight a need to incorporate gender differences and factors associated with depression in designing mental health services for PWID in Kazakhstan.


Subject(s)
Depression/epidemiology , Sexual Partners/psychology , Substance Abuse, Intravenous/psychology , Adult , Female , Humans , Kazakhstan/epidemiology , Male , Self Report
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