Publications by authors named "Bhushan Thakkar"

Background: Adverse childhood experiences (ACEs) have been implicated in the aetiology of a range of health outcomes, including multimorbidity. In this systematic review and meta-analysis, we aimed to identify, synthesise, and quantify the current evidence linking ACEs and multimorbidity.

Methods: We searched seven databases from inception to 20 July 2023: APA PsycNET, CINAHL Plus, Cochrane CENTRAL, Embase, MEDLINE, Scopus, and Web of Science.

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Background: Painful diabetic neuropathy (pDN) is the most common cause of neuropathic pain (NP) in the United States. Prolonged continuous theta burst stimulation (pcTBS), a form of repetitive transcranial magnetic stimulation (rTMS), is quick (1-4 minutes) and tolerable for most individuals, compared to high frequency rTMS and can modulate pain thresholds in healthy participants. However, its effects on patients with chronic pain are still unclear.

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Objective: To effectively combat the simultaneous overdose and maternal mortality crises, a multimodal approach is needed. The aim of this study is to evaluate the preliminary effectiveness of a pilot, experiential learning, substance use disorder (SUD) curriculum embedded into a third-year medical student obstetrics and gynecology clerkship to improve self-reported confidence in SUD clinical skills.

Methods: This SUD curriculum was designed and implemented in an outpatient clinic, which provides integrated obstetric, gynecologic, and addiction medicine services for pregnant and parenting people with SUD.

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Objectives: A new paradigm for Transcranial Magnetic Stimulation (TMS), referred to as prolonged continuous theta burst stimulation (pcTBS), has recently received attention in the literature because of its advantages over high frequency repetitive TMS (HF-rTMS). Clinical advantages include less time per intervention session and the effects appear to be more robust and reproducible than HF-rTMS to modulate cortical excitability. HF-rTMS targeted at the primary motor cortex (M1) has demonstrated analgesic effects in patients with neuropathic pain but their mechanisms of action are unclear and pcTBS has been studied in healthy subjects only.

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Gardner syndrome has head and neck manifestations that may be recognized during dental visits. Features such as multiple gnathic osteomas, impacted supernumerary teeth, and multiple foci of idiopathic osteosclerosis can be easily identified on dental radiographs, prompting the clinician to refer the patient for further investigation. A dental examination and routine radiographs play a vital role in revealing the extracolonic presentation of Gardner syndrome, which facilitates timely screening and detection of colorectal cancer and other malignancies associated with this condition.

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Objective: The COVID-19 pandemic prompted healthcare delivery changes, but the associated impacts on substance use disorder treatment outcomes among pregnant and parenting people are unknown. This study aims to (1) describe COVID-19-driven clinical practice changes, (2) evaluate clinic-level visit attendance patterns, and (3) compare patient-level treatment engagement outcomes across 3 COVID-19 pandemic phases in an OBGYN-addiction treatment clinic.

Methods: COVID-19 phases include pre-COVID-19 (August 2019-February 2020), early COVID-19 (March-December 2020), and COVID-19 vaccine (January-July 2021).

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Introduction: Opioid use disorder (OUD) is a leading cause of pregnancy-associated deaths. OUD treatment with buprenorphine (BUP) reduces overdose risk and improves perinatal outcomes. Incarceration can be a barrier to receipt of OUD treatment during pregnancy and postpartum.

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Objectives: The expansion of access to buprenorphine-naloxone (BUP-NAL) for the treatment of opioid use disorder (OUD) is critical to combat the overdose crisis. Evidence is lacking to guide providers on how to best promote BUP-NAL medication safety for their patients. This study assessed (1) the current medication storage practices among a sample of pregnant and parenting people receiving BUP-NAL for OUD; (2) the feasibility and acceptability of providing a lockbox for safe medication storage.

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Article Synopsis
  • The paper aims to summarize human studies on brain derived neurotrophic factor (BDNF) as a biomarker, review animal studies regarding its role in neuropathic pain, and critique measurement techniques used to quantify BDNF in blood biofluids.
  • It highlights the existing inconsistencies in BDNF findings across various studies involving healthy individuals and patients dealing with chronic pain or neuropsychiatric disorders.
  • The authors recommend using serum over plasma for measuring BDNF due to its greater stability and sensitivity, and stress the need for more research to tackle the methodological challenges in current studies.
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After spinal cord injury (SCI), motoneuron death occurs at and around the level of injury which induces changes in function and organization throughout the nervous system, including cortical changes. Muscle affected by SCI may consist of both innervated (accessible to voluntary drive) and denervated (inaccessible to voluntary drive) muscle fibers. Voluntary activation measured with transcranial magnetic stimulation (VA) can quantify voluntary cortical/subcortical drive to muscle but is limited by technical challenges including suboptimal stimulation of target muscle relative to its antagonist.

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Article Synopsis
  • * An innovative 3-session curriculum was developed, combining readings, lectures, and hands-on experiences in a specialized clinic; results showed significant self-reported improvement in various clinical skills related to SUD screening and treatment.
  • * Feedback from attending physicians indicated enhanced evaluations of residents' skills, and qualitative interviews highlighted the curriculum's high acceptability among the participants, suggesting it could be a valuable training model.
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Individual neuroanatomy can influence motor responses to transcranial magnetic stimulation (TMS) and corticomotor excitability after intermittent theta burst stimulation (iTBS). The purpose of this study was to examine the relationship between individual neuroanatomy and both TMS response measured using resting motor threshold (RMT) and iTBS measured using motor evoked potentials (MEPs) targeting the biceps brachii and first dorsal interosseus (FDI). Ten nonimpaired individuals completed sham-controlled iTBS sessions and underwent MRI, from which anatomically accurate head models were generated.

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Article Synopsis
  • Chronic pain, specifically Chronic Pelvic Pain (CPP), significantly complicates opioid use disorder (OUD), with overlapping psychosocial and neurobiological risks.
  • The study aimed to compare the prevalence of CPP and sexual dysfunction between individuals on buprenorphine for OUD and those receiving treatment for other chronic medical conditions, using various assessment tools.
  • Findings indicated high levels of CPP and sexual dysfunction in both groups, highlighting the need for integrated, gender-sensitive approaches in OUD treatment to improve recovery outcomes.
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(1) Report sex-specific prevalence of coronavirus disease 2019 (COVID-19) test positivity among an opioid use disorder (OUD) cohort (2) Assess sex-specific rates of opioid overdose and mortality. A retrospective cohort study was performed on all adult patients with OUD who received a COVID-19 test in calendar year 2020 at a large academic medical center in Richmond, Virginia. Our study outcomes were positive COVID-19 test, opioid overdose, and all-cause in-hospital mortality.

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Article Synopsis
  • A new curriculum was developed to train third-year medical students on substance use disorder (SUD) in pregnant women, addressing the growing crisis among this population.
  • The program included one day of clinical rotation, where students engaged in hands-on learning through screening and intervention tasks, while considering COVID-19 restrictions.
  • Evaluation results showed that both students and teachers found the curriculum to be feasible and acceptable, prompting plans to expand its use for both third- and fourth-year medical students in the future.
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Postpartum is a highly vulnerable time for women with opioid use disorder (OUD). Our primary objective was to identify patient and provider reported aspects of the pregnancy to postpartum transition that impact recovery progress for postpartum women receiving medication for opioid use disorder (MOUD). This qualitative study consisted of semi-structured interviews with postpartum women in OUD treatment ( = 12) and providers ( = 9) at an outpatient addiction clinic.

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Purpose Of Review: Opioid-related deaths are a leading cause of mortality during pregnancy through 12 months postpartum. Buprenorphine use during pregnancy is increasing, yet expert opinion on its dosing through the perinatal period is limited. We provide a review of the current clinical literature on buprenorphine dosing during pregnancy through 12 months postpartum.

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Unlabelled: Older runners are at greater risk of certain running-related injuries. Previous work demonstrated that aging influences running biomechanics, and suggest a compensatory relation between changes in the proximal and distal joints. Previous comparisons of interjoint coordination strategies between young and older runners could potentially have missed relevant differences by averaging coordination measures across time.

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Purpose: Elevated tibiofemoral joint (TFJ) contact forces have been linked to the development and progression of knee osteoarthritis. The primary objective of this study was to determine the association between peak TFJ shear and compression forces during running at different self-selected step frequencies (SF) in female recreational runners.

Methods: Fifty-five healthy female recreational runners ran at 2.

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Objectives: To investigate whether previously-determined kinematic predictors of kinetics during running differ between demographic groups.

Participants: Young male (n = 13, age = 22 (2) yrs), young female (n = 13, age = 25 (4) yrs), older male (n = 13, age = 50 (4) yrs) and older female (n = 13, age = 52 (3) yrs) runners.

Main Outcome Measures: Sagittal plane kinematics and kinetics were assessed while participants ran at their preferred pace.

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Article Synopsis
  • Cleft palate repair often requires a mouth gag, with the Dingmans mouth gag being the most commonly used, but it can lead to complications like sutures getting caught, especially for novice surgeons.
  • The article presents a straightforward technique using a rubber dam sheet to cover the mouth gag's frame, which may help prevent these suture issues.
  • This method is not only simple and cost-effective but could also potentially reduce surgery time, suggesting a need for further research to confirm these benefits.
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Chondroma of the mandibular condyle is a rare benign tumor, with just a handful of cases reported in the literature. Chondromas are rare in the maxillofacial region, but are quite common in the bones of the hands and feet. So far only eight cases of true chondroma have been reported.

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