Unclaimed Bodies in Anatomical Education: Medical Student Attitudes at One U.S. Medical Institution.

PHENOMENON: Dissection of cadavers is a common practice in anatomical education. To meet demand for cadavers, some medical institutions facilitate dissection of individuals who did not provide consent during their life. This includes the bodies of individuals who passed away with either no living kin or no kin able to claim and bury their body. Recent literature demonstrates widespread discomfort with this practice among anatomy course directors at U.S. institutions, bringing into question continuation of this practice. However, attitudes among medical students must similarly be assessed as they represent key stakeholders in the dissection process. The purpose of this study was to assess prevailing attitudes among a sample of medical students at one U.S. medical institution regarding the dissection of unclaimed bodies and identify emerging themes in ethical viewpoints. APPROACH: Two-hundred-twelve students (35% response rate) at one U.S. medical institution completed an anonymous online survey. Students came from different class cohorts at various stages of their training. Survey items were developed to capture students' academic and emotional experience with anatomical dissection and to identify emerging themes in attitudes. FINDINGS: Students reported high regard for cadaveric dissection in general with 170 (80%) respondents endorsing it as critical to anatomical education. Regarding dissection of unclaimed bodies, 30% of students found the practice ethical while 47% of students found the practice unethical. Multivariate analysis found that ethical view was directly associated with comfort level (OR= 156.16; 95% CI: 34.04, 716.40). Most students expressed comfort dissecting self-donated bodies (n = 206, 97%), while fewer students expressed comfort dissecting unclaimed bodies (n = 66, 31.1%). This latter finding significantly correlated with gender (t = 3.361. p < 0.05), class cohort (F = 3.576, p < 0.01), but not with religious affiliation or age. Thematic analysis revealed the following themes in student responses: (1) invoking ethical paradigms to either justify or condemn the practice, (2) subjective experiences, and (3) withholding judgment of the practice. INSIGHTS: Many students expressed negative attitudes toward the dissection of unclaimed bodies, with some citing issues of social vulnerability, justice, and autonomy. These findings indicate that many students' ethical code may conflict with institutional policies which permit this practice. Medical school represents a critical time in the professional development of trainees, and development practices which align with the moral code of local institutions and stakeholders is crucial.

Brain-based correlates of antidepressant response to ketamine: a comprehensive systematic review of neuroimaging studies.

Ketamine is an effective antidepressant, but there is substantial variability in patient response and the precise mechanism of action is unclear. Neuroimaging can provide predictive and mechanistic insights, but findings are limited by small sample sizes. This systematic review covers neuroimaging studies investigating baseline (pre-treatment) and longitudinal (post-treatment) biomarkers of responses to ketamine. All modalities were included. We performed searches of five electronic databases (from inception to April 26, 2022). 69 studies were included (with 1751 participants). There was substantial methodological heterogeneity and no well replicated biomarker. However, we found convergence across some significant results, particularly in longitudinal biomarkers. Response to ketamine was associated with post-treatment increases in gamma power in frontoparietal regions in electrophysiological studies, post-treatment increases in functional connectivity within the prefrontal cortex, and post-treatment increases in the functional activation of the striatum. Although a well replicated neuroimaging biomarker of ketamine response was not identified, there are biomarkers that warrant further investigation.

TESTICULAR REGRESSION SYNDROME: PRACTICE VARIATION IN DIAGNOSIS AND MANAGEMENT.

Objective: The purpose of this study was to assess clinical practice patterns with regard to diagnosis and management of testicular regression syndrome (TRS), a condition in 46,XY males with male phenotypic genitalia and bilateral absence of testes. Methods: A retrospective review was conducted at two large pediatric academic centers to examine diagnostic and management approaches for TRS. Results: Records of 57 patients were reviewed. Diagnostic methods varied widely between patients and included hormonal testing, karyotype, imaging, and surgical exploration, with multiple diagnostic methods frequently used in each patient. Of the 30 subjects that had reached adolescence at the time of the study, 17 (57%) had gaps in care of more than 5 years during childhood. Thirty subjects had received testosterone replacement therapy at a mean age of 12.1 ± 1.0 years. Forty-seven percent had a documented discussion of infertility. Eighty-two percent discussed prosthesis placement, with 35% having prostheses placed. Twenty-three percent were seen by a psychosocial provider. The between-site differences were age at fertility discussion, age at and number of prostheses placed, and type/age of testosterone initiation. Conclusion: Our findings highlight the wide variation in diagnostic approaches, follow-up frequency, testosterone initiation, fertility counseling, and psychosocial support for patients with TRS. Developing evidence-based guidelines for the evaluation and management of TRS would help reduce inconsistencies in care and unnecessary testing. Ongoing follow-up and coordination of care, even during the years when no hormonal treatment is being administered, could lead to opportunities for psychosocial support and improved interdisciplinary approach to care. Abbreviations: AMH = antimüllerian hormone; CAH = congenital adrenal hyperplasia; DSD = differences/disorders of sex development; hCG = human chorionic gonadotropin; TRS = testicular regression syndrome.