The mesolimbic dopamine (DA) system has been implicated in drug reward, locomotor sensitization, and responding for reward-related stimuli [termed conditioned reinforcers (CR)]. Here, we investigated the effect of brain-derived neurotrophic factor (BDNF), which enhances the survival and function of dopaminergic neurons, on stimulant-induced locomotor sensitization and responding for CR. In experiment 1, BDNF was infused into the nucleus accumbens (NAc) or ventral tegmental area over 2 weeks via chronically implanted minipumps (1-2.5 microgram/d), and the psychomotor stimulant effects of cocaine (5-15 mg/kg, i.p.) were studied. We found that BDNF enhanced the initial stimulant effects of cocaine and seemed to facilitate the development of sensitization to repeated cocaine doses. In experiment 2, we studied the effects of intra-NAc BDNF infusions on responding for CR. BDNF-treated rats showed twice as many CR responses compared with controls when saline was first administered. BDNF enhanced responding on the CR lever more than four times that seen in control animals after a cocaine injection (10 mg/kg, i.p.). The enhanced response to cocaine in BDNF-treated animals persisted for more than a month after the BDNF infusions had stopped, indicating long-lasting changes in the mesolimbic DA system caused by BDNF administration. In experiment 3, we examined locomotor sensitization to cocaine in heterozygous BDNF knock-out mice and found that the development of sensitization was delayed compared with wild-type littermates. These results demonstrate the profound effects of BDNF on the enhancement of both cocaine-induced locomotion and facilitation of CR and suggest a possible role for BDNF in long-term adaptations of the brain to cocaine.

IMPORTANCE While the relationship between resident work hours and patient safety has been extensively studied, little research has evaluated the role of attending physician supervision on patient safety. OBJECTIVE To determine the effect of increased attending physician supervision on an inpatient resident general medical service on patient safety and educational outcomes. DESIGN, SETTING, AND PARTICIPANTS This 9-month randomized clinical trial performed on an inpatient general medical service of a large academic medical center used a crossover design. Participants were clinical teaching attending physicians and residents in an internal medicine residency program. INTERVENTIONS Twenty-two faculty provided either (1) increased direct supervision in which attending physicians joined work rounds on previously admitted patients or (2) standard supervision in which attending physicians were available but did not join work rounds. Each faculty member participated in both arms in random order. MAIN OUTCOMES AND MEASURES The primary safety outcome was rate of medical errors. Resident education was evaluated via a time-motion study to assess resident participation on rounds and via surveys to measure resident and attending physician educational ratings. RESULTS Of the 22 attending physicians, 8 (36%) were women, with 15 (68%) having more than 5 years of experience. A total of 1259 patients (5772 patient-days) were included in the analysis. The medical error rate was not significantly different between standard vs increased supervision (107.6; 95% CI, 85.8-133.7 vs 91.1; 95% CI, 76.9-104.0 per 1000 patient-days; P = .21). Time-motion analysis of 161 work rounds found no difference in mean length of time spent discussing established patients in the 2 models (202; 95% CI, 192-212 vs 202; 95% CI, 189-215 minutes; P = .99). Interns spoke less when an attending physician joined rounds (64; 95% CI, 60-68 vs 55; 95% CI, 49-60 minutes; P = .008). In surveys, interns reported feeling less efficient (41 [55%] vs 68 [73%]; P = .02) and less autonomous (53 [72%] vs 86 [91%]; P = .001) with an attending physician present and residents felt less autonomous (11 [58%] vs 30 [97%]; P < .001). Conversely, attending physicians rated the quality of care higher when they participated on work rounds (20 [100%] vs 16 [80%]; P = .04). CONCLUSIONS AND RELEVANCE Increased direct attending physician supervision did not significantly reduce the medical error rate. In designing morning work rounds, residency programs should reconsider their balance of patient safety, learning needs, and resident autonomy.

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To better understand the impact and generalizability of clinical coaching, a larger, longitudinal study is required to look at patient and provider outcomes in detail. Further refinement of the SCA role to meet faculty needs is needed and could include faculty development.

BACKGROUND: Hospital discharges are vulnerable periods for patient safety, especially in teaching hospitals where discharges are done by residents with competing demands. We sought to assess whether embedding a nurse practitioner on a medical team to help physicians with the discharge process would improve communication, patient follow‐up, and hospital reutilization. METHODS: A 5‐month randomized controlled trial was conducted on the medical service at an academic tertiary‐care hospital. A nurse practitioner was randomly assigned to 1 resident team to complete discharge paperwork, arrange follow‐up appointments and prescriptions, communicate discharge plans with nursing and primary care physicians, and answer questions from discharged patients. RESULTS: Intervention patients had more discharge summaries completed within 24 hours (67% vs 47%, P < 0.001). Similarly, they had more follow‐up appointments scheduled by the time of discharge (62% vs 36%, P < 0.0001) and attended those appointments more often within 2 weeks (36% vs 23%, P < 0.0002). Intervention patients knew whom to call with questions (95% vs 85%, P = 0.003) and were more satisfied with the discharge process (97% vs 76%, P < 0.0001). Attending rounds on the intervention team finished on time (45% vs 31%, P = 0.058), and residents signed out on average 46 minutes earlier each day. There was no significant difference between the groups in 30‐day emergency department visits or readmissions. CONCLUSIONS: Helping resident physicians with the discharge process improves many aspects of discharge communication and patient follow‐up, and saves residents' time, but had no effect on hospital reutilization for a general medicine population. Journal of Hospital Medicine 2011;. © 2011 Society of Hospital Medicine.

In an effort to meet the needs of adults with autism spectrum disorder (ASD) while hospitalized, a team of experts and providers from Massachusetts General Hospital (MGH), MGH for Children as well as parents of individuals with ASD was sparked in 2013. This became a multidisciplinary collaborative, the MGH Autism Care Collaborative, to improve adult care for inpatients with ASD. The collaborative was created with three goals in mind: (1) to educate internal medicine adult inpatient providers and staff on the unique needs of adults with ASD when hospitalized; (2) to create ASD specific resources for internal medicine adult inpatient providers; (3) to optimize patient care from admission to discharge among adults with ASD admitted to internal medicine services.

ImportanceIn large academic centers, medical residents work on multiple clinical floors with transient interactions with nursing colleagues. Although teamwork is critical in delivering high-quality medical care, little research has evaluated the effect of interprofessional familiarity on inpatient team performance.ObjectiveTo determine the effectiveness of increased familiarity between medical residents and nurses on team performance, psychological safety, and communication.Design, Setting, and ParticipantsA 12-month randomized clinical trial in an inpatient general medical service at a large academic medical center was completed from June 25, 2019, to June 24, 2020. Participants included 33 postgraduate year (PGY)–1 residents in an internal medicine residency program and 91 general medicine nurses.InterventionsFifteen PGY-1 residents were randomized to complete all 16 weeks of their general medicine inpatient time on 1 medical nursing floor (intervention group with 43 nurses). Eighteen PGY-1 residents completed 16 weeks on 4 different general medical floors as per usual care (control group with 48 nurses).Main Outcomes and MeasuresThe primary outcome was an assessment of team performance in physician-nurse simulation scenarios completed at 6 and 12 months. Interprofessional communication was assessed via a time-motion study of both work rounds and individual resident clinical work. Psychological safety and teamwork culture were assessed via surveys of both residents and nurses at multiple time points.ResultsOf the intervention and control PGY-1 residents, 8 of 15 (54%) and 8 of 18 (44%) were women, respectively. Of the nurses in the intervention and control groups with information available, 37 of 40 (93%) and 34 of 38 (90%) were women, respectively, and more than 70% had less than 10 years of clinical experience. There was no difference in overall team performance during the first simulation. At the 12-month simulation, the intervention teams received a higher mean overall score in leadership and management (mean [SD], 2.47 [0.53] vs 2.17 [0.39]; P = .045, Cohen d = 0.65) and on individually rated items were more likely to work as 1 unit (100% vs 62%; P = .003), negotiate with the patient (61% vs 10%; P = .001), support other team members (61% vs 24%; P = .02), and communicate as a team (56% vs 19%; P = .02). The intervention teams were more successful in achieving the correct simulation case outcome of negotiating a specific insulin dose with the patient (67% vs 14%; P = .001). Time-motion analysis noted intervention teams were more likely to have a nurse present on work rounds (47% vs 28%; P = .03). At 6 months, nurses in the intervention group were more likely to report their relationship with PGY-1 residents to be excellent to outstanding (74% vs 40%; P = .003), feel that the input of all clinical practitioners was valued (95% vs 53%; P &amp;lt; .001), and say that feedback between practitioners was delivered in a way to promote positive interactions (90% vs 60%; P = .003). These differences diminished at the 12-month survey.Conclusions and RelevanceIn this randomized clinical trial, increased familiarity between nurses and residents promoted more rapid improvement of nursing perception of team relationships and, over time, led to higher team performance on complex cognitive tasks in medical simulations. Medical centers should consider team familiarity as a potential metric to improve physician-nursing teamwork and patient care.Trial RegistrationClinicalTrials.gov Identifier: NCT05213117

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