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1.
Opt Lett ; 47(18): 4708-4711, 2022 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-36107069

RESUMO

We study temporal correlations of interfering quasi-thermal fields, obtained by scattering laser radiation on a rotating ground glass disk. We show that the Doppler effect causes oscillations in the temporal cross correlation function. Furthermore, we propose how to use Hong-Ou-Mandel interference of quasi-thermal fields in the time domain to characterize linear optical circuits.

2.
Am J Obstet Gynecol ; 222(5): 482.e1-482.e8, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31733206

RESUMO

BACKGROUND: Same-day discharge is becoming increasingly common in gynecologic surgery; however, data are limited for frequency, setting, and severity of unanticipated healthcare visits for women who are discharged on the day of surgery after major prolapse repair. OBJECTIVE: The purpose of this study was to evaluate whether discharge on the day of surgery is associated with increased 30-day unanticipated healthcare encounters after major pelvic organ prolapse surgery compared with discharge on or after postoperative day 1. STUDY DESIGN: This is a retrospective analysis of women who underwent pelvic organ prolapse surgery by 8 female pelvic medicine and reconstructive surgery surgeons from January 2016 to October 2017. Unanticipated healthcare encounter was a composite variable of any visit to the office, emergency department, or hospital readmission. Number of visits, visit diagnoses, and complication severity (Clavien-Dindo classification) were compared by day of discharge with the use of χ2 tests. Multivariable analyses were performed. RESULTS: Of 405 women, 258 (63.7%) were discharged on the day of surgery, and 147 (36.3%) were discharged on postoperative day 1 or later. Mean age was 66±11 years, body mass index was 27.9±4.8 kg/m2. Most had stage III prolapse (n=273; 67.4%). Procedures included laparoscopic or robotic sacrocolpopexy, (n=163; 40.2%), vaginal apical suspensions (n=115; 28.4%), obliterative (n=105; 25.9%), and concomitant hysterectomy (n=229; 56.5%). There was no increase in the number of women with at least 1 unanticipated healthcare encounter within 30 days of surgery, based on discharge on the day of surgery compared with postoperative day 1 (24.0% vs 26.5%; P=.572). The majority of visits occurred in the office (17.8% vs 19.0%; P=.760). There was no increase in 30-day readmissions (3.5% vs 4.8%; P=.527). The most common visit diagnosis was pain and accounted for 31.5% of all visits, followed by urologic and gastrointestinal symptoms. Diagnoses and complication severity did not vary by day of discharge, except that women who were discharged on the day of surgery were more likely to have a superficial wound separation (11.3% vs 0%; P=.011) and less likely to experience grade II complications (7.4% vs 15.6%, P=.009). Few women had >1 unscheduled visit, and rates were similar between the 2 groups (6.2% vs 6.8%; P=.810). On multivariable regression, younger women (adjusted odds ratio, 1.03; 95% confidence interval, 1.001-1.05), those with lower body mass index (adjusted odds ratio, 1.07; 95% confidence interval, 1.13-1.01), and higher initial postanesthesia recovery unit pain scores (adjusted odds ratio, 1.11; 95% confidence interval, 1.02-1.21) were more likely to have an unanticipated healthcare encounter. Pain complaints were evaluated most often in the office compared with the emergency department (41.1% vs 13.0%); medical complications such as cardiac (15.6% vs 0%) and respiratory (6.5% vs 0%) were more likely to be evaluated in the emergency department. Higher grade complications (II/III) were more likely to visit the emergence department (78.2% vs 27.1%; P<.0001). CONCLUSION: Same-day discharge after prolapse surgery did not result in an increase in 30-day unanticipated healthcare encounters.


Assuntos
Tempo de Internação/estatística & dados numéricos , Alta do Paciente , Readmissão do Paciente/estatística & dados numéricos , Prolapso de Órgão Pélvico/cirurgia , Idoso , Estudos de Coortes , Feminino , Procedimentos Cirúrgicos em Ginecologia , Humanos , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos
3.
Can Fam Physician ; 66(11): 833-842, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-33208428

RESUMO

OBJECTIVE: To determine the level of palliative care involvement before and after medical assistance in dying (MAID) requests, and to compare the differences between those who completed MAID and those who requested but did not complete MAID. DESIGN: Retrospective chart review. SETTING: The Ottawa Hospital (TOH) in Ontario. PARTICIPANTS: Ninety-seven patients who requested MAID at TOH between February 6, 2016, and June 30, 2017. MAIN OUTCOME MEASURES: Completion of MAID. RESULTS: Eighty-four patients were included in the study. Fifty patients (59.5%) completed MAID. The most common reasons for not completing MAID were death before completion of the required assessments (47.0%), ineligibility (26.5%), and loss of capacity (14.7%). The most common diagnoses were cancer (72.6%) and neurologic disease (11.9%). The most frequent reasons for requesting MAID were physical suffering (77.4%), loss of autonomy (36.9%), and poor quality of life (27.4%). Patients who completed MAID in this study were more likely to report physical suffering as the reason for their request than those who did not complete MAID (84.0% vs 67.6%; P = .08), yet only 23.8% of all patients requesting MAID had an Edmonton Symptom Assessment Scale completed. Before MAID request, 27.4% of patients had a community palliative care physician and 59.5% had palliative care involvement in any setting. The TOH palliative care team was involved in 46.4% of patients who requested MAID. CONCLUSION: There is still inadequate provision of palliative care for those requesting MAID. Guidelines, legislation, and guidance are needed to help physicians ensure patients are aware of and understand the benefits of palliative care in end-of-life decisions. However, the involvement of palliative care with patients who completed MAID was similar to those who did not complete MAID. Multicentre studies are needed to further explore the MAID process and clarify the role of palliative care in that process.


Assuntos
Cuidados Paliativos , Suicídio Assistido , Canadá , Humanos , Assistência Médica , Ontário , Qualidade de Vida , Estudos Retrospectivos
5.
J Oral Maxillofac Surg ; 77(4): 791.e1-791.e7, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30677410

RESUMO

PURPOSE: The aim of this study was to analyze the demographic variables and causes and characteristics of mandibular angle fractures managed at several European departments of maxillofacial surgery. MATERIALS AND METHODS: This study was based on a multicenter systematic database that allowed the recording of data from all patients with mandibular angle fractures between January 1, 2013, and December 31, 2017. The following data were recorded: gender, age, etiology, side of angle fracture, associated mandibular fractures, presence of third molar, intermaxillary fixation, and osteosynthesis. RESULTS: The study included 1,162 patients (1,045 male and 117 female patients). A significant association was found between the presence of a third molar and the diagnosis of an isolated angle fracture (P < .0000005). Furthermore, assaults were associated with the presence of voluptuary habits (P < .00005), a younger mean age (P < .00000005), male gender (P < .00000005), and left-sided angle fractures (P < .00000005). CONCLUSIONS: Assaults and falls actually represent the most frequent causes of angle fractures. The presence of a third molar may let the force completely disperse during the determination of the angle fracture, finding a point of weakness.


Assuntos
Acidentes por Quedas , Fraturas Mandibulares/epidemiologia , Abuso Físico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Europa (Continente) , Feminino , Fixação Interna de Fraturas , Hábitos , Humanos , Masculino , Mandíbula , Fraturas Mandibulares/etiologia , Pessoa de Meia-Idade , Dente Serotino , Estudos Retrospectivos , Adulto Jovem
6.
J Comput Chem ; 39(21): 1607-1616, 2018 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-29701303

RESUMO

Bonding energies of 50 associates composed by neutral molecules (atoms) and bounded by various weak noncovalent interactions are calculated within the DFT framework using the PBE0/aug-cc-pVTZ combination. The electronic virial and electron density values at bond critical points together with their integrals over interatomic surfaces are tested to check their ability to estimate bonding energies. Two correlations schemes dealing with integrals over interatomic surface are suggested to estimate bonding energy of any noncovalent interaction. The physical meaning of explored and several known correlations is discussed. Methods to estimate interatomic surface integrals of electronic virial and electron density are proposed. © 2018 Wiley Periodicals, Inc.

7.
Crit Care Med ; 46(2): 280-289, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29341965

RESUMO

OBJECTIVES: We sought to determine the effect of acute electrolyte and osmolar shifts on brain volume and neurologic function in patients with liver failure and severe hepatic encephalopathy. DESIGN: Retrospective analysis of brain CT scans and clinical data. SETTING: Tertiary care hospital ICUs. PATIENTS: Patients with acute or acute-on-chronic liver failure and severe hepatic encephalopathy. INTERVENTIONS: Clinically indicated CT scans and serum laboratory studies. MEASUREMENTS AND MAIN RESULTS: Change in intracranial cerebrospinal fluid volume between sequential CT scans was measured as a biomarker of acute brain volume change. Corresponding changes in serum osmolality, chemistry measurements, and Glasgow Coma Scale were determined. Associations with cerebrospinal fluid volume change and Glasgow Coma Scale change for initial volume change assessments were identified by Spearman's correlations (rs) and regression models. Consistency of associations with repeated assessments was evaluated using generalized estimating equations. Forty patients were included. Median baseline osmolality was elevated (310 mOsm/Kg [296-321 mOsm/Kg]) whereas sodium was normal (137 mEq/L [134-142 mEq/L]). Median initial osmolality change was 9 mOsm/kg (5-17 mOsm/kg). Neuroimaging consistent with increased brain volume occurred in 27 initial assessments (68%). Cerebrospinal fluid volume change was more strongly correlated with osmolality (r = 0.70; p = 4 × 10) than sodium (r = 0.28; p = 0.08) change. Osmolality change was independently associated with Glasgow Coma Scale change (p = 1 × 10) and cerebrospinal fluid volume change (p = 2.7 × 10) in initial assessments and in generalized estimating equations using all 103 available assessments. CONCLUSIONS: Acute decline in osmolality was associated with brain swelling and neurologic deterioration in severe hepatic encephalopathy. Minimizing osmolality decline may avoid neurologic deterioration.


Assuntos
Edema Encefálico/etiologia , Encefalopatia Hepática/sangue , Encefalopatia Hepática/complicações , Doenças do Sistema Nervoso/etiologia , Adulto , Deterioração Clínica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Concentração Osmolar , Estudos Retrospectivos , Índice de Gravidade de Doença
8.
Am J Obstet Gynecol ; 219(5): 495.e1-495.e10, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-29913175

RESUMO

OBJECTIVE: Enhanced recovery after surgery protocols were developed for colorectal surgery to hasten postoperative recovery. Variations of the protocol are being adopted for gynecological procedures despite limited population and procedure-specific outcome data. Our objective was to evaluate whether implementation of an enhanced recovery after surgery pathway would facilitate reduced length of admission in a urogynecology population. MATERIALS AND METHODS: In this retrospective analysis of patients undergoing pelvic floor reconstructive surgery by 7 female pelvic medicine and reconstructive surgeons, we compared same-day discharge, length of admission and postoperative complications before and after implementation of an enhanced recovery after surgery pathway at a tertiary care hospital. Groups were compared using χ2 and Student t tests. Candidate variables that could have an impact on patient outcomes with P < .2 were included in multivariable logistic regression models. Satisfaction with surgical experience was assessed using a phone-administered questionnaire the day after discharge. RESULTS: Mean age and body mass index of 258 women (137 before enhanced recovery after surgery and 121 enhanced recovery after surgery) were 65.5 ± 11.3 years and 28.2 ± 5.0 kg/m2. The most common diagnosis was pelvic organ prolapse (n = 242, 93.8%) including stage III pelvic organ prolapse (n = 61, 65.1%). Apical suspension procedures included 58 transvaginal (25.1%), 112 laparoscopic/robotic (48.8%), and 61 obliterative (26.4%). Hysterectomy was performed in 57.4% of women. Demographic and surgical procedures were similar in both groups. Compared with before enhanced recovery after surgery, the enhanced recovery after surgery group had a higher proportion of same-day discharge (25.9% vs 91.7%, P < .001) and a 13.8 hour shorter duration of stay (25.9 ± 13.5 vs 12.1 ± 11.2 hours, P <.001). Operative and postsurgical recovery room times were similar (2.6 ± 0.8 vs 2.6 ± 0.9 hours, P =.955; 3.7 ± 2.1 vs 3.6 ± 2.2 hours, P = .879). Women in the enhanced recovery after surgery group were more likely to be discharged using a urethral catheter (57.9% enhanced recovery after surgery vs 25.4% before enhanced recovery after surgery, P = .005). There were no group differences in total 30 day postoperative complications overall and for the following categories: urinary tract infections, emergency room visits, unanticipated office visits, and return to the operating room. However, enhanced recovery after surgery patients had higher 30 day hospital readmission rates (n = 8, 6.7% vs n = 2, 1.5%, P = .048). Patients before enhanced recovery after surgery were readmitted for myocardial infarction and chest pain. Enhanced recovery after surgery patients were admitted for weakness, chest pain, hyponatremia, wound complications, nausea/ileus, and ureteral obstruction. Three enhanced recovery after surgery patients returned to the operating room for ureteral obstruction (n = 1), incisional hernia (n = 1), and vaginal cuff bleeding (n = 1). Enhanced recovery after surgery patients also had more postoperative nursing phone notes (2.6 ± 1.7 vs 2.1 ± 1.4, P = .030). On multivariable logistic regressions adjusting for age and operative time, same-day discharge was more likely in the enhanced recovery after surgery group (odds ratio, 32.73, 95% confidence interval [15.23-70.12]), while the odds of postoperative complications and emergency room visits were no different. After adjusting for age, operative time, and type of prolapse surgery, readmission was more likely in the enhanced recovery after surgery group (odds ratio, 32.5, 95% confidence interval [1.1-28.1]). In the enhanced recovery after surgery group, patient satisfaction (n = 77 of 121) was reported as very good or excellent by 86.7% for pain control, 89.6% for surgery preparedness, and 93.5% for overall surgical experience; 89.6% did not recall any postoperative nausea during recovery. CONCLUSION: Enhanced recovery after surgery implementation in a urogynecology population resulted in a greater proportion of same-day discharge and high patient satisfaction but with slightly increased hospital readmissions within 30 days.


Assuntos
Procedimentos Cirúrgicos em Ginecologia/métodos , Prolapso de Órgão Pélvico/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Procedimentos Cirúrgicos Urológicos/métodos , Idoso , Feminino , Humanos , Tempo de Internação/estatística & dados numéricos , Pessoa de Meia-Idade , Alta do Paciente/estatística & dados numéricos , Readmissão do Paciente/estatística & dados numéricos , Satisfação do Paciente , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Centros de Atenção Terciária
9.
Sensors (Basel) ; 18(4)2018 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-29621139

RESUMO

The pattern of the free surface of the turbulent flow in a partially filled circular pipe contains information on the underlying hydraulic processes. However, the roughness of the free surface of flow and its temporal variation in a pipe is a dynamic and non-stationary process that is difficult to measure directly. This work examines a new acoustic method that is used to study the characteristics of the free surface roughness under controlled laboratory conditions. The acoustic method makes use of a continuous sine wave that is transmitted through the air above the turbulent flow of water over a section of the pipe instrumented with an array of wave probes and microphones. The results obtained for a representative range of flow regimes and variety of pipe bed conditions illustrate that it is possible to unambiguously relate variations in the recorded acoustic field to the standard deviation in the free surface roughness and mean flow depth. These variations are clearly linked to the hydraulic friction factor of the pipe, which is shown to be related to airborne acoustic data obtained non-invasively.

10.
Crit Care Med ; 44(1): 171-9, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26308431

RESUMO

OBJECTIVE: Cerebral edema is common in severe hepatic encephalopathy and may be life threatening. Bolus 23.4% hypertonic saline improves surveillance neuromonitoring scores, although its mechanism of action is not clearly established. We investigated the hypothesis that bolus hypertonic saline decreases cerebral edema in severe hepatic encephalopathy utilizing a quantitative technique to measure brain and cerebrospinal fluid volume changes. DESIGN: Retrospective analysis of serial CT scans, and clinical data for a case-control series were performed. SETTING: ICUs of a tertiary care hospital. PATIENTS: Patients with severe hepatic encephalopathy treated with 23.4% hypertonic saline and control patients who did not receive 23.4% hypertonic saline. INTERVENTIONS: 23.4% hypertonic saline bolus administration. MEASUREMENTS AND MAIN RESULTS: We used clinically obtained CT scans to measure volumes of the ventricles, intracranial cerebrospinal fluid, and brain using a previously validated semiautomated technique (Analyze Direct, Overland Park, KS). Volumes before and after 23.4% hypertonic saline were compared with Wilcoxon signed rank test. Associations among total cerebrospinal fluid volume, ventricular volume, serum sodium, and Glasgow Coma Scale scores were assessed using Spearman rank correlation test. Eleven patients with 18 administrations of 23.4% hypertonic saline met inclusion criteria. Total cerebrospinal fluid (median, 47.6 mL [35.1-69.4 mL] to 61.9 mL [47.7-87.0 mL]; p < 0.001) and ventricular volumes (median, 8.0 mL [6.9-9.5 mL] to 9.2 mL [7.8-11.9 mL]; p = 0.002) increased and Glasgow Coma Scale scores improved (median, 4 [3-6] to 7 [6-9]; p = 0.008) after 23.4% hypertonic saline. In contrast, total cerebrospinal fluid and ventricular volumes decreased in untreated control patients. Serum sodium increase was associated with increase in total cerebrospinal fluid volume (r = 0.83, p < 0.001), and change in total cerebrospinal fluid volume was associated with ventricular volume change (r = 0.86; p < 0.001). CONCLUSIONS: Total cerebrospinal fluid and ventricular volumes increased after 23.4% hypertonic saline, consistent with a reduction in brain tissue volume. Total cerebrospinal fluid and ventricular volume change may be useful quantitative measures to assess cerebral edema in severe hepatic encephalopathy.


Assuntos
Edema Encefálico/diagnóstico por imagem , Edema Encefálico/tratamento farmacológico , Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Solução Salina Hipertônica/administração & dosagem , Tomografia Computadorizada por Raios X , Adulto , Idoso , Edema Encefálico/etiologia , Feminino , Encefalopatia Hepática/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Tamanho do Órgão/efeitos dos fármacos , Estudos Retrospectivos , Solução Salina Hipertônica/farmacologia , Índice de Gravidade de Doença , Adulto Jovem
11.
J Stroke Cerebrovasc Dis ; 23(8): 2036-2040, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25085346

RESUMO

BACKGROUND: Intraventricular hemorrhage (IVH) may be difficult to detect especially when in small amounts and may affect outcomes. The objective of this study was to compare the sensitivity of magnetic resonance imaging (MRI) vs computed tomography (CT) for the identification and quantification of IVH. METHODS: Patients with primary intracerebral hemorrhage were enrolled into a prospective registry between December 2006 and June 2013. Diagnostic and surveillance neuroimaging studies were analyzed for the presence of IVH and quantified by Graeb score. In subjects who developed IVH and underwent both MRI and CT, each MRI was paired with the CT scan done at the closest time point, and Graeb scores were compared with the Wilcoxon signed rank test for related samples. RESULTS: There were 289 subjects in the cohort with IVH found in 171. Sixty-eight pairs of MRI and CT were available for comparison. CT failed to detect IVH in 3% of cases, whereas MRI was 100% sensitive. MRI and CT yielded equal Graeb scores in 72% of the pairs, and MRI Graeb score was higher in 24% (P = .007). CONCLUSIONS: MRI identifies small volumes of IVH in cases not detected by CT and yields higher estimates of intraventricular blood volume. These data indicate that consideration of technical differences is needed when comparing images from the 2 modalities in the evaluation for IVH.


Assuntos
Hemorragia Cerebral/diagnóstico por imagem , Hemorragia Cerebral/patologia , Imageamento por Ressonância Magnética , Tomografia Computadorizada por Raios X , Idoso , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Sensibilidade e Especificidade
12.
Patient Educ Couns ; 122: 108168, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38301598

RESUMO

OBJECTIVE: To explore approaches for developing and implementing interventions aimed at improving health literacy and health-related scientific literacy in disadvantaged groups. METHODS: A scoping review of literature published in 2012-2022 was conducted, followed by quality appraisal of eligible studies. RESULTS: Interventions were conducted mainly in community settings, where the most popular venues were adult education facilities. The primary target groups were those with limited income or education, ethnic minorities, or immigrants. Programs were often held in-person using interactive and culturally appropriate methods. They were predominantly focused on functional and interactive health literacy dimensions rather than on critical and scientific ones. Evaluations measured knowledge, health literacy, behavioral and psychological outcomes using various quantitative and qualitative instruments. CONCLUSIONS: The findings offer a comprehensive overview of the ways to design and evaluate health and scientific literacy interventions tailored to disadvantaged groups. PRACTICE IMPLICATIONS: Future interventions should prioritize participatory designs, culturally appropriate materials, and shift focus to critical and scientific health literacy, as well as to program scalability in less controlled conditions.


Assuntos
Emigrantes e Imigrantes , Letramento em Saúde , Adulto , Humanos , Letramento em Saúde/métodos , Populações Vulneráveis , Conhecimento
13.
Syst Rev ; 13(1): 131, 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38745201

RESUMO

BACKGROUND: The current paradigm of competency-based medical education and learner-centredness requires learners to take an active role in their training. However, deliberate and planned continual assessment and performance improvement is hindered by the fragmented nature of many medical training programs. Attempts to bridge this continuity gap between supervision and feedback through learner handover have been controversial. Learning plans are an alternate educational tool that helps trainees identify their learning needs and facilitate longitudinal assessment by providing supervisors with a roadmap of their goals. Informed by self-regulated learning theory, learning plans may be the answer to track trainees' progress along their learning trajectory. The purpose of this study is to summarise the literature regarding learning plan use specifically in undergraduate medical education and explore the student's role in all stages of learning plan development and implementation. METHODS: Following Arksey and O'Malley's framework, a scoping review will be conducted to explore the use of learning plans in undergraduate medical education. Literature searches will be conducted using multiple databases by a librarian with expertise in scoping reviews. Through an iterative process, inclusion and exclusion criteria will be developed and a data extraction form refined. Data will be analysed using quantitative and qualitative content analyses. DISCUSSION: By summarising the literature on learning plan use in undergraduate medical education, this study aims to better understand how to support self-regulated learning in undergraduate medical education. The results from this project will inform future scholarly work in competency-based medical education at the undergraduate level and have implications for improving feedback and supporting learners at all levels of competence. SCOPING REVIEW REGISTRATION: Open Science Framework osf.io/wvzbx.


Assuntos
Educação de Graduação em Medicina , Aprendizagem , Educação de Graduação em Medicina/métodos , Humanos , Competência Clínica , Educação Baseada em Competências/métodos
14.
Acad Med ; 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38905130

RESUMO

PURPOSE: How to best support self-regulated learning (SRL) skills development and track trainees' progress along their competency-based medical education learning trajectory is unclear. Learning plans (LPs) may be the answer; however, information on their use in undergraduate medical education (UME) is limited. This study summarizes the literature regarding LP use in UME, explores the student's role in LP development and implementation, and identifies additional research areas. METHOD: MEDLINE, Embase, PsycInfo, Education Source, and Web of Science databases were searched for articles published from database inception to March 6, 2024, and relevant reference lists were manually searched. The review included studies of undergraduate medical students, studies of LP use, and studies of the UME stage in any geographic setting. Data were analyzed using quantitative and qualitative content analyses. RESULTS: The database search found 7,871 titles and abstracts with an additional 25 found from the manual search for a total of 7,896 articles, of which 39 met inclusion criteria. Many LPs lacked a guiding framework. LPs were associated with self-reported improved SRL skill development, learning structure, and learning outcomes. Barriers to their use for students and faculty were time to create and implement LPs, lack of training on LP development and implementation, and lack of engagement. Facilitators included SRL skill development, LP cocreation, and guidance by a trained mentor. Identified research gaps include objective outcome measures, longitudinal impact beyond UME, standardized framework for LP development and quality assessment, and training on SRL skills and LPs. CONCLUSIONS: This review demonstrates variability of LP use in UME. LPs appear to have potential to support medical student education and facilitate translation of SRL skills into residency training. Successful use requires training and an experienced mentor. However, more research is required to determine whether benefits of LPs outweigh the resources required for their use.

15.
Nucleic Acid Ther ; 34(2): 90-99, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38215303

RESUMO

RNA interference (RNAi)-based therapeutics hold the potential for dominant genetic disorders, enabling sequence-specific inhibition of pathogenic gene products. We aimed to direct RNAi for the selective suppression of the heterozygous GNAO1 c.607 G > A variant causing GNAO1 encephalopathy. By screening short interfering RNA (siRNA), we showed that GNAO1 c.607G>A is a druggable target for RNAi. The si1488 candidate achieved at least twofold allelic discrimination and downregulated mutant protein to 35%. We created vectorized RNAi by incorporating the si1488 sequence into the short hairpin RNA (shRNA) in the adeno-associated virus (AAV) vector. The shRNA stem and loop were modified to improve the transcription, processing, and guide strand selection. All tested shRNA constructs demonstrated selectivity toward mutant GNAO1, while tweaking hairpin structure only marginally affected the silencing efficiency. The selectivity of shRNA-mediated silencing was confirmed in the context of AAV vector transduction. To conclude, RNAi effectors ranging from siRNA to AAV-RNAi achieve suppression of the pathogenic GNAO1 c.607G>A and discriminate alleles by the single-nucleotide substitution. For gene therapy development, it is crucial to demonstrate the benefit of these RNAi effectors in patient-specific neurons and animal models of the GNAO1 encephalopathy.


Assuntos
Encefalopatias , Terapia Genética , Animais , Humanos , Interferência de RNA , RNA Interferente Pequeno/farmacologia , Alelos , Encefalopatias/genética , Vetores Genéticos/genética , Subunidades alfa Gi-Go de Proteínas de Ligação ao GTP/genética
16.
J Neurosci ; 32(23): 7907-16, 2012 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-22674266

RESUMO

The mammalian accessory olfactory system is specialized for the detection of chemicals that identify kin and conspecifics. Vomeronasal sensory neurons (VSNs) residing in the vomeronasal organ project axons to the accessory olfactory bulb (AOB), where they form synapses with principal neurons known as mitral cells. The organization of this projection is quite precise and is believed to be essential for appropriate function of this system. However, how this precise connectivity is established is unknown. We show here that in mice the vomeronasal duct is open at birth, allowing external chemical stimuli access to sensory neurons, and that these sensory neurons are capable of releasing neurotransmitter to downstream neurons as early as the first postnatal day (P). Using major histocompatibility complex class I peptides to activate a selective subset of VSNs during the first few postnatal days of development, we show that increased activity results in exuberant VSN axonal projections and a delay in axonal coalescence into well defined glomeruli in the AOB. Finally, we show that mitral cell dendritic refinement occurs just after the coalescence of presynaptic axons. Such a mechanism may allow the formation of precise connectivity with specific glomeruli that receive input from sensory neurons expressing the same receptor type.


Assuntos
Vias Neurais/fisiologia , Bulbo Olfatório/fisiologia , Olfato/fisiologia , Órgão Vomeronasal/inervação , Animais , Axônios/fisiologia , Dendritos/efeitos dos fármacos , Dendritos/fisiologia , Eletroporação , Feminino , Liofilização , Expressão Gênica/efeitos dos fármacos , Expressão Gênica/fisiologia , Genes MHC Classe I/genética , Processamento de Imagem Assistida por Computador , Imuno-Histoquímica , Masculino , Camundongos , Camundongos Transgênicos , Microscopia Confocal , Vias Neurais/crescimento & desenvolvimento , Neuropeptídeos/fisiologia , Neuropeptídeos/urina , Bulbo Olfatório/crescimento & desenvolvimento , Neurônios Receptores Olfatórios/fisiologia , Técnicas de Patch-Clamp , Proteínas Proto-Oncogênicas c-fos/metabolismo , Receptores Pré-Sinápticos/fisiologia , Órgão Vomeronasal/crescimento & desenvolvimento , Órgão Vomeronasal/fisiologia
17.
Urogynecology (Phila) ; 29(2): 175-182, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36735431

RESUMO

IMPORTANCE: Constipation is common after pelvic surgery, and studies suggest that surgeons underestimate the negative impact of constipation on patients. Patients undergoing pelvic reconstructive surgery are a unique population requiring special consideration in the prevention and management of constipation. OBJECTIVE: This study aimed to systematically review the literature to identify evidence for prevention of postoperative constipation with medications or fiber in patients undergoing reconstructive pelvic surgery. STUDY DESIGN: A structured literature search was performed of five databases (MEDLINE, Embase, Scopus, Web of Science, the Cochrane Library) from inception to June 2022 for studies of postoperative laxative or fiber use in adult patients undergoing benign pelvic reconstructive surgery. Studies of preoperative bowel preparation and nonsurgical patients were excluded. Data on postoperative constipation were extracted for a qualitative analysis of the literature. Grading of Recommendations Assessment, Development, and Evaluation methodology was applied to assess the quality of evidence. RESULTS: We identified 86 references after deduplication. Only 4 studies with a total of 344 patients were eligible for inclusion in the review. The included studies were all randomized controlled trials assessing time to first bowel movement with the earliest published in 2010. Laxative use decreased constipation more than placebo. Multiple-agent laxative use appeared to decrease bothersome constipation more than single-agent docusate. Preoperative fiber did not decrease constipation. By Grading of Recommendations Assessment, Development, and Evaluation criteria, all four studies provide moderate-quality evidence. CONCLUSIONS: Few studies have investigated laxative regimens in patients after urogynecologic surgery. The available literature is moderate quality and suggests benefit of multiple-agent treatment over docusate only or no treatment.


Assuntos
Ácido Dioctil Sulfossuccínico , Laxantes , Adulto , Humanos , Laxantes/uso terapêutico , Ácido Dioctil Sulfossuccínico/farmacologia , Constipação Intestinal/etiologia , Defecação
18.
Urogynecology (Phila) ; 29(2): 160-167, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36735429

RESUMO

IMPORTANCE: Sacrospinous ligament fixation is a prolapse repair surgical procedure that can be performed under general or regional anesthesia. Little is known about the impact of anesthesia on postoperative outcomes. OBJECTIVES: The primary objective of this study was to compare 30-day complication rates for patients undergoing sacrospinous ligament fixation by anesthesia type. Secondary objectives were to assess factors associated with type of anesthesia selected. STUDY DESIGN: This was a retrospective cohort analysis of the American College of Surgeons National Surgical Quality Improvement Program for the years of 2015 to 2020. Cases were selected based on procedural codes for sacrospinous ligament fixation and diagnostic codes for prolapse. Complications, readmissions, and reoperations were compared between general versus regional anesthesia cohorts. RESULTS: A total of 2,984 cases were included with 2,742 (91.9%) performed under general and 242 (8.1%) performed under regional anesthesia. The regional anesthesia cohort was older (69.2 vs 65.4 years old; P < 0.001) with no differences in medical history variables. Fewer patients in the regional anesthesia cohort were Hispanic (0.4% in regional vs 10.8% in general cohorts, P < 0.001). More superficial surgical site infections (2.5% vs 0.8%, P = 0.026) and cardiac complications (0.8% vs 0.1%, P = 0.035) were noted in the regional anesthesia cohort. However, multivariable regression analysis showed that anesthesia type was not associated with increased rates of minor or major complications. CONCLUSIONS: Mode of anesthesia was not a significant predictor of minor or major complications. Racial and ethnic differences in mode of anesthesia warrant further investigation to reduce racial disparities.


Assuntos
Anestesia por Condução , Prolapso de Órgão Pélvico , Feminino , Humanos , Idoso , Estudos Retrospectivos , Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Ligamentos Articulares/cirurgia , Prolapso de Órgão Pélvico/cirurgia , Anestesia por Condução/efeitos adversos
19.
Female Pelvic Med Reconstr Surg ; 28(3): e66-e72, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-35272336

RESUMO

OBJECTIVE: The aim of the study was to compare national surgical practice patterns of performing apical suspension procedures (ASPs) at the time of hysterectomy for pelvic organ prolapse (POP) before and after the publication of the American College of Obstetricians and Gynecologists (ACOG) 2017 Practice Bulletin on POP. METHODS: The American College of Surgeons National Surgical Quality Improvement Program database was queried for hysterectomy cases performed for POP indications for the years 2015-2016 and 2018-2019. The primary outcome was the use of ASP at the time of hysterectomy for POP. Secondary outcomes included the use of anterior, posterior, and paravaginal prolapse repair procedures. Multivariable regression analysis was performed to identify factors associated with performing a hysterectomy without an ASP. RESULTS: A total of 11,336 cases were included, and apical prolapse was the primary POP diagnosis in 86.3% of these cases. There was no statistically significant change in the utilization of ASPs in 2018-2019 compared with 2015-2016 (51.4% vs 49.8%, P = 0.081). Urogynecologists were significantly more likely than general gynecologists to perform ASPs (65.6% vs 37.5%, P < 0.001), which was confirmed on multivariable logistic regression analysis (adjusted odds ratio, 3.257; P < 0.001). The use of concomitant anterior repairs (44.1% vs 39.5%, P < 0.001) and posterior repairs (47.5% vs 41.3%, P < 0.001) increased in the 2018-2019 cohort. CONCLUSIONS: There was no overall increase in the utilization of concomitant ASPs at the time of hysterectomy done for POP indications despite the 2017 American College of Obstetricians and Gynecologists practice bulletin. Urogynecologists were more likely to perform ASPs than general gynecologists.


Assuntos
Ginecologia , Prolapso de Órgão Pélvico , Colpotomia , Feminino , Humanos , Histerectomia/métodos , Prolapso de Órgão Pélvico/cirurgia , Gravidez , Estudos Retrospectivos , Estados Unidos
20.
Children (Basel) ; 9(1)2022 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-35053696

RESUMO

BACKGROUND: Surgery is the current mainstay for the treatment of urachal anomalies (UA). Recent literature data support the theory of a spontaneous resolution within the first year of life. The aim of this study, comprising solely surgically treated children, was to identify age specific patterns regarding symptoms and outcomes that may support the non-surgical treatment of UA. METHODS: Retrospective review on the clinico-laboratory characteristics of 52 children aged < 17 years undergoing resection of symptomatic UA at our pediatric surgical unit during 2006-2017. Data was dichotomized into age > 1 (n = 17) versus < 1 year (n = 35), and complicated (pre-/post-surgical abscess formation or peritonitis, n = 10) versus non-complicated course (n = 42). RESULTS: Children aged < 1 year comprised majority (67%) of cohort and had lower complication rates (p = 0.062). Complicated course at surgery exclusively occurred in patients aged > 1 year (p = 0.003). Additionally, complicated group was older (p = 0.018), displayed leukocytosis (p < 0.001) and higher frequencies regarding presence of abdominal pain (p = 0.008) and abdominal mass (p = 0.034) on admission. Regression analysis identified present abdominal pain (OR (95% CI), 11.121 (1.152-107.337); p = 0.037) and leukocytosis (1.435 (1.070-1.925); p = 0.016) being associated with complicated course. CONCLUSIONS: This study provides evidence that symptomatic disease course follows an age-dependent complication pattern with lower complication rates at age < 1 year. Larger, studies have to clarify, if waiting for spontaneous urachal obliteration during the first year of life comprises a reasonable alternative to surgery.

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