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Thrombotic microangiopathy (TMA) is a condition characterized by hemolytic anemia, thrombocytopenia, and organ damage due to the formation of microthrombi. It can be classified as primary or secondary, with secondary TMA being associated with conditions such as infections, autoimmune diseases, and malignancies. This report details the case of a 39-year-old male with secondary TMA, exploring the potential roles of malignant hypertension and HIV infection with the aim of examining the potential link between malignant hypertension and HIV infection in the development of TMA, highlighting the need for a thorough and broad diagnostic approach.
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Importance: Federally qualified health centers (FQHCs) provide care to 30 million patients in the US and have shown better outcomes and processes than other practice types. Little is known about how the COVID-19 pandemic contributed to FQHC capabilities compared with other practices. Objective: To compare postpandemic operational characteristics and capabilities of FQHCs with non-FQHC safety net practices and non-FQHC, non-safety net practices. Design, Setting, and Participants: This nationally representative survey conducted from June 2022 to February 2023 with an oversampling of safety net practices in the US included practice leaders working in stratified random selection of practices based on FQHC status, Area Deprivation Index category, and ownership type per a health care network dataset. Exposures: Practice type: FQHC vs non-FQHC safety net and non-FQHC practices. Main Outcomes and Measures: Primary care capabilities, including 2 measures of access and 11 composite measures. Results: A total of 1245 practices (221 FQHC and 1024 non-FQHC) responded of 3498 practices sampled. FQHCs were more likely to be independently owned and have received COVID-19 funding. FQHCs and non-FQHC safety net practices were more likely to be in rural areas. FQHCs significantly outperformed non-FQHCs on several capabilities even after controlling for practice size and ownership, including behavioral health provision (mean score, 0.53; 95% CI, 0.51-0.56), culturally informed services (mean score, 0.55; 95% CI, 0.53-0.58), screening for social needs (mean score, 0.43; 95% CI, 0.39-0.47), social needs referrals (mean score, 0.53; 95% CI, 0.48-0.57), social needs referral follow-up (mean score, 0.31; 95% CI, 0.27-0.36), and shared decision-making and motivational interviewing training (mean score, 0.53; 95% CI, 0.51-0.56). No differences were found in behavioral and substance use screening, care processes for patients with complex and high levels of need, use of patient-reported outcome measures, decision aid use, or after-hours access. Across all practices, most of the examined capabilities showed room for improvement. Conclusions and Relevance: The results of this survey study suggest that FQHCs outperformed non-FQHC practices on important care processes while serving a patient population with lower incomes who are medically underserved compared with patients in other practice types. Legislation to expand funding for the FQHC program should improve services for underserved populations and target current non-FQHC safety net practices to serve these populations. Increased support for these practices could improve primary care for rural populations.
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COVID-19 , Atenção Primária à Saúde , Provedores de Redes de Segurança , Humanos , COVID-19/epidemiologia , Atenção Primária à Saúde/organização & administração , Estados Unidos/epidemiologia , Acessibilidade aos Serviços de Saúde , Pandemias , Inquéritos e QuestionáriosRESUMO
Candida auris, an emerging multidrug-resistant yeast, has become a global concern due to its association with nosocomial outbreaks and resistance to antifungal medications. The COVID-19 pandemic has exacerbated the situation, with several outbreaks reported worldwide, including in Mexico. We describe the clinical and microbiological characteristics of a multicentric outbreak in private institutions in Mexico. A retrospective observational study was conducted across four Christus Muguerza Hospital Health Care System facilities in Monterrey, Mexico, where simultaneous outbreaks of C. auris occurred. Patients with colonization or infection with C. auris between September 2020 and December 2023 were included. Analysis revealed 37 cases, predominantly male (median age, 55.8 years). While most cases were initially colonization, a significant proportion progressed to infection (32.4%). Patients with documented infection had longer ICU and hospital stays, often requiring mechanical ventilation. Antifungal treatment varied, with empirical fluconazole being the first drug in most cases, followed by anidulafungin and caspofungin. Resistance to fluconazole was widespread, but susceptibility to other antifungals varied. Overall mortality rates were high (40.5%), with no significant difference in median survival between colonized and infected patients.
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OBJECTIVES: Oronasal fistulas are common sequelae following cleft lip and palate surgery and can significantly impact a patient's quality of life. They result from various factors, including surgical techniques, tissue management, and patient-specific factors. This case report explores the modern approach to oronasal fistula closure using periodontal plastic surgery principles. MATERIALS AND METHODS: The report presents two cases of patients with oronasal fistulas due to previous maxillofacial surgical intervention. These patients underwent microsurgical procedures that involved partial flap thickness preparation of the fistula areas, the use of connective tissue grafts from the palate, and meticulous suturing techniques to ensure graft integrity. The procedures were performed in stages, and postoperative care was provided. RESULTS: Both cases demonstrated successful fistula closure and graft survival. The patients reported improvements in breathing, speech, aesthetics, and quality of life. The second case also included guided bone regeneration and implant placement. CONCLUSIONS: Oronasal fistulas resulting from maxillofacial surgery can be effectively treated using periodontal plastic surgery techniques, significantly improving patients' quality of life and aesthetic outcomes. This approach represents a valuable addition to the existing repertoire of oronasal fistula closure methods.
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Fissura Palatina , Fístula Bucal , Procedimentos de Cirurgia Plástica , Humanos , Fístula Bucal/cirurgia , Fístula Bucal/etiologia , Procedimentos de Cirurgia Plástica/métodos , Fissura Palatina/cirurgia , Feminino , Masculino , Doenças Nasais/cirurgia , Retalhos Cirúrgicos/transplante , Fenda Labial/cirurgia , Qualidade de Vida , Adulto , Resultado do TratamentoRESUMO
OBJECTIVE: Microsurgical interventions involve the interaction of numerous variables, making objective analysis of skill proficiency challenging. This difficulty is even more pronounced in low-resource contexts. Continuous improvement methodologies such as Kaizen-planning, doing, checking, acting (PDCA) and micromovements science (MMS) can address this issue. This study aimed to demonstrate the advantages of designing and implementing microsurgical training programs using these methodologies. METHODS: Following an extensive literature review of Kaizen-PDCA and MMS, and under the guidance of experienced neurosurgeons and engineers, a microvascular bypass training program was developed using the human placenta. Subsequently, the training program was used to analyze and describe the process of a trainee neurosurgeon in Argentina with no prior experience in microvascular anastomosis, as the operator gained proficiency. RESULTS: The trainee required 12 attempts to achieve the program goals. The longest procedural time was during the first attempt (1 hour 49 minutes 05 seconds with 2 mistakes), while the shortest time was during the fourth attempt (53 minutes 29 seconds with 3 mistakes). After 12 attempts, the trainee made no mistakes, and the procedural time was reduced to 57 minutes 37 seconds. The final learning curve demonstrated a regular pattern and reached a plateau after 7 attempts. CONCLUSIONS: The training program and methodology effectively assessed, facilitated, and demonstrated the acquisition of microsurgical skills. Kaizen-PDCA and MMS enabled the effective use of expert experience, detailed evaluation of microsurgical procedures, and integration into a continuous improvement cycle. The program structure could also be valuable for teaching, evaluating, and enhancing similar surgical procedures.
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INTRODUCTION/OBJECTIVES: More time spent with interpreters may support clinician-patient communication for patients with limited English proficiency (LEP), especially when interpreter support before and after clinical encounters is considered. We assessed whether more time spent with interpreters is associated with better patient-reported experiences of clinician-patient communication and interpreter support among patients with LEP. METHODS: Patients with LEP (n = 338) were surveyed about their experiences with both the clinician and interpreter. Duration of interpreter support during the encounter (in min) and auxiliary time spent before and after encounters supporting patients (in min) were documented by interpreters. Multivariable linear regression models were estimated to assess the association of the time duration of interpreter support and patient experiences of (1) clinician-patient communication, and (2) interpreter support, controlling for patient and encounter characteristics. RESULTS: The average encounter duration was 47.7 min (standard deviation, SD = 25.1), the average auxiliary time was 43.8 min (SD = 16.4), and the average total interpreter time was 91.1 min (SD = 28.6). LEP patients reported better experiences of interpreter support with a mean score of 97.4 out of 100 (SD = 6.99) compared to clinician-patient communication, with a mean score of 93.7 out of 100 (SD = 14.1). In adjusted analyses, total patient time spent with an interpreter was associated with better patient experiences of clinician-patient communication (ß = 7.23, P < .01) when auxiliary time spent by interpreters supporting patients before and after the encounter was considered, but not when only the encounter time was considered. CONCLUSIONS: Longer duration of time spent with an interpreter was associated with better clinician-patient communication for patients with LEP when time spent with an interpreter before and after the clinician encounter is considered. Policymakers should consider reimbursing health care organizations for time interpreters spend providing patient navigation and other support beyond clinical encounters.
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Proficiência Limitada em Inglês , Relações Médico-Paciente , Tradução , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Fatores de Tempo , Satisfação do Paciente , Barreiras de Comunicação , Idoso , ComunicaçãoRESUMO
This study characterized adult primary care medical assistant (MA) staffing. National Survey of Healthcare Organizations and Systems (n = 1,252) data were analyzed to examine primary care practice characteristics associated with MA per primary care clinician (PCC) staffing ratios. In 2021, few practices (11.4%) had ratios of 2 or more MAs per PCCs. Compared with system-owned practices, independent (odds ratio [OR] = 1.76, P <0.05) and medical group-owned (OR = 2.09, P <0.05) practices were more likely to have ratios of 2 or more MAs per PCCs, as were practices with organizational cultures oriented to innovation (P <0.05). Most primary care practices do not have adequate MA staffing.
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Atenção Primária à Saúde , Humanos , Atenção Primária à Saúde/organização & administração , Estados Unidos , Admissão e Escalonamento de Pessoal , Recursos Humanos , Assistentes Médicos/provisão & distribuição , Assistentes Médicos/estatística & dados numéricos , Adulto , Cultura OrganizacionalRESUMO
The cell membrane protein, dystroglycan, plays a crucial role in connecting the cytoskeleton of a variety of mammalian cells to the extracellular matrix. The α-subunit of dystroglycan (αDG) is characterized by a high level of glycosylation, including a unique O-mannosyl matriglycan. This specific glycosylation is essential for binding of αDG to extracellular matrix ligands effectively. A subset of muscular dystrophies, called dystroglycanopathies, are associated with aberrant, dysfunctional glycosylation of αDG. This defect prevents myocytes from attaching to the basal membrane, leading to contraction-induced injury. Here, we describe a novel Western blot (WB) assay for determining levels of αDG glycosylation in skeletal muscle tissue. The assay described involves extracting proteins from fine needle tibialis anterior (TA) biopsies and separation using SDS-PAGE followed by WB. Glycosylated and core αDG are then detected in a multiplexed format using fluorescent antibodies. A practical application of this assay is demonstrated with samples from normal donors and patients diagnosed with LGMD2I/R9. Quantitative analysis of the WB, which employed the use of a normal TA derived calibration curve, revealed significantly reduced levels of αDG in patient biopsies relative to unaffected TA. Importantly, the assay was able to distinguish between the L276I homozygous patients and a more severe form of clinical disease observed with other FKRP variants. Data demonstrating the accuracy and reliability of the assay are also presented, which further supports the potential utility of this novel assay to monitor changes in âºDG of TA muscle biopsies in the evaluation of potential therapeutics.
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Western Blotting , Distroglicanas , Músculo Esquelético , Distrofia Muscular do Cíngulo dos Membros , Humanos , Distroglicanas/metabolismo , Distrofia Muscular do Cíngulo dos Membros/metabolismo , Distrofia Muscular do Cíngulo dos Membros/patologia , Músculo Esquelético/metabolismo , Músculo Esquelético/patologia , Western Blotting/métodos , Glicosilação , Masculino , FemininoRESUMO
BACKGROUND: Prolonged fetal exposure to hyperglycemia may increase the risk of developing abnormal glucose metabolism and type-2 diabetes during childhood, adolescence, and adulthood; however, the mechanisms by which gestational diabetes mellitus (GDM) predisposes offspring to metabolic disorders remain unknown. AIM: To quantify the nerve axons, macrophages, and vasculature in the pancreas from adult offspring born from mouse dams with GDM. METHODS: GDM was induced by i.p. administration of streptozotocin (STZ) in ICR mouse dams. At 12 wk old, fasting blood glucose levels were determined in offspring. At 15 wk old, female offspring born from dams with and without GDM were sacrificed and pancreata were processed for immunohistochemistry. We quantified the density of sensory [calcitonin gene-related peptide (CGRP)] and tyrosine hydroxylase (TH) axons, blood vessels (endomucin), and macro-phages (CD68) in the splenic pancreas using confocal microscopy. RESULTS: Offspring mice born from STZ-treated dams had similar body weight and blood glucose values compared to offspring born from vehicle-treated dams. However, the density of CGRP+ and TH+ axons, endomucin+ blood vessels, and CD68+ macrophages in the exocrine pancreas was significantly greater in offspring from mothers with GDM vs control offspring. Likewise, the microvasculature in the islets was significantly greater, but not the number of macrophages within the islets of offspring born from dams with GDM compared to control mice. CONCLUSION: GDM induces neuronal, vascular, and inflammatory changes in the pancreas of adult progeny, which may partially explain the higher propensity for offspring of mothers with GDM to develop metabolic diseases.
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The initial exposure to pathogens and commensals confers innate immune cells the capacity to respond distinctively upon a second stimulus. This training capacity might play key functions in developing an adequate innate immune response to the continuous exposure to bacteria. However, the mechanisms involved in induction of trained immunity by commensals remain mostly unexplored. A. muciniphila represents an attractive candidate to study the promotion of these long-term responses. Here, we show that priming of macrophages with live A. muciniphila enhances bacterial intracellular survival and decreases the release of pro- and anti-inflammatory signals, lowering the production of TNF and IL-10. Global transcriptional analysis of macrophages after a secondary exposure to the bacteria showed the transcriptional rearrangement underpinning the phenotype observed compared to acutely exposed cells, with the increased expression of genes related to phagocytic capacity and those involved in the metabolic adjustment conducing to innate immune training. Accordingly, key genes related to bacterial killing and pro-inflammatory pathways were downregulated. These data demonstrate the importance of specific bacterial members in the modulation of local long-term innate immune responses, broadening our knowledge of the association between gut microbiome commensals and trained immunity as well as the anti-inflammatory probiotic potential of A. muciniphila.
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Inflamação , Verrucomicrobia , Humanos , Inflamação/genética , Verrucomicrobia/genética , Verrucomicrobia/metabolismo , Fenótipo , Anti-Inflamatórios/metabolismo , AkkermansiaRESUMO
BACKGROUND: Disparities in diabetes care quality may have increased for patients with limited English language proficiency (LEP) compared to non-LEP patients during the COVID-19 pandemic. Changes in diabetes care quality for adult LEP and non-LEP patients of community health centers (CHCs) were examined from 2019 to 2020. METHODS: Adults with Type 2 diabetes (n = 15 965) of 88 CHC sites in California and with 1+ visit/year in 2019 and 2020 from OCHIN electronic health record data were included. Multivariable regression models estimated the association of LEP status and changes in diabetes care quality from 2019 to 2020, controlling for patient sociodemographic and clinical characteristics. Interaction terms (LEP × 2020) were used to estimate differential over time changes in (1) blood pressure screening, (2) blood pressure control (<140/90 mm Hg), and (3) hemoglobin A1c control (HbA1c <8%) for LEP versus non-LEP patients. RESULTS: LEP and non-LEP patients with diabetes had comparable blood pressure screening and control in 2019 and in 2020. LEP patients were less likely than non-LEP patients to have their HbA1c under control in 2019 (OR = 0.85, 95% CI = 0.77, 0.96, P = .006) and 2020 (OR = 0.83, 95% CI = 0.75, 0.92, P = .001). There were no differential changes in HbA1c control over time for LEP and non-LEP patients. DISCUSSION: Although LEP patients were less likely than non-LEP patients to have their HbA1c under control, CHCs maintained quality of care equally for LEP and non-LEP patients with diabetes during the early pandemic period.
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COVID-19 , Diabetes Mellitus Tipo 2 , Adulto , Humanos , Pandemias , Hemoglobinas Glicadas , Barreiras de Comunicação , Qualidade da Assistência à Saúde , Linguística , California , Centros Comunitários de SaúdeRESUMO
Lignin is a very attractive and abundant biopolymer with the potential to be a biorenewable source of a large number of value-added organic chemicals. The current state-of-the-art methods fail to provide efficient valorization of lignin in this regard without the involvement of harsh conditions and auxiliary substances that compromise the overall sustainability of the proposed processes. Making an original approach from the set of mildest temperature and pressure conditions, this work identifies and explores the capacity of an aqueous solution of the nonvolatile ionic liquid 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]) to partially depolymerize technical lignin (Indulin AT) by means of a treatment consisting in the simple contact at ambient temperature and pressure. Among a considerable number of valuable phenolic molecules that were identified in the resulting fluid, vanillin (yield of about 3 g/kg) and guaiacol (yield of about 1 g/kg) were the monophenolic compounds obtained in a higher concentration. The properties of the post-treatment solids recovered remain similar to those of the original lignin, although with a relatively lower abundance of guaiacyl units (in agreement with the generation of guaiacyl-derived phenolic molecules, such as vanillin and guaiacol). The assistance of the treatment with UV irradiation in the presence of nanoparticle catalysts does not lead to an improvement in the yields of phenolic compounds.
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Benzaldeídos , Imidazóis , Líquidos Iônicos , Líquidos Iônicos/química , Lignina/química , Temperatura , Biomassa , Água , Acetatos , Fenóis , GuaiacolRESUMO
Holstein cattle carrying a prolactin receptor gene mutation (SLICK) exhibit short and sleek hair coats (short-haired Holstein [SLK]) enhancing thermotolerance and productivity compared with wild type-haired Holstein (WT) under tropical conditions. The objectives were to unravel the physiological and molecular mechanisms that confer an advantage to this slick genotype in Puerto Rico and determine potential correlations between metabolites and physiological variables. At 160 ± 3 DIM we compared vaginal temperatures (VT) and voluntary solar radiation exposure (VSRE) during 48 h between 9 SLK and 9 WT Holsteins, whereas a subsample of 7 SLK and 7 WT were used to assess udder skin temperature, mammary gland hemodynamics and transcriptomics, and blood plasma untargeted metabolomics at a single time point. The SLK cattle showed lower VT throughout the day and greater VSRE at 1000 h and 1100 h compared with their WT counterparts. Total mammary blood flow (MBF) was greater in SLK Holsteins compared with WT. The metabolite 9-nitrooctadecenoic acid was identified as a potential biomarker for MBF; moreover, SLK cattle had greater amounts of this metabolite in their plasma. Prostaglandin D2 synthase (PTGS) was upregulated in the slick mammary gland, while plasma prostaglandin D2 was positively correlated with milk yield and increased in SLK Holsteins compared with WT. Interestingly, the arachidonic acid metabolism pathway was enriched in the mammary gland transcriptome and perturbed in the blood metabolome in the SLK Holsteins. In conclusion, SLK Holsteins exhibited lower body temperatures, greater VSRE, enhanced blood supply to the mammary gland, and alterations in genes and metabolites involved in arachidonic acid metabolism at the mammary gland and blood plasma. The usage of the SLK Holstein cattle genetics in dairy operations could be a feasible alternative to mitigate the adverse consequences of heat stress.
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Lactação , Glândulas Mamárias Animais , Animais , Bovinos , Feminino , Glândulas Mamárias Animais/metabolismo , Porto Rico , Hemodinâmica , Transcriptoma , MetabolômicaRESUMO
OBJECTIVES: To identify hospital capabilities associated with behavioral health (BH) processes in emergency departments (EDs). RESEARCH DESIGN: Six hundred two hospital responses to the 2017/2018 National Survey of Healthcare Organizations and Systems were linked to 2017 American Hospital Association Annual Survey data. Separate multivariable regressions estimated how hospital capabilities (the use of quality improvement methods, approaches to disseminate best patient-care practices, barriers to using care delivery innovations, and inpatient beds for psychiatric or substance use) were associated with each of 4 ED-based BH processes: mental health and substance use disorder screening, team-based approaches to BH, telepsychiatry, and direct referrals to community-based BH clinicians. Models controlled for hospital structural characteristics and area-level socioeconomic factors. RESULTS: Most hospitals screened for BH conditions and provided direct referrals to community-based BH clinicians. Approximately half of the hospitals used a team approach to BH. A minority had implemented telepsychiatry. Each additional process used to disseminate best patient-care practices was associated with more screening for BH conditions (an increase of 4.07 points on the screening index, P <0.01) and greater likelihood of using a team approach to BH [4.41 percentage point ( P <0.01) increase]. Hospitals reporting more barriers to the use of care delivery innovations reported less screening and use of a team approach [a decrease of 0.15 points on the screening index ( P <0.01) and 0.28 percentage points reduction in likelihood of team approach use ( P <0.001) for 1-point increase in the barrier index]. CONCLUSIONS: Research and interventions focused on removing innovation barriers or adding processes to disseminate best practices offer a path to accelerate BH integration in hospital EDs.
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Psiquiatria , Transtornos Relacionados ao Uso de Substâncias , Telemedicina , Humanos , Hospitais , Serviço Hospitalar de EmergênciaRESUMO
Phenolic compounds are important constituents of plant food products. These compounds play a key role in food characteristics such as flavor, astringency and color. Lactic acid bacteria are naturally found in raw vegetables, being Lactiplantibacillus plantarum the most commonly used commercial starter for the fermentation of plant foods. Hence, the metabolism of phenolic compounds of L. plantarum has been a subject of study in recent decades. Such studies confirm that L. plantarum, in addition to presenting catalytic capacity to transform aromatic alcohols and phenolic glycosides, exhibits two main differentiated metabolic routes that allow the biotransformation of dietary hydroxybenzoic and hydroxycinnamic acid-derived compounds. These metabolic pathways lead to the production of new compounds with new biological and organoleptic properties. The described metabolic pathways involve the action of specialized esterases, decarboxylases and reductases that have been identified through genetic analysis and biochemically characterized. The purpose of this review is to provide a comprehensive and up-to-date summary of the current knowledge of the metabolism of food phenolics in L. plantarum.
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Lactobacillus plantarum , Fenóis , Fenóis/análise , Lactobacillus/metabolismo , Lactobacillus plantarum/genética , Lactobacillus plantarum/metabolismo , Alimentos , Ácidos Cumáricos/metabolismo , FermentaçãoRESUMO
Background: Telemedicine systems were rapidly implemented in response to COVID-19. However, little is known about their effectiveness, acceptability, and sustainability for safety net populations. This study systematically reviewed primary care telemedicine implementation and effectiveness in safety net settings. Methods: We searched PubMed for peer-reviewed articles on telemedicine implementation from 2013 to 2021. The search was done between June and December 2021. Included articles focused on health care organizations that primarily serve low-income and/or rural populations in the United States. We screened 244 articles from an initial search of 343 articles and extracted and analyzed data from N = 45 articles. Results: Nine (20%) of 45 articles were randomized controlled trials. N = 22 reported findings for at least one marginalized group (i.e., racial/ethnic minority, 65 years+, limited English proficiency). Only n = 19 (42%) included African American/Black patients in demographics descriptions, n = 14 (31%) LatinX/Hispanic patients, n = 4 (9%) Asian patients, n = 4 (9%) patients aged 65+ years, and n = 4 (9%) patients with limited English proficiency. Results show telemedicine can provide high-quality primary care that is more accessible and affordable. Fifteen studies assessed barriers and facilitators to telemedicine implementation. Common barriers were billing/administrative workflow disruption (n = 9, 20%), broadband access/quality (n = 5, 11%), and patient preference for in-person care (n = 4, 9%). Facilitators included efficiency gains (n = 6, 13%), patient acceptance (n = 3, 7%), and enhanced access (n = 3, 7%). Conclusions: Telemedicine is an acceptable care modality to deliver primary care in safety net settings. Future studies should compare telemedicine and in-person care quality and test strategies to improve telemedicine implementation in safety net settings.
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Provedores de Redes de Segurança , Telemedicina , Humanos , Etnicidade , Grupos Minoritários , Pobreza , Telemedicina/métodos , Estados UnidosRESUMO
The histology of blood vessels shows they are structured in three layers or tunics: tunica intima, which includes the internal limiting lamina with high elastin content; tunica media of smooth muscles fibers of circular disposition, which includes the external limiting lamina; and tunica adventitia of connective tissue. The vascular system is essential in regulating body temperature, especially in the scrotum and testis. This study aimed to analyze the histology of the scrotal arteries and their possible relationship to testicular temperature homeostasis. This study used scrotal samples from human adults, anonymized and obtained from the University of Chile's teaching bank. The control group corresponds to an arteriole of muscle tissue. The results show that the middle layer of the scrotal artery is made up of smooth muscle fibers distributed in two layers: a longitudinal inner sublayer and a circular outer sublayer, different from the findings in muscle tissue arteries, with a single, circularly arranged muscle layer. This arrangement could be related to testicular temperature homeostasis by reducing the temperature of the testis and seminiferous tubules. The results described in this work suggest that these anatomical adaptations may be very significant in the face of the constant increase in global temperature. Further and better research is required to understand the mechanisms of thermoregulation in human reproduction and the histological particularities of the tissues that form the scrotum. RESEARCH HIGHLIGHTS: The human scrotal artery has a histological composition adapted for regulation of testicular temperature. The muscular double middle layer of the scrotal artery retains intravascular temperature.
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Túnica Adventícia , Escroto , Masculino , Adulto , Humanos , Escroto/fisiologia , Biodiversidade , Temperatura , Testículo/fisiologia , Artérias/fisiologia , Regulação da Temperatura Corporal/fisiologiaRESUMO
Background: Telemedicine has been differentially utilized by different demographic groups during COVID-19, exacerbating inequities in health care. We conducted conjoint and latent class analyses to understand factors that shape patient preferences for hypertension management telemedicine appointments. Methods: We surveyed 320 adults, oversampling participants from households that earned <$50K per year (77.2%) and speak a language other than English at home (68.8%). We asked them to choose among 2 hypothetical appointments through 12 conjoint tasks measuring 6 attributes. Individual utilities for attributes were constructed using logit estimation, and latent classes were identified and compared by demographic and clinical characteristics. Results: Respondents preferred in-person visits (0.353, standard error [SE] = 0.039) and video appointments conducted through a secure patient portal (0.002, SE = 0.040). Respondents also preferred seeing a clinician with whom they have an established relationship (0.168, SE = 0.021). We found four latent classes: "in-person" (26.5% of participants) who strongly weighted in-person appointments, "cost conscious" (8.1%) who prioritized the lowest copay ($0 to $10), "expedited" (19.7%) who prioritized getting the earliest appointment possible (same/next day or at least within the next week), and "comprehensive" (45.6%) who had preferences for in-person care and telemedicine appointments through a secure portal, low copayments, and the ability to see a familiar clinician. Conclusions: Appointment preferences for hypertension management can be segmented into four groups that prioritize (1) in-person care, (2) low copayments, (3) expedited care, and (4) balanced preferences for in-person and telemedicine appointments. Evidence is needed to clarify whether aligning appointment offerings with patients' preferences can improve care quality, equity, and efficiency.