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1.
J Natl Compr Canc Netw ; 22(7): 483-506, 2024 09.
Artigo em Inglês | MEDLINE | ID: mdl-39236759

RESUMO

The NCCN Guidelines for Cancer-Associated Venous Thromboembolic Disease provide strategies for the prevention, diagnosis, and treatment of venous thromboembolism (VTE) in adult patients with cancer. VTE is a common and life-threatening condition in patients with cancer, and its management often requires multidisciplinary efforts. The NCCN panel is comprised of specialists spanning various fields, including cardiology, hematology, medical oncology, internal medicine, interventional radiology, and pharmacology. The content featured in this issue specifically addresses the evaluation and recommended treatment options outlined in the NCCN Guidelines for the diverse subtypes of cancer-associated VTE.


Assuntos
Neoplasias , Tromboembolia Venosa , Humanos , Tromboembolia Venosa/etiologia , Tromboembolia Venosa/diagnóstico , Tromboembolia Venosa/terapia , Tromboembolia Venosa/prevenção & controle , Neoplasias/complicações , Neoplasias/terapia , Neoplasias/diagnóstico , Oncologia/normas , Oncologia/métodos , Anticoagulantes/uso terapêutico , Gerenciamento Clínico
2.
Physiology (Bethesda) ; 37(6): 0, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-35820181

RESUMO

Peripheral nerve injuries often result in life-altering functional deficits even with optimal management. Unlike the central nervous system, peripheral nerves have the ability to regenerate lost axons after injury; however, axonal regeneration does not equate to full restoration of function. To overcome this physiological shortcoming, advances in nerve regeneration and repair are paramount, including electrical stimulation, gene therapy, and surgical technique advancements.


Assuntos
Regeneração Nervosa , Traumatismos dos Nervos Periféricos , Axônios/fisiologia , Estimulação Elétrica/métodos , Terapia Genética , Humanos , Regeneração Nervosa/fisiologia , Traumatismos dos Nervos Periféricos/terapia , Nervos Periféricos/fisiologia
3.
Aust J Rural Health ; 31(5): 897-905, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37434305

RESUMO

OBJECTIVE(S): Life and limb threatening vascular emergencies often present to rural hospitals where only general surgery services are available. It is known that Australian rural general surgical centres encounter 10-20 emergency vascular surgery procedures annually. This study aimed to assess rural general surgeons' confidence managing emergent vascular procedures. SETTING, PARTICIPANTS AND DESIGN: A survey was distributed to Australian rural general surgeons to determine their confidence (Yes/No) in performing emergent vascular procedures including limb revascularisation, revising arterio-venous (AV) fistulas, open repair of ruptured abdominal aortic aneurysm (AAA), superior mesenteric artery (SMA)/coeliac embolectomy, limb embolectomy, vascular access catheter insertion and limb amputation (digit, forefoot, below knee and above knee). Confidence level was compared with surgeon demographics and training. Variables were compared using univariate logistic regression. RESULTS: Sixteen per cent (67/410) of all Australian rural general surgeons responded to the survey. Increased age, years since fellowship and training prior to 1995 (when separation of Australian vascular and general surgery occurred) were associated with greater confidence in limb revascularisation, revising AV fistulas, open repair of ruptured AAA, SMA/coeliac embolectomy, and limb embolectomy (p < 0.05). Surgeons who completed >6 months of vascular surgery training were more comfortable with SMA/coeliac embolectomy (49% vs. 17%, p = 0.01) and limb embolectomy (59% vs. 28%, p = 0.02). Confidence in performing limb amputation was similar across surgeon demographics and training (p > 0.05). CONCLUSION: Recently graduated rural general surgeons do not feel confident in managing vascular emergencies. Additional vascular surgery training should be considered as part of general surgical training and rural general surgical fellowships.


Assuntos
Fístula , Cirurgiões , Humanos , Emergências , Austrália , Procedimentos Cirúrgicos Vasculares/educação , Procedimentos Cirúrgicos Vasculares/métodos
4.
J Surg Oncol ; 124(1): 33-40, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33831232

RESUMO

INTRODUCTION: Advances in the care of soft-tissue tumors, including imaging capabilities and adjuvant radiation therapy, have broadened the indications and opportunities to pursue surgical limb salvage. However, peripheral nerve involvement and femoral nerve resection can still result in devastating functional outcomes. Nerve transfers offer a versatile solution to restore nerve function following tumor resection. METHODS: Two cases were identified by retrospective review. Patient and disease characteristics were gathered. Preoperative and postoperative motor function were assessed using the Medical Research Council Muscle Scale. Patient-reported pain levels were assessed using the numeric rating scale. RESULTS: Nerve transfers from the obturator and sciatic nerve were employed to restore knee extension. Follow up for Case 1 was 24 months, 8 months for Case 2. In both patients, knee extension and stabilization of gait without bracing was restored. Patient also demonstrated 0/10 pain (an average improvement of 5 points) with decreased neuromodulator and pain medication use. CONCLUSION: Nerve transfers can restore function and provide pain control benefits and ideally are performed at the time of tumor extirpation. This collaboration between oncologic and nerve surgeons will ultimately result in improved functional recovery and patient outcomes.


Assuntos
Nervo Femoral/lesões , Lipossarcoma/cirurgia , Transferência de Nervo/métodos , Neurilemoma/cirurgia , Traumatismos dos Nervos Periféricos/cirurgia , Neoplasias de Tecidos Moles/cirurgia , Adulto , Idoso , Feminino , Humanos , Lipossarcoma/patologia , Masculino , Neurilemoma/patologia , Traumatismos dos Nervos Periféricos/etiologia , Traumatismos dos Nervos Periféricos/patologia , Estudos Retrospectivos , Neoplasias de Tecidos Moles/patologia
5.
J Hand Surg Am ; 46(9): 731-739.e5, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34148787

RESUMO

PURPOSE: Digit replantation can improve dexterity, functionality, patient satisfaction, and pain following amputation, but rates continue to fall nationally. This study aimed to describe the effects of travel time and distance as barriers to high-volume hospitals, identify geospatial inefficiencies in the presentation of patients to replantation care, and provide an optimal allocation model in which cases are redistributed to select centers to reduce geospatial redundancies and optimize outcomes. METHODS: We reviewed the California Office of Statewide Health Planning and Development hospital discharge database to identify cases of digital amputation and determine outcomes of replantation. Using residential zip codes, risk- and reliability-adjusted multivariable logistic regression was used to assess the relationship of hospital volume and travel time on replantation success. Geospatial analysis assessed the travel burden of patients as they presented for care, and optimal allocation modeling was used to create a model of centralization. RESULTS: We identified 5,503 patients during the study period; 1,060 underwent replantation with an overall success rate of 70.2%. Ninety-three hospitals were found to perform replantations, of which only 4 were identified as high-volume hospitals. Patients routinely traveled farther to reach high-volume hospitals, and decreasing the travel time predicted a 15% increase in odds of replantation at a low-volume center. Twenty-one percent of patients presented to a low-volume hospital when a high-volume hospital was closer, and differencein payer type and race/ethnicity existed between those who presented to the closest center compared to those who bypassed high-volume centers. The optimal allocation modeling allocated all cases into 8 centers, which increased the median annual volume from 1 case to 9.6 cases and decreased patient travel time. CONCLUSIONS: Travel burden and geospatial inefficiencies serve as barriers to high-quality and high-volume replantation services. Optimized allocation of digital replantation cases into high-quality centers can decrease travel times, increase annual volumes, and potentially improve replantation outcomes. TYPE OF STUDY/LEVEL OF EVIDENCE: Economic/Decision Analysis III.


Assuntos
Amputação Traumática , Traumatismos dos Dedos , Amputação Cirúrgica , Amputação Traumática/cirurgia , Humanos , Reimplante , Reprodutibilidade dos Testes , Estudos Retrospectivos , Estados Unidos
6.
J Hand Surg Am ; 46(1): 72.e1-72.e10, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33268236

RESUMO

PURPOSE: Targeted muscle reinnervation (TMR) is a technique for the management of peripheral nerves in amputation. Phantom limb pain (PLP) and residual limb pain (RLP) trouble many patients after amputation, and TMR has been shown to reduce this pain when performed after the initial amputation. We hypothesize that TMR at the time of amputation may improve pain for patients after major upper-extremity amputation. METHODS: We conducted a retrospective review of patients who underwent major upper-extremity amputation with TMR performed at the time of the index amputation (early TMR). Phantom limb pain and RLP intensity and associated symptoms were assessed using the numeric rating scale (NRS), the Patient-Reported Outcome Measurement Information System (PROMIS) Pain Intensity Short-Form 3a, the Pain Behavior Short-Form 7a, and the Pain Interference Short-Form 8a. The TMR cohort was compared with benchmarked data from a sample of upper-extremity amputees. RESULTS: Sixteen patients underwent early TMR and were compared with 55 benchmark patients. More than half of early TMR patients were without PLP (62%) compared with 24% of controls. Furthermore, half of all patients were free of RLP compared with 36% of controls. The median PROMIS PLP intensity score for the general sample was 47 versus 38 in the early TMR sample. Patients who underwent early TMR reported reduced pain behaviors and interference specific to PLP (50 vs 53 and 41 vs 50, respectively). The PROMIS RLP intensity score was lower in patients with early TMR (36 vs 47). CONCLUSIONS: This study demonstrates that early TMR is a promising strategy for treating pain and improving the quality of life in the upper-extremity amputee. Early TMR may preclude the need for additional surgery and represents an important technique for peripheral nerve surgery. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.


Assuntos
Membro Fantasma , Qualidade de Vida , Amputação Cirúrgica , Humanos , Músculo Esquelético , Estudos Retrospectivos
7.
Microsurgery ; 41(1): 70-74, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32339351

RESUMO

Reconstruction following total vulvectomy is a reconstructive challenge. Previously described techniques typically require bilateral flaps and the associated donor site morbidity. We present a case of reconstruction after radical total vulvectomy using a single split anterolateral thigh (ALT) perforator flap with a design that optimizes perfusion while allowing for primary donor site closure. A 68-year-old female with a history of vulvar squamous cell carcinoma who had previously undergone vulvectomy and radiation therapy presented with local recurrence. The patient required a radical total vulvectomy, resulting in a 12 × 10 cm vulvar defect. A 2-perforator ALT flap (25 × 7 cm) was harvested, split transversely, and then inset in a circumferential manner around the vulva. This approach contrasts with previous reports, which split the ALT flap longitudinally or centrally, and can compromise perfusion and/or preclude primary donor site closure. The patient healed without complication with 6 months of follow-up. The described approach allows for total vulvectomy reconstruction using a single ALT flap with a perforator configuration that maximizes perfusion while obviating the need for donor site grafting.


Assuntos
Retalho Perfurante , Procedimentos de Cirurgia Plástica , Idoso , Feminino , Humanos , Recidiva Local de Neoplasia , Transplante de Pele , Coxa da Perna/cirurgia , Vulva/cirurgia , Vulvectomia
8.
Ann Plast Surg ; 84(5): 608-610, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31663938

RESUMO

Postmastectomy pain syndrome (PMPS) is defined as chronic pain after breast cancer surgery lasting greater than 3 months and has been shown to affect up to 60% of breast cancer patients. Substantial research has been performed to identify risk factors and potential treatment options, although the exact cause of PMPS remains elusive. As breast reconstruction becomes increasingly popular, plastic surgeons are likely to encounter more patients presenting with PMPS. This article summarizes current evidence on risk factors and treatment options for PMPS and highlights further areas of study.


Assuntos
Neoplasias da Mama , Dor Crônica , Mamoplastia , Cirurgiões , Neoplasias da Mama/cirurgia , Humanos , Mastectomia , Dor Pós-Operatória/diagnóstico , Dor Pós-Operatória/etiologia
9.
Adv Exp Med Biol ; 1164: 109-118, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31576544

RESUMO

Choosing an appropriate cell model(s) is the first decision to be made before starting a new project or programme of study. Here, we address the rationale that can be behind this decision and we summarize the current cell models that are used to study prostate cancer. Researchers face the challenge of choosing a model that recapitulates the complexity and heterogeneity of prostate cancer. The use of primary prostate epithelial cells cultured from patient tissue is discussed, and the necessity for close clinical-academic collaboration in order to do this is highlighted. Finally, a novel quantitative phase imaging technique is described, along with the potential for cell characterization to not only include gene expression and protein markers but also morphological features, cell behaviour and kinetic activity.


Assuntos
Linhagem Celular Tumoral , Células Epiteliais , Neoplasias da Próstata , Linhagem Celular , Células Epiteliais/citologia , Humanos , Masculino
10.
Microsurgery ; 39(5): 428-433, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30508296

RESUMO

BACKGROUND: Reconstruction of complex back defects, especially after corrective spine surgery, is a challenging problem. In these patients hardware issues predominate and flap failure has serious consequences. Certain subunits of the back pose even greater problems, specifically the central region between T9 and T12. The purpose of this article is to present a novel technique for reconstruction of such spinal defects using a newly described trapezius muscle propeller flap based on the dorsal scapular vessels. METHODS: Four cadaveric trapezius muscle propeller flaps were raised to ensure appropriate rotation into central region of the posterior trunk between T9 and T12. Three patients all had similar presentations with a history of scoliosis, previous failed spinal instrumentation, prominent hardware, impending exposure, worsening kyphosis, and back pain. The patients underwent planned extension fusions from the upper thoracic to lumbar vertebrae by orthopedic surgery. All three patients lacked local reconstructive options and propeller trapezius muscle flaps were dissected. RESULTS: All cadaveric dissections demonstrated adequate rotation of the muscle flap without tension or kinking of the vascular pedicle. For the case studies, two patients had right sided trapezius flaps utilized, one patient had injury to the right dorsal scapular vessels during dissection, thus a left sided trapezius was rotated. One patient had complications including a seroma requiring aspiration and superficial wound breakdown. All had complete healing with no postoperative shoulder dysfunction noted. CONCLUSION: As a result, the trapezius muscle propeller flap is found to be a novel flap that provides a simple, yet robust solution to an otherwise difficult reconstructive problem.


Assuntos
Retalho Perfurante/transplante , Procedimentos de Cirurgia Plástica/métodos , Músculos Superficiais do Dorso/transplante , Infecção da Ferida Cirúrgica/cirurgia , Cicatrização/fisiologia , Adulto , Cadáver , Dissecação , Feminino , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Retalho Perfurante/irrigação sanguínea , Prognóstico , Medição de Risco , Estudos de Amostragem , Fusão Vertebral/efeitos adversos , Fusão Vertebral/métodos , Músculos Superficiais do Dorso/irrigação sanguínea , Infecção da Ferida Cirúrgica/diagnóstico , Tronco/cirurgia , Resultado do Tratamento
11.
Ann Plast Surg ; 79(2): 162-165, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28509697

RESUMO

Oropharyngeal stenosis (OPS) is a rare postoperative complication of adenotonsillectomy that can be a source of considerable patient distress and morbidity. Circumferential scarring of the soft palate and tonsillar pillars leads to narrowing of the oropharyngeal aperture. This case report describes the novel use of bilateral buccal myomucosal flaps for the repair of postoperative OPS in a 20-year-old woman presenting with dysphagia, odynophagia, dyspnea, and intermittent hypernasal speech. Postoperatively, the patient noted immediate improvement of her symptoms. At 1-month follow-up, she noted complete resolution of her symptoms with no dysphagia, nasal regurgitation, speaking difficulty, dyspnea, or gagging. The buccal flaps were well healed and completely intact, maintaining appropriate height of the tonsillar pillars. The buccal myomucosal flap is an effective tool for numerous palatal and oropharyngeal abnormalities and, as described in this case study, is a reliable, safe, and effective technique that can be considered for the reconstruction of postsurgical OPS.


Assuntos
Bochecha/cirurgia , Mucosa Bucal/cirurgia , Orofaringe/cirurgia , Doenças Faríngeas/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Complicações Pós-Operatórias/cirurgia , Retalhos Cirúrgicos , Adenoidectomia , Constrição Patológica/etiologia , Constrição Patológica/cirurgia , Feminino , Humanos , Doenças Faríngeas/etiologia , Tonsilectomia , Adulto Jovem
12.
Biochem J ; 469(2): 177-87, 2015 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-25940306

RESUMO

Aspirin, the pro-drug of salicylate, is associated with reduced incidence of death from cancers of the colon, lung and prostate and is commonly prescribed in combination with metformin in individuals with type 2 diabetes. Salicylate activates the AMP-activated protein kinase (AMPK) by binding at the A-769662 drug binding site on the AMPK ß1-subunit, a mechanism that is distinct from metformin which disrupts the adenylate charge of the cell. A hallmark of many cancers is high rates of fatty acid synthesis and AMPK inhibits this pathway through phosphorylation of acetyl-CoA carboxylase (ACC). It is currently unknown whether targeting the AMPK-ACC-lipogenic pathway using salicylate and/or metformin may be effective for inhibiting cancer cell survival. Salicylate suppresses clonogenic survival of prostate and lung cancer cells at therapeutic concentrations achievable following the ingestion of aspirin (<1.0 mM); effects not observed in prostate (PNT1A) and lung (MRC-5) epithelial cell lines. Salicylate concentrations of 1 mM increased the phosphorylation of ACC and suppressed de novo lipogenesis and these effects were enhanced with the addition of clinical concentrations of metformin (100 µM) and eliminated in mouse embryonic fibroblasts (MEFs) deficient in AMPK ß1. Supplementation of media with fatty acids and/or cholesterol reverses the suppressive effects of salicylate and metformin on cell survival indicating the inhibition of de novo lipogenesis is probably important. Pre-clinical studies evaluating the use of salicylate based drugs alone and in combination with metformin to inhibit de novo lipogenesis and the survival of prostate and lung cancers are warranted.


Assuntos
Proteínas Quinases Ativadas por AMP/metabolismo , Anti-Inflamatórios não Esteroides/farmacologia , Hipoglicemiantes/farmacologia , Neoplasias Pulmonares/tratamento farmacológico , Metformina/farmacologia , Proteínas de Neoplasias/metabolismo , Neoplasias da Próstata/tratamento farmacológico , Salicilato de Sódio/farmacologia , Proteínas Quinases Ativadas por AMP/genética , Acetil-CoA Carboxilase/genética , Acetil-CoA Carboxilase/metabolismo , Animais , Anti-Inflamatórios não Esteroides/agonistas , Sítios de Ligação , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/genética , Sinergismo Farmacológico , Embrião de Mamíferos/enzimologia , Embrião de Mamíferos/patologia , Ativação Enzimática/efeitos dos fármacos , Ativação Enzimática/genética , Feminino , Fibroblastos/enzimologia , Fibroblastos/patologia , Humanos , Hipoglicemiantes/agonistas , Lipogênese , Neoplasias Pulmonares/enzimologia , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patologia , Masculino , Metformina/agonistas , Camundongos , Camundongos Knockout , Proteínas de Neoplasias/genética , Neoplasias da Próstata/enzimologia , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia , Salicilato de Sódio/agonistas
13.
Ann Occup Hyg ; 60(3): 334-47, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26608952

RESUMO

High and low flow rate respirable size selective samplers including the CIP10-R (10 l min(-1)), FSP10 (11.2 l min(-1)), GK2.69 (4.4 l min(-1)), 10-mm nylon (1.7 l min(-1)), and Higgins-Dewell type (2.2 l min(-1)) were compared via side-by-side sampling in workplaces for respirable crystalline silica measurement. Sampling was conducted at eight different occupational sites in the USA and five different stonemasonry sites in Ireland. A total of 536 (268 pairs) personal samples and 55 area samples were collected. Gravimetric analysis was used to determine respirable dust mass and X-ray diffraction analysis was used to determine quartz mass. Ratios of respirable dust mass concentration, quartz mass concentration, respirable dust mass, and quartz mass from high and low flow rate samplers were compared. In general, samplers did not show significant differences greater than 30% in respirable dust mass concentration and quartz mass concentration when outliers (ratio <0.3 or >3.0) were removed from the analysis. The frequency of samples above the limit of detection and limit of quantification of quartz was significantly higher for the CIP10-R and FSP10 samplers compared to low flow rate samplers, while the GK2.69 cyclone did not show significant difference from low flow rate samplers. High flow rate samplers collected significantly more respirable dust and quartz than low flow rate samplers as expected indicating that utilizing high flow rate samplers might improve precision in quartz measurement. Although the samplers did not show significant differences in respirable dust and quartz concentrations, other practical attributes might make them more or less suitable for personal sampling.


Assuntos
Monitoramento Ambiental/instrumentação , Exposição por Inalação/análise , Exposição Ocupacional/análise , Quartzo/análise , Poluentes Ocupacionais do Ar/análise , Poeira/análise , Monitoramento Ambiental/estatística & dados numéricos , Filtração , Humanos , Irlanda , Tamanho da Partícula , Estados Unidos , Local de Trabalho
14.
Eur Spine J ; 25(3): 801-6, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26063055

RESUMO

PURPOSE: There are very few reported cases of compartment syndrome of the leg following spinal surgery via a posterior approach. An association between compartment syndrome and muscle over-activity via nerve stimulation during evoked potential monitoring was first suggested in 2003. No further reports have suggested this link. We present a multicentre retrospective review of a series of five patients who developed compartment syndrome of the leg following spinal surgery via a posterior approach, whilst un-paralysed and with combined sensory (SSEP)/motor evoked potential (MEP) monitoring with an aim of highlighting this possible causative factor. METHODS: All data were collected contemporaneously and retrospective analysis was performed. We then arranged for a multidisciplinary review of the cases including surgeons, anaesthetists, radiologists, neurophysiologists and theatre and ward nursing staff. Finally, the literature was reviewed. RESULTS: All patients were operated on by three different surgeons, on different operating tables/mattresses in the prone position. The common factors were un-paralysed patients having motor/sensory monitoring, mechanical calf pumps and total intravenous anaesthesia. Three patients underwent surgical decompression of their compartments and two were treated expectantly. Three patients had confirmed intra-compartmental changes on MRI consistent with compartment syndrome and one had intra-compartmental pressure monitoring which confirmed the diagnosis. CONCLUSIONS: Previous cases in the literature have related to mal-positioning on the Jackson table or use of the knee-chest position for surgery. This was not the case for our patients; therefore, we suspect an association between overactive muscle stimulation and muscle necrosis. Further experimental studies investigating this link are required.


Assuntos
Síndromes Compartimentais/etiologia , Monitorização Intraoperatória/efeitos adversos , Coluna Vertebral/cirurgia , Adolescente , Anestesia Geral , Condrossarcoma/cirurgia , Potencial Evocado Motor/fisiologia , Potenciais Somatossensoriais Evocados/fisiologia , Feminino , Humanos , Perna (Membro) , Masculino , Pessoa de Meia-Idade , Monitorização Intraoperatória/métodos , Músculo Esquelético/patologia , Necrose , Procedimentos Neurocirúrgicos/efeitos adversos , Posicionamento do Paciente , Decúbito Ventral , Estudos Retrospectivos , Escoliose/cirurgia , Neoplasias da Coluna Vertebral/cirurgia , Adulto Jovem
15.
J Med Imaging Radiat Oncol ; 68(2): 194-207, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38093615

RESUMO

Artificial intelligence is a rapidly evolving area of technology whose integration into healthcare delivery infrastructure is predicted to have profound implications for medicine delivery in the 21st century. Artificial intelligence as it relates to healthcare is a term used to cover a wide scope of computer-based algorithms whose application varies from patient selection to enhancements in imaging and postoperative prognostication. This article reviews the literature to contextualise how AI is currently being implemented in interventional radiology. This review considers the literature from a preoperative, intraoperative and postoperative perspective.


Assuntos
Inteligência Artificial , Radiologia Intervencionista , Humanos , Algoritmos , Diagnóstico por Imagem , Tecnologia
16.
Plast Reconstr Surg ; 153(3): 754-765, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-37199413

RESUMO

BACKGROUND: Medical training is known to impose financial burden on trainees, which has been shown to contribute to burnout, even possibly compromising patient care. Financial literacy allows for management of financial situations affecting professional and personal life. The authors aimed to evaluate the financial status and knowledge among plastic surgery residents. METHODS: A survey regarding finances and financial literacy of plastic surgery residents was sent to all the current accredited U.S. residency programs. The same survey was distributed internally. A descriptive analysis was performed, and multiple Fisher exact tests and a t test evaluated comparisons. RESULTS: Eighty-six residents were included. Most trainees had a student loan (59.3%), with 22.1% having loans more than $300,000. A majority had at least one personal loan debt other than educational (51.1%). Residents with more debt were significantly less likely to pay off their balances monthly. A total of 17.4% of trainees had no plan for how to invest their retirement savings, whereas 55.8% reported not knowing how much they need to save to retire. One in five trainees did not feel prepared to manage personal finances/retirement planning after graduation, a majority had no formal personal finance education in their curriculum, and 89.5% agreed that financial literacy education would be beneficial. Our institutional data largely mirrored national data. CONCLUSIONS: Many residents are lacking in financial knowledge, despite most having significant debt. Additional financial literacy education is needed in plastic surgery training. Curricula development at an institutional or national society level are possible paths toward a coordinated response to this need.


Assuntos
Internato e Residência , Cirurgia Plástica , Humanos , Alfabetização , Renda , Apoio ao Desenvolvimento de Recursos Humanos , Inquéritos e Questionários
17.
Plast Reconstr Surg ; 153(1): 154-163, 2024 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-37199690

RESUMO

BACKGROUND: Targeted muscle reinnervation (TMR) is an effective technique for the prevention and management of phantom limb pain (PLP) and residual limb pain (RLP) among amputees. The purpose of this study was to evaluate symptomatic neuroma recurrence and neuropathic pain outcomes between cohorts undergoing TMR at the time of amputation (ie, acute) versus TMR following symptomatic neuroma formation (ie, delayed). METHODS: A cross-sectional, retrospective chart review was conducted using patients undergoing TMR between 2015 and 2020. Symptomatic neuroma recurrence and surgical complications were collected. A subanalysis was conducted for patients who completed Patient-Reported Outcome Measurement Information System (PROMIS) pain intensity, interference, and behavior scales and an 11-point numeric rating scale (NRS) form. RESULTS: A total of 105 limbs from 103 patients were identified, with 73 acute TMR limbs and 32 delayed TMR limbs. Nineteen percent of the delayed TMR group had symptomatic neuromas recur in the distribution of original TMR compared with 1% of the acute TMR group ( P < 0.05). Pain surveys were completed at final follow-up by 85% of patients in the acute TMR group and 69% of patients in the delayed TMR group. Of this subanalysis, acute TMR patients reported significantly lower PLP PROMIS pain interference ( P < 0.05), RLP PROMIS pain intensity ( P < 0.05), and RLP PROMIS pain interference ( P < 0.05) scores in comparison to the delayed group. CONCLUSIONS: Patients who underwent acute TMR reported improved pain scores and a decreased rate of neuroma formation compared with TMR performed in a delayed fashion. These results highlight the promising role of TMR in the prevention of neuropathic pain and neuroma formation at the time of amputation. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.


Assuntos
Transferência de Nervo , Neuralgia , Neuroma , Membro Fantasma , Humanos , Estudos Retrospectivos , Estudos Transversais , Transferência de Nervo/métodos , Amputação Cirúrgica , Membro Fantasma/etiologia , Membro Fantasma/prevenção & controle , Membro Fantasma/cirurgia , Neuroma/etiologia , Neuroma/prevenção & controle , Neuroma/cirurgia , Neuralgia/etiologia , Neuralgia/prevenção & controle , Neuralgia/cirurgia , Músculos , Músculo Esquelético/cirurgia , Cotos de Amputação/cirurgia
18.
ChemMedChem ; 19(18): e202400391, 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-38830117

RESUMO

Concentration-dependent increases in relaxivity (r1) were found to be induced by self-assembly when Fmoc is adjacent to tryptophan in peptide-based MRI contrast agents featuring Gd-DOTA. A series of di- and tri-peptides were synthesized to test the effect of ionic strength, N-terminal substituent, peptide length, net charge, and relative location of Fmoc and tryptophan on r1 and critical aggregation concentration (CAC) at 1.0 Tesla. Compared to nominal r1 values of 3.5-7.4 mM-1 s-1 per Gd(III), r1 values increased dramatically to 13.2-16.9 mM-1 s-1 per Gd(III) upon self-assembly, with CACs between 0.22 and 2.59 mM when tested in H2O or PBS. When tested in fetal bovine serum (FBS), the compounds maintained high r1 values of 11.2-13.0 mM-1 s-1, but had dramatically lower CAC values below 25 µM. These findings guided the synthesis of two targeted, high-relaxivity MRI contrast agents that contained PSMA-binding ligand, DCL. Their r1 values in H2O or PBS increased from 5.9-7.4 mM-1 s-1 to 13.5-14.8 mM-1 s-1 with CAC values of 1.65-2.70 mM. In FBS, their r1 values were found to be 11.2-11.9 mM-1 s-1, with CAC values below 25 µM. By the conjugation of targeting agents in the last step of synthesis, a broadly applicable route to targeted, high-relaxivity MRI contrast agents is offered.


Assuntos
Meios de Contraste , Imageamento por Ressonância Magnética , Peptídeos , Meios de Contraste/química , Meios de Contraste/síntese química , Peptídeos/química , Peptídeos/síntese química , Peptídeos/farmacologia , Compostos Organometálicos/química , Compostos Organometálicos/síntese química , Compostos Organometálicos/farmacologia , Humanos , Compostos Heterocíclicos
19.
Front Immunol ; 15: 1288187, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38361924

RESUMO

This study aimed to comprehensively analyze inflammatory and autoimmune characteristics of patients with sickle cell disease (SCD) at a steady-state condition (StSt) compared to healthy controls (HCs) to explore the pathogenesis of StSt and its impact on patients' well-being. The study cohort consisted of 40 StSt participants and 23 HCs enrolled between July 2021 and April 2023. StSt participants showed elevated white blood cell (WBC) counts and altered hematological measurements when compared to HCs. A multiplex immunoassay was used to profile 80 inflammatory cytokines/chemokines/growth factors in plasma samples from these SCD participants and HCs. Significantly higher plasma levels of 35 analytes were observed in SCD participants, with HGF, IL-18, IP-10, and MCP-2 being among the most significantly affected analytes. Additionally, autoantibody profiles were also altered, with elevated levels of anti-SSA/Ro60, anti-Ribosomal P, anti-Myeloperoxidase (MPO), and anti-PM/Scl-100 observed in SCD participants. Flow cytometric analysis revealed higher rates of red blood cell (RBC)/reticulocyte-leukocyte aggregation in SCD participants, predominantly involving monocytes. Notably, correlation analysis identified associations between inflammatory mediator levels, autoantibodies, RBC/reticulocyte-leukocyte aggregation, clinical lab test results, and pain crisis/sensitivity, shedding light on the intricate interactions between these factors. The findings underscore the potential significance of specific biomarkers and therapeutic targets that may hold promise for future investigations and clinical interventions tailored to the unique challenges posed by SCD. In addition, the correlations between vaso-occlusive crisis (VOC)/pain/sensory sensitivity and inflammation/immune dysregulation offer valuable insights into the pathogenesis of SCD and may lead to more targeted and effective therapeutic strategies. Clinical Trial Registration: ClinicalTrials.gov, Identifier: NCT05045820.


Assuntos
Anemia Falciforme , Autoimunidade , Humanos , Dor/etiologia , Citocinas , Inflamação , Autoanticorpos/uso terapêutico
20.
Sci Rep ; 14(1): 7315, 2024 03 27.
Artigo em Inglês | MEDLINE | ID: mdl-38538687

RESUMO

Sickle cell disease (SCD) is a genetic disorder causing painful and unpredictable Vaso-occlusive crises (VOCs) through blood vessel blockages. In this study, we propose explosive synchronization (ES) as a novel approach to comprehend the hypersensitivity and occurrence of VOCs in the SCD brain network. We hypothesized that the accumulated disruptions in the brain network induced by SCD might lead to strengthened ES and hypersensitivity. We explored ES's relationship with patient reported outcome measures (PROMs) as well as VOCs by analyzing EEG data from 25 SCD patients and 18 matched controls. SCD patients exhibited lower alpha frequency than controls. SCD patients showed correlation between frequency disassortativity (FDA), an ES condition, and three important PROMs. Furthermore, stronger FDA was observed in SCD patients with a higher frequency of VOCs and EEG recording near VOC. We also conducted computational modeling on SCD brain network to study FDA's role in network sensitivity. Our model demonstrated that a stronger FDA could be linked to increased sensitivity and frequency of VOCs. This study establishes connections between SCD pain and the universal network mechanism, ES, offering a strong theoretical foundation. This understanding will aid predicting VOCs and refining pain management for SCD patients.


Assuntos
Anemia Falciforme , Dor , Humanos , Dor/etiologia , Anemia Falciforme/complicações , Manejo da Dor/efeitos adversos , Encéfalo
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