RESUMEN
PURPOSE OF REVIEW: Surgical flow disruptions (SFD) are deviations from the progression of a procedure which can be potentially compromising to the safety of the patient. Investigators have previously demonstrated that SFDs can increase the likelihood of error. To date, there has been no investigation into flow disruptions through the eyes of clinicians in the operating room. This study, therefore, attempted to better understand SFDs and their impact from the perspective of operating room team members. RECENT FINDINGS: After Institutional Review Board approval, a survey was sent to operating room team members including surgeons, anesthesia providers, nurses, and surgical technologists. The survey was developed to assess the perceived frequency and consequences of SFDs, and the ability to report and perceive the efficacy of reporting to management. Among 111 survey participants, 65% reported that surgical flow disruptions happen either "several times a day" or "every procedure." Forty percent ranked poor communication as the most frequent cause of SFDs. Ten percent reported equipment failure was the most frequent cause of SFDs. Respondents who identified as attending surgeons felt impacts on patient safety and staff burnout was the most likely consequence of SFDs. Scrub technicians and nurses felt that economic consequences were the most likely result. Forty-four percent did not feel reporting led to effective change. Thirty-five percent did not believe they could report issues without adverse consequences. Flow disruptions represent patterns or accumulations of disruptions which may highlight weak points in surgical systems and potential causes of staff burnout and medical error. The data in the present investigation demonstrate that OR team members recognize surgical flow disruptions are an important issue and believe poor communication and equipment problems are a significant factor. Our data additionally suggest the groups surveyed do not feel safe or productive in reporting flow disruptions.
Asunto(s)
Errores Médicos/estadística & datos numéricos , Quirófanos , Grupo de Atención al Paciente/estadística & datos numéricos , Flujo de Trabajo , Humanos , Seguridad del Paciente/estadística & datos numéricos , Encuestas y CuestionariosRESUMEN
Statins reduce atherosclerotic events and cardiovascular mortality. Their side effects include memory loss, myopathy, cataract formation, and increased risk of diabetes. As cardiovascular mortality relates to plaque instability, which depends on the integrity of the fibrous cap, we hypothesize that the inhibition of the potential of mesenchymal stem cells (MSCs) to differentiate into macrophages would help to explain the long known, but less understood "non-lipid-associated" or pleiotropic benefit of statins on cardiovascular mortality. In the present investigation, MSCs were treated with atorvastatin or pravastatin at clinically relevant concentrations and their proliferation, differentiation potential, and gene expression profile were assessed. Both types of statins reduced the overall growth rate of MSCs. Especially, statins reduced the potential of MSCs to differentiate into macrophages while they exhibited no direct effect on macrophage function. These findings suggest that the limited capacity of MSCs to differentiate into macrophages could possibly result in decreased macrophage density within the arterial plaque, reduced inflammation, and subsequently enhance plaque stability. This would explain the non-lipid-associated reduction in cardiovascular events. On a negative side, statins impaired the osteogenic and chondrogenic differentiation potential of MSCs and increased cell senescence and apoptosis, as indicated by upregulation of p16, p53 and Caspase 3, 8, and 9. Statins also impaired the expression of DNA repair genes, including XRCC4, XRCC6, and Apex1. While the effect on macrophage differentiation explains the beneficial side of statins, their impact on other biologic properties of stem cells provides a novel explanation for their adverse clinical effects.
Asunto(s)
Inhibidores de Hidroximetilglutaril-CoA Reductasas/farmacología , Células Madre Mesenquimatosas/efectos de los fármacos , Células Madre Mesenquimatosas/fisiología , Tejido Adiposo/citología , Adulto , Anciano , Envejecimiento , Ciclo Celular , Células Cultivadas , Humanos , Inflamación , Persona de Mediana Edad , Adulto JovenRESUMEN
PURPOSE: The aim of this study was to evaluate the association between surgeon volume and patient outcomes among different race ethnicities undergoing thyroid or parathyroid surgery. METHODS: The nationwide inpatient sample was used to identify all thyroidectomy and parathyroidectomy admissions from 2003 to 2009, using International Classification of Diseases, 9th Clinical Modification (ICD-9-CM) procedure codes. Race, demographic, and clinical characteristics of patients were collected, along with surgeon volume, to predict the length of stay (LOS), complication rates, mortality, and total charges by racial group, using univariate and multivariate analyses. RESULTS: A total of 106,314 thyroid and parathyroid surgeries were included in the current analysis. Of these patients, 54 % were Caucasian, 11 % African American, 7 % Hispanic, and 3 % Asian. Mean LOS was longer for African American patients (4 ± 8.7 days) than for Caucasians (2.3 ± 5.5 days) [p < 0.001]. African Americans had higher overall complications (16.8 %) compared with Caucasians (11 %), Hispanics (13.5 %), and Asians (12 %) [p < 0.001]. In-hospital mortality was higher for African Americans (0.8 %) compared with that from other race groups (0.3 %) [p < 0.001]. Mean total charges were significantly higher for African Americans ($33,292 ± $67,387) compared with those for Caucasians ($22,855 ± $40,167) (p < 0.001). African Americans had less access to intermediate- (10-99 cases) and high- (>100 cases) volume surgeons compared with Caucasians-45 versus 49 %, and 16 versus 19 %, respectively (p < 0.001). Higher surgeon volume was associated with improved outcomes (p < 0.001). Racial disparity in all investigated outcomes was still significantly evident even after stratification by surgeon volume. CONCLUSION: Higher surgeon volume is associated with improved patient outcomes. However, our data suggests that the observed racial disparities in thyroid and parathyroid surgery go beyond access to quality healthcare providers.
Asunto(s)
Etnicidad/estadística & datos numéricos , Tiempo de Internación/estadística & datos numéricos , Neoplasias de las Paratiroides/etnología , Paratiroidectomía/efectos adversos , Complicaciones Posoperatorias/etiología , Especialidades Quirúrgicas/normas , Neoplasias de la Tiroides/etnología , Tiroidectomía/efectos adversos , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Estudios de Seguimiento , Hospitales de Alto Volumen , Hospitales de Bajo Volumen , Humanos , Masculino , Persona de Mediana Edad , Neoplasias de las Paratiroides/mortalidad , Neoplasias de las Paratiroides/cirugía , Pronóstico , Calidad de la Atención de Salud , Estudios Retrospectivos , Tasa de Supervivencia , Neoplasias de la Tiroides/mortalidad , Neoplasias de la Tiroides/cirugíaRESUMEN
OBJECTIVE: The purpose of this study was to develop and test a simulation method of conducting investigation of the causality of adverse surgical outcomes. DESIGN: Six hundred and thirty-one closed claims of a major medical malpractice insurance company were reviewed. Each case had undergone conventional root cause analysis (RCA). Claims were categorized by comparing the predominant underlying cause documented in the case files. Three cases were selected for simulation. SETTING: All records (medical and legal) were analyzed. Simulation scenarios were developed by abstracting data from the records and then developing paper and electronic medical records, choosing appropriate STUDY PARTICIPANTS: including test subjects and confederates, scripting the simulation and choosing the appropriate simulated environment. INTERVENTION: In a simulation center, each case simulation was run 6-7 times and recorded, with participants debriefed at the conclusion. MAIN OUTCOME MEASURES: Sources of error identified during simulation were compared with those noted in the closed claims. Test subject decision-making was assessed qualitatively. RESULTS: Simulation of adverse outcomes (SAOs) identified more system errors and revealed the way complex decisions were made by test subjects. Compared with conventional RCA, SAO identified root causes less focused on errors by individuals and more on systems-based error. CONCLUSIONS: The use of simulation for investigation of adverse surgical outcomes is feasible and identifies causes that may be more amenable to effective systems changes than conventional RCA. The information that SAO provides may facilitate the implementation of corrective measures, decreasing the risk of recurrence and improving patient safety.
Asunto(s)
Errores Médicos/clasificación , Simulación de Paciente , Complicaciones Posoperatorias/clasificación , Análisis de Causa Raíz/métodos , Administración de la Seguridad/métodos , Humanos , Revisión de Utilización de Seguros , Evaluación de Procesos y Resultados en Atención de SaludRESUMEN
BACKGROUND: Although a wide spectrum of inhibitors of the MEK/ERK and PI3K/AKT pathways have been discovered and entered clinical trials, the effects of their individual use in thyroid cancer were often disappointing. We hypothesized that dual targeting of these two pathways would be a safe and effective strategy against aggressive thyroid cancers. METHODS: We examined the antiproliferative effects of the MEK/ERK inhibitor AZD6244 and the PI3K/AKT inhibitor GDC0941, individually or in combination, on thyroid cancer cells harboring both the BRAF(V600E) and PIK3CA mutations. The effects of drug exposure on both total and phosphorylated (p-) forms of AKT and ERK were monitored by Western blotting analysis. Effects of these inhibitors on cell-cycle progression and apoptosis were measured by flow cytometry and DNA-fragmentation analyses, respectively. RESULTS: We observed significant toxicities to viability of cells with low concentrations of AZD6244 or GDC0941, which were synergistic when the two inhibitors were used in combination (P < 0.01). AZD6244 abrogated p-ERK and GDC0941 abrogated p-AKT levels, confirming their expected target effects. Unexpectedly, monotherapy with AZD6244 resulted in activation of the PI3K signaling pathway in some cancer cell lines and co-exposure to AZD6244 and GDC0941 was necessary to suppress both pathways. Flow cytometry showed G1 arrest. DNA fragmentation analysis showed an increased apoptosis of cells dually treated with the two inhibitors. CONCLUSION: Concomitant suppression of MEK/ERK and PI3K/AKT pathways by AZD6244 and GDC0941 abrogates compensatory mechanisms of tumor survival and causes synergistic cytotoxicity in thyroid cancer cells.
Asunto(s)
Bencimidazoles/uso terapéutico , Carcinoma/tratamiento farmacológico , Indazoles/uso terapéutico , Quinasas de Proteína Quinasa Activadas por Mitógenos/antagonistas & inhibidores , Inhibidores de las Quinasa Fosfoinosítidos-3 , Proteínas Proto-Oncogénicas c-akt/antagonistas & inhibidores , Transducción de Señal/efectos de los fármacos , Sulfonamidas/uso terapéutico , Neoplasias de la Tiroides/tratamiento farmacológico , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Apoptosis/efectos de los fármacos , Apoptosis/fisiología , Bencimidazoles/farmacología , Carcinoma/patología , Carcinoma/fisiopatología , Carcinoma Papilar , Ciclo Celular/efectos de los fármacos , Ciclo Celular/fisiología , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Supervivencia Celular/fisiología , Relación Dosis-Respuesta a Droga , Sinergismo Farmacológico , Humanos , Indazoles/farmacología , Quinasas de Proteína Quinasa Activadas por Mitógenos/efectos de los fármacos , Quinasas de Proteína Quinasa Activadas por Mitógenos/fisiología , Fosfatidilinositol 3-Quinasas/efectos de los fármacos , Fosfatidilinositol 3-Quinasas/fisiología , Proteínas Proto-Oncogénicas c-akt/efectos de los fármacos , Proteínas Proto-Oncogénicas c-akt/fisiología , Transducción de Señal/fisiología , Sulfonamidas/farmacología , Cáncer Papilar Tiroideo , Neoplasias de la Tiroides/patología , Neoplasias de la Tiroides/fisiopatologíaRESUMEN
Transplanting single pediatric donor kidneys into adult recipients has an increased risk of hyperfiltration injury and graft loss. It is unknown if renin-angiotensin system (RAS) blockers are beneficial in this setting. We retrospectively analyzed 94 adults who received single kidneys from donors <10 years old during 1996-2009. The recipients were divided into group 1 with RAS blockers (n = 40) and group 2 without RAS blockers (n = 54) in the first year of transplant. There was no significant difference in any donor/recipient demographic between the two groups. Graft function, incidence of delayed graft function, acute rejection, and persistent proteinuria were not statistically different either. Kaplan-Meier estimated death-censored graft survivals were significantly better in group 1 than in group 2: 95 vs. 81.2%, 82.4 vs. 61.2%, 72.6 vs. 58.5%, and 68.5 vs. 47.2% at 1, 3, 5, and 7 years, respectively (log rank P = 0.043). Multivariable analysis found persistent proteinuria was a risk factor for graft loss (OR 2.70, 95% CI 1.33-5.49, P = 0.006), while RAS blockers reduced the risk of graft loss (OR 0.38, 95% CI 0.18-0.79, P = 0.009). Early RAS blockade therapy in the first year of transplant is associated with superior long-term graft survival among adults transplanted with single pediatric donor kidneys.
Asunto(s)
Antagonistas de Receptores de Angiotensina/uso terapéutico , Inhibidores de la Enzima Convertidora de Angiotensina/uso terapéutico , Supervivencia de Injerto/fisiología , Trasplante de Riñón/métodos , Sistema Renina-Angiotensina/efectos de los fármacos , Adulto , Niño , Preescolar , Femenino , Supervivencia de Injerto/efectos de los fármacos , Humanos , Lactante , Estimación de Kaplan-Meier , Riñón/fisiología , Masculino , Persona de Mediana Edad , Proteinuria/prevención & control , Estudios Retrospectivos , Donantes de TejidosRESUMEN
BACKGROUND AND OBJECTIVE: Minimally invasive surgery for liver resection remains controversial. This study was designed to compare open versus laparoscopic surgical approaches to liver resection. METHODS: We performed a single-center retrospective chart review. RESULTS: We compared 45 laparoscopic liver resections with 17 open cases having equivalent resections based on anatomy and diagnosis. The overall complication rate was 25.8%. More open resection patients had complications (52.9% vs 15.5%, P < .008). The conversion rate was 11.1%. The mean blood loss was 667.1 ± 1450 mL in open cases versus 47.8 ± 89 mL in laparoscopic cases (P < .0001). Measures of intravenous narcotic use, intensive care unit length of stay, and hospital length of stay all favored the laparoscopic group. Patients were more likely to have complications or morbidity in the open resection group than in the laparoscopic group for both the anterolateral (P < .085) and posterosuperior (P < .002) resection subgroups. CONCLUSION: In this series comparing laparoscopic and open liver resections, there were fewer complications, more rapid recovery, and lower morbidity in the laparoscopic group, even for those resections involving the posterosuperior segments of the liver.
Asunto(s)
Hepatectomía/efectos adversos , Hepatectomía/métodos , Laparoscopía , Adulto , Anciano , Pérdida de Sangre Quirúrgica , Carcinoma Hepatocelular/cirugía , Femenino , Humanos , Tiempo de Internación , Neoplasias Hepáticas/cirugía , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
Hepatitis C virus (HCV) is a controversial indication for liver transplantation (LT) in human immunodeficiency virus (HIV)-infected patients because of reportedly poor outcomes. This prospective, multicenter US cohort study compared patient and graft survival for 89 HCV/HIV-coinfected patients and 2 control groups: 235 HCV-monoinfected LT controls and all US transplant recipients who were 65 years old or older. The 3-year patient and graft survival rates were 60% [95% confidence interval (CI) = 47%-71%] and 53% (95% CI = 40%-64%) for the HCV/HIV patients and 79% (95% CI = 72%-84%) and 74% (95% CI = 66%-79%) for the HCV-infected recipients (P < 0.001 for both), and HIV infection was the only factor significantly associated with reduced patient and graft survival. Among the HCV/HIV patients, older donor age [hazard ratio (HR) = 1.3 per decade], combined kidney-liver transplantation (HR = 3.8), an anti-HCV-positive donor (HR = 2.5), and a body mass index < 21 kg/m(2) (HR = 3.2) were independent predictors of graft loss. For the patients without the last 3 factors, the patient and graft survival rates were similar to those for US LT recipients. The 3-year incidence of treated acute rejection was 1.6-fold higher for the HCV/HIV patients versus the HCV patients (39% versus 24%, log rank P = 0.02), but the cumulative rates of severe HCV disease at 3 years were not significantly different (29% versus 23%, P = 0.21). In conclusion, patient and graft survival rates are lower for HCV/HIV-coinfected LT patients versus HCV-monoinfected LT patients. Importantly, the rates of treated acute rejection (but not the rates of HCV disease severity) are significantly higher for HCV/HIV-coinfected recipients versus HCV-infected recipients. Our results indicate that HCV per se is not a contraindication to LT in HIV patients, but recipient and donor selection and the management of acute rejection strongly influence outcomes.
Asunto(s)
Coinfección/mortalidad , Rechazo de Injerto/mortalidad , Supervivencia de Injerto , Infecciones por VIH/mortalidad , Hepatitis C Crónica/mortalidad , Trasplante de Hígado/mortalidad , Abdomen Agudo , Adulto , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Trasplante de Riñón/mortalidad , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/mortalidad , Estudios Prospectivos , Factores de Riesgo , Análisis de Supervivencia , Resultado del Tratamiento , Estados Unidos/epidemiologíaRESUMEN
Transplantation is the treatment of choice for patients with end-stage renal disease. Despite complete or partial restoration of renal function, many recipients after transplant continue to self-identify as disabled. It is a designation required for federal healthcare assistance pre-transplant, but in some cases, post-transplantation, the designation is misapplied. When kidney recipients bear the label of disabled, regardless if the disability is real or perceived, they are less likely to participate in work and social activities. Although transplantation improves quality of life, for many recipients the designation of disability can extend an unintended, negative impact. It is well recognized that kidney recipients return to employment, education, and social activities after transplantation. However, there is a portion of the recipient population that can work but chooses not to engage. A large part of the phenomenon is related to disability status and the federal financing of kidney disease. This paper summarizes the history of the relationship between disability and kidney transplantation, the potential pitfalls associated with the relationship, and evidence-based strategies designed to mitigate or lead to mitigation of the unfavorable effects associated with misappropriated, perceived disability after kidney transplantation.
Asunto(s)
Fallo Renal Crónico/psicología , Fallo Renal Crónico/cirugía , Trasplante de Riñón/psicología , Trasplante de Riñón/rehabilitación , Complicaciones Posoperatorias , Actividades Cotidianas , Anciano , Evaluación de la Discapacidad , Estado de Salud , Humanos , Pronóstico , Calidad de VidaRESUMEN
Human immunodeficiency virus (HIV) seropositivity has historically been an absolute contraindication for solid organ transplantation. However, the successful application of HAART (highly active anti-retroviral therapy) drug regimens has greatly prolonged the life expectancy of HIV-positive patients. Therefore, it has become appropriate to consider this patient population for transplantation. HIV positive transplants are being performed around the country in controlled settings, usually as part of a research protocol. The aim of our study is to describe the Louisiana experience with organ transplantation into HIV-positive patients. We identified seven HIV-positive patients who underwent kidney or kidney/pancreas transplantation at our center between 2007 and 2010. We performed a retrospective chart review to ascertain graft function, as well as virologic and immunologic status post-transplant. Renal function (glomerular filtration rate and serum creatinine concentrations) improved in all subjects post-transplant, and six of seven (85.8%) subjects remained virologically suppressed with no progression to Acquired Immunodeficiency Syndrome (AIDS). Overall, two-year graft and patient survival rates were 85.5%. HIV seropositive End Stage Renal Disease (ESRD) patients represent a new population of patients that can be successfully transplanted. This offers a new dimension in care for successful HAART therapy to prolong the life of HIV-infected patients.
Asunto(s)
Seropositividad para VIH , Trasplante de Órganos , Adulto , Recuento de Linfocito CD4 , Progresión de la Enfermedad , Femenino , Humanos , Terapia de Inmunosupresión/métodos , Louisiana , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Estudios Retrospectivos , Resultado del Tratamiento , Carga ViralRESUMEN
BACKGROUND: Process flow describes the efficiency and consistency with which a process functions. Disruptions in surgical flow have been shown to be associated with an increase in error. Despite this, little experience exists in using surgical flow analysis to guide quality improvement (QI). STUDY DESIGN: In a 900-bed teaching hospital with an annual surgical volume of 24,000 cases, a 4-month observational study of process flow was done by experts in complex system evaluation. Identified flow disruptions were used to guide QI. Statistical analysis included descriptive and bivariate techniques. RESULTS: More than 200 unique process data points were evaluated. There was a high degree of variability in completion of 79 individual intraoperative data elements. Lack of completion of all elements of the time out was associated with number of times the operating room door opened during case (19, 11-27; p = 0.01). Flow disruptions were used to direct surgical QI. One example was a disruption affecting the use of Sugammadex. Resolving this flow disruption resulted in a 59% reduction in the incidence of postoperative respiratory failure (p < 0.01) and a direct and variable cost savings of $447,200 and $313,160, respectively, in the first 12 months. CONCLUSIONS: The use of process flow analysis to direct surgical quality initiatives is a novel approach that emphasizes system-level strategy. Resolving flow disruptions can lead to effective QI that embraces reliability by focusing attention on common processes rather than adverse events that may be unique and therefore difficult to apply broadly.
Asunto(s)
Quirófanos , Mejoramiento de la Calidad , Centros Médicos Académicos , Humanos , Reproducibilidad de los ResultadosRESUMEN
The differences and efficacy of standard preservation solutions in kidney transplantation, University of Wisconsin (UW) and histidine-tryptophan-ketoglutarate (HTK), remain a topic of debate in recent clinical studies. P-selectins represent glycoproteins expressed on endothelial cells and platelets responsible for the earliest events in ischemia/reperfusion injury in kidney transplantation. This study aimed to compare the levels of P-selectin expression between cold preserved kidney tissues in UW and HTK solutions. Thirty kidneys were procured from male Lewis rats and stored in cold (4°C) solutions for periods of 4, 12, 16, 20, and 24h. Group 1 (n=15) kidneys were stored in UW solutions, and group 2 (n=15) kidneys were submerged in HTK solutions. At the end of each time point, the kidneys underwent preparation and levels of P-selectin expression in the tissues were measured using Immunoblot analyses and adjusted volumetric quantification of Western blot signals. For all periods of cold preservation, P-selectin expression was significantly down-regulated in kidney tissues stored in UW compared with HTK solutions (P<0.001). In summary, UW demonstrated a significant benefit over HTK solution in down-regulating P-selectin expression in cold preserved kidney grafts.
Asunto(s)
Criopreservación/métodos , Riñón/metabolismo , Soluciones Preservantes de Órganos , Selectina-P/metabolismo , Adenosina/farmacología , Alopurinol/farmacología , Animales , Regulación hacia Abajo/efectos de los fármacos , Glucosa/farmacología , Glutatión/farmacología , Insulina/farmacología , Isquemia/metabolismo , Isquemia/patología , Riñón/efectos de los fármacos , Riñón/patología , Masculino , Manitol/farmacología , Modelos Animales , Necrosis/metabolismo , Necrosis/patología , Soluciones Preservantes de Órganos/farmacología , Cloruro de Potasio/farmacología , Procaína/farmacología , Rafinosa/farmacología , Ratas , Ratas Endogámicas LewRESUMEN
Undertaking transplantation in highly sensitized African American (AA) patients as transplant recipients represents a unique challenge. We retrospectively compared the outcomes of AA with non-African American (NAA) patients who had panel reactive antibody >80% and received deceased donor (DD) kidneys by virtual crossmatch. Immunosuppressive regimen included basiliximab induction and tacrolimus, mycophenolate acid and steroids maintenance. Among 835 consecutive transplants from 1998 to 2007, 142 (17%) were sensitized patients including 89 (16.6%) AA and 53 (17.7%) NAA patients. The AA group had similar 5-year incidence of acute rejection as NAA group (21.4% vs. 26.4%, P = 0.25). Kaplan-Meier estimated graft survival at 1, 3 and 5 years were 91%, 85% and 82% in AA group, and 94%, 79% and 71% in NAA group (P = 0.08). The death-censored graft survival at 1, 3, and 5 years were 93%, 86% and 84% in AA group, and 96%, 83% and 78% in NAA group (P = 0.11). The 1, 3, and 5 years patient survivals were 93%, 88% and 85% in AA group, and 96%, 96% and 94% in NAA group (P = 0.17). Highly sensitized AA patients could be transplanted with DD kidneys at a similar rate as NAA patients, and they may not have a higher incidence of rejection or an inferior graft survival than NAA patients.
Asunto(s)
Negro o Afroamericano , Supervivencia de Injerto , Trasplante de Riñón/inmunología , Adulto , Femenino , Antígenos HLA/inmunología , Humanos , Inmunosupresores/uso terapéutico , Trasplante de Riñón/mortalidad , Louisiana/epidemiología , Masculino , Persona de Mediana Edad , Donantes de Tejidos , Resultado del TratamientoRESUMEN
Although living donation is the preferred method of kidney transplant, many donors are not a match with their intended recipient. One unique way of overcoming this is by performing a donor paired exchange. By swapping donors, transplant centers may be able to bring about multiple transplants that would not have otherwise been possible. This manuscript describes the first three way domino paired donor exchange transplant in Louisiana. Because of a single altruistic donor, we were able to facilitate three recipients getting transplanted. We discuss the formulation of this unique program, the choosing of potential donor/recipient pairs and outcomes. A review of the controversies of paired kidney donation is also presented.
Asunto(s)
Altruismo , Trasplante de Riñón/psicología , Donantes de Tejidos/psicología , Adulto , Anciano , Incompatibilidad de Grupos Sanguíneos , Selección de Donante , Femenino , Humanos , Trasplante de Riñón/inmunología , Louisiana , Masculino , Selección de Paciente , Resultado del TratamientoRESUMEN
BACKGROUND: Efforts to improve surgical safety are limited by several factors and no consensus exists regarding the most effective way to improve surgical quality. The use of ISO 9001 quality standards within healthcare is recognized but has not been widely applied for improving surgical outcomes. METHODS: A surgical quality committee was created using ISO 9001:2015 standards. Quality objectives were assessed to understand how any suggested changes will be impacted due to risks and opportunities inherent in the system. RESULTS: The initial quality focus was on surgical site infections in 5 services. Change in surgical infection ratio from 2018 to 2019 showed significant improvement: coronary bypass 1.288 vs. 0.901; Colon 1.359 vs. 0.589; Hysterectomy 2.119 vs. 1.022; Knee 1.391 vs. 0.306; Hip 0 vs. 0.302. CONCLUSIONS: This is one of the first studies using ISO 9001 to improve surgical quality. The results indicate both acceptance and success of applying continual improvement strategies.
Asunto(s)
Comités Consultivos/organización & administración , Cirugía General/normas , Internacionalidad , Mejoramiento de la Calidad , Indicadores de Calidad de la Atención de Salud , HumanosRESUMEN
Mesenchymal and hematopoietic tissues are important reservoirs of adult stem cells. The potential of tissue resident mesenchymal stem cells (MSCs) to differentiate into cells of mesodermal and ectodermal lineages has been reported previously. We examined the hypothesis that adherent adipose tissue resident mesenchymal stem cells (ASCs) are capable of generating cells with hematopoietic characteristics. When cultured in differentiation media, clonally isolated ASCs develop into cells with hematopoietic attributes. The hematopoietic differentiated cells (HD) express early hematopoietic (c-kit, PROM1, CD4) as well as monocyte/macrophage markers (CCR5, CD68, MRC1, CD11b, CSF1R). Additionally, HD cells display functional characteristics of monocyte/macrophages such as phagocytosis and enzymatic activity of α-Naphthyl Acetate Esterase. HD cells are also responsive to stimulation by IL-4 and LPS as shown by increased CD14 and HLA-DRB1 expressions and release of IL-2, IL10, and TNF. Taken together, this study characterizes the potential of ASCs to generate functional macrophages in vitro, and therefore paves way for their possible use in cell therapy applications.
Asunto(s)
Tejido Adiposo/fisiología , Hematopoyesis , Células Madre Hematopoyéticas/fisiología , Macrófagos/fisiología , Células Madre Mesenquimatosas/fisiología , Tejido Adiposo/citología , Tejido Adiposo/inmunología , Tejido Adiposo/metabolismo , Biomarcadores/metabolismo , Adhesión Celular , Diferenciación Celular , Linaje de la Célula , Células Cultivadas , Células Clonales , Células Madre Hematopoyéticas/inmunología , Células Madre Hematopoyéticas/metabolismo , Humanos , Macrófagos/inmunología , Macrófagos/metabolismo , Células Madre Mesenquimatosas/inmunología , Células Madre Mesenquimatosas/metabolismo , Naftol AS D Esterasa/metabolismo , Fagocitosis , Factores de TiempoRESUMEN
INTRODUCTION: We examined the effects of increasing human leukocyte antigen (HLA) mismatches (MM) on long-term graft outcomes in patients transplanted with a panel reactive antibody (PRA) >80% over a 10-yr period. METHODS: A total of 142 recipients were divided into three groups based on the number of HLA MM with their allograft (0-2, 3-4 and 5-6 MM; Groups I, II and III). All patients received the same immunosuppression protocol. RESULTS: The higher MM groups had a higher incidence of rejection (4.4% vs. 11.4% vs. 31.3%, p < 0.01). A multivariate analysis showed that rejection was the only significant variable affecting graft loss (OR = 7.45, p = 0.01). There was a trend toward more CMV infection and worse graft function with higher MM. Kaplan-Meier five-yr graft survival estimates were 100% vs. 81% vs. 74% for Groups I, II and III, respectively (p = 0.14). CONCLUSIONS: In patients with PRA levels >80%, a higher HLA MM is associated with higher incidence of acute rejection. Acute rejection was the only significant variable affecting graft loss. We found a trend toward more CMV infections and worse graft outcomes with higher MM. Closer HLA matching and immunologic monitoring needs to be considered to improve graft outcomes among sensitized recipients.
Asunto(s)
Rechazo de Injerto/inmunología , Antígenos HLA/inmunología , Isoanticuerpos/sangre , Trasplante de Riñón/inmunología , Trasplante Homólogo/inmunología , Adulto , Femenino , Estudios de Seguimiento , Supervivencia de Injerto , Prueba de Histocompatibilidad , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Tasa de SupervivenciaRESUMEN
Obesity is a worldwide epidemic and public health crisis associated with severe comorbidity leading to end organ dysfunction and poorer transplant outcome. Large population studies show decreased patient and graft survival in obese kidney transplant patients. Despite the poorer outcomes, kidney transplant is considered because of the survival benefit as compared to the wait-listed dialysis patients. In liver transplantation, the benefit of transplant as compared to remaining on the list is obvious because there is no viable liver dialysis at this time.Obesity in potential organ donors impacts both medical and surgical issues. Obesity-related kidney disease affects both the remaining and transplanted kidney. Pancreas donor organs are associated with decreased early graft survival. Liver donor organs with significant steatosis lead to an increased risk for delayed function or nonfunction of the organ.Immunosuppressive drugs with variable lipophilicity and altered volume of distribution can greatly affect the therapeutic usefulness of these drugs.Transplant candidates benefit from a multidisciplinary team approach to their care. As the epidemic progresses and less invasive treatments for metabolic surgery evolve, we are likely to see more patients lose weight before transplant as we continue to strive for improved outcomes.
Asunto(s)
Obesidad/complicaciones , Trasplante de Órganos , Complicaciones Posoperatorias/etiología , Cirugía Bariátrica , Índice de Masa Corporal , Comorbilidad , Estudios Transversales , Funcionamiento Retardado del Injerto/epidemiología , Funcionamiento Retardado del Injerto/etiología , Rechazo de Injerto/epidemiología , Rechazo de Injerto/etiología , Humanos , Inmunosupresores/efectos adversos , Inmunosupresores/farmacocinética , Inmunosupresores/uso terapéutico , Trasplante de Riñón , Obesidad/epidemiología , Complicaciones Posoperatorias/epidemiología , Cuidados Preoperatorios , Factores de Riesgo , Donantes de Tejidos , Estados Unidos , Pérdida de PesoRESUMEN
BACKGROUND: Reports of primary intraabdominal synovial sarcomas are extremely rare. METHODS: A literature review using PubMed was performed. A retrospective review of the one known case at our institution was completed. RESULTS: Even the most experienced pathologists report that synovial sarcomas can be very difficult to diagnose correctly. One cytogenic abnormality that is common (> 90%) and pathognomonic for synovial sarcoma is a characteristic chromosomal translocation resulting in the SYT/SSX fusion gene. Wide regional excision has been performed for intraabdominal sarcoma, with improved results. Our patient is more than 24 months with no evidence of recurrent or metastatic disease. CONCLUSIONS: The prognosis for patients with intraabdominal synovial sarcoma remains poor. However, wide regional excision may allow for prolonged disease-free survival.
Asunto(s)
Neoplasias del Íleon/cirugía , Laparoscopía/métodos , Sarcoma Sinovial/cirugía , Adulto , Diagnóstico Diferencial , Femenino , Estudios de Seguimiento , Humanos , Neoplasias del Íleon/diagnóstico , Sarcoma Sinovial/diagnóstico , Tomografía Computarizada por Rayos XRESUMEN
Combined heart-kidney transplantation (CHKT) is a therapy for a carefully selected subgroup of patients with concomitant heart and kidney failure. Discerning whether there is reversible or irreversible kidney disease is crucial to selection for CHKT versus heart transplant alone to optimize therapeutic value and organ allocation. Methods for determining extent of kidney disease include estimating glomerular filtration rate, creatinine clearance, kidney ultrasonography, and kidney biopsy. Additionally, the use of extracorporeal membrane oxygenation (ECMO) in the setting of CHKT only recently emerged as feasible. We present a case of a 69-year-old man with cardiogenic shock who was placed on venoarterial-ECMO (VA-ECMO) following orthotopic heart transplant (OHT) due to severe mediastinal bleeding and remained on VA-ECMO during kidney transplant. To our knowledge, this is the second report of a patient undergoing kidney transplant while on VA-ECMO following OHT.