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1.
Langenbecks Arch Surg ; 400(3): 371-9, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25681238

RESUMEN

PURPOSE: Severe bleeding after trauma frequently leads to a poor outcome. Prehospital fluid replacement therapy is considered an important primary treatment option. We conducted a retrospective matched pair analysis to assess the influence of prehospital fluid replacement volume on the clinical course of patients with solid abdominal organ trauma. METHODS: Data were analyzed from 51,425 patients in TraumaRegister DGU® of the German Trauma Society. Inclusion criteria were as follows: injury severity score ≥ 16 points, primary admission, age ≥ 16 years, no isolated brain injury, transfusion of at least one unit of packed red blood cells (pRBCs), and systolic blood pressure ≥ 20 mmHg at the accident site. The patients were divided into "low-volume" (0-1000 ml) and "high-volume" (≥ 1,500 ml) groups according to the matched pair criteria. In each group, 68 patients met the inclusion criteria. RESULTS: Higher volume in fluid replacement was associated with increased need for transfusion (pRBCs: low-volume: 7.71 units, high-volume: 9.16 units; p = 0.074) and with by trend reduced clotting ability (prothrombin time: low-volume: 71.47 %, high-volume: 66.47 %; p = 0.27). The percentage of patients in shock (systolic blood pressure <90 mmHg) upon admission was equal in the two groups (25.0 %; p = 1). The mortality rate was discretely higher in the high-volume group (low-volume: 11.8 %, high-volume: 19.1 %; p = 0.089). CONCLUSIONS: Excessive prehospital fluid replacement is able to lead in an increased mortality rate in patients with solid abdominal organ injury. Our results support the concept of restrained fluid replacement in the preclinical treatment of severe trauma patients.


Asunto(s)
Traumatismos Abdominales/cirugía , Fluidoterapia/efectos adversos , Cuidados Preoperatorios/métodos , Adulto , Transfusión Sanguínea/estadística & datos numéricos , Femenino , Alemania , Humanos , Puntaje de Gravedad del Traumatismo , Masculino , Análisis por Apareamiento , Estudios Prospectivos , Tiempo de Protrombina , Sistema de Registros , Estudios Retrospectivos , Factores de Riesgo , Choque/complicaciones , Choque/terapia , Resultado del Tratamiento
2.
Radiology ; 275(3): 889-99, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25668520

RESUMEN

PURPOSE: To assess whether ultrasonography (US)-based real-time elastography (RTE) can be used to detect gut fibrosis. MATERIALS AND METHODS: In this institutional review board-approved, prospective, proof-of-concept study, unaffected and affected gut segments in 10 patients with Crohn disease (four women, six men; median age, 49 years) were examined pre-, intra-, and postoperatively with US, including RTE to assess strain. Disease activity was scored by using the Limberg index on the basis of (a) bowel wall thickness and (b) size and extent of Doppler signal. After surgical resection, strain of full gut wall segments was measured with direct tensiometry. Gut wall layers, fibrosis, and collagen content were quantified histologically. Aggregated data per patient, disease status, and available measurements were assessed with mixed-effects models. RESULTS: Unaffected versus affected gut segments yielded higher RTE (mean ± standard deviation, 169.0 ± 27.9 vs 43.0 ± 25.9, respectively) and tensiometry (mean, 77.1 ± 21.4 vs 13.3 ± 11.2, respectively) values used to assess strain (both P < .001). There was good correlation between pre-, intra-, and postoperative RTE values of unaffected (intraclass correlation coefficient, 0.572) and affected (intraclass correlation coefficient, 0.830) segments. RTE was not associated with pre- or intraoperative Limberg scores (median, 1 vs 2; P = .255 and .382, respectively). Affected internal (median, 2011 vs 1363 µm; P = .011) and external (median, 929 vs 632 µm; P = .013) muscularis propria, serosa (median, 245 vs 64 µm; P = .019), and muscularis mucosae (median, 451 vs 80 µm; P = .031) were wider than unaffected segments. Width differences of internal muscularis propria and mucularis mucosae were associated with RTE-assessed strain (P = .044 and .012, respectively) and tensiometry-assessed strain (P = .006 and .014, respectively). Masson trichrome (median, 4 vs 0; P < .001) and elastica-van Gieson (median, 805 346 µm(2) vs 410 649 µm(2); P < .001) stains and western blotting (median, 2.01 vs 0.87; P = .009) demonstrated a higher collagen content in affected versus unaffected segments and were associated with RTE-assessed strain (both P < .001) and tensiometry-assessed strain (P < .001 and 0.025, respectively). CONCLUSION: RTE can be used to detect fibrosis in human Crohn disease. Online supplemental material is available for this article.


Asunto(s)
Enfermedad de Crohn/complicaciones , Enfermedad de Crohn/diagnóstico por imagen , Diagnóstico por Imagen de Elasticidad , Tracto Gastrointestinal/diagnóstico por imagen , Tracto Gastrointestinal/patología , Adulto , Anciano , Sistemas de Computación , Constricción Patológica , Femenino , Fibrosis/diagnóstico por imagen , Fibrosis/etiología , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos
3.
Dig Liver Dis ; 46(10): 903-8, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25091876

RESUMEN

BACKGROUND: Elevated IgG4 levels have been reported among patients with primary sclerosing cholangitis. Epidemiological data has only been provided from tertiary centres. AIMS: To investigate the prevalence of elevated IgG4 levels and to compare prognosis between patients with and without elevated IgG4 levels in serum in two European cohorts of patients with primary sclerosing cholangitis. METHODS: Serum IgG4-levels were measured in a consecutive series of patients from Berlin, and retrospectively collected in a population-based cohort from Sweden (total N=345). Cox's proportional hazard analysis was used to calculate relative risks for liver-related death or liver transplantation and cholangiocarcinoma. RESULTS: Elevated IgG4 values were demonstrated in 10% of patients. A previous history of pancreatitis, combined intra- and extrahepatic biliary involvement and jaundice were independently associated with elevated IgG4 in multivariate analysis. IgG4 status was not associated with an increased risk for the combined endpoint liver-related death or liver transplantation or cholangiocarcinoma. CONCLUSION: The prevalence of elevated IgG4 values among European patients with primary sclerosing cholangitis is similar to what previously has been reported from the United States. Elevated IgG4 was not associated with an increased risk of liver transplantation or liver-related death or cholangiocarcinoma.


Asunto(s)
Colangitis Esclerosante/inmunología , Inmunoglobulina G/sangre , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de los Conductos Biliares/etiología , Conductos Biliares Intrahepáticos , Biomarcadores/sangre , Niño , Colangiocarcinoma/etiología , Colangitis Esclerosante/complicaciones , Colangitis Esclerosante/mortalidad , Colangitis Esclerosante/cirugía , Femenino , Humanos , Trasplante de Hígado , Modelos Logísticos , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
4.
HPB Surg ; 2014: 970234, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24723741

RESUMEN

Introduction. Although ampullary carcinoma has the best prognosis among all periampullary carcinomas, its long-term survival remains low. Prognostic factors are only available for a period of 10 years after pancreaticoduodenectomy. The aim of this retrospective study was to identify factors that influence the long-term patient survival over a 15-year observation period. Methods. From 1992 to 2007, 143 patients with ampullary carcinoma underwent pancreatic resection. 86 patients underwent pylorus-preserving pancreaticoduodenectomy (60%) and 57 patients underwent standard Kausch-Whipple pancreaticoduodenectomy (40%). Results. The overall 1-, 5-, 10-, and 15-year survival rates were 79%, 40%, 24%, and 10%, respectively. Within a mean observation period of 30 (0-205) months, 100 (69%) patients died. Survival analysis showed that positive lymph node involvement (P = 0.001), lymphatic vessel invasion (P = 0.0001), intraoperative administration of packed red blood cells (P = 0.03), an elevated CA 19-9 (P = 0.03), jaundice (P = 0.04), and an impaired patient condition (P = 0.01) are strong negative predictors for a reduced patient survival. Conclusions. Patients with ampullary carcinoma have distinctly better long-term survival than patients with pancreatic adenocarcinoma. Long-term survival depends strongly on lymphatic nodal and vessel involvement. Moreover, a preoperative elevated CA 19-9 proved to be a significant prognostic factor. Adjuvant therapy may be essential in patients with this risk constellation.

5.
Exp Clin Transplant ; 11(6): 510-21, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24344944

RESUMEN

OBJECTIVES: Patients who have a liver transplant for primary sclerosing cholangitis may develop recurrent disease and biliary complications, organ loss necessitating revision liver transplant, or death. We evaluated long-term outcomes in patients who had liver transplant for primary sclerosing cholangitis. MATERIALS AND METHODS: In 71 patients who had a liver transplant for end-stage liver disease because of primary sclerosing cholangitis, a retrospective review was done to evaluate biliary complication-free survival, transplanted organ survival, and death. Human leukocyte antigen typing and matching were reviewed. RESULTS: There were 39 patients (55%) who had biliary complications, loss of the liver transplant, or death at a mean 12.1 years after transplant. The 5- and 10-year event-free survival reached 74.6% and 45% (53 patients after 5 years, and 32 patients after 10 years). Male sex of transplant recipients was a significant risk factor for biliary complications, revision liver transplant, or death. Most patients had inflammatory bowel disease, primarily ulcerative colitis. The human leukocyte antigen profile or number of mismatches had no effect on complication-free survival. CONCLUSIONS: Biliary complications, revision liver transplant, and death are a useful combined primary endpoint for recurrent primary sclerosing cholangitis after liver transplant.


Asunto(s)
Enfermedades de las Vías Biliares/epidemiología , Colangitis Esclerosante/mortalidad , Colangitis Esclerosante/cirugía , Rechazo de Injerto/epidemiología , Trasplante de Hígado , Adolescente , Adulto , Anciano , Femenino , Estudios de Seguimiento , Antígenos HLA , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Factores Sexuales , Tasa de Supervivencia , Resultado del Tratamiento , Adulto Joven
6.
Ann Transplant ; 18: 223-30, 2013 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-23792524

RESUMEN

BACKGROUND: Incisional hernia after liver transplantation is a common complication with an incidence between 5% and 34%. This prospective study analyzed risk factors, surgical management and long-term results after hernia repair. MATERIAL AND METHODS: From February 2002 until August 2009, 810 liver transplantations were performed. 77 patients (9.5%) underwent incisional hernia repair after a median time of 21.1 months (4.6-76.7) following transplant. These patients were compared to patients without hernia (n=733). RESULTS: No statistically significant differences between the groups were observed with respect to gender, underlying liver disease, Child-Pugh classification, MELD-Score and preoperative renal failure (p=NS). Multivariate analysis revealed advanced age (p=0.014), body mass index (p=0.016), and re-laparotomies (p<0.001) as independent risk factors for incisional hernias. Pre-existing diabetes mellitus and immunosuppression with mycophenolate mofetil reached significance only in the univariate analysis (p<0.001). Recurrent hernia was observed in 12 of 77 patients (15.6%) at a median time of 7.9 months (4.8-46.8) after primary surgical repair. The recurrence rate after intraperitoneal onlay mesh implantation was lower compared to other mesh techniques (7.7% vs. 21.4%). CONCLUSIONS: The risk factors for the development of incisional hernias in liver transplant patients are similar to patients with prior abdominal surgery for other reasons. Intraperitoneal onlay mesh implantation may lead to a decrease of hernia recurrences. The role of immunosuppression in the genesis of incisional hernias requires further elucidation.


Asunto(s)
Hernia Ventral/etiología , Trasplante de Hígado/efectos adversos , Femenino , Alemania/epidemiología , Hernia Ventral/epidemiología , Hernia Ventral/cirugía , Herniorrafia , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Recurrencia , Factores de Riesgo , Mallas Quirúrgicas
7.
Gastroenterology ; 144(5): 1116-28, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23391819

RESUMEN

BACKGROUND & AIMS: IgG4-related cholangitis is a chronic inflammatory biliary disease that involves different parts of the pancreatobiliary system, but little is known about its mechanisms of pathogenesis. A T-helper (Th) 2 cell cytokine profile predominates in liver tissues from these patients. We investigated whether Th2 cytokines disrupt the barrier function of biliary epithelial cells (BECs) in patients with IgG4-related cholangitis. METHODS: We assessed the Th2 cytokine profile in bile samples and brush cytology samples from 16 patients with IgG4-related cholangitis and respective controls, and evaluated transcription of tight junction (TJ)-associated proteins in primary BECs from these patients. The effect of Th2 cytokines on TJ-mediated BEC barrier function and wound closure was examined by immunoblot, transepithelial resistance, charge-selective Na(+)/Cl(-) permeability, and 4-kDa dextran flux analyses. RESULTS: Bile samples from patients with IgG4-related cholangitis had significant increases in levels of Th2 cytokines, interleukin (IL)-4, and IL-5. IL-13 was not detected in bile samples, but polymerase chain reaction analysis of whole-brush cytology samples from patients with IgG4-related cholangitis revealed increased levels of IL-13 mRNA, compared with controls. BECs isolated from the brush cytology samples revealed decreased levels of claudin-1 and increased levels of claudin-2 mRNAs. In vitro, IL-4 and IL-13 significantly reduced TJ-associated BEC barrier function by activating claudin-2-mediated paracellular pore pathways. Th2 cytokines also impaired wound closure in BEC monolayers. CONCLUSIONS: Th2 cytokines predominate in bile samples from patients with IgG4-related cholangitis and disrupt the TJ-mediated BEC barrier in vitro. Subsequent increases in biliary leaks might contribute to the pathogenesis of chronic biliary inflammation in these patients.


Asunto(s)
Bilis/metabolismo , Permeabilidad de la Membrana Celular/inmunología , Colangitis/inmunología , Citocinas/metabolismo , Células Epiteliales/metabolismo , Inmunoglobulina G/inmunología , Células Th2/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Anticuerpos Antiidiotipos/inmunología , Anticuerpos Antiidiotipos/metabolismo , Western Blotting , Células Cultivadas , Colangitis/metabolismo , Colangitis/patología , Ensayo de Inmunoadsorción Enzimática , Células Epiteliales/patología , Femenino , Humanos , Inmunidad Celular , Masculino , Persona de Mediana Edad , Uniones Estrechas
8.
J Crohns Colitis ; 6(3): 294-301, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22405165

RESUMEN

BACKGROUND AND AIMS: To evaluate fat saturated (fs) T2-weighted (w) fast relaxation fast spin echo (FRFSE)-sequences compared to the standard protocol with contrast agent for the evaluation of inflammatory activity in patients with Crohn's Disease (CD). METHODS: Fourty-eight patients (male, 17; female, 33; mean age, 37 years) with suspicion of inflammatory activity in proven CD who underwent MR enteroclysis (MRE) at 1.5T (GE Healthcare) were retrospectively included. Two blinded radiologists analyzed MRE images for presence and extent of CD lesions and degree of local inflammation for fsT2-w FRFSE and contrast enhanced T1-w images (T2-activity; T1-activity; score, 1-4) in consensus. Furthermore, mural signal intensity (SI) ratios (T2-ratio; T1-ratio) were recorded. Patient based MRE findings were correlated with endoscopic (45 patients), surgical (6 patients), histopathological, and clinical data (CDAI) as a surrogate reference standard. RESULTS: In total, 24 of 48 eligible patients presented with acute inflammatory activity with 123 affected bowel segments. ROC analysis of the total inflammatory score presented an AUC of 0.93 (p<0.001) for T2-activity (T1-activity, AUC 0.63; p=0.019). ROC analysis revealed an AUC of 0.76 (p<0.001) for the T2-ratio (T1-ratio, AUC 0.51; p=0.93). General linear regression model revealed T2-activity (p=0.001) and age (p=0.024) as predictive factors of acute bowel inflammation. CONCLUSIONS: T2-w FRFSE-sequences can depict CD lesions and help to assess the inflammation activity, even with improved accuracy as compared to contrast-enhanced T1-w sequences.


Asunto(s)
Colitis/diagnóstico , Enfermedad de Crohn/inmunología , Enteritis/diagnóstico , Enfermedades del Yeyuno/diagnóstico , Imagen por Resonancia Magnética/métodos , Proctitis/diagnóstico , Adulto , Área Bajo la Curva , Proteína C-Reactiva/metabolismo , Colitis/complicaciones , Medios de Contraste , Enfermedad de Crohn/etiología , Enfermedad de Crohn/patología , Enteritis/complicaciones , Femenino , Humanos , Ileítis/complicaciones , Ileítis/diagnóstico , Enfermedades del Yeyuno/complicaciones , Recuento de Leucocitos , Modelos Lineales , Masculino , Valor Predictivo de las Pruebas , Proctitis/complicaciones , Curva ROC , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Método Simple Ciego , Estadísticas no Paramétricas
9.
Liver Transpl ; 18(3): 282-9, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22139868

RESUMEN

The International Liver Transplantation Society held its yearly meeting as a joint conference with the European Liver and Intestine Transplant Association and the Liver Intensive Care Group of Europe at the Valencia Congress Center (Valencia, Spain) from June 22 to 25, 2011. Nearly 1500 registrants attended the meeting, which opened with a premeeting conference entitled "Global Challenges and Controversies in Liver Transplantation." This was followed by numerous oral and poster abstract sessions and topic sessions focused on medical, surgical, and intensive care aspects of liver transplantation (LT). This report summarizes key symposia and oral abstracts delivered at the meeting and is conveniently divided into subsections relevant to LT. It is not meant to be a critical or comprehensive evaluation of all the meeting presentations and is merely intended to highlight presentations and associated published literature dealing with key topics.


Asunto(s)
Trasplante de Hígado , Carcinoma Hepatocelular/cirugía , Europa (Continente) , Rechazo de Injerto , Hepatitis Viral Humana/cirugía , Humanos , Terapia de Inmunosupresión , Fallo Hepático/cirugía , Neoplasias Hepáticas/cirugía , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/métodos , Donadores Vivos , Atención Perioperativa , Complicaciones Posoperatorias/etiología
10.
Cell Immunol ; 271(1): 97-103, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21724180

RESUMEN

Monocytes and macrophages link the innate and adaptive immune systems and protect the host from the outside world. In inflammatory disorders their activation leads to tissue damage. Galectins have emerged as central regulators of the immune system. However, if they regulate monocyte/macrophage physiology is still unknown. Binding of Gal-1, Gal-2, Gal-3 and Gal-4 to monocytes/macrophages, activation, cytokine secretion and apoptosis were determined by FACS, migration by Transwell system and phagocytosis by phagotest. Supernatants from macrophages co-cultured with galectins revealed their influence on T-cell function. In our study Gal-1, Gal-2, Gal-4, and partly Gal-3 bound to monocytes/macrophages. Galectins prevented Salmonella-induced MHCII upregulation. Cytokine release was distinctly induced by different galectins. T-cell activation was significantly restricted by supernatants of macrophages co-cultured in the presence of Gal-2 or Gal-4. Furthermore, all galectins tested significantly inhibited monocyte migration. Finally, we showed for the first time that galectins induce potently monocyte, but not macrophage apoptosis. Our study provides evidence that galectins distinctively modulate central monocyte/macrophage function. By inhibiting T-cell function via macrophage priming, we show that galectins link the innate and adaptive immune systems and provide new insights into the action of sugar-binding proteins.


Asunto(s)
Citocinas/inmunología , Galectinas/inmunología , Macrófagos/inmunología , Monocitos/inmunología , Apoptosis/inmunología , Unión Competitiva , Movimiento Celular/inmunología , Células Cultivadas , Citocinas/metabolismo , Citometría de Flujo , Galectina 1/inmunología , Galectina 1/metabolismo , Galectina 2/inmunología , Galectina 2/metabolismo , Galectina 3/inmunología , Galectina 3/metabolismo , Galectina 4/inmunología , Galectina 4/metabolismo , Galectinas/metabolismo , Antígenos de Histocompatibilidad Clase II/inmunología , Antígenos de Histocompatibilidad Clase II/metabolismo , Humanos , Macrófagos/metabolismo , Monocitos/metabolismo , Fagocitosis/inmunología , Unión Proteica , Salmonella/inmunología , Linfocitos T/inmunología , Linfocitos T/metabolismo
11.
Purinergic Signal ; 7(4): 427-34, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21656186

RESUMEN

Liver ischemia reperfusion injury is associated with both local damage to the hepatic vasculature and systemic inflammatory responses. CD39 is the dominant vascular endothelial cell ectonucleotidase and rapidly hydrolyses both adenosine triphosphate (ATP) and adenosine diphosphate to adenosine monophosphate. These biochemical properties, in tandem with 5'-nucleotidases, generate adenosine and potentially illicit inflammatory vascular responses and thrombosis. We have evaluated the role of CD39 in total hepatic ischemia reperfusion injury (IRI). Wildtype mice, Cd39-hemizygous mice (+/-) and matched Cd39-null mice (-/-); (n = 25 per group) underwent 45 min of total warm ischemia with full inflow occlusion necessitating partial hepatectomy. Soluble nucleoside triphosphate diphosphohydrolase (NTPDases) or adenosine/amrinone were administered to wildtype (n = 6) and Cd39-null mice (n = 6) in order to study protective effects in vivo. Parameters of liver injury, systemic inflammation, hepatic ATP determinations by P(31)-NMR and parameters of lung injury were obtained. All wildtype mice survived up to 7 days with minimal biochemical disturbances and minor evidence for injury. In contrast, 64% of Cd39+/- and 84% of Cd39-null mice required euthanasia or died within 4 h post-reperfusion with liver damage and systemic inflammation associated with hypercytokinemia. Hepatic ATP depletion was pronounced in Cd39-null mice posthepatic IRI. Soluble NTPDase or adenosine administration protected Cd39-deficient mice from acute reperfusion injury. We conclude that CD39 is protective in hepatic IRI preventing local injury and systemic inflammation in an adenosine dependent manner. Our data indicate that vascular CD39 expression has an essential protective role in hepatic IRI.

13.
Med Klin (Munich) ; 105(4): 227-31, 2010 Apr.
Artículo en Alemán | MEDLINE | ID: mdl-20455038

RESUMEN

BACKGROUND: Locally advanced cancer of the body of the pancreas with infiltration of the celiac trunk and its branches is often considered an unresectable disease. Distal pancreatectomy with resection of the celiac trunk was described as a new concept for the curative treatment of these tumors. CASE REPORT: The case of a 61-year-old female patient is reported, who underwent distal pancreatectomy with splenectomy and resection of the celiac trunk for locally advanced cancer of the pancreatic body with infiltration of the celiac trunk. The celiac trunk was embolized preoperatively in order to assure arterial perfusion of the liver. CONCLUSION: Distal pancreatectomy with en bloc resection of the celiac trunk offers a high resectability rate and thus a curative option for locally advanced cancer of the pancreatic body with vascular invasion. The optimization of patient selection and the development of effective adjuvant chemotherapy could significantly improve the survival of patients subjected to this operation.


Asunto(s)
Carcinoma Ductal de Mama/cirugía , Arteria Celíaca/patología , Arteria Celíaca/cirugía , Pancreatectomía/métodos , Neoplasias Pancreáticas/patología , Neoplasias Pancreáticas/cirugía , Esplenectomía/métodos , Carcinoma Ductal de Mama/patología , Pancreatocolangiografía por Resonancia Magnética , Embolización Terapéutica , Femenino , Humanos , Isquemia/prevención & control , Hígado/irrigación sanguínea , Persona de Mediana Edad , Invasividad Neoplásica , Estadificación de Neoplasias , Páncreas/patología , Conductos Pancreáticos/patología , Cuidados Preoperatorios , Pronóstico , Bazo/patología , Estómago/irrigación sanguínea , Tomografía Computarizada por Rayos X
14.
Transpl Int ; 23(8): 831-41, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20180930

RESUMEN

Impaired hepatic arterial perfusion after orthotopic liver transplantation (OLT) may lead to ischemic biliary tract lesions and graft-loss. Hampered hepatic arterial blood flow is observed in patients with hypersplenism, often described as arterial steal syndrome (ASS). However, arterial and portal perfusions are directly linked via the hepatic arterial buffer response (HABR). Recently, the term 'splenic artery syndrome' (SAS) was coined to describe the effect of portal hyperperfusion leading to diminished hepatic arterial blood flow. We retrospectively analyzed 650 transplantations in 585 patients. According to preoperative imaging, 78 patients underwent prophylactic intraoperative ligation of the splenic artery. In case of postoperative SAS, coil-embolization of the splenic artery was performed. After exclusion of 14 2nd and 3rd retransplantations and 83 procedures with arterial interposition grafts, SAS was diagnosed in 28 of 553 transplantations (5.1%). Twenty-six patients were treated with coil-embolization, leading to improved liver function, but requiring postinterventional splenectomy in two patients. Additionally, two patients with SAS underwent splenectomy or retransplantation without preceding embolization. Prophylactic ligation could not prevent SAS entirely (n = 2), but resulted in a significantly lower rate of complications than postoperative coil-embolization. We recommend prophylactic ligation of the splenic artery for patients at risk of developing SAS. Post-transplant coil-embolization of the splenic artery corrected hemodynamic changes of SAS, but was associated with a significant morbidity.


Asunto(s)
Funcionamiento Retardado del Injerto/prevención & control , Hipertensión Portal/prevención & control , Trasplante de Hígado/efectos adversos , Complicaciones Posoperatorias , Arteria Esplénica/fisiopatología , Adolescente , Adulto , Anciano , Niño , Preescolar , Funcionamiento Retardado del Injerto/epidemiología , Funcionamiento Retardado del Injerto/fisiopatología , Embolización Terapéutica , Femenino , Humanos , Hipertensión Portal/epidemiología , Hipertensión Portal/terapia , Lactante , Ligadura , Trasplante de Hígado/métodos , Trasplante de Hígado/fisiología , Masculino , Persona de Mediana Edad , Sistema Porta/fisiopatología , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/cirugía , Complicaciones Posoperatorias/terapia , Reoperación , Estudios Retrospectivos , Factores de Riesgo , Esplenectomía , Arteria Esplénica/cirugía , Síndrome
15.
Liver Transpl ; 15 Suppl 2: S75-8, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-19877022

RESUMEN

1. There is a high prevalence of cardiovascular risk factors in liver transplant recipients. 2. There is a high incidence of premature onset of cardiovascular disease. 3. The choice of calcineurin inhibitor shows no long-term impact. 4. Established cardiovascular risk scores may determine an individual's risk for cardiovascular events. 5. Posttransplant arterial hypertension is a major burden. 6. Strict surveillance guidelines are needed. 7. Threshold levels for arterial blood pressure according to recommendations for high-risk individuals should be applied. 8. Therapeutic lifestyle changes should be encouraged. 9. Escalating pharmacological treatment with respect to renal function is recommended. 10. Alterations of immunosuppression should be considered.


Asunto(s)
Antihipertensivos/uso terapéutico , Enfermedades Cardiovasculares/terapia , Hipertensión/tratamiento farmacológico , Trasplante de Hígado/efectos adversos , Cuidados a Largo Plazo , Antihipertensivos/administración & dosificación , Enfermedades Cardiovasculares/epidemiología , Comorbilidad , Supervivencia de Injerto , Humanos , Hipertensión/epidemiología , Hepatopatías/epidemiología , Hepatopatías/cirugía , Enfermedades Metabólicas/epidemiología , Enfermedades Metabólicas/terapia , Medición de Riesgo , Factores de Riesgo , Resultado del Tratamiento
16.
Ann Surg ; 250(5): 766-71, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-19809299

RESUMEN

OBJECTIVE: The biliary anastomosis is still one of the major causes for morbidity after orthotopic liver transplantation. The optimal method of reconstruction remains controversial. The aim of the study was to assess biliary complications after liver transplantation using a choledochocholedochostomy with or without a temporary T-tube. BACKGROUND DATA: Several reports have suggested that biliary reconstruction without T-tube is a safer method with a lower rate of biliary complications compared with T-tube insertion. METHODS: A total of 194 recipients of deceased donor liver grafts were randomized. In group 1 the biliary reconstruction was performed by side-to-side choledochocholedochostomy with (n = 99) and in group 2 (n = 95) without a T-tube. The T-tube was removed after 6 weeks. RESULTS: The overall biliary complication rate was significantly increased in group 2 (P < 0.0005). Biliary leaks occurred in 5 patients in group 1 and in 9 patients in group 2 (5.05% vs. 9.47%; P = 0.2756 ns). Anastomotic strictures of the bile duct were seen in 7 patients in group 1 and in 8 patients in group 2 (7.07% vs. 8.42%; P = 0.7923 ns). Two of the patients in group 1 and 5 patients in group 2 developed an ischemic type biliary lesion (2.02% vs. 5.26%; P = 0.2716 ns). The rate of reoperations was comparable in both groups. The rate of invasive interventions was higher in the group without T-tubes (9% vs. 18%, P = ns), as was the rate of cholangitis (5% vs. 11%. P = ns) and pancreatitis (4% vs. 14%, P = 0.0218). No complications after removal of the T-tube were observed. CONCLUSION: This study is a large prospective randomized trial to assess biliary complications that occur following liver transplantation, after anatomizing the bile duct with or without T-tubes. A significant increased rate of complications in the group without T-tube insertion was observed. In summary, our results indicate that the usage of T-tubes is safe and an excellent tool for the quality control of biliary anastomoses.


Asunto(s)
Coledocostomía/métodos , Drenaje/instrumentación , Trasplante de Hígado/métodos , Anastomosis Quirúrgica/efectos adversos , Anastomosis Quirúrgica/métodos , Coledocostomía/efectos adversos , Femenino , Supervivencia de Injerto , Humanos , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias
18.
Liver Transpl ; 12(3): 394-401, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16498651

RESUMEN

Increased prevalence of cardiovascular risk factors has been acknowledged in liver transplant recipients, and an increased incidence of cardiovascular events has been suspected. Individual risk determination, however, has not yet been established. Outpatient charts of 438 primary liver transplants have been reviewed, and suspected cardiovascular risk factors were correlated with cardiovascular events observed during a follow-up period of 10 yr. Receiver operation characteristics curve (ROC) analysis was performed to validate established cardiovascular risk scores. For calibration, the Hosmer-Lemeshow test was performed. A total of 303 of 438 patients were available for risk factor analysis at 6 months and demonstrated complete follow-up data (175 male, 128 female). A total of 40 of those 303 patients experienced fatal or nonfatal cardiovascular events (13.2%). In univariate analysis, age (P < 0.001), gender (P = 0.002), body mass index (P = 0.018), cholesterol (P = 0.044), creatinine (P = 0.006), diabetes mellitus (P = 0.017), glucose (0.006), and systolic blood pressure (P = 0.043), but not cyclosporine A (P = 0.743), tacrolimus (P = 0.870), or steroid medication (P = 0.991), were significantly associated with cardiovascular events. Multivariate analysis, however, identified only age, gender, and cholesterol as independent predictors. In ROC analysis, corresponding areas under the curve for Systematic Coronary Risk Evaluation Project (SCORE), Prospective Cardiovascular Münster Study (PROCAM), and Framingham risk scores (FRSs) were calculated with 0.800, 0.778, and 0.707, respectively. Calibration demonstrated an improved goodness of fit for PROCAM compared to SCORE risk calculations. In conclusion, SCORE and PROCAM proved to be valuable in discriminating our liver transplant recipients for their individual risk of cardiovascular events. Furthermore, calibrated PROCAM risk estimates are required to calculate the number of patients needed to treat in the setup of prospective intervention trials.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Causas de Muerte , Trasplante de Hígado/mortalidad , Adulto , Distribución por Edad , Anciano , Enfermedades Cardiovasculares/diagnóstico , Femenino , Pruebas de Función Cardíaca , Humanos , Fallo Hepático/diagnóstico , Fallo Hepático/cirugía , Trasplante de Hígado/métodos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Valor Predictivo de las Pruebas , Pronóstico , Curva ROC , Estudios Retrospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Distribución por Sexo , Estadísticas no Paramétricas , Análisis de Supervivencia
19.
Am J Transplant ; 5(10): 2403-9, 2005 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-16162188

RESUMEN

Biliary complications such as ischemic (type) biliary lesions frequently develop following liver transplantation, requiring costly medical and endoscopic treatment. If conservative approaches fail, re-transplantation is most often an inevitable sequel. Because of an increasing donor organ shortage and unfavorable outcomes in hepatic re-transplantation, efforts to prolong graft survival become of particular interest. From a series of 1685 liver transplants, we herein report on three patients who underwent partial hepatic graft resection for (ischemic type) biliary lesions. In all cases, left hepatectomy (Couinaud's segments II, III and IV) was performed without Pringle maneuver or mobilization of the right liver. All patients fully recovered postoperatively, but biliary leakage required surgical revision twice in one patient. At last follow-up, two patients presented alive and well. The other patient with persistent hepatic artery thrombosis (HAT), however, demonstrated progression of disease in the right liver remnant and required re-transplantation 13 months after hepatic graft resection. Including our own patients, review of the literature identified 24 adult patients who underwent hepatic graft resection. In conclusion, partial graft hepatectomy can be considered a safe and beneficial procedure in selected liver transplant recipients with anatomical limited biliary injury, thereby, preserving scarce donor organs.


Asunto(s)
Hepatectomía/métodos , Trasplante de Hígado/métodos , Hígado/patología , Hígado/cirugía , Reoperación/métodos , Adulto , Conductos Biliares/patología , Colangitis Esclerosante/terapia , Progresión de la Enfermedad , Femenino , Fibrosis/terapia , Estudios de Seguimiento , Rechazo de Injerto , Supervivencia de Injerto , Arteria Hepática/patología , Hepatitis C/complicaciones , Humanos , Hígado/diagnóstico por imagen , Hepatopatías/etiología , Hepatopatías/cirugía , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Tiempo , Obtención de Tejidos y Órganos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Ultrasonografía
20.
Transpl Int ; 18(8): 967-74, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16008748

RESUMEN

Increased prevalence of cardiovascular risk-factors in liver transplant recipients compared with pretransplant and standard population data has been acknowledged. The impact of risk-profiles on cardiovascular event rates or death, however, has not yet been established. Here we evaluate the development of risk-factors during a prospective follow-up of 10 years in 302 patients and compare numbers of coronary events with data from the German Prospective Cardiovascular Münster (PROCAM)-Score population. Prevalence of overweight (17% vs. 27%), hypertension (70% vs. 80%), and diabetes (21% vs. 25%) increased from early to late after transplantation, while elevated serum cholesterol (64% vs. 37%) and triglycerides (40% vs. 21%) became less frequent. Cardiovascular risk-profiles favoring tacrolimus over ciclosporin A based immunosuppression early after transplantation converged over time. Increased risk-scores in liver transplant recipients matched with score standardized event rates in the PROCAM population (ratio: 1.11, 95% CI: 0.53-2.03), nine events were predicted for the transplant population and oppose 10 events observed. Thus, indicating a reflection of increased cardiovascular risk-profiles in corresponding numbers of cardiovascular events.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Trasplante de Hígado/efectos adversos , Adulto , Anciano , Humanos , Persona de Mediana Edad , Prevalencia , Factores de Riesgo
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