No función primaria del injerto hepático: 18 años de experiencia del Hospital Nacional Guillermo Almenara Irigoyen - EsSalud / Primary non function of hepatic allograft: 18 years' experience of Guillermo Almenara Irigoyen National Hospital - EsSalud

RESUMEN Introducción : La no función primaria del injerto (NFPI) después del trasplante hepático es la falla aguda del injerto, en ausencia de algún factor causal, como trombosis aguda de arteria hepática o vena porta. Objetivos : Describir las características perioperatorias de los pacientes trasplantados de Hígado que presentaron NFPI en el Departamento de Trasplantes del Hospital Guillermo Almenara Irigoyen. Materiales y métodos : Estudio retrospectivo, descriptivo y transversal. Desde marzo del 2000 a marzo del 2018 se realizaron 249 Trasplantes de hígado. La NFPI fue definida con los criterios de OPTN/UNOS, se manifiesta por aumento de transaminasas (>3 000 UI/ml), coagulopatía (INR >2,5), niveles altos de lactato (>4 mEq/l), PH en acidosis: PH arterial ≤7,30 y/o PH venoso ≤7,25 e inestabilidad hemodinámica que requiere soporte con drogas vasoactivas; puede llevar a la muerte sin retrasplante de emergencia. Resultados : Se diagnosticaron 8 pacientes con NFPI siendo una prevalencia de 3,7% de 216 trasplantes de hígado en adultos, la edad de los receptores fue 51,5±8,45 años, score de MELD basal 13,13±3,8 (rango 6-18). Las características de los donantes, la edad fue 38,5±14,48, todos ABO idénticos al receptor, la distribución geográfica: 7 de Lima metropolitana y 1 en Tacna. La causa de muerte encefálica 75% ACV Hemorrágico y 25% TEC grave. Respecto a factores transoperatorios el TIF 431±143 min [265 - 645 min], y TIC 81,8±46 min [57- 195 min], La estancia en UCI hasta el deceso del paciente fue 11,13±9,3 días (rango 2-31 días), el 12,5% fue retrasplantado. Conclusiones : La prevalencia de NFPI en nuestro centro después del trasplante hepático es 3,7% similar a las series reportadas por otros centros, y se asocia con mortalidad alta sin retrasplante hepático.

ABSTRACT Introduction : The primary nonfunction of the graft (PNF) after liver transplantation is acute graft failure, in the absence of some causal factor, such as acute thrombosis of the hepatic artery or portal vein. Objectives : Describe the perioperative characteristics of Liver transplant patients who presented NFPI in the Transplant Department of the Guillermo Almenara Irigoyen Hospital. Materials and methods : Retrospective, descriptive and cross-sectional study. From March 2000 to March 2018; 249 liver transplants were performed. The PNF was defined with y he criteria of OPTN/UNOS, manifested by increased transaminases (>3,000 UI/ml), coagulopathy (INR >2.5), high lactate levels (>4 mEq/l), PH in acidosis: PH arterial ≤7.30 and/or venous ≤7.25 and hemodynamic instability that requires support with vasoactive drugs. It can lead to death without emergency retransplantation. Results : 8 patient with PNF were diagnosed with a prevalence of 3.7%, the age of recipients was 51.5±8.45 years, the base MELD score 13.13±3.8 (range 6-18). The characteristics of the donors, the age was 38.5±14.48 years, all ABO identical to the recipients, the geographical distribution: 7 of metropolitan Lima and 1 in Tacna. The cause of encephalic death 75% hemorrhagic DCV and 25% severe TEC. Regarding transoperative factors, the CIT 431±143 min [265 - 645 min], and WIT 81.8±46 min [57- 195 min], the stay in the ICU until the death of the patients was 11.13±9.3 days (range 2-31 days), 12.5% was retransplant. Conclusions : The prevalence of PNF after liver transplant in our center is 3.7%. Similar to the series reported by other center, and is associated with high mortality without retransplantation.

Endoscopic management of biliary anastomotic stricture after orthotopic Hver transplantation / 中华消化内镜杂志

Objective To investigate an effective endoscopic management of biliary anastomotic stric-tures (AS) following orthotopic liver transplantation (OLT) and to evaluate the factors which may effect the ontcome. Methods Sixty-five patients, who were diagnosed as AS 3 months after OLT, underwent ERCP. Af-ter adequate dilation of the narrowing bile ducts, plastic stents, as many as possible, were inserted across the strictures and kept in place for at least six months. Results A total of 90 consecutive endoscopic procedures were performed in 65 patients. Before stents placement, the strictures were dilated by catheter or balloon (di-ameter range: 6-10 mm), or not dilated, according to the status of the bile ducts. An average of 3 (ranging from 2 to 6) plastic stents were placed with mean total size of 22.8 F (range 14-42 F), and the stents were kept for 8. 0 months on average (range 0.2-37.8 months). Of 90 procedures of stents placement, 54 (60%) were followed by stents removal and cholangiography, which confirmed stricture resolution in 26 (48.1%). The stricture resolution rate was 81.0% (17/21) in patients who underwent balloon dilation followed by more than 3 stents (> 21 F) for at least 3 months. Stricture re-occurred in 3 patients after stents removal, in whom stents were kept less than six months. Conclusion Endoscopic sequential intervention is effective for post-OLT biliary strictures according to the stage and grade. Radical dilation with maximal stenting can lead to complete resolution of AS. To achieve better result, if possible, balloon dilatation followed by three or mere endoprothe-ses (of at least 21 F) sustaining for more than 6 months is necessary.