[Experience in liver transplantation (1996-2011) at the UMAE, General Hospital Gaudencio González Garza, National Medical Center La Raza, Mexican Institute of Social Security, Mexico City, D.F]. / Experiencia en trasplante hepático (1996-2011) en la UMAE, Hospital General Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, México, D.F.

We present the experience of General Hospital CMN La Raza from 1996 to 2011. In this period, we have made 40 liver transplants in adults and 22 pediatric liver transplants. A 100% of adult population received a graft from deceased donor; while in the pediatric age group, 60% were from deceased donor and 40% from living donor. The long-term follow-up is shown only for adult group due to lack of data in the pediatric group. The mean age for the adult group is 42 years old and 4.5 years for the pediatric group. The main indications for liver transplantation in adults were: cirrhosis due to chronic hepatitis C in 47.5% and cirrhosis due to alcohol abuse in 15% of the group. In the pediatric group was more likely the biliary atresia (60%) as an indication for liver transplantation followed by fulminant hepatitis (15%). We show the evolution of the hepatectomy's technique in the adult group: it was initially using conventional technique and later it changed to preservation of cava vein (Piggy Back). In the same way, the reconstruction of the bile-duct was initially made using a T-tube stenting and currently, we use end to end bile-duct reconstruction. The patient's survival at 1, 5, and 10 years was 41.5, 27.2, and 13.6%, respectively; with a median of global survival of 6.2 months. Long-term patient's survival has improved after 2004 compared to previous period.

Biguanidas (metformin) y acidosis láctica. Reporte de un caso y revisión de la literatura / Biguanides (metformin) and lactic acidosis. case report

Introducción. El metformin puede desencadenar acidosis láctica en presencia de insuficiencia renal aguda. Objetivo. Reportar un caso de acidosis láctica secundaria a metformin en presencia de función renal normal. Reporte del caso. Un paciente de 45 años de edad con historia de diabetes mellitus no insulino-dependiente, tipo 2, ingresó a una ICU. Tenía vómito y debilidad después de 13 días de tratamiento con metformin (2,000 mg/d). Al ingreso tenía TA 80/40, FC 110/min. FR 32/min. Laboratorio: pH 6.77, PaCO2 10mmHg, PaO2 300 mmHg, glucosa 79 mg/dL, urea 191 mg/dL, creatinina 9.5 mg/dL, ácido láctico 34 mmol/L. Se realizaron maniobras enérgicas que incluyeron ventilación mecánica, administración de líquidos y diálisis peritoneal; se recuperó rápidamente y se dio de alta a su domicilio cinco días depués