Hepatitis C virus-positive donors in HCV-negative recipients in liver transplantation: Is it possible in Mexico?

Hepatitis C virus (HCV) infection is a worldwide public health problem associated with significant morbidity and mortality. In the context of liver transplantation, the demand for organs continues to exceed the supply, prompting the consideration of using organs from HCV-positive donors in HCV-negative recipients. The introduction of direct-acting antivirals (DAAs), which have demonstrated great efficacy in eradicating the virus, has made transplantation of organs from donors with HCV infection possible.

Measurement of linear accelerator spectra, reconstructed from percentage depth dose curves by neural networks.

Purpose Linear accelerator (linac) spectra, used to improve the accuracy of dose calculation and to produce a complete description of beam quality, among other aspects, are relevant in radiotherapy and linear accelerator physics. Methods In this work we apply neural networks in solving an ill-conditioned system of linear equations, to indirectly measure the linear accelerator spectra via the percentage depth dose curves. The photon beam spectra are related to radiation doses through a Fredholm integral equation.

A novel and fast methodology to calculate doses in LDR brachytherapy.

We present the concept of a new methodology for faster simulation of the doses in brachytherapy with permanent implants, based on the knowledge of the seeds arrangement, adding previously simulated doses in an equivalent medium in terms of the atomic composition of the organ in question. To perform the doses calculations we use Monte Carlo simulations. We simulated a cylindrical I-125 seed and compared our results against published data.

[Lymphocele surgical treatment in pediatric kidney transplantation].

Background: In a retrospective study, we evaluated; frequency, clinical presentation and treatment of lymphocele in pediatric patients with kidney transplant.

Methods: Between January 2004 and January 2009, we had 242 kidney transplantations, 197 from living donors and 45 from cadaveric donors. The technique was the usual, and the implants of the ureteres were by the technique Ricard modified.

[Sudden infant death syndrome (SIDS): identification of infants at risk and their home monitoring. Apropos of 25 cases].

The SIDS problem is an important medicosocial question therefore it is necessary to identify the high risk infants in order to try to avoid it. We discuss our two years experience in a Home Apnea Monitoring Program. This article includes the first 25 children on home monitoring: 13 infants.