Using hepatitis C and B virus-infected donor organs for pediatric heart transplantation.

OBJECTIVE: High-risk donors for patients with end-stage cardiac or pulmonary disease awaiting transplantation represent an opportunity for access to more organs and therefore can significantly decrease the waiting list mortality. The objective of this study is to investigate the use of hepatitis B virus core antibody positive or hepatitis C virus seropositive donors for pediatric heart transplantation. METHODS: Data were reviewed from the United Network of Organ Sharing database (June 2008 to June 2015). A total of 3 hepatitis C seropositive and 9 hepatitis B core antibody positive donor hearts were identified for transplantation. Factors of age, underlying diagnosis, transplant year, extracorporeal membrane oxygenation, inotrope support, hepatitis C virus serostatus, and hepatitis B virus surface antigen status were used for 2 separate propensity score models. Standardized difference was evaluated for these variables before and after match. Survival was compared between the matched cohorts. RESULTS: Post-transplant graft survivals for recipients of hepatitis C virus positive donors and hepatitis B virus core antibody positive donors were similar to matched recipients of hepatitis C virus negative and hepatitis B virus core antibody negative donors, respectively. CONCLUSIONS: The study has a small cohort to derive any significant conclusions, but the results are encouraging and consistent with the current trends among adult thoracic and pediatric kidney transplantation and demonstrates that hepatitis C virus positive and hepatitis B virus core antibody positive donors are not often used for pediatric heart transplantation.

Trends in antimicrobial resistance in Shigella species in Karachi, Pakistan.

BACKGROUND: Shigellosis is a common cause of morbidity, especially in the very young and old, in developing countries. The disease is treated with antibiotics. Surveillance of antimicrobial resistance trends is essential owing to the global emergence of antimicrobial resistance. METHODOLOGY: The study involved 1,573 isolates of Shigella species (1996-2007) that were analyzed for trends in antimicrobial resistance. RESULTS: The majority of the specimens (1046; 66.5%) were from the pediatric population, and of these 887 (84.8%) were under 5 years of age (p = 0.001). S. flexineri was the most frequent species (54.5%) isolated. Isolation of S. sonnei increased from 15.4 % (1996) to 39% (2007) (p = 0.001). Although none of the isolates was found sensitive to all the antibiotics tested, 58% (n =9 07) were resistant to ampicillin and 85% (n = 1,338) were resistant to trimethoprim-sulfamethoxazole (TMP-SMX). Out of a total of 198 (12.6%) nalidixic acid resistant isolates, 6 (3.0%) were also resistant to ofloxacin. Overall 1.7 % of isolates were resistant to ofloxacin, 2.4% to ceftriaxone and 2.3% were resistant to combination of ampicillin, nalidixic acid and TMP-SMX. CONCLUSION: Ofloxacin is still an effective drug for treatment of acute shigellosis in Pakistan. Emergence of resistance to ceftriaxone in Shigella may have grave implications in treatment of severe shigellosis in very young patients.