Overt and occult hepatitis B among immigrants and native blood donors in Madrid, Spain.

Background: The risk of transfusion-transmitted viral infections is very low in developed countries. Recent massive migration flows from highly hepatitis B virus (HBV), hepatitis C virus (HCV) and/or HIV endemic regions to Europe may have changed this scenario.

Methods: During 2017 and 2018, a total of 491,753 blood donations (291,762 donors) were evaluated at the Madrid Regional Transfusion Center.

Finite element comparison of the effect of absorbers' design in the surrounding bone of dental implants.

Despite the high success rate achieved in current dental implantation, there are still important problems to solve like incomplete early osteointegration, bone damage, and long-term implant loosening. Highly compliant stress absorbers are a possible solution to these problems. Although several works examined the stress-strain distribution in bone without and with absorbers to show their favorable results, none of them analyzed their impact on long-term remodeling.

[Reversal of acenocoumarol anticoagulation with activated factor VII in massive hemorrhage following rupture of a splenic artery pseudoaneurysm].

A 66-year-old man with a metallic valve and under treatment with acenocoumarol developed hypovolemic shock after rupture of a splenic artery pseudoaneurysm. We managed to reverse anticoagulation within 60 minutes by administering 20 mg of vitamin K and 4.8 mg of activated recombinant factor VII.