The Ross procedure is a double-valve operation using the patient’s pulmonary valve as an autograft to replace the damaged aortic valve, with pulmonary donor tissue used to reconstruct the continuity of right ventricular outflow and the pulmonary artery. It is most often performed in children, with good long-term results, and several recent studies including a 2018 systematic review and meta-analysis found clear benefits for the surgical procedure in selected young and middle-aged patients.
“This study shows that the Ross procedure is an operation with potentially significant value in terms of survival and quality of life in young and middle-aged adults,” Romeo and colleagues wrote.
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Feb. 25, 2021 , 4:05 PM
Hackers published a batch of internal documents from the Netherlands Organisation for Scientific Research (NWO) on the dark web yesterday, after the agency refused to pay up in a ransomware attack. The attack, which began on 8 February, has completely knocked out the agency’s grant application and review process and cut off NWO’s communication with applicants, grantees, and universities.
Ransomware attacks on organizations, companies, and even hospitals have become increasingly common, and some institutions have decided that paying is the easiest way to get computer systems back up or prevent the release of confidential data. NWO refused to do so. “On fundamental grounds, NWO, as part of the Dutch governmental institutions, isn’t willing to pay ransom,” the agency said in a statement yesterday. “Although NWO highly regrets the unfortunate situation of sensitive personnel documents being spread … NWO will not alter its position.” The funder sa
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IMAGE: This photo shows Konkoly watching brain signals from a sleeping participant in the lab. Researchers are working to expand and refine two-way communications with sleeping people so more complex conversations. view more
Credit: K. Konkoly
Dreams take us to what feels like a different reality. They also happen while we re fast asleep. So, you might not expect that a person in the midst of a vivid dream would be able to perceive questions and provide answers to them. But a new study reported in the journal
Current Biology on February 18 shows that, in fact, they can. We found that individuals in REM sleep can interact with an experimenter and engage in real-time communication, said senior author Ken Paller (@kap101) of Northwestern University. We also showed that dreamers are capable of comprehending questions, engaging in working-memory operations, and producing answers.