33% of heart surgery devices could be contaminated with deadly bacteria – MassDevice stat : Massdevice

Some devices remained positive for M. chimera for months, indicating that disinfection can be difficult and routine testing is advisable. "Our results showed M. chimera in 37% of units tested and is consistent with previous findings. A total of 37% of the units tested positive for M. chimaera, while 4 units were found to be colonized with Legionella, according to the report. "These results highlight the importance of monitoring the decontamination and maintenance schedules of these devices to minimize the risk of patient harm. Beyond M. chimera, we found other NTM species, Legionella, and fungi, indicating these units are capable of supporting a diverse microbial population," Rihs said in a press release.




Light-activated bacteria protect rats from heart attacksWhen a heart attack strikes, blood stops flowing to parts of the heart, starving the tissue of oxygen and killing cardiac cells. Forty-five minutes after the heart attack, the hearts of the bacteria-laced rats pumped about 60% more blood than did rats that also had heart attacks but were not given the bacteria, and 30% more blood than rats that were infected with the bacteria but left in the dark. A new study with rats suggests an innovative way to do that: infecting the heart with photosynthesizing bacteria that naturally produce oxygen when exposed to light. The technique was effective at preserving cardiac function in the rodents, yet experts note there are significant obstacles to implementing it as a human therapy. They left the heart exposed to the laboratory's natural light and the bacteria went to work, resulting in a 25-fold increase in the tissue's oxygen levels 10 minutes after the heart attack.

These light-eating bacteria could one day help us survive heart attacks

Often, heart attacks are caused by blockages in the blood vessels that supply oxygen-rich blood to the heart, which makes the heart muscle die. Heart attacks occur when oxygen is blocked from getting to crucial heart muscles — but that might be something that can be helped with bacteria. By using bacteria that "eat" light to produce oxygen, researchers were able to provide extra oxygen to rats having heart attacks. In today's study, rats undergoing heart attacks had the bacteria injected into their hearts. The brand-new technique has the potential to one day help humans survive when blood flow to the heart is interrupted.


collected by :Lucy William

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