Tag Archives: control

Medical assessment in the blink of an eye

There are many routes to making snap judgments (not all of them particularly useful). One of these is our ability to get the "gist" of an entire image by analyzing the whole scene at once, based on interpretation of global properties and image statistics, not focusing on specific details.That seems to be what medical experts can do. They are not perfect in a fraction of a second but they do far better than random guessing when classifying medical images as normal or abnormal even though, in that blink of an eye, they cannot tell you where the problem might be located. …

FDA urges protection of medical devices from cyber threats

The U.S. Food and Drug Administration on Thursday urged medical device makers and medical facilities to upgrade security protections to protect against potential cyber threats that could compromise the devices or patient privacy. It released that advisory in coordination with a separate alert from the Department of Homeland Security, which disclosed vulnerability in a wide variety of medical equipment that can make those devices vulnerable to remote attacks from hackers. “Over the past year, we've become increasingly aware of cyber security vulnerabilities in incidents that have been reported to us,” William Maisel, deputy director for science at the FDA's Center for Devices and Radiological Health, said in an interview. “Hundreds of medical devices have been affected, involving dozens of manufacturers,” Maisel said, adding that many were infected by malicious software, or malware. But he said all the infections appeared to be unintentional, largely due to malware and computer viruses that were circulating in hospital computer networks and jumped onto the devices. An alert published on the government's Industrial Control Systems Cyber Emergency Response Team website, cited research from Billy Rios and Terry McCorkle of the cyber security firm Cylance Inc, who said they have identified more than 300 pieces of medical equipment that are vulnerable to cyber attack. They include surgical and anesthesia devices, ventilators, drug infusion pumps, patient monitors and external defibrillators. The problem with the equipment is that it can be controlled using default passwords that can be obtained with relative ease by motivated hackers, Rios said in an interview. Those passwords give their holders complete control of the devices and in some cases can be used to gain that access remotely via the Internet, he said. “Somebody could take over the device and make it do whatever they want it to do and it would be almost impossible for hospital staff to know that it had been tampered with,” Rios said. Rios and McCorkle are among a group of security experts who in recent years have suggested that medical devices such as insulin pumps and pacemakers could be vulnerable to hacking. The FDA on Thursday said it is not aware of any patient injuries or deaths associated with devices and hospital computer networks that have been infected with malware and computer viruses. In an advisory on its website, however, the FDA said manufacturers, hospitals and patients need to protect themselves better from the introduction of malware in medical equipment and unauthorized access to settings that control devices. “Many medical devices contain configurable embedded computer systems that can be vulnerable to cybersecurity breaches,” the agency said. The risk of breaches has grown as devices have become increasingly interconnected, via the Internet, hospital networks, other medical devices and smartphones, the FDA said. “Specifically we recommend that manufacturers review their cybersecurity practices and policies to assure that appropriate safeguards are in place to prevent unauthorized access or modification to their medical devices or compromise of the security of the hospital network that may be connected to the device,” the agency said. Among its recommendations, the FDA said manufacturers need to take steps to limit unauthorized device access to trusted users only, particularly for devices that are “life sustaining” or could be directly connected to hospital networks. User IDs, passwords and other security controls need to be strengthened, including potential use of biometrics, the agency said. Moreover, manufacturers need to assure that devices recover and continue to work once security has been compromised. “Cybersecurity incidents are increasingly likely,” the FDA said, “and manufacturers should consider incident response plans that address the possibility of degraded operation and efficient restoration and recovery.” The FDA also urged health care facilities to evaluate their network security, including restricting unauthorized access to the network and networked devices.source : http://www.foxnews.com/health/2013/06/14/fda-urges-protection-medical-devices-from-cyber-threats/

Scientists say new study shows pig health hurt by GMO feed

Pigs fed a diet of only genetically modified grain showed markedly higher stomach inflammation than pigs who dined on conventional feed, according to a new study by a team of Australian scientists and U.S. researchers. The study adds to an intensifying public debate over the impact of genetically modified crops, which are widely used by U.S. and Latin American farmers and in many other countries around the world. The study was published in the June issue of the peer-reviewed Journal of Organic Systems by researchers from Australia who worked with two veterinarians and a farmer in Iowa to study the U.S. pigs. Lead researcher Judy Carman is an epidemiologist and biochemist and director of the Institute of Health and Environmental Research in Adelaide, Australia. The study was conducted over 22.7 weeks using 168 newly weaned pigs in a commercial U.S. piggery. One group of 84 ate a diet that incorporated genetically modified (GM) soy and corn, and the other group of 84 pigs ate an equivalent non-GM diet. The corn and soy feed was obtained from commercial suppliers, the study said, and the pigs were reared under identical housing and feeding conditions. The pigs were then slaughtered roughly five months later and autopsied by veterinarians who were not informed which pigs were fed on the GM diet and which were from the control group. Researchers said there were no differences seen between pigs fed the GM and non-GM diets for feed intake, weight gain, mortality, and routine blood biochemistry measurements. But those pigs that ate the GM diet had a higher rate of severe stomach inflammation - 32 percent of GM-fed pigs compared to 12 percent of non-GM-fed pigs. The inflammation was worse in GM-fed males compared to non-GM fed males by a factor of 4.0, and GM-fed females compared to non-GM-fed females by a factor of 2.2. As well, GM-fed pigs had uteri that were 25 percent heavier than non-GM fed pigs, the study said. The researchers said more long-term animal feeding studies need to be done. Biotech seeds are genetically altered to grow into plants that tolerate treatments of herbicide and resist pests, making producing crops easier for farmers. Some critics have argued for years that the DNA changes made to the transgenic plants engineer novel proteins that can be causing the digestive problems in animals and possibly in humans. The companies that develop these transgenic crops, using DNA from other bacteria and other species, assert they are more than proven safe over their use since 1996. CropLife International, a global federation representing the plant science industry, said more than 150 scientific studies have been done on animals fed biotech crops and to date, there is no scientific evidence of any detrimental impact.source : http://www.foxnews.com/health/2013/06/12/scientists-say-new-study-shows-pig-health-hurt-by-gmo-feed/

Woman claims berries bought at Costco gave her Hepatitis A, sues manufacturer

A woman is suing after she says she got Hepatitis A from eating Townsend Farms frozen berries she bought at Costco, according to My Fox Phoenix.  The lawsuit was filed against berry maker Townsend Farms on Thursday. The woman, who lives in Anthem, Ariz., can't remember which Costco she bought the berries at. She's worked at the same place for 10 years and says she's never called in sick. Now she's at risk of losing her job and her degree as her medical bills are mounting. “I mean if I don't have a job, I don't have a degree, what do I have? Hepatitis A,” said Karen Echard. Echard says she got Hepatitis A from eating Townsend Farms Organic Antioxidant Blend Frozen Berry and Pomegranate Mix she bought at Costco in April. According to the Centers for Disease Control, 79 people in eight states have Hepatitis A infections potentially associated with the frozen berry mix; 30 were hospitalized. Hepatitis A is a contagious liver disease that can last a few weeks to several months. “They said it's anywhere from six weeks to six months for recovery with as bad a case as I have,” said Echard. The CDC says Costco removed the item from its shelves.Townsend Farms voluntarily recalled the item. Click for more from My Fox Phoenix. source : http://www.foxnews.com/health/2013/06/10/woman-claims-frozen-costco-berries-gave-her-hepatitis-sues-manufacturer/

Nearly 40 percent of designated drivers drink before driving, study suggests

Partygoers, beware.  Your designated sober driver may not always be alcohol-free. A new study, conducted in a Florida college town, found that two out of five designated drivers drink alcohol before getting behind the wheel, Medical Daily reported.  Of these inebriated drivers, half had a blood alcohol content (BAC) of .05 percent – enough to affect driving ability while still being under the legal limit. Researchers from the University of Florida spent three months observing more than 1,000 bar patrons as they left drinking establishments throughout the college town of Gainesville, Fla.  The team asked people if they had been deemed the designated driver and whether they would volunteer to take a breathalyzer test before leaving. Throughout the course of the study, 165 individuals identified themselves as designated drivers.  Of this group, 35 percent had at least one drink before leaving the bar, and around half of the drinkers had a BAC between .02 and .05 percent.  The other half had a BAC above .05 percent. According to the study’s researchers, social pressure to drink in combination with a legal BAC limit of .08 percent often leads to designated drivers having one or two drinks before hitting the road.  However, the scientists maintained that numerous studies have documented significant alcohol-related impairment at a BAC level of .05 percent. “Considering the low BAC levels at which driving-related abilities are negatively affected, these ï¬�ndings identify the need for consensus across researcher, layperson, and communication campaigns that a (designated driver) must be someone who abstains from drinking entirely,” the researchers wrote. Nearly one-third of all traffic-related deaths in the United Sates involve alcohol-impaired drivers, resulting in nearly 11,000 deaths each year, according to the Centers for Disease Control and Prevention (CDC).  In an attempt to curb these deaths, the National Highway Transportation Safety Board has recommended that the legal BAC limit for driving be reduced from .08 percent to .05 percent. The University of Florida study will be published in the July issue of The Journal of Studies on Alcohol and Drugs.  However, the average age of study participants was 28 and the individuals tested were not ethnically or racially diverse, meaning the results cannot be applied to the general American population. Click for more from Medical Daily.source : http://www.foxnews.com/health/2013/06/10/nearly-40-percent-designated-drivers-drink-before-driving-study-suggests/