Current Asymptomatic Carotid Stenosis News and Events

Current Asymptomatic Carotid Stenosis News and Events, Asymptomatic Carotid Stenosis News Articles.
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Machine learning method identifies precancerous colon polyps
A machine learning algorithm helps accurately differentiate benign and premalignant colorectal polyps on CT colonography scans, according to a new study. (2021-02-23)

The Lancet: 3-month interval between first and second dose of Oxford COVID-19 vaccine results in higher vaccine efficacy than 6-week interval
* Exploratory analyses including 17,178 participants find that higher vaccine efficacy is obtained with a longer interval between the first and second standard dose (81% for 3-month interval vs 55% for up to 6-week interval). In addition, a single dose of vaccine is highly efficacious in the first 3 months (76% efficacy from 22 days after vaccination onwards). (2021-02-19)

Radiomics shows cocaine fuels coronary artery disease risk
Radiomics--the extraction of very detailed quantitative features from medical images--provides a refined understanding of how cocaine use and other risk factors affect the course of coronary artery disease, according to a new study. Researchers said the study shows the power of radiomics to improve understanding of not just cardiovascular disease, but cancer and other conditions as well. (2021-02-16)

Spanish scientists uncover early links between cardiovascular risk and brain metabolism
Investigators at the CNIC have discovered a link between brain metabolism, cardiovascular risk, and atherosclerosis during middle age, years before symptoms appear (2021-02-15)

Mid-life cardiovascular disease prevention may protect against later dementia
Employing cardiovascular disease prevention strategies in mid-life may delay or stop the brain alterations that can lead to dementia later in life, according to a study in the Journal of the American College of Cardiology. (2021-02-15)

New insight into antibody-induced protective immunity to COVID-19
Researchers at the Ragon Institute of MGH, MIT and Harvard and the Brigham and Women's Hospital collaborate with SpaceX to identify humoral immune features which may track with lasting protection against SARS-CoV-2. (2021-02-15)

SARS-CoV-2 screening using CRISPR-based methods
This observational study assessed CRISPR-based methods for screening to detect SARS-CoV-2 among asymptomatic college students. (2021-02-11)

At least 50% of COVID-19 infections come from people who aren't showing symptoms
A new study out of the University of Chicago has found that during the initial wave of the COVID-19 outbreak in New York City, only 1 in 5 to 1 in 7 cases of the virus was symptomatic. The research team found that non-symptomatic cases substantially contribute to community transmission, making up at least 50% of the driving force of SARS-CoV-2 infection. (2021-02-11)

Making good decisions about COVID-19
In their article, Rode and Fischbeck note that many of the key decisions facing individuals, corporations and governments all depend on two basic values: the probability a person has the virus and the probability that person transmits the virus. (2021-02-09)

X-Stop® vs Laminectomy for lumbar spinal stenosis: Quality of life and cost-effectiveness
A randomized controlled trial of the X-Stop® interspinous distractor device and open laminectomy in patients with lumbar spinal stenosis. Both procedures improved the patients' quality of life; however, overall, laminectomy gave patients a better quality of life and was also more cost-effective. (2021-02-02)

Asymptomatic SARS-CoV-2 infections among people entering China
Researchers assessed the proportion of international entrants to China with asymptomatic SARS-CoV-2 infection. Since April, people entering China via air, sea or land have been mandatorily tested for SARS-CoV-2 infection by PCR test at border checkpoints. Those who have tested positive have been hospitalized in isolation and those who have tested negative have been quarantined for 14 days at centralized facilities and then retested on day 13. (2021-02-02)

USPSTF recommends against screening for asymptomatic carotid artery stenosis in general population
The U.S. Preventive Services Task Force (USPSTF) recommends against screening for asymptomatic carotid artery stenosis in the general adult population. Carotid artery stenosis is the narrowing of arteries that supply blood to the brain. This recommendation applies to adults without a history of transient ischemic attack, stroke or other neurologic signs or symptoms related to the carotid arteries. (2021-02-02)

First study to look at potency of maternal antibodies
In a new study to be presented today at the Society for Maternal-Fetal Medicine's (SMFM) annual meeting, The Pregnancy Meeting™, researchers will unveil findings that suggest that women who contract COVID-19 during pregnancy are able to make antibodies, but that transfer of these antibodies to their infants is less than expected. (2021-01-28)

New research finds severity of COVID-19 determines likelihood of pregnancy complications
Researchers will unveil findings that suggest that pregnant women who become severely or critically ill due to COVID-19 are at greater risk of dying and experiencing serious pregnancy complications compared to pregnant women who have COVID-19 but were asymptomatic, or without symptoms. In contrast, pregnant women with mild or moderate illness were not at higher risk of pregnancy complications than those without symptoms. (2021-01-28)

Screening asymptomatic health care personnel for COVID-19 not recommended by experts
Routine screening of asymptomatic health care personnel in the absence of confirmed exposures to COVID-19 is not a recommended strategy for preventing transmission of COVID-19, according to a new review. It found that such testing is unlikely to affect the transmission of SARS-CoV-2 in health care settings and could even have unintended negative consequences. (2021-01-28)

RUDN University and RLT scientists: Light, magnetic field, and ultrasound could help fight COVID-19
A team of researchers from RUDN University and RLT suggested restoring normal levels of lymphocytes in patients with COVID-19 and other viral diseases by subjecting them to the combined influence of light, magnetic field, and ultrasound. (2021-01-18)

Breathing easier with a better tracheal stent
New research led by the University of Pittsburgh is poised to drastically improve the use of tracheal stents for children with airway obstruction. Researchers demonstrate for the first time the successful use of a completely biodegradable magnesium-alloy tracheal stent that safely degrades and does not require removal. (2021-01-15)

SARS-CoV-2 transmission from people without COVID-19 symptoms
Under a range of assumptions of presymptomatic transmission and transmission from individuals with infection who never develop symptoms, the model presented here estimated that more than half of transmission comes from asymptomatic individuals. (2021-01-07)

COVID-19 likely lingered longer than reported in Wuhan
Wuhan City in China was the first place to report COVID-19 in the world and--between December 2019 and May 2020--caused nearly two-thirds of all COVID-19 cases in China. Now, researchers reporting in PLOS Neglected Tropical Diseases have tested more than 60,000 healthy individuals in China for SARS-CoV-2 antibodies and concluded that thousands of Wuhan residents were infected with asymptomatic cases of COVID-19 after the infection was believed to be under control in China. (2021-01-07)

A prognostic Alzheimer's disease blood test in the symptom-free stage
Using a blood test, a German-Dutch research team has predicted the risk of Alzheimer's disease in people who were clinically diagnosed as not having Alzheimer's disease but who perceived themselves as cognitively impaired (Subjective Cognitive Declined, SCD). The researchers analyzed blood samples from an SCD cohort supervised at the Alzheimer Center Amsterdam. Using a test developed in Bochum, they identified all 22 subjects at study entry who developed Alzheimer's dementia, thus the clinical symptoms, within six years. (2021-01-06)

COVID-19 generally 'mild' in young children: Evidence review
Babies and asymptomatic cases account for up to half of COVID-19 infections in the under-five age group, which has implications for vaccination programs, a new UNSW study has found. (2021-01-05)

An explanation for the lack of blood oxygenation detected in many COVID-19 patients
Researchers at the Seville Institute of Biomedicine (IBIS) describe the presence in the human carotid body, the organ that senses oxygen in the blood, of the protein (ECA2) through which SARS-CoV-2 infects cells. (2020-12-29)

Neurologists say there is no medical justification for police use of neck restraints
A number of Americans have died during encounters with police officers who used chokeholds and other forms of neck restraint. Neurologist argue that some police departments justify use of these tactics with misleading language and that the use of neck restraints has no medical justification. (2020-12-28)

Two-year study details dynamics of Huntington's disease markers in patients
A new two-year longitudinal study reveals how two proteins linked to Huntington's disease - an incurable neurodegenerative disorder - change over time in patients and in as-yet asymptomatic people who carry a mutation that causes the condition. (2020-12-16)

COVID-19 does not damage auditory system, Tel Aviv University study finds
Since the beginning of the COVID-19 pandemic, there have been reports in the professional literature on possible hearing loss caused by the disease. A new study from Tel Aviv University (TAU), in collaboration with the Galilee Medical Center, finds no evidence of damage to the auditory system as a result of COVID-19 infection. (2020-12-15)

Wearable sensor may signal you're developing COVID-19 - even if your symptoms are subtle
A smart ring that generates continuous temperature data may foreshadow COVID-19, even in cases when infection is not suspected. The device, which may be a better illness indicator than a thermometer, could lead to earlier isolation and testing, curbing the spread of infectious diseases, according to a preliminary study led by UC San Francisco and UC San Diego. (2020-12-14)

A smart ring shows it's possible to detect fever before you feel it
Advance could pave the way for early warning system on COVID-19 and flu using wearables. (2020-12-14)

Majority of pregnant women who tested positive for COVID-19 were asymptomatic, study finds
Illustrates how pandemic disproportionally impacted vulnerable populations and underserved communities (2020-12-11)

Insufficient screening for heart damage after noncardiac surgery puts patients at risk
About five percent of patients experience heart muscle injury around the time of their surgery for a noncardiac condition, yet guideline recommendations to identify patients at risk using biomarkers are not being followed. A five-year study in Alberta, Canada appearing in the Canadian Journal of Cardiology, published by Elsevier, determined that the recommended biomarker screening is very much underutilized. (2020-12-10)

First peer-reviewed results of phase 3 human trials of Oxford vaccine show efficacy
Wits University scientists were amongst the co-authors who published the first peer-reviewed results of phase 3 human trials of the Oxford/AstraZeneca Covid-19 vaccine, in prestigious scientific journal The Lancet, on 8 December. Wits leads the SA leg of the Oxford Covid-19 vaccine trials. (2020-12-09)

New longitudinal study documents antibody responses to COVID-19 5 months after symptom onset
A new 5-month longitudinal analysis of 254 COVID-19 patients who displayed a wide range of disease severity - from asymptomatic to deadly illness - suggests that IgA and IgM antibodies to the SARS-CoV-2 virus disappear quickly during convalescence. (2020-12-07)

Comparison of coronavirus antibody tests revealed too optimistic claims
A study by University of Tartu researchers indicates that the sensitivity of tests used to detect viral antibodies in a blood sample may differ significantly. The combination of several tests may give the best result. (2020-12-03)

CNIC scientists identify a new diagnostic and therapeutic target for cardiovascular disease
Scientists at the Centro Nacional de Investigaciones Cardiovasculares (CNIC) have identified a mitochondrial protein as a potential marker for the diagnosis of cardiovascular disease (CVD) and as a possible target for future treatments. The study is published today in the journal Nature. (2020-12-02)

COVID-19 studies should also focus on mucosal immunity, researchers argue
More COVID-19 studies should be devoted to how immunity emerges to SARS-CoV-2 in the mucous membranes of the nose and mouth, a new paper argues. (2020-11-30)

More than one-third of children with COVID-19 show no symptoms: study
More than one-third of kids who have COVID-19 aren't showing symptoms, according to a University of Alberta study that suggests youngsters diagnosed with the disease may represent just a fraction of those infected. (2020-11-30)

Liver cirrhosis: Disease progression
Patients with liver cirrhosis display a wide range of clinical symptoms. A prospective study conducted by MedUni Vienna has now shown that blood levels of biomarkers for systemic inflammation increase over the various stages of the disease and can predict the development of complications, even in previously asymptomatic patients. (2020-11-30)

Wuhan mass screening identifies hundreds of asymptomatic cases
A mass screening programme of 10 million Wuhan residents identified 300 asymptomatic cases in May, but none were infectious - according to a new study. They found no 'viable' virus in the asymptomatic cases and the close contacts of these positive asymptomatic cases did not test positive. But these findings do not show that the virus can't be passed on by asymptomatic carriers. Rather mask-wearing, hand washing, social distancing and lockdown have helped reduce Covid-19 virulence. (2020-11-30)

Scoring system improves screening for "dual" heart disease
Aortic stenosis is one of the most common heart valve defects. As well as conventional valve replacement involving open-heart surgery, a less invasive procedure has now been available for some time in the form of transcatheter aortic valve replacement (TAVR). (2020-11-24)

Antibodies to SARS-CoV-2 are detected up to 3 months after infection
The follow-up study in health care workers of the Hospital Clinic de Barcelona hopes to provide information on the duration of different antibodies to SARS-CoV-2 and their role in protecting from disease and reinfection (2020-11-20)

Biofriendly protocells pump up blood vessels
In a new study published today in Nature Chemistry, Professor Stephen Mann and Dr Mei Li from Bristol's School of Chemistry, together with Associate Professor Jianbo Liu and colleagues at Hunan University and Central South University in China, prepared synthetic protocells coated in red blood cell fragments for use as nitric oxide generating bio-bots within blood vessels. (2020-11-20)

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