Studies

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Challenges of an aging society

Dementia and gun ownership: an issue that needs regulation

In Sweden, there are over 2 million legally owned firearms. At the same time, up to 150,000 people live with a diagnosis of dementia. In an aging society such as Sweden, legislators will face challenges in gun ownership. A new registry-based observational study by researchers from NVS, Karolinska Institutet, published in the Journal of Alzheimer’s Disease shows a need for strategies for this…

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Covid-19 prevention side effects

Rare blood clots after Oxford-AstraZeneca vaccine: study sheds more light

A large study from Denmark and Norway published by The BMJ sheds more light on the risk of rare blood clots in adults receiving their first dose of the Oxford-AstraZeneca Covid-19 vaccine. The findings show slightly increased rates of vein blood clots including clots in the veins of the brain, compared with expected rates in the general population. However, the researchers stress that the risk of…

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Discerning good algorithms from bad ones

Medical AI evaluation is surprisingly patchy, study finds

In just the last two years, artificial intelligence has become embedded in scores of medical devices that offer advice to ER doctors, cardiologists, oncologists, and countless other health care providers. But how much do either regulators or doctors really know about the accuracy of these tools? A new study led by researchers at Stanford, some of whom are themselves developing devices, suggests…

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After overcoming a Corona infection

Covid-19: Study on long-term antibody protection

Does overcoming a SARS-CoV-2 infection protect against reinfection? The “Rhineland Study”, a population-based study conducted by DZNE in the Bonn area, is now providing new findings in this regard. Blood samples taken last year indicate that an important component of immunity – the levels of specific neutralizing antibodies against the coronavirus - had dropped in most of the study…

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Radiology research

Chest CT illuminates COPD mortality risk

Body composition information derived from routine chest CTs can provide important information on the overall health of people with chronic obstructive pulmonary disease (COPD), including their risk of all-cause mortality. This is the result of a new study, published in Radiology. COPD is a group of chronic, progressive lung diseases that affect about 30 million people in the United States alone.…

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Mammography support

AI solution may reduce interval breast cancer rates

Medical technology company iCAD, Inc. announced that ProFound AI for 2D Mammography might notably reduce the risk of interval breast cancer, according to a new retrospective analysis. The aim of the study was to determine if adding AI to reading mammography as a supportive tool may help in decreasing the interval cancer rate in population-based organized mammography screening programs in Germany.

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Study hints at increased risk

Many Covid-19 patients return to hospital within 140 days

People discharged from hospital after Covid-19 appear to have increased risks of diseases across multiple organs and nearly a third are readmitted to hospital in the following months, according to a new study co-led by researchers at University College London. The study, published in The BMJ, looked at nearly 50,000 people who were discharged from hospital by August last year and compared them to…

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Post-hospitalisation

New study reveals impact of 'Long Covid'

Recovery duration, co-morbidities, mortality, risk groups: A large study across multiple UK centres reports in detail on prospectively assessed outcomes of Covid-19, the so called 'Long Covid'. We spoke with two of the study's co-investigators about why so many patients are still affected after a coronavirus infection.

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Malignant brain tumor

Successful test for mutation-specific vaccine against diffuse gliomas

Tumor vaccines can help the body fight cancer. Mutations in the tumor genome often lead to protein changes that are typical of cancer. A vaccine can alert the patients' immune system to these mutated proteins. For the first time, physicians and cancer researchers from Heidelberg and Mannheim have now carried out a clinical trial to test a mutation-specific vaccine against malignant brain tumors.…

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Prevalence of depression and anxiety

Covid-19 pandemic impacts mental health worldwide, study finds

A study conducted by Columbia University Mailman School of Public Health researchers reports a high global prevalence of both depression and anxiety during the Covid-19 pandemic. It also shows how the implementation of mitigation strategies including public transportation and school closures, and stay-at-home orders impacted such disorders. Results are published in Psychological Medicine.

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Asymptomatic disease spread

Why vaccines alone may not be enough to end the Covid-19 pandemic

Even as vaccines are becoming more readily available, protecting against the asymptomatic and pre-symptomatic spread of the virus (SARS-CoV-2) that causes Covid-19 is key to ending the pandemic, say two infectious disease experts at the Georgetown University Medical Center. In their Perspective, “SARS-CoV-2 Transmission Without Symptoms,” published in the journal Science, they make the case…

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New study confirms

Covid-19 vaccines highly effective in nursing homes

In what is believed to be the first published study of Covid-19 vaccine effectiveness in long-term care facilities such as nursing homes, a research team co-led by the Yale School of Public Health found a widely used vaccine is highly successful in preventing infections. Residents of such facilities, particularly those in skilled nursing facilities (SNFs), have experienced disproportionately high…

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Delay in treatment for serious illness

Digital Covid-19 'symptom checkers' may do more harm than good

Digital Covid-19 ‘symptom checkers’ may stop some patients from getting prompt treatment for serious illness, suggests an international case simulation study. Both the US and UK symptom checkers consistently failed to identify the symptoms of severe Covid-19, bacterial pneumonia, and sepsis, frequently advising these cases to stay home, the findings indicate. The availability and use of…

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Evaluation of contact-free interaction model

Talking to a 'robotic doc'? Most patients wouldn't mind

In the era of social distancing, using robots for some health care interactions is a promising way to reduce in-person contact between health care workers and sick patients. However, a key question that needs to be answered is how patients will react to a robot entering the exam room. Researchers from MIT and Brigham and Women’s Hospital recently set out to answer that question. In a study…

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Superior in identifying cancers in symptomatic younger women

Breast cancer detection: advantage DBT

Digital breast tomosynthesis (DBT) increases detection of breast cancer in symptomatic women under the age of 60, especially in dense breasts. A large, multi-institutional study conducted in the United Kingdom comparing the sensitivity of full-field digital mammography (FFDM), DBT, and FFDM plus DBT supports findings of two similar published studies, both conducted in China in the same time frame.

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Myocarditis, infarction, ischaemia

Many Covid-19 patients leave hospital with heart damage

Around 50% of patients who have been hospitalised with severe Covid-19 and who show raised levels of a protein called troponin have damage to their hearts. The injury was detected by magnetic resonance imaging (MRI) scans at least a month after discharge, according to new findings published in the European Heart Journal. Damage includes inflammation of the heart muscle (myocarditis), scarring or…

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Study from Zambia shows many more deaths

Experts: Impact of Covid-19 in Africa “vastly underestimated”

The impact of Covid-19 in Africa has been vastly underestimated, warn researchers in a new study. Outside of South Africa, this is the first study to provide systematic surveillance data capturing the impact of Covid-19 in Africa. Their findings are based on polymerase chain reaction (PCR) test results for 364 deceased people of all ages at the University Teaching Hospital morgue in Lusaka,…

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Covid-19's impact on studies

Clinical trials during the pandemic: lessons for future cancer research

The continuing corona virus epidemic has impacted strongly on cancer care and research, including the delay of treatments and diagnoses as well as on trials of new therapies, and the shift in research to develop a Covid-19 vaccine. However, the session ‘Cancer research and Covid-19’, during the National Cancer Research Institute (NCRI) Virtual Showcase (online 2-3 November) looked at how UK…

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Measuring mitochondrial DNA

Rapid blood test identifies Covid-19 patients at high risk of severe disease

One of the most vexing aspects of the Covid-19 pandemic is doctors’ inability to predict which newly hospitalized patients will go on to develop severe disease, including complications that require the insertion of a breathing tube, kidney dialysis or other intensive care. Knowledge of a patient’s age and underlying medical conditions can help predict such outcomes, but there are still…

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Getting into shape

'Prehabilitation' to aid recovery after surgery for older patients

Older adults about to undergo elective surgery should undertake a sustained programme of targeted exercise beforehand to counteract the muscle-wasting effects of bedrest, new research suggests. A study published by researchers in the University of Birmingham’s School of Sport, Exercise and Rehabilitation Sciences showed that short term ‘prehabilitation’ strength exercises, undertaken…

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