RICHARD E. PRESLEY, M.D.

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This study compared two methods for checking the correct placement of cochlear implants during surgery—TransImpedance Matrix (TIM) recordings and x-ray imaging. Out of 484 implant placements, only 13 had tip foldovers, which is a 2.7% rate. TIM recordings were highly accurate, accurately identifying all cases of foldovers (100% sensitivity) and having a 99.6% specificity compared to x-rays, suggesting that TIM could replace routine x-rays without risking patient safety. Who this helps: This helps patients receiving cochlear implants and the doctors performing the surgeries.

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Researchers updated a tool called the Minimum Speech Test Battery (MSTB), first introduced in 1996, to improve the assessment process for people considering cochlear implants (CIs) and those already using them. The new version, MSTB-3, recognizes new patient groups such as those with mixed hearing loss and provides clearer guidance on when to recommend a CI, including better patient feedback options and clinical documentation templates. This update is important as it ensures that more patients can benefit from targeted support and treatment, enhancing their hearing outcomes. Who this helps: This benefits patients with hearing loss, especially those who may not fit the traditional criteria for cochlear implants.

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This study looked at a protein called TAP2 that helps the immune system process antigens but is hindered by a herpes virus protein called ICP47. Researchers examined 1,786 variants of TAP2 and found 39 that could resist ICP47's effects. Among these, three specific variants (T257I, S274H, and T244R) were proven to be significantly resistant, meaning they could help the immune system work better against the herpes virus. Who this helps: This benefits patients dealing with herpes virus infections.

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This study looked at how a new computer-based approach called "Fitting to Outcome eXpert" (FOX) affects the performance of newly implanted cochlear implant patients. It found that patients using this method scored an average of 60.2% on word recognition tests six months after activation, which was a 46% improvement from their preimplant scores and comparable to scores from patients using traditional methods. Additionally, these patients had 43% fewer programming appointments, meaning they needed less frequent follow-up visits to adjust their devices. Who this helps: This helps patients with cochlear implants by improving their hearing outcomes and reducing the number of appointments they need.

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This study looked at a new tool called the Cochlear Implant Skills Review (CISR) to measure how well adults with cochlear implants know and use their devices. They tested 30 people, both new and experienced users, and found that the tool was very reliable, with an overall reliability score of 92.7%. The amount of time someone has used their cochlear implant significantly affected how well they performed on the CISR, helping identify areas where users may need more support. Who this helps: Patients with cochlear implants and the doctors who care for them.

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This study looked at how common bleeding in the brain (intracranial hemorrhage or ICH) is in young children with bleeding disorders like hemophilia and von Willebrand disease, especially when there's a history of trauma. Out of nearly 3,800 children, 255 had some form of ICH, with the highest rates found in those with severe hemophilia A (9.1%) and B (10.7%). This matters because it highlights that ICH is often linked to bleeding disorders rather than abuse, helping doctors make better decisions on diagnosing these conditions. Who this helps: This helps doctors and healthcare providers who treat young children with bleeding disorders.

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This study looked at how often serious problems called inhibitors develop in Hispanic boys with severe hemophilia A, a blood disorder. Researchers found that 24.5% of Hispanic patients had high levels of these inhibitors, compared to 16.4% of White patients. This is important because it highlights a greater risk for Hispanic patients and suggests that more specific treatments might be needed to help them manage their condition better. Who this helps: This helps patients with hemophilia A, especially those in the Hispanic community.

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This study looked at the serious problem of brain bleeding in people with hemophilia and how preventive treatments, called prophylaxis, can help. Out of over 10,000 hemophilia patients, 199 experienced brain bleeding, which is a rate of 390 incidents per 10,000 patient years, with 19.6% of these cases resulting in death. The research found that using prophylaxis significantly lowered the risk of brain bleeding for patients with severe hemophilia who did not have HIV or inhibitors, showing that preventive care can make a real difference. Who this helps: This information helps patients with hemophilia and their doctors make better treatment decisions.

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This study looked at how insurance coverage affects home therapy and preventive treatment for young boys and men with severe hemophilia. It found that 90% used home therapy and 78% were on a preventive treatment plan, but those with Medicaid or no insurance were less likely to use preventive treatment compared to those with private insurance. This matters because having the right insurance can significantly improve access to essential treatments, which can lead to better health outcomes. Who this helps: This helps patients with severe hemophilia and their families.

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This review focuses on how the head structure of chordates (a group of animals that includes humans) is organized in segments, similar to how the trunk is organized. It discusses evidence supporting this segmental organization, emphasizing that while there are conflicting views, many of these can be explained using better methods and understanding of embryonic development. The authors emphasize that the basic segmental structure of the head has remained largely unchanged throughout evolution, particularly in early chordate forms, and they encourage a fresh look at some older concepts in developmental biology. Who this helps: This helps researchers and scientists studying animal development and evolution.

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This study looked at factors that can predict death in patients hospitalized for an acute stroke, analyzing data from 1,477 patients across 34 hospitals in Georgia. The researchers found that 10% of these patients died while in the hospital, and key factors linked to higher mortality included older age, low Glasgow Coma Scale scores (which measure consciousness), and low levels of a protein called albumin in the blood. Identifying low albumin as a significant predictor gives doctors important information to help them treat and manage stroke patients more effectively. Who this helps: This helps doctors and healthcare providers working with stroke patients.

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This study examined data from 580 babies under the age of two who have haemophilia, focusing on when they were diagnosed and the types of bleeding they experienced. Researchers found that 75% of these infants were diagnosed within their first month of life, with circumcision being the most common cause of bleeding. Understanding these patterns can help improve treatment and management for these young patients. Who this helps: This research benefits infants with haemophilia and the healthcare providers caring for them.

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This study looked at the link between neighborhood poverty and the rates of end-stage renal disease (ESRD) among different racial groups in the Southeastern United States. Researchers found that higher neighborhood poverty levels led to increased rates of ESRD for both Black and white patients, but Black patients were at an even greater risk. For instance, as neighborhood poverty rose, the gap in ESRD rates widened between Blacks and whites, highlighting how difficult socioeconomic conditions impact health more severely for black individuals. Who this helps: This research helps patients and healthcare providers understand the impact of socioeconomic factors on health disparities.

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This study looked at how certain factors related to doctors and their communities affect the testing of blood sugar levels (HbA1c) in older patients with diabetes who hadn’t been tested in the previous year. It found that areas with more people on Medicaid or fewer doctors available didn't see as much improvement in testing over three years. Understanding these influences is important because better blood sugar testing can lead to better health outcomes and fewer complications for patients with diabetes. Who this helps: This helps patients with diabetes and their healthcare providers.

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This study looked at patients who arrived at the hospital quickly (within 2 hours) after showing signs of a stroke. Out of 409 patients, 172 (42%) got to the hospital early, and these early arrivers generally had more severe strokes, with a higher chance of dying while in the hospital (13% compared to 4% for those who arrived later) but also had a better chance of walking independently when leaving (55% versus 37% for later arrivals). Understanding these patterns can help doctors identify and treat stroke patients more effectively. Who this helps: This helps patients by improving stroke treatment strategies and outcomes.

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This study looked at Medicare patients with heart problems to see how common kidney disease was among them and how it affects their health. It found that about 60% of patients with heart failure and 52% of those who suffered a heart attack also had chronic kidney disease. Patients with kidney disease faced a much higher risk of being readmitted to the hospital, dying within a year after discharge, and progressing to end-stage renal disease—an extremely serious condition requiring dialysis or a kidney transplant. Who this helps: This research benefits patients with cardiovascular disease by highlighting the need for better kidney disease detection and management.

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This study looked at how chronic kidney disease (CKD) and anemia affect the chances of death in patients who have had a heart attack. Researchers found that 60% of patients had CKD, and as hemoglobin levels (measured by hematocrit) decreased, the risk of dying in the following year increased significantly, from 18.6% in patients with normal levels to 35.8% in those with very low levels. This is important because identifying and managing CKD and anemia in heart attack patients could save lives. Who this helps: This helps patients who have had a heart attack, as well as doctors treating them.

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This study looked at whether providing feedback to doctors about their patients' diabetes tests would lead to more regular monitoring of blood sugar levels in older adults on Medicare. The results showed that in areas where doctors received this feedback, the rate of blood sugar testing increased by 16.8%, compared to just 13.0% in areas without the feedback—a difference of 4%. This is important because better monitoring of diabetes can lead to fewer complications for patients. Who this helps: This helps patients with diabetes, especially older adults on Medicare.

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This study looked at how chronic kidney disease (CKD) and anemia affect the risk of death in older patients admitted to hospitals for heart failure. Researchers found that patients with CKD had a 44.9% death rate within one year, compared to 31.4% for those without CKD. Additionally, those with lower blood cell levels (hematocrit) had higher death rates, with 50% mortality for patients with hematocrit levels below 30%. These findings highlight that both CKD and anemia are common and serious problems in heart failure patients that can directly increase their risk of death. Who this helps: This helps patients with heart failure, their families, and healthcare providers.

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This study looked at the Mll gene in mice, specifically how changes to this gene affect early embryo development. Researchers found that embryos with two copies of the altered Mll gene died before the two-cell stage, indicating that this gene is crucial for the embryos' survival during early development. Heterozygous embryos (those with one normal and one altered gene) showed mild skeletal and brain-related issues, highlighting the gene's importance in normal growth. Who this helps: This information benefits researchers and doctors studying developmental genetics and related birth defects.

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This study looked at mice that were genetically altered to lack the Dlx5 gene and found that these mice had significant issues with the formation of their faces and skulls, including problems with their ears and noses. About 28% of these mice had a severe brain condition called exencephaly, and most died shortly after birth. The findings highlight the importance of the Dlx5 gene in proper facial and skull development, which can help understand similar conditions in humans. Who this helps: This research benefits scientists and doctors studying craniofacial disorders.

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This study looked at whether teaching women in Shanghai to do breast self-examinations helps reduce deaths from breast cancer. About 267,000 women were divided into two groups: one group learned how to do self-exams, while the other group received training on preventing back pain. After a few years, both groups found similar numbers of breast cancers (331 vs. 322) and had the same mortality rates from breast cancer, showing that self-examination didn't significantly impact survival or stage of diagnosis. Who this helps: This research informs doctors and health organizations about the effectiveness of breast self-examination for women’s health.

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Researchers studied the roles of Dlx-1 and Dlx-2 genes in the development of certain structures in the heads of mice. They found that mutations in these genes lead to various issues, such as missing teeth and abnormal bone structures, particularly affecting the upper jaw area. This work helps us understand how these genes contribute to normal head development, which could provide insights into certain birth defects in humans. Who this helps: This helps patients with craniofacial abnormalities and the doctors who treat them.

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This study investigated the use of brain imaging to identify children with developmental dyslexia, attention deficit hyperactivity disorder (ADHD), and those without these conditions. Researchers looked at brain shapes and sizes from MRI scans, finding they could classify the groups with about 87% accuracy if they used both brain measurements and the child's age. This research is important because it highlights how brain structure can help distinguish between these disorders, improving diagnosis and treatment. Who this helps: This helps doctors and clinicians working with children diagnosed with dyslexia or ADHD.

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This study looked at how family practice residency programs in the U.S. market themselves to attract patients. Out of 361 programs surveyed, 151 responded, showing that the most effective marketing methods included getting listed with Health Maintenance Organizations (HMOs), referrals from emergency departments, and patient recommendations. On the other hand, hosting health fairs, offering sports physicals, and school presentations were found to be less effective. Who this helps: This helps family practice residency programs improve their patient outreach efforts.

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This study looked at how to measure the different temperaments of preschool children by analyzing ratings from parents and teachers. The researchers found that the best way to categorize these temperaments was into five groups based on parent ratings and three groups based on teacher ratings. Understanding these temperaments is important because it helps identify how children's personalities develop and can guide parents and educators in supporting their emotional growth. Who this helps: This benefits parents and teachers of preschool children.

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This study looked at how the early head structure develops in different types of lower vertebrate embryos. Researchers found that a specific area of the head, called the premandibular segment, shows a consistent pattern of development across various species, despite some differences in appearance. Understanding these development patterns is important because it helps clarify how complex head structures evolved and can improve our knowledge of vertebrate anatomy. Who this helps: This benefits researchers and medical professionals studying vertebrate development and evolution.

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This study looked at how two types of pain relief medications, morphine and U-50,488, affect pain in rats caused by a painful substance. Researchers found that both drugs reduced pain behaviors and the number of active neurons in the spinal cord and brain regions related to pain, but morphine had a stronger effect on brain neurons. Specifically, morphine led to a larger reduction in pain signals from the brain compared to U-50,488, even though both drugs worked well on spinal nerves. Who this helps: This research benefits patients and doctors looking for effective pain management options.

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This study looked at how different types of Alzheimer's disease affect patients' ability to name pictures. Researchers tested 41 patients and found that all had trouble naming low-frequency pictures compared to healthy older adults, but those with visual problems were much slower, and those with verbal issues made more mistakes. These findings are important because they show that different types of Alzheimer's can impact language skills in specific ways, helping to tailor support and treatment for patients. Who this helps: This helps patients with Alzheimer's and their caregivers.

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This study looked at 24 patients with Alzheimer's disease to see if oxiracetam, a memory-boosting drug, could improve their cognitive functions. After extensive testing, researchers found no improvement in memory scores for those taking oxiracetam compared to those given a placebo. This matters because it shows that oxiracetam does not help with the memory problems caused by Alzheimer's. Who this helps: This helps patients with Alzheimer's and their families by providing clarity on treatment options.

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This study examined a specific area in the human skull called the greater wing of the sphenoid, particularly around a hole known as the foramen ovale. Researchers found that this hole is surrounded by a type of bone formed from a membrane, which plays a major role in the skull's structure. Understanding these bony formations is important because they may affect how various blood vessels and nerves function in the region, which can have implications for medical procedures and anatomical knowledge. Who this helps: This helps surgeons and medical professionals working with cranial anatomy.

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This study looked at how the internal carotid artery, which supplies blood to the brain, develops in mammals. Researchers found that the artery's position changes as mammals grow, and they determined that both medial and promontory positions come from the same embryonic source, rather than from separate vessels. This is important because it challenges current scientific ideas about how these arteries evolved, suggesting that scientists should be cautious about certain classifications used in studying mammalian evolution. Who this helps: This research helps scientists and researchers studying mammalian anatomy and evolution.

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This study looked at specific bones in the mouths of different types of mammals, including monotremes (like the platypus), marsupials (like kangaroos), and placental mammals (like humans). The researchers found that these bones, known as the pterygoid and ectopterygoid, develop differently across mammal groups. For example, in higher mammals, the pterygoid bone is smaller and fuses with the ectopterygoid before hardening into bone, which helps support the muscles in the mouth area. Who this helps: This research helps scientists and veterinarians understand mammal anatomy better, which can improve animal health and treatment.

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Researchers studied how chicken embryo nerve cells absorb noradrenaline, a key chemical messenger, when grown in lab cultures for three days. They found that the brightness of the nerve cell axons varied significantly, meaning some absorbed more noradrenaline than others, even after treating them with drugs designed to block its uptake. This variation highlights that not all nerve cells behave the same way in terms of taking in noradrenaline, which is important for understanding nervous system function and drug effects. Who this helps: This helps doctors and researchers studying nerve function and potential treatments for nerve-related conditions.

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Researchers studied cells from the adrenal glands and sympathetic ganglia of rats to see if they contained a certain chemical called noradrenaline. They found that noradrenaline was present in small granulated cells, but only in specific types: one type of sympathetic cell and the adrenal medulla cells. In the small granulated cells that contained noradrenaline, researchers detected chromium, indicating the presence of noradrenaline, but did not find it in other types of cells. Who this helps: This research benefits scientists and doctors studying stress responses and related disorders.

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This study looked at two types of cells in the sympathetic nervous system of rats: chromaffin-positive (CH+) cells and small intensely fluorescent (SIF) cells. Researchers found that the number of CH+ cells closely matched that of yellow SIF cells but not green SIF cells, and this pattern remained consistent across different ganglia and ages of the rats. Understanding these cell distributions can help in studying how the nervous system develops and functions in both health and disease. Who this helps: This benefits researchers and scientists studying the nervous system and related conditions.

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This study looked at three types of small granulated cells in the nerves of rats that control important bodily functions. Researchers found that each cell type has different characteristics, such as size and density of their granules, which can affect how signals are transmitted. Understanding these cells helps clarify how nerve signals operate, which is important for treating conditions related to nerve function. Who this helps: This helps doctors and researchers focusing on nerve-related disorders.

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In this study, researchers looked at how certain hormones, specifically catecholamines and hydrocortisone, affect the levels of important chemicals in nerve cells from chick embryos. They found that adding hydrocortisone to cultured cells increased a specific type of cell's fluorescence by a significant amount (more than 99% compared to the control). Additionally, when nerve cells were treated with noradrenaline, their fluorescence also increased, indicating higher levels of this chemical. Who this helps: This research benefits scientists and doctors studying nerve cell development and function, particularly in understanding how stress hormones affect nerve cells.

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This study looked at two types of cells in the nervous system of rats: chromaffin-positive (CH+) cells and small intensely fluorescent (SIF) cells, at different ages (from newborn to adult). The researchers found that these cells were spread out randomly in the nerve clusters and that younger rats had mostly green fluorescent SIF cells, while older rats had both green and yellow cells. Overall, they observed that there were more SIF cells than CH+ cells, and the findings help us understand how these nerves develop and change with age, which could be important for medical research in nerve-related conditions. Who this helps: This helps researchers and medical professionals studying nerve function and development.

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This study focused on the effects of chrysotile asbestos on lung cells, specifically looking at how it causes cells to age more quickly and the impact this has on the formation of collagen, a key structural protein. Researchers found that depending on the amount of asbestos used, the production of collagen could either increase or decrease. Understanding these reactions is important because they can help explain how asbestos exposure leads to lung diseases. Who this helps: This helps patients and doctors working to treat asbestos-related lung diseases.

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This study looked at how the drug reserpine affects certain small cells in the nervous system of rats. Researchers found that a single dose of reserpine significantly reduced the number of cells that showed signs of releasing catecholamines (important chemicals for cell signaling), while increasing those that did not. After multiple doses, the effect was even stronger, with a twofold decrease in the fluorescence of certain small cells, indicating a reduced ability to release these chemicals. Who this helps: This research helps doctors and scientists understand how medications like reserpine can affect nervous system function.