Articles tagged with Oxygen Saturation
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Researchers investigated the impact of skin pigmentation on pulse oximeter accuracy, finding that darker skin reduces red light absorption and affects oxygen level detection. This study provides experimental evidence for improving pulse oximeter accuracy across all skin tones.
A recent study published by CU Center for COMBAT Research investigators found that targeting slightly lower levels of oxygen saturation, from 90-96%, had similar outcomes for adult trauma patients. This approach resulted in fewer days spent on supplemental oxygen and reduced hospital stays.
A U-shaped relationship between admission peripheral oxygen saturation and all-cause hospital mortality was observed in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The lowest mortality rate occurred at an SpO2 of 89.5%, indicating that lower oxygen levels are associated with increased risk.
A recent study from the University of Missouri found that peripheral chemoreceptors are overactive in adults with type 2 diabetes, leading to increased cardiovascular risk. While high doses of oxygen reduced chemoreceptor activity, it did not improve glucose tolerance or insulin sensitivity.
A new PACT system offers rapid imaging of living organisms, enabling the tracking of whole-body dynamics and disease progression. The system achieves spatial resolution of approximately 212 micrometers and enables the visualization of oxygen saturation across complex biological systems.
Researchers investigated the effects of hypoxia on hemodynamic and metabolic parameters in patients with Fontan circulation. The study found that oxygen saturation levels remain stable during sleep and that prolonged high-altitude exposure is well-tolerated, offering new perspectives for patients with Fontan circulation.
Researchers developed a wearable device for non-invasive monitoring of hemodynamic indicators like heart rate, blood pressure, and oxygen saturation. The photoacoustic imaging watch offers valuable insights into disease diagnosis and treatment.
A comprehensive study found pulse oximeters significantly overestimated oxygen saturation readings in individuals with darker skin tones. This could lead to missed treatments and incorrect diagnoses, as devices may not accurately reflect critical oxygen levels.
A low-frequency ultrasonic device has been developed to quickly reduce blood pressure and activate blood gas exchange in the pulmonary system. This technology uses a higher radial mode of vibration, increasing acoustic signal penetration and reducing scattered signals.
Researchers found that pulse oximeters underestimate blood pumping and overestimate resistance, affecting treatment decisions. Direct blood oxygen measurement is crucial for accurate guidance, especially for Black patients already at higher risk.
Researchers at University of Tsukuba discovered a correlation between hypoxia levels and clinical symptoms in UC patients. Lower oxygen saturation in the rectal mucosa was associated with greater severity of colitis, making this method a potential tool for objective measurement of disease activity.
Researchers at Kaunas University of Technology found that low-frequency ultrasound influences blood parameters, improving oxygen saturation and lowering blood pressure. The study used artificial intelligence to analyze 300 blood samples, revealing the potential for non-pharmaceutical treatment to improve oxygen circulation.
A new study from Gladstone Institutes has greatly expanded the scientific body of knowledge about how the body responds to too much oxygen. The research highlights a particular protein, MYBBP1A, that may play a central role in regulating cells' response to hyperoxia.
A new study found that an AI-aided home stethoscope can efficiently detect asthma exacerbation in patients of all ages, including children under 5 years old. The device records and analyzes respiratory sounds, providing valuable information for parents and caregivers to identify symptoms early on.
Researchers say current models fail to project oxygen dynamics in coastal ecosystems with high photosynthetic activity, such as seagrass meadows and coral reefs. Fluctuations in oxygen levels have been observed in systems like the Venice Lagoon and Red Sea coral reefs, where marine species adapt to changing conditions.
A study published in PLOS ONE found that 72% of US-managed cetacean and pinniped stocks are highly or very highly vulnerable to climate change. The researchers used a trait-based climate vulnerability assessment framework to evaluate the impacts on marine mammals.
A study of 24,000 hospitalized COVID-19 patients found that pulse oximetry led to delayed treatment and higher readmission rates, with racial disparities observed among black patients. The study highlights the importance of accurate oxygen saturation monitoring in preventing these outcomes.
Researchers are studying ways to update pulse oximeter technology to address limitations including overestimation in patients with darker skin tones and motion artifact. The goal is to improve the accuracy of oxygen saturation readings, particularly for diverse groups and in multiple settings.
OU researchers discovered a correlation between cerebral blood flow regulation and prognosis following cardiac arrest. The study found that detecting this regulatory mechanism can improve management and optimize post-resuscitation care for individual patients.
Researchers from McGill University found that stronger winds shift the Labrador Current eastward, leading to sudden warmings or drops in oxygen levels. This has dire consequences for marine ecosystems and fisheries, including smaller species like cod and halibut, which struggle to survive in low-oxygen conditions.
A study by UMC Utrecht shows that corona patients can measure their blood oxygen levels at home using a pulse oximeter, feeling safe and experiencing more control. This method does not increase GP visits or hospitalization but contributes to relieving caregivers and keeping healthcare affordable.
Researchers found temperature to be the predominant driver of dissolved oxygen dynamics in US rivers, outperforming light and flow as factors. The study used a deep learning model to analyze data from hundreds of rivers across the United States, revealing the importance of temperature in maintaining water quality.
Researchers used transcranial stimulation to regulate Autonomic Nervous System responses and increase oxygen saturation in hospitalized patients with Covid-19. The treatment improved ANS regulation and reduced symptoms without adverse effects.
Researchers created adaptive optical phantoms by combining multiple pigments to mimic target tissue's optical properties, successfully validating them in extensive experiments. The new platform enables broader band spectra for emerging hybrid modalities and novel instruments.
A recent study compiled over 125,000 river locations across 93 countries, showing that hypoxia in rivers is more prevalent than previously thought. The research found that 12.6% of all locations exhibited at least one hypoxic measurement, with warmer, smaller, and lower-gradient waters being most affected.
Rondaxe Lake's experience is just one of thousands worldwide as lakes lose oxygen due to warming, leading to conditions like hypoxia and anoxia. This phenomenon, exacerbated by seasonal stratification, threatens aquatic life and ecosystems.
A large US study found that excess oxygen during surgery is associated with a higher risk of kidney, heart, and lung injury. The study of over 350,000 patients suggests that liberal use of oxygen may be harmful to the body's cells and tissues.
Researchers have developed an algorithm that uses smartphone camera and flash to detect low blood oxygen levels. The method produced accurate results in 80% of the participants, showing promise for remote monitoring and early detection of conditions like COVID-19.
Climate change is affecting lakes globally, causing changes in stratification regimes, dissolved oxygen levels, and habitat for native fish. Warmer water temperatures can lead to cyanobacterial blooms, reduced oxygen levels, and increased salinity, impacting aquatic organisms and human activities.
The MedSENS instrument measures body temperature, heart rate, and oxygen saturation from the ear canal using innovative sensors. It has been tested in harsh environments and proven to be easy to use, with its data transmitted wirelessly to other devices.
A significant overestimation of arterial oxygen saturation by pulse oximetry was found in Asian, Black and Hispanic patients compared to non-Hispanic white patients. This discrepancy led to unrecognized and delayed recognition of COVID-19 treatment eligibility among these groups.
A study in rural Malawi found high mortality rates for children admitted to hospital with low blood sugar or oxygen levels. The findings suggest that earlier identification and prompt care-seeking could help reduce the risk of death, emphasizing the need for better clinical management of severely ill children.
A real-time electronic decision support system helped reduce intensive care unit admissions, improve antibiotic use, and lower overall mortality rates for patients with pneumonia. The study found a 38% decrease in mortality among community hospital patients using the system.
A new study published in PLOS ONE found that all individual COVID-19 patients with low oxygen saturation levels may need lower oxygen flows than previously believed. The study's results suggest that oxygen requirements for severely ill patients are significantly lower than the World Health Organization's estimated 10 l/min.
A study published in European Respiratory Journal found pulse oximeters give false readings of up to 7% higher in patients with Mixed, Black, and Asian ethnicities compared to White patients. This can delay timely treatment for Covid-19 pneumonia, leading to poorer outcomes.
Researchers found that training at low intensity can be just as effective as high-intensity training in improving endurance and technique. Elite male cross-country skiers trained for several hours, with the majority of their sessions taking place at low intensity.
Researchers have developed a custom finger clip device that measures blood pressure and other vital signs like heart rate, oxygen saturation, body temperature, and respiratory rate. The device uses photoplethysmography sensors and achieves an accuracy rate of about 90% for systolic blood pressure.
A small clinical trial found that high-pressure hyperbaric oxygen treatment resolved severe COVID-19 breathing difficulties faster than standard therapy, with significant improvements in oxygen saturation and reduced risk of complications. However, further larger trials are needed to confirm the treatment's effects on survival.
A clinical study found that severe COVID-19 patients exhibit impaired microvascular function, which correlates with disease severity. Non-invasive near-infrared spectroscopy monitoring may help predict disease course and select responders to novel therapies.
A clinical trial of 465 patients found that administering heparin in therapeutic doses reduced mortality from COVID-19 by 78%, with benefits only observed when administered between seven and 14 days after symptom onset. The study suggests that timing is crucial for treatment efficacy.
A study by TUM demonstrated the effectiveness of an ear sensor in monitoring COVID-19 risk patients remotely, providing timely hospitalization when necessary. The sensor enabled high-quality monitoring comparable to hospital care, with great patient satisfaction and improved safety outcomes.
Research published in Nature found that oxygen levels in temperate freshwater lakes declined 5.5% at the surface and 18.6% in deep waters since 1980. Climate change is driving this decline, which threatens aquatic biodiversity and drinking water quality.
A researcher is studying the connection between CO2 and dissolved oxygen in lakes to better understand lake carbon cycling and its impact on global carbon cycle. The study aims to develop a more accurate understanding of the relationship, which could lead to improved estimates of CO2 emissions from inland waters.
Researchers found that the innate immune system overreacts in patients with severe COVID-19, leading to blood clots and oxygen saturation issues. The study suggests that this overreaction may be driven by extensive tissue damage, and may be treatable with existing drugs for hereditary angioedema.
Researchers found that smartphone PPG technology can accurately measure blood-oxygen levels and heart rate, comparable to FDA-approved hospital instruments. This technology could enhance remote monitoring of patients with chronic cardiopulmonary disease and initial treatment for respiratory viral pandemics.
Researchers at Mount Sinai Hospital developed a COVID-19 mortality prediction model based on patient's age, minimum oxygen saturation, and type of encounter. The model showed high accuracy (AUC=0·91) in predicting mortality among patients with COVID-19, offering potential for improved prognostication and management.
Researchers at UC Davis have created a device to directly measure fetal blood oxygen saturation during labor, which could lead to better information on the health of the fetus before birth. This technology has the potential to reduce the rate of C-sections and improve outcomes in difficult deliveries.
A Brazilian startup has developed a novel COVID-19 patient monitoring system that utilizes Internet of Things (IoT) technology to track clinical signs in real-time. The system alerts medical teams to patients with deteriorating conditions, enabling timely hospital referrals and reducing the risk of contagion.
The annual Chesapeake Bay Dead Zone Report Card shows hypoxia in 2019 was within the normal range despite record river flow and light winds. This suggests that nutrient reductions since the 1980s have successfully improved water quality, with the dead zone lasting longer than in recent years.
Aerobic microorganisms like Bacillus subtilis natto can reduce oxygen availability, leading to higher steel corrosion resistance in concrete. This process enhances the formation of calcium carbonate, sealing cracks and facilitating self-healing.
Graphene-based wearables track UV exposure, heart rate, hydration and oxygen saturation, while also enabling night vision through camera sensors and spectrometers. These technologies have potential applications in healthcare, food inspection and surveillance.
Research by University of Adelaide scientists has revealed that poor blood oxygenation during sleep is a significant indicator of the chance of heart-related death. Extended episodes of interrupted breathing while asleep also increase the risk.
Researchers discovered hypoxic dead zones in urban streams, caused by erosion and nutrient runoff. The study highlights the vulnerability of freshwater ecosystems to pollution and climate change.
A recent study of peripheral pulse oximeters found that non-approved devices accurately measure oxygen saturation above 90%, potentially ruling out hypoxemia. However, below 90%, medical-grade pulse oximeter measurements are recommended for accurate patient management decisions.
The Mississippi Bight region is expected to expand its low dissolved oxygen zones due to human impacts. Satellite data and field observations suggest the eastern delta region is similarly affected by river discharge.
The VIMS hypoxia model reports a similar total volume of low-oxygen waters to 2017, but with earlier and longer-lasting low-oxygen conditions. Wind mixing played a crucial role in reducing mid-summer hypoxia.
A new study by Oregon State University economists found that watershed groups in the US have a positive impact on local water quality. The researchers analyzed data from 2,150 watersheds and found that increased group activity was associated with improved water quality.
A study published in Nature Communications reveals that hippo waste can cause fish kills in Africa's Mara River due to depleted oxygen and nutrient levels. The research monitored water chemistry and flow downstream from 171 hippo pools over three years, finding that flushing flows can reduce dissolved oxygen concentrations.
Researchers studied COPD patients with moderate oxygen deficiency and found no significant difference in time to death, hospitalizations, or quality of life between those who received supplemental oxygen and those who didn't. The study suggests that long-term oxygen therapy may not be necessary for all COPD patients.
Research reveals that targeting lower oxygen saturation levels (85-89%) for extremely preterm infants increases the risk of death by up to 45% compared to higher targets (91-95%). This finding confirms previous studies and has significant implications for neonatal care.