Articles tagged with Heart Rate
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A recent study has found that caffeine consumption by children and adolescents triggers different physiological responses in boys and girls, particularly after puberty. The study revealed significant gender differences in cardiovascular responses to caffeine, including varying effects on heart rate and blood pressure.
A new study found that obstructive sleep apnea (OSA) causes a reduction in activity among brainstem neurons responsible for regulating heart rate. This reduced activity contributes to increased heart rate and blood pressure, as well as the risk of cardiovascular events in OSA patients.
A small study found that inflating a balloon inside the artery after placing the stent increases patients' risk of low blood pressure, slow heart rate, stroke, or heart attack. Skipping this step may be beneficial in preventing these complications.
Research tracked almost 23,000 UK children's pulse rates from 1980-2008, finding a consistent rise of 0.04 bpm per year, more pronounced in boys. The increase suggests higher risks of diabetes and heart disease in later life.
A randomized study found that patients treated with esmolol achieved a target heart rate of 80-94 beats per minute, compared to 95/min in the control group. The study also showed improved mortality rates and overall survival among those receiving esmolol.
A high resting heart rate is associated with a higher risk of death, regardless of physical fitness level. Men with heart rates between 51-80 beats per minute had a 40-50% increased risk of death compared to those with lower rates.
A new method for estimating blood loss, based on base deficit (BD), is more accurate than the current Advanced Trauma Life Support (ATLS) classification. BD was linked to increased severity of injury, length of stay, morbidity and mortality.
A study found that essential oils reduce blood pressure and heart rate in people exposed for less than an hour, but prolonged exposure is associated with increased heart rate and blood pressure. This suggests that aromatherapy may be beneficial for cardiovascular health when used correctly.
The BELLA laser system has delivered a petawatt of power in a pulse just 40 femtoseconds long at a pulse rate of one hertz, a world record for laser performance. This achievement enables the creation of compact particle accelerators and tabletop free electron lasers for investigating materials and biological systems.
A study found that varenicline increases the unpleasant effects of alcohol and decreases drug liking, reducing drinking. This may be due to varenicline counteracting the positive effects of alcohol, such as feeling 'buzzed' and talkative.
Researchers have developed a wearable device that monitors vital signs such as heart rate and respiration while tracking activity levels, providing continuous data for improved medical care. The technology has the potential to revolutionize patient care by reducing office visits and improving treatment outcomes.
A recent study conducted by Concordia University found that depressed individuals are twice as likely to have a heart attack compared to non-depressed individuals. The study also showed that depressed individuals take longer to recover their normal heart rate after exercise, indicating a dysfunctional stress response.
Researchers at Wake Forest Baptist Medical Center found that fludrocortisone, a drug commonly used to treat orthostatic intolerance, reduced debilitating chronic nausea in patients. The study involved 17 children who experienced significant improvements in nausea after treatment.
Patients with previously diagnosed obstructive sleep apnea who stop using CPAP machines experience a significant increase in symptoms within days, including higher heart rates and blood pressure. The researchers suggest that this finding could improve the efficiency of clinical trials on OSA.
A new analysis of 69 studies involving 143,000 healthy children has identified new reference ranges for heart rate and respiratory rate that differ significantly from existing guidelines. The study found a decline in respiratory rate from birth to early adolescence, with infants under 2 years showing the steepest fall.
A new study suggests that abnormal heart rate turbulence may be a significant risk factor for heart disease death, even among those considered low-risk. Abnormal heart rate turbulence was found to be an even stronger predictor of heart disease death than elevated C-reactive protein levels in this population.
Researchers found that an abnormal response to early heartbeats can predict cardiac death in healthy-looking individuals. Those with no conventional markers of cardiovascular disease were eight times more likely to die from cardiac causes if they had abnormal heart rate turbulence.
Researchers have developed a non-invasive technique using microwaves to measure vital signs, such as heart rate and stress levels. The system detects changes in reflected waves caused by body movements, allowing for near-real-time monitoring.
A study published in the European Heart Journal found that patients with an elevated resting heart rate over a five-year period were at a significantly increased risk of death from both cardiovascular and all-cause mortality. Tracking heart rate over time can provide a simple yet important marker of health issues, allowing for potentia...
A University at Buffalo study finds that walking to school can reduce stress reactivity in children, leading to lower heart rate and blood pressure. Regular physical activity throughout the day may provide a protective effect against cardiovascular disease.
A study published in Experimental Biology and Medicine reports the discovery of periodic heart rate decelerations in premature human infants. The researchers developed a mathematical model based on Hopf bifurcation theory to describe the dynamics of these decelerations, which are statistically correlated with impending sepsis in neonates.
Researchers discovered that music can induce moderate arousal with swelling crescendos and relaxation with decrescendos, modulating cardiovascular control. This study suggests a potential role for music in rehabilitative medicine, particularly for patients with heart and stroke conditions.
Researchers created a cell culture model that accurately mimics HCN channel function in whole mammalian hearts, enabling the genetic reprogramming of individual channels. This breakthrough facilitates the development of practical biological pacemakers by allowing for rapid assessment of channel mutations before animal testing.
A study by Henry Ford Health found that energy drink consumption increased blood pressure and heart rate in healthy adults. However, the effects could be particularly concerning for individuals with pre-existing heart conditions, highlighting the need to avoid energy drinks.
A small study found that energy drink consumption increased systolic blood pressure by 7.9% within four hours and heart rate by 11% on the seventh day. The increases could be clinically significant in patients with heart disease or those who consume energy drinks frequently.
Adolescents with parents in the military experience increased stress and physiological changes during wartime, including higher blood pressure and heart rates. Researchers found that these effects were particularly pronounced in children of deployed parents.
Hydrogen sulfide gas induces a state of suspended animation in mice, maintaining normal blood pressure, which may help treat critically ill patients. The gas reduces metabolic rate and body temperature, but surprisingly does not decrease blood pressure.
Two 'ephedra-free' supplements, Advantra Z and Xenadrine EFX, increased heart rate by an average of 11-16 beats per minute and blood pressure by 7-12 percent. The study calls for further research on the safety and effectiveness of bitter orange-containing supplements.
A Mayo Clinic study found that spit tobacco use can cause dramatic increases in heart rate and blood pressure, blunting the body's natural protective mechanisms. This raises concerns for both short-term users and individuals with established heart disease, suggesting a link to long-term cardiovascular risks.
A new study reveals that sleep loss significantly increases cardiovascular disease risk in alcoholics, disrupting heart rate and sympathetic catecholamine levels. Behavioral treatments may help alleviate sleep abnormalities and related physiological issues.
The Laupala cricket's unique courtship songs play a crucial role in its rapid speciation, resulting in the formation of new species. This phenomenon sheds light on the role of individual choices in shaping species evolution and biodiversity.
A study by Andrew Steptoe and colleagues found that lower-level civil servants showed higher biological stress responses, including heart rate and cortisol levels, compared to their high-status counterparts. The study suggests that the experience of lower social status may trigger these responses.
A study of 81 undergraduates found that males exhibit higher pain thresholds and tolerances than females. The researchers also discovered that psychological factors can influence the association between physiological responses and pain responses, and additional research is needed to replicate these findings.
A study found that stress can alter fetal heart rates in response to a woman's emotional state, potentially impacting long-term health and development. The research suggests that high anxiety levels may shape fetal heart rate patterns even before birth.
A study by Rex Wright found that unfixed challenges, accompanied by strong incentives like money or status, increase cardiovascular responses, indicating intense motivational and emotional states. These findings suggest a potential link between chronically elevated cardiovascular responses and negative health outcomes.
Researchers investigating cumulative effect of maternal cocaine use on infants' mental development, examining interactions with environment, family violence, and substance co-use. The study aims to understand how children develop self-regulation and control impulses.
A growing global problem: Bacterial resistance to antibiotics is on the rise, with penicillin and macrolide antibiotics showing high levels of resistance. Telithromycin, a new ketolide antibiotic, has shown promise in combating treatment-resistant respiratory tract infections.
A Johns Hopkins study found that one-third of Korean Americans have high blood pressure, with almost 75% not controlling it. The prevalence is 32%, much higher than the American rate of 24% and Korean rate of 22%. English-speaking ability directly impacts hypertension control among Korean Americans.
Research by Injury Prevention found that toughened glassware in bars led to a 60% higher injury rate among staff compared to annealed glassware. The study also showed that the toughened glasses tended to break spontaneously, leading to multiple injuries.
A study by University of Pittsburgh researcher Akira Sekikawa found a wide range of death rates across the US, with southern states having the highest CHD mortality rates. The researchers attributed these differences to variations in cigarette smoking and high school graduation rates among men aged 35-44.
The UCSF report reveals significant variations in cardiovascular risk factors among different ethnic/racial groups and regions in California. High blood pressure and diabetes rates are disproportionately affecting African Americans and Hispanics, with 41.5% of African American men and 35% of African American women having high blood pre...
A recent study published in Psychophysiology found that parking ticket writers experience significant increases in blood pressure and heart rate when interacting with angry motorists. The researchers suggest that these interactions may have a cumulative negative effect on cardiovascular health.
Research found that men and women have distinct reactions to stressors, including disagreements and skill challenges. Husbands tend to respond more strongly to perceived threats to their status and power, while wives are more reactive to interpersonal conflicts and quality of interaction.
A study found that physicians are slow to adopt newer medications for atrial fibrillation, with older drugs continuing to be used despite their limitations. The research team calls for better treatment guidelines and physician education to improve patient care.
The study found that dietary DHA and EPA supplementation significantly influenced heart rate, with improved left ventricular diastolic filling observed in the marine oil groups. The fatty acid composition of plasma phospholipids may affect cardiac mechanics in humans.
A study by Duke University Medical Center found that hostile women experienced significant increases in blood pressure and heart rate when discussing an emotional event, while low-hostile women showed no such response. The research suggests that emotional stress may not be harmful for everyone, but rather poses a risk to those already ...
Researchers have designed a mini drug pump that can sense blood glucose levels and deliver the right amount of insulin, potentially simplifying the lives of diabetics. The device uses a novel alloy to create a closed-loop system, which could also be adapted for other medications.
Researchers at ORNL are developing medical telesensors to measure vital signs such as body temperature, blood pressure, and pulse rate in combat zones. The sensors will transmit data wirelessly to remote receivers, enabling medics to quickly identify wounded soldiers and prioritize treatment.
Duke University researchers conclude that physicians who achieve an 80% success rate in endoscopic retrograde cholangiopancreatography (ERCP) are adequately trained, regardless of the number of procedures performed. This finding challenges the common assumption that more procedures equal competence.