Articles tagged with Anesthesia
Concentrations of anesthetics desflurane, isoflurane, and sevoflurane have been rising globally, making a small contribution to climate change. The gases are potent greenhouse-gas effects, with one kilogram of desflurane equivalent to 2,500 kilograms of carbon dioxide.
A new website called WebTIPS provides individualized information and support to help children and parents prepare for surgery, reducing anxiety levels. The site uses evidence-based strategies and interactive features like animations and games to familiarize children with the hospital experience.
Anesthetics bind to and interfere with certain proteins in excitatory neurons, which are necessary for signal transmission involved in anesthesia and pain perception. This discovery may lead to more targeted and safer concentration levels of anesthetics.
A study published in JAMA Network found that premedication with lorazepam did not improve patient satisfaction after surgery, but was associated with longer extubation times and lower cognitive recovery rates. The researchers suggest a lack of benefit for routine use of sedatives as pre-medication.
Research suggests that anesthetics could have a lasting effect on children's cognitive abilities, with those under three years old at higher risk of adverse effects. The University of Toronto team recommends avoiding anesthetics for young children unless necessary for life-saving procedures.
Scientists discovered two novel anesthetic compounds through a screening process of over 350,000 compounds, which interacted with apoferritin. The breakthrough could lead to the development of new, safer general anesthetics, as traditional drugs have been largely unchanged for decades.
A study published in The Journal of General Physiology has found that commonly used anesthetics affect ion channel proteins, impairing cell-to-cell communication. This discovery could lead to the development of improved anesthetics with fewer side effects.
A new study found that general anesthesia impairs memory in mice by increasing the activation of α5GABA(A) receptors, leading to reduced synaptic plasticity. Inhibition of these receptors reversed memory defects in animals given anesthesia, suggesting a potential treatment for post-anesthesia cognitive impairment.
A study of 77 women who died during pregnancy or childbirth found no racial difference in the risk of pregnancy-related death, contrary to national trends. However, distance from the hospital was significantly associated with an increased risk of mortality, suggesting that differences in health care access may be a contributing factor.
A study published in the Journal of Healthcare Risk Management found that anesthesia-related deaths have declined, but complications persist. The research highlights the importance of patient communication, thorough medical history, and preoperative assessments to prevent injuries.
A new study by Case Western Reserve University found that moderate sedation is used to calm anxiety in over half of patients, with fear of needles being the second most common reason. The study provides a guideline for when to use moderate sedation, but raises concerns about endodontist training and certification.
A new study introduces the 'area under the curve of oxygen desaturation', which provides a more comprehensive approach to monitoring blood oxygen levels during procedures. This measure, known as AUC Desat, includes information on the depth, duration, and rate of episodes of oxygen desaturation.
A massive study of 3 million general anaesthetics reveals that most episodes of awareness are short-lived, but 51% lead to distress and 41% to longer-term psychological harm. The use of muscle relaxants is a significant risk factor.
A nationwide survey of Swedish anesthesiologists and nurse anesthetists found low awareness of cognitive side effects following surgery. Postoperative cognitive impairments can have major implications for patient care. Investigators called for improved knowledge on risk factors, prevention, and management.
Patients with low vitamin D levels are at increased risk of death and serious complications after noncardiac surgery. Higher vitamin D concentrations were associated with decreased odds of in-hospital mortality/morbidity, but the association was only statistically significant for cardiovascular complications.
A new 'ramp control' anesthetic technique has been developed to simplify preoperative testing for patients with severe sleep apnea. The simplified approach allows doctors to visualize the site of airway obstruction in just four minutes, while achieving minimal drops in blood oxygen levels.
Stimulating the ventral tegmental area with mild electric currents induced dopamine release and restored conscious behaviors in anesthetized rats. The study suggests that dopamine release from this region may play a role in emergence from general anesthesia.
A study found that stimulating a major dopamine-producing region in the brain can help rats wake up from general anesthesia, suggesting its potential to induce active emergence from anesthesia in surgical patients. The researchers hope this approach could speed recovery and enhance operating room efficiencies.
Lab studies reveal hydroxyethyl starch (HES) has direct toxic effects on kidney cells, with the total mass of HES molecules being a major factor. The study suggests that newer low-molecular weight HES solutions may not be safer than previous products.
Researchers observed low hand hygiene compliance rates among anesthesia providers, with lowest rates at case start and end. They were most likely to perform hand hygiene after potential exposure to body fluids.
Patients who received regional anesthesia had a significantly lower length of stay (6 days vs. 6.3 days) than those who received general anesthesia, with no significant difference in 30-day mortality rates. The study also found poorer outcomes for nursing home residents following hip fracture surgery.
A study of over 56,000 adults undergoing hip repair found regional anesthesia was associated with a modestly shorter length of hospital stay but not a lower risk of death. The use of regional anesthesia may reduce postoperative complications and could lead to improved quality of care.
A study published in Anesthesia & Analgesia found no long-term effects on psychosocial outcomes for patients with intraoperative awareness during general anesthesia. Despite initial concerns, the research reveals no significant difference in PTSD diagnosis or other mental health conditions between patients with and without awareness.
A new study by Dr. Andrew Hudson and colleagues provides clues about the brain's processes used to navigate from unconsciousness back to consciousness after anesthesia. The researchers found that the brain activity occurred in discrete clumps, or clusters, and that certain patterns consistently occurred in anesthetized rodents.
A study published in JAMA Pediatrics found that very-low-birth-weight (VLBW) babies who undergo major surgery have an increased risk of death or subsequent neurodevelopmental impairment. The study included 12,111 infants and found a 50% increase in risk for VLBW infants who underwent major surgery compared to those who did not.
New research reveals that brain activity transitions through dynamic 'way stations' before returning to full consciousness after anesthesia. The study's findings have implications for understanding how brain injury or neurological disease disrupts consciousness, and may provide new insights into coma recovery.
The Affordable Care Act empowers nurse anesthetists to expand access to anesthesia services, but state laws restrict their scope of practice. The article explores how the ACA affects CRNA practice and highlights roadblocks to full utilization of their skills.
A new approach to managing patients before, during, and after colorectal surgery has been shown to significantly reduce hospital stays and readmission rates. The enhanced recovery approach, which includes standardized care pathways and evidence-based practices, cut hospital admissions by two days and reduced readmission rates by half.
Researchers found three key binding sites that contribute to the induction of the anesthetic response, affecting sodium channel function and inducing anesthesia. The study's findings provide new insights into the molecular basis of general anesthesia.
Researchers found that reducing blood pressure during surgery can increase the risk of brain damage due to reduced oxygen supply. The study advises a safer approach to hypotensive anesthesia to minimize risk while maintaining effective surgery.
Researchers found that rats' brains registered odor exposure while under anesthesia, despite no behavioral response. The study's findings suggest a need to re-evaluate how anesthesia depth is measured clinically.
Researchers at St. Michael's Hospital found that ultrasound-guided paravertebral blocks improved pain relief, reduced recovery room time, and enabled earlier discharge for breast cancer patients compared to general anesthesia. The study's lead author notes the benefits of this technique will also apply to cosmetic breast surgeries.
Research using nearly 200,000 patient records found that regional anesthesia types do not make patients more prone to falls after knee replacement surgery. Spinal or epidural anesthesia may even decrease the risk of falls compared to general anesthesia, according to a study published in Anesthesiology.
A large study found that patients receiving etomidate for anesthesia may be at increased risk of mortality and cardiovascular events, with a 250% increase in death risk compared to those receiving propofol. The results have sparked concerns over the safety of etomidate use.
A study from Massachusetts General Hospital found that postoperative pain can contribute to temporary impairments in learning and memory in surgical patients. Researchers identified a probable mechanism for pain-induced cognitive impairment, suggesting pathways that may be targeted by potential preventive measures.
Researchers at Massachusetts General Hospital have developed a computer-controlled system to automate the process of administering anesthesia, promising more precise and efficient control. The system uses brain activity monitoring to adjust drug infusion and maintain a deep state of anesthesia, reducing the need for manual intervention.
Researchers have developed a computerized system that can track patients' brain activity and automatically adjust drug dosages to maintain the correct state during medically induced comas. The system uses EEG patterns and real-time feedback to optimize anesthesia levels, eliminating the need for constant monitoring by nurses.
Remimazolam, a benzodiazepine-type sedative drug, has shown promising results as an alternative to conventional sedatives in colonoscopy procedures. The medication provides adequate sedation with a fast onset and quick recovery time, making it a valuable option for patients undergoing brief medical procedures.
A study of liposomal bupivacaine found it produces femoral nerve block lasting longer than 24 hours in volunteers, but the results are not straightforward due to variable responses and an inverse relationship between dose and response. Larger trials will be needed before the product can be recommended for routine clinical use.
The new digital journal is dedicated to reporting patient cases that make an important teaching point or scientific observation in perioperative medicine, critical care, and pain management. All new case reports will be open access during the launch period.
Mobile devices could increase access to pulse oximetry, a crucial tool for monitoring blood oxygen levels, by providing an affordable and effective alternative to traditional equipment. This technology has the potential to improve patient outcomes, particularly in resource-poor settings where timely intervention can be life-saving.
Severe sepsis increased by about 10% per year, affecting about 1 in 11,000 women; many cases occur in women with no known risk factors, highlighting the need for improved detection of sepsis.
Aromatherapy has been shown to be a promising, non-invasive treatment for postoperative nausea, with patients receiving essential oil blends experiencing lower nausea scores. Additionally, intravenous administration of a five percent solution of dextrose may reduce the need for antiemetic medications and shorten recovery time.
A study found that a simple four-part program, including nicotine patches and counseling, can increase the percentage of patients who quit smoking before surgery. The intervention improved preoperative smoking cessation rates by about 10%, with patients in the group receiving the program being four times more likely to stop smoking.
A recent study suggests that forced-air patient warming systems may affect airflow in operating rooms, potentially increasing exposure to bacteria and other contaminants during surgery. Conductive warming systems, on the other hand, do not disrupt ventilation airflows over the surgical site.
A study found that nearly half of older adults undergoing surgery with general anesthesia developed delirium in the postanesthesia care unit (PACU), with 45% of patients experiencing delirium. Delirium is linked to decreased cognitive function and an increased risk of nursing home admission. The study suggests that even brief episodes ...
A study found high rates of burnout and depression among US anesthesiology residents, with nearly half considered at risk of burnout. The researchers also discovered that these conditions can affect the quality of patient care and increase medical errors.
A report in Anesthesia & Analgesia highlights retained guidewires as a complication that is always preventable yet still occurs. The article analyzes risk factors and contributing factors, including distraction of clinicians and task interruptions, to introduce preventive measures such as mandatory training programs and checklists.
Researchers at Washington University School of Medicine found no link between nitrous oxide anesthesia and increased risk of heart attack. Despite concerns about the impact on homocysteine levels, the study showed that B vitamins did not influence heart attack risk in surgery patients.
The 'epidemic' of sleep apnea in surgical patients poses significant financial burdens on hospitals due to the lack of evidence-based guidelines. A new study suggests that regional anesthesia can reduce major complications by 17% in patients with sleep apnea undergoing joint surgery.
Researchers found anesthesia-induced cell death in neurons is not limited to the immature brain, but targets neurons of a certain age and maturational stage. This finding may have implications for millions of children and adults undergoing surgical anesthesia annually.
Researchers developed a set of equations to estimate the initial dose of intrathecal spinal pain relievers, avoiding the need for epidural anesthesia trials. This approach could shorten time to satisfactory pain control in patients with uncontrolled cancer pain, allowing them to spend more of their remaining days at home.
Using regional anesthesia instead of general anesthesia decreases major complications in patients with sleep apnea undergoing total joint replacement. This study found that neuraxial anesthesia improves outcomes, reducing pulmonary, gastrointestinal, and infectious complications, as well as acute renal failure and hospital length of stay.
Researchers studied over 900 patients with dementia and found that receiving general anesthesia for procedures after age 45 is not a risk factor for developing dementia. The study's findings provide reassurance for elderly patients undergoing surgery.
A University of Michigan study found that survival from cardiac arrest is higher when it occurs in the operating room (O.R.) or post-anesthesia care unit (PACU) compared to other hospital locations. The presence of anesthesia providers in these areas may improve outcomes for certain patients.
Neuraxial anesthesia reduces morbidity, mortality, length of hospital stay, and costs in patients undergoing hip or knee replacement. It lowers rates of pulmonary compromise, pneumonia, infections, and acute renal failure compared to general anesthesia.
Two large patient databases show comparable rates of adverse outcomes with or without nitrous oxide; a significant reduction in the risk of death after surgery for patients receiving nitrous oxide. The findings remain unchanged on propensity score analysis, highlighting some limitations in the study data.
A new study from Stanford University School of Medicine found that using anesthesia during the external cephalic version procedure can increase the likelihood of successful breech baby turns, resulting in fewer cesarean sections. This leads to cost savings for women and their families.
Researchers at Tufts University found a statistical association between dental anesthesia and missing lower wisdom teeth in children. The study suggests that injecting anesthesia into young children may interrupt the development of wisdom teeth.
A study reports a rising rate of propofol abuse among health care professionals, characterized by rapid onset and quick recovery time, with most abusers being women with depression and history of childhood trauma. The study suggests that propofol abuse can lead to unintended side effects, including physical injuries and loss of control.