Tag: "oxygen" at medical news
Trial opens new possibilities for improving survival with a novel heart attack drug
...rt muscle during the attack, the resulting lack of oxygen
kills or damages heart muscle cells. Then, after blood flow is restored, either by medication or angioplasty, the starved muscle cells are damaged again as a result of the sudden return of oxygen-rich blood, a condition known as reperfusion injury. T...
Starting beta-blocker before discharge in patients hospitalized for heart failure increases usage
... the inability of the heart muscles to pump enough oxygen
and nutrients in the blood to the body's tissues. Also known as congestive heart failure, its many causes include coronary artery disease, high blood pressure, previous heart attack and valve problems. An estimated 4.7 million Americans suffer from h...
By repairing vessels, bone marrow cells slow atherosclerosis in mice
...clerosis affects arteries supplying the heart with oxygen
and nutrients, it causes coronary artery disease and puts patients at a much higher risk for a heart attack. "We believe that the arteries of young people are remarkably resistant to damage because stem cells known as vascular progenitor cells (VPCs)...
New first-aid method could prevent brain damage in patients exposed to carbon monoxide
...revent brain damage in patients by delivering more oxygen
to the brain than the standard treatment, accordin...r the new method consisting of a mixture of mostly oxygen
and some carbon dioxide. Each participant received both test treatments in random order. Researche...
Laser technology helps measure pollution from NYC buses
...s inside automobile engines and slowly reacts with oxygen
to create nitrogen dioxide. NO2 itself is responsible for the brownish haze that hangs over many cities during the afternoon of sunny days. Formaldehyde also contributes to urban smog; methane is a powerful greenhouse gas; SO2 contributes to addition...
American Thoracic Society Journal news tips for January (second issue)
...y (apnea), which can rapidly provoke low levels of oxygen
in the blood, along with cardio-respiratory depres...cular responses to inadequate amounts of available oxygen
in the blood were blunted, while their responses to excess carbon dioxide in the blood were preserve...
Symphony of memory formation revealed
...oglobin, a protein in red blood cells that carries oxygen
to body tissues, vary depending on the level of oxygenation. These differences can be detected by fMRI. Other UCLA researchers on the team were Stephen A. Engel of the Department of Psychology; Paul M. Thompson of the Laboratory of Neuroimaging and D...
Device acts as heart's security system
...woman received the implant she required continuous oxygen
therapy and a wheelchair for mobility. Today she doesnt need either.With access to data from the implanted monitor around the clock, 365 days a year, we can be way out ahead of any serious heart problems that might develop, Abraham said. If we do see...
Shedding some light on teeth whiteners
...ins. Over time the antibiotic mixes with light and oxygen
and gives teeth a grayish-blue tint that's hard to remove. All toothpastes depend on abrasives to scrub stains from the tooth surface. The first "toothpowder," invented in England in the late 1700s, like the first whiteners, was a bit harsh. It conta...
Allentown chemist wins national award for plastic polymer inventions
...lints and in membrane separations of gases such as oxygen
and nitrogen. He will receive the 2003 Award in Applied Polymer Science from the American Chemical Society at its national meeting in New Orleans. "The invention I'm proudest of is an orthopedic splint compound," said Robeson, a chemical engineer at ...
Brookhaven spotlights: News from the March 2003 American Chemical Society Meeting
... explore the detailed dynamics of the reactions of oxygen
with alkanes, which are hydrocarbons such as natur...of the reaction when using excited and non-excited oxygen
atoms, they noticed that the products were spatially distributed in two different ways. "The results...
Researchers say deadly twist key to sickle cell disease
...ossibly to new treatments. Red blood cells supply oxygen
to the body using their cargo of haemoglobin, a protein that can capture and release oxygen. Haemoglobin molecules normally float freely in the cell, but sickle cell patients have a mutated, "sticky," form of haemoglobin that tends to clump together ...
Blood test could detect heart attack early
...art attack, when heart cells are being deprived of oxygen
but have not yet begun to die. One of the proteins, C3f, was discovered as a heart attack marker for the first time and is known to be associated with inflammation. The other is a well-known protein called fibrinogen peptide A, which is involved in t...
Anemia is risk factor for physical decline in older adults
...creasing the chance of falling. Because it reduces oxygen
levels in the blood, muscle weakness may result. I...se blood vessels to dilate to compensate for lower oxygen
levels. This can cause changes to the cardiovascular system, including congestive heart failure. An...
Anemia elevates risk of physical decline in older people
... main component of red blood cells that transports oxygen
from the lungs to other tissues and then returns carbon dioxide from the body to the lungs. A person who has anemia can feel fatigued, dizzy, apathetic or irritable. Other common symptoms include muscle weakness, shortness of breath, rapid heart beat...
American Thoracic Society Journal news tips for August 2003 (second issue)
...ermittent hypoxia (inadequate amounts of available oxygen
in the blood) using a parental questionnaire and n...al form, oximetry is a process designed to measure oxygen
concentrations in the blood using an electrode placed on the finger or an earlobe.) The researchers...
Annals of Internal Medicine, tip sheet, August 19, 2003
...tain sickness (AMS) more often and had lower blood oxygen
levels at night than normal-weight men in a study ...men had worse symptoms of AMS and much lower blood oxygen
levels during sleep at simulated high altitude. Obese people traveling to high altitudes should foll...
New digital technique improves mammography results
...vessels created by a tumor to supply nutrients and oxygen
necessary for its continued growth. Contrast magnetic resonance imaging (MRI) successfully uses the same principle of detecting tumor vessels, or angiogenesis, to identify breast lesions, but is more expensive than digital mammography. "In the futur...
Recipe for a 'shake gel'
...helped the scientists see that it is the polymer's oxygen
atoms, not the hydrogen atoms as previously thought, that attach to the clay. The team's theoretical calculations also showed that water binds to the clay surfaces in a perpendicular arrangement. This may help create the firmness of the gel. Describe...
Cranberries may help reduce stroke damage
...In one condition, a group of cells was deprived of oxygen
and glucose, which occurs during ischemic stroke as brain cells are starved of oxygen
and die. In the other condition, a separate group of brain cells was exposed to hydrogen peroxide, s...
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