dilation

Discovery Promises Simpler Therapy for Sickle Cell Disease

...ngs, for the first time, implicate abnormal vessel dilation by the red cells themselves in oxygen deficiency. That oxygen deficiency, in turn, may result in sickling and, ultimately, the irreversible obstruction of blood vessels. Relieving the vascular constriction and resulting oxygen deficiency through the...

Device effective in zapping the pain out of migraines

...on, which results in an aura, followed by vascular dilation that will lead to a throbbing headache. However, in the late 1990s it was instead suggested that neuronal electrical hyper excitability resulted in a throbbing headache. This new understanding of the migraine mechanism has assisted with the developme...

Heart smart: new drug improves blood flow

...lls lining arteries to control the contraction and dilation of the arteries," Dr. Schmidt says. "The arteries stiffen and get blocked." When a blockage occurs, the cells lining the arteries produce nitric oxide to signal to the arterial muscles that they need to dilate the artery and allow more blood throug...

Boosting brain power -- with chocolate

...nk of flavanol-rich cocoa. The effect is linked to dilation of cerebral blood vessels, allowing more blood ?and therefore more oxygen ?to reach key areas of the brain. Flavanols are not only found in chocolate with a high cocoa content ?they are also present in other substances such as red wine, green tea ...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

...trols many functions, including the contraction or dilation of blood vessels. New experiments conducted by Duke University Medical Center and Howard Hughes Medical Institute researchers have shown that specialized forms of nitric oxide called SNOs may be the key to a problem that has stumped physicians for...

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Medical College researchers win federal grants

...that team up with the sickling red cells to impair dilation of blood vessels. Their findings could lead to new treatment options that prevent vascular dysfunction, characterized by oxidative stress and inflammation, in a variety of diseases. Pressure rising Researcher Allen W. Cowley Jr., chairman and prof...

dilation at Biology Definition

Nervous system

...iction of the pupil, the slowing of the heart, the dilation of the blood vessels, and the stimulation of the digestive and geniturinary systems. Nervous system diversity The nervous system varies greatly among living animals. Cnidarians , such as sea anemones and jellyfish , have a nerve net , in whi...

Marfan syndrome

...e complications such as aortic aneurysms . If the dilation of the aorta threatens to lead to rupture, a nickel-titanium stent may be inserted. Rupture of the aorta, or aortic dissection , is the most common cause of sudden death among Marfan syndrome sufferers. The skeletal and ocular manifestations of ...

dilation at Biology Dictionary

Pons

...in , which controls heart rate, constriction and dilation of blood vessels , respiration , and digestion . PICTURE ... Full article >>> Pons the closest larger bulge at the top of the spinal cord ( pons = bridge) Population a group of the same species of organ ism in the same a...

Medulla oblongata

...indbrain ; controls heart rate, constriction and dilation of blood vessels , respiration , and digestion . PICTURE ... Full article >>> medulla oblongata pons and cerebellum Medulla oblongata The medulla looks like a swollen tip to the spinal cord . Nerve impulse s arising he...

Larynx

...icle >>> larynx (the voice box) A dilation of the upper part of the trachea (windpipe) of tetrapod s (Adam's apple in human s), occurring in the front part of the neck containing the vocal cords Covered in Lab 16 Rat Respiratory and Circulatory System s ... Full article >>> ...

Cervix

...h begins with contractions of the uterus and the dilation of the cervix . Full article >>> The os is each end of the cervix , internal (to the uterus ) and external (to the vagina ) A municipality of the county Hedmark in Norway, see Os, Hedmark. A municipality of the county Hordaland i...

Ampulla

... or sac-like off shoot . Some examples include the dilation at the end of the semicircular canal of the ear, or the internal expansion of the echinoderm tube foot . Full article >>> ampulla - upper region of the mammalian oviduct , near the ovary . Fertilization typically takes place in ...

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dilation at Medicine News

Surgery made simple

...he Tracheostomy kit minimizes the risk as it has a dilation scale which allows physicians to know accurately how big a hole they are making....

New FDA Approved Drug NATRECOR For Heart Failure Patients

...ural hormone that helps dilate blood vessels. That dilation helps blood flow from the weakened heart. But it also can cause seriously low blood pressure. Two years ago, the FDA rejected approval of Natrecor because it caused so many cases of hypotension rates of 8 percent to 14 percent, depending on the do...

Detecting brain aneurysms

An aneurysm is an abnormal dilation of a blood vessel. This involves all layers of the vessel wall. Aneurysms pose a risk to health due to their potential to rupture, thrombose or embolize. The most common blood vessels involved are the abdominal and thoracic aorta, and brain. Potentia...

Warm yourself to sleep

...ake feeling. But it appears that nothing beats the dilation of blood vessels in the hands and feet as a sure way to induce drooping eyelids. Dr Kurt Krauchi and his team at the Sleep Laboratory at Basel monitored the body temperature and functions of a group of young, healthy men as they nodded off. In ever...

A simple way to do surgery

...he Tracheostomy kit minimizes the risk as it has a dilation scale which allows physicians to know accurately how big a hole they are making....

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dilation at Medicine Products

Hasford Double Ended Lacrimal Dilator

...rom the end, then more gradual taper so that quick dilation of the punctum is obtained. Stainless steel. Round knurled with polished finish. Overall length: 5.5 inches....

Parasol Punctal Occluder

...ses on insertion, eliminating the need for punctal dilation in most cases. It's easier on you, and more comfortable for your patients. Simple Sizing. Two sizes (small and medium) fit virtually all patients. A large size is also available for unusually large puncta. Pop-Out Guarantee. Because the Parasol is sp...

Delta Wire Grasper

...ncreased radial force which permits greater radial dilation in the ureter. Supplied sterile in peel-open packages. Intended for one-time use....

NForce Nitinol Helical Stone Extractors

...ncreased radial force which permits greater radial dilation in the ureter. The Unidex handle facilitates easy, ergonomic one-handed operation. Supplied sterile in peel-open packages. Intended for one-time use....

Rutner Balloon Dilation Stone Extractors

Used for ureteral dilation and stone manipulation in the ureter. Supplied sterile in peel-open packages. Intended for one-time use....

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dilation at Medicine Technology

Repros Reports That Proellex Has Demonstrated Superior Efficacy and Safety in Endometriosis When Compared to Standard of Drug Care

...metrialthickening in the 12.5mg and 25mg groups, a dilation and curettage(D&C) procedure was performed to stop the bleeding. A similarevent has not been seen at the 50mg dose during the treatmentphase. Greater than normal bleeding occurred in two patients in the50mg Proellex group after treatment was stop...

dilation at Medicine Definition

Ultradian

...elease, heart rate , thermoregulation , nostril dilation and appetite . The last involves rhythmic release of Neuropeptide Y (NPY) and Corticotropin-releasing hormone (CRH), stimulating and inhibiting appetite ultradian rhythms. Ultradian Bipolar Disorder All forms of Bipolar Disorder have a ...

dilation at Medicine Dictionary

Visual acuity test

...s vision ability at various distances. pupil dilation - the pupil is widened with eyedrops to allow a close-up examination of the eye 's retina . Full article >>> Visual acuity test This test measures how sharply or clearly you can see something at a distance. Your doctor will ask ...

Vasoconstriction

...duce central nervous system stimulation, broncho dilation , and vasoconstriction . Full article >>> Tepid baths have an antipruritic effect, possibly resulting from capillary vasoconstriction . The bath should be limited to a half hour every day or every two days. Examples of mild soaps t...

Traction

... traction system. See Elekta. FullFlow perfusion dilation catheter Experimental over-the-wire catheter for treatment of occluded coronary arteries as an alternative to balloon angioplasty catheter s. Full article >>> In a normal con traction only some of the individual muscle ...

Toxic megacolon

...;> Toxic megacolon Acute enlargement or dilation of the large intestine . Resources: ... Full article >>> Toxic megacolon Crohn& acute ;s disease - affected areas Ulcerative colitis Digestive system organ s Definition: ... Full article >>> Toxic megacolon...

Toxic

...#62; Toxic megacolon Acute enlargement or dilation of the large intestine . Resources: ... Full article >>> TOXIC HEPATITIS - Hepatitis c aused by an industrial chemical such as carbon tetra chloride or phosphorus. Full article >>> Toxic ity that affects the he...

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