AC, Arterial canal or foramen.
The chief varieties of haemorrhage are arterial, venous and capillary.
It is not surprising that with so highly developed an arterial system Limulus and Scorpio should have a highly developed mechanism for determining the flow of blood to the respiratory organs.
The heart has a pair of venous ostia, often blending into one, and an anterior arterial aorta.
The blood sample is obtained by arterial puncture, usually in the wrist or arm or from an arterial puncture, usually in the wrist or arm or from an arterial line already in place.
The right and left halves are completely divided by septa, no mixture of the venous and arterial blood being possible, an advance upon reptilian conditions, even the highest.
- Diagram of the arterial system of A, Scorpio, and B, Limulus.
In heart disease the chief work of the latter half of the 19th century was, in the first quarter, such clinical work as that of William Stokes and Peter Mere Latham (1789-1875); and in the second quarter the fuller comprehension of the vascular system, central and peripheral, with its cycles and variations of blood pressure, venous and arterial.
The respiratory drive is increased and the arterial blood gas shows a partially compensated metabolic acidosis.
acidosis with a low arterial pH.
Since the renal allograft has no collateral arterial supply, irreversible injury may result if the ischemic time exceeds 1.5 hours.
Some centers will use magnetic resonance angiography to help examine the arterial supply (blood supply) to your legs or arms.
Accelerated atherosclerosis may occur following balloon angioplasty, placement of an arterial stent, and following transplantation.
arterial tumor embolization in two cats with pulmonary carcinoma.
arterial hypertension inappropriate?
arterial insufficiency will affect the ability of any wound to heal.
arterial oxygen saturation of 90% .
The driving hydrostatic pressure (head of pressure) is controlled by the afferent and efferent arterioles, and provided by arterial pressure.
I was ready to find out if I may have arterial blockages, which may be continuing to advance.
This stretching is to allow for lengthening of the graft when distended with arterial blood.
Arterial blood sampling Blood can be drawn from an artery either via an indwelling arterial cannula or by direct arterial puncture.
After injecting the arterial system, Hunter confirmed that the external carotid had been duly tied off.
efferent arterioles, and provided by arterial pressure.
This results in an arterial embolism, hence the term paradoxical embolism.
The 1994 Northridge earthquake in Los Angeles, California, caused the closure of two major freeways and damage to the arterial network.
gangrene of the foot, arterial leg ulcers.
Comment: are definitions for treatment of pulmonary arterial hypertension inappropriate?
inadvertent injection of drugs into the arterial circulation may result in vascular spasm with loss of tissue due to anoxia.
indwelling arterial cannula or by direct arterial puncture.
Berridge DC, Kessel D. Fibrinolytic agents for acute arterial occlusion.
oedemageneralized arterial vasospasm leads to a decreased circulating blood volume with variable amount of tissue edema.
Acting centrally, it reduces sympathetic outflow, thus, reducing arterial pressure, heart rate, and catecholamine release from the adrenal medulla.
Collaborative overview of randomized trials of antiplatelet therapy II: Maintenance of vascular graft or arterial patency by antiplatelet therapy.
For neurolytic blocks (arterial insufficiency) 3 - 5 ml 6% aqueous phenol is injected.
Thrombosis of a coronary or carotid arterial plaque has obvious potentially fatal consquences!
At this point arterial pulsation is usually transmitted to needle.
To avoid arterial puncture the operator's fingers gently pull the carotid artery away from the midline.
resonance angiography to help examine the arterial supply (blood supply) to your legs or arms.
Standard practice is to titrate the FIO 2 to an arterial oxygen saturation of 90% .
Spinal cord ischaemia, caused by reduction of arterial flow or venous stasis, may contribute to the development of clinical features.
True heparin-induced thrombocytopenia is also often complicated by venous or arterial thrombosis not a feature in the 2 cases reported here.
It is uncertain whether there may also be a very slight risk of arterial thrombosis.
arterial tonus on ipsilateral side Ã², on the contralateral side Ã± .
The machine purports to give the central arterial waveform from the measured radial artery pressure waveform.
Influence of breathing technique on arterial blood pressure during heavy weight lifting.
The vascular system is highly developed (in the non-degenerate forms); large arterial branches closely accompany or envelop the chief nerves; capillaries are well developed.
Much light has been thrown upon the variations of arterial and venous blood pressures by Karl Ludwig (1816-1895) and his many followers: by them not only the diseases of the circulatory system itself are elucidated, but also those of other systems - the nervous, for instance - which depend intimately on the mechanical integrity of the circulation of the blood as well as on the chemical integrity of the blood itself.
1830), Karl Ludwig (1816-1895), Leonard Hill - we have attained to a better conception of such events as arterial disease, apoplexy, "shock," and so forth; and pharmacologists have defined more precisely the virtues of curative drugs.
To avoid arterial puncture the operator 's fingers gently pull the carotid artery away from the midline.
Arterial tonus on ipsilateral side Ã², on the contralateral side Ã±.
Physiology 1 The Circulatory System The circulatory system can be divided into two parts; the arterial system, and the venal system.
Vitamin C is a powerful antioxidant that helps prevent arterial damage caused by free radicals.
A constant elevated blood pressure can weaken the arterial walls and cause organ damage due to the heart being overworked.
This includes people who have heart disorders (including congestive heart failure and arterial fibrillation.
Helps to prevent plaque build up - Working along with vitamin B6, the antioxidant properties of the flavonoids help to prevent plaque build up on the arterial walls.
Arteriosclerosis-A chronic condition characterized by thickening, loss of leasticity, and hardening of the arteries and the build-up of plaque on the arterial walls.
Hypertension-Abnormally high arterial blood pressure, which if left untreated can lead to heart disease and stroke.
During and after pregnancy, there is an increased risk of the uterus rupturing and of arterial bleeding.
Arterial switch, to correct transposition of the great arteries, involves connecting the aorta to the left ventricle and connecting the pulmonary artery to the right ventricle.
A pulse oximeter or arterial blood gas measurement reveals the presence of decreased oxygen in the blood.
If infants are hospitalized, other tests such as an arterial blood gas analysis are done to determine if the child is receiving enough oxygen.
Twin-twin reverse arterial perfusion (TRAP) sequence occurs in about 1 percent of monochorionic twins.
Twin:twin reverse arterial perfusion (TRAP) sequence-A condition in which one fetus lacks a heart and the other fetus pumps the blood for both.
With the exception of arterial blood gas, pulse oximetry, and total lung capacity, pulmonary function tests are performed using spirometry (from the Greco-Latin term meaning "to measure breathing").
Arterial blood gases are measured on a blood sample that is taken from an artery.
Except for the arterial blood gas tests and pulse oximetry, pulmonary function tests should not be given to patients who have had a recent heart attack, or who have certain other types of heart disease.
Allergic purpura (AP), a form of vasculitis (inflammation of the blood vessels), is a disease characterized by inflammation of the small arterial vessels (capillaries) in the skin, kidneys, and intestinal tract.
Hypoxemia-A condition characterized by an abnormally low amount of oxygen in the arterial blood.
Arterial blood has a higher blood pressure than blood in veins.
Although both the artery and the vein retain their normal connections, the new opening between the two causes some arterial blood to shunt (be diverted) into the vein because of the blood pressure difference.
For example, after catheterizations, arteriovenous fistulas may occur as a complication of the arterial puncture in the leg or arm.
Surgery is used to connect an artery and vein so that arterial blood pressure and flow rate widens the vein and decreases the chance of blood clots forming inside the vein.
Finally, there is a heart health product line that has added CoEnzyme Q10, which is known for decreasing arterial plaque, and added amino acids, which are known for preventing fatty acid build-up in the heart.
Pulmonary hypertension is high blood pressure affecting the arterial structures of the lungs on the right side of your body.
Engaging in moderately intense cardiovascular activity, such as walking or aerobics, is unlikely to increase pulmonary arterial pressure.
Mackay, " The Development of the Branchial Arterial Arches in Birds, with special reference to the Origin of the Subclavians and Carotids," Phil.
If the flow of arterial blood only is arrested, the part depending upon it for nutrition becomes numb, cold and shrivelled, and the form of mortification known as dry gangrene occurs.
They supposed that it was accompanied by a peculiar hyaline thickening of the arterial wall, usually of the tunica intima, and hence they termed the supposed diseased state " arterio-capillary fibrosis," and gave the fibrous substance the name " hyaline-fibroid."
Such injuries are apt to occur in syphilitic endarteritis, or senile arterial decay, whereby an artery may be blocked permanently, as if with an embolus, and the area supplied by it, in so far as it was dependent upon this vessel, deprived of nutrition.
In the sphere of physiology and in the interpretation of associated arterial diseases much obscurity still remains; as, for instance, concerning the nature of the toxic substances which produce those bilateral changes in the kidneys which we call Bright's disease, and bring about the "uraemia" which is characteristic of it.
Marey, 1863) attention was drawn to the physical features of the circulation, to the signs of degeneration of the arterial tree, and less definitely to the fluctuations of blood pressure; but as we have said under the consideration of diseases of the heart, the kymographs of Ludwig and his pupils brought out these fluctuations far more accurately and completely.
The valley of the Brahmaputra (q.v.), or Yaru Tsang-po or simply Tsang-po - the river has also various local names - is the great arterial valley of southern Tibet.
The respiratory rhythm is less frequent and the breathing less deep; the heart-beat is less frequent; the secretions are less copious; the pupil is narrow; in the brain there exists arterial anaemia with venous congestion, so that the blood-flow there is less than in the waking state.
This may occur suddenly, as when the resistance is increased in the arterial system by a e on f sudden exertion or strain, and more slowly when the resistance is increased in the pulmonary circulation of the by inflammation of the respiratory passages.
3 and 4, snp), and further a dorsal gastric canal and arterial canal which transmit the alimentary tract and the dorsal artery respectively (figs.
In Scorpio the completion of the horizontal plate by oblique flaps, so as to form an actual diaphragm shutting off the cavity of the prosoma from the rest of the body, possibly gives to the organs contained in the anterior chamber a physiological advantage in respect of the supply of arterial blood and its separation from the venous blood of the mesosoma.
The arterial system is very completely developed in both Limulus and Scorpio, branching repeatedly until minute arterioles are formed, not to be distinguished from true capillaries; FIG.
The connexion is not so intimate in Scorpio, but is nevertheless a very close one, closer than we find in any other Arthropods in which the arterial system is well developed, e.g.
Scorpio certainly comes nearer to Limulus in the high development of its arterial system, and the intimate relation of the anterior aorta and its branches to the nerve centres and great nerves, than does any other Arthropod.
Nitroglycerin is valuable as a preventive in cases of cardiac pain, such as angina pectoris, and it is also used in other conditions where it is desirable to reduce the arterial tension.
And on the influence of these inconspicuous bodies and of the pituitary body in sustaining arterial blood pressures physiologists have thrown some important light.
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