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	Oxygen-haemoglobin dissociation curve - Wikipedia, the free encyclopedia
		The oxygen-haemoglobin dissociation curve plots the proportion of haemoglobin in its saturated form on the vertical axis against the prevailing oxygen tension on the horizontal axis.
		The 'plateau' portion of the oxyhemoglobin dissociation curve is the range that exists at the pulmonary capillaries (minimal reduction of oxygen transported until the p(O
		The oxygen dissociation curve for fetal hemoglobin is to the left of that of adult hemoglobin, in order to facilitate diffusion of oxygen across the placenta.
	en.wikipedia.org /wiki/Oxyhemoglobin_dissociation_curve (476 words)

	Oxygemoglobin Dissociation Curve (Site not responding. Last check: 2007-10-31)
		The curve is of sigmoidal shape and relates oxygen content to the partial pressure of oxygen in the blood.
		This shifts the dissociation curve to the left.
		The position of the oxyhemoglobin curve is best described by the pO2 tension at which hemoglobin is 50% saturated.
	perfline.com /notebook/curve.html (363 words)

	Mid Carolina Internal Medicine Associates - Oxygemoglobin Curve (Site not responding. Last check: 2007-10-31)
		It is commonly thought that shifts in the oxyhemoglobin dissociation curve are important factors in adaptation to hypoxic conditions.
		This shape of curve offers benefits in that almost complete saturation can be obtained over a wide range of oxygen partial pressures at the lung while large quantities of oxygen can be delivered to peripheral tissues once the oxygen partial pressure falls to lower levels than those normally encountered at the alveoli.
		Summary Leftward shifts in the oxyhemoglobin dissociation curve (falling P50) would appear to have benefits in preserving oxygen delivery and extraction under circumstances of severe hypoxic stress such as might be found in cases of hypoperfusion, anemia, and ambient hypoxia.
	www.midcarolina.org /papers/oxy.hb.curve.html (1189 words)

	HEMOX Analyzer Evaluation
		The ODC is recorded during deoxygenation with nitrogen gas and plotted on graph paper; the oxygen tension is detected by a Clarke electrode while the oxyhemoglobin fraction (%HbO2) is evaluated by a dual-wavelength spectrophotometer.
		The oxyhemoglobin dissociation curve (ODC) for whole blood relates hemoglobin percentage saturation with oxygen to the partial pressure of the oxygen with which the blood is in contact.
		The Hemox-Analyzer determines the ODC by exposing 50 µ L of blood or hemolysate to an increasing partial pressure of oxygen and deoxygenating it with nitrogen gas.
	tcssci.com /evaluation.htm (2063 words)

	All about Oxygen
		The oxyhemoglobin dissociation curve mathematically equates the percentage saturation of hemoglobin to the partial pressure of oxygen in the blood.
		This is represented by the oxyhemoglobin dissociation curve.
		Everything we do is about optimizing the delivery of blood to the tissues as a means of maintaining homeostasis and promoting healing, and in the end it is the oxygen content of blood that is more important than the partial pressure of oxygen (which we commonly measure).
	www.ccmtutorials.com /rs/oxygen/page06.htm (698 words)

	Anaesthesia UK : Oxygen Dissociation Curve
		The oxygen dissociation curve is a graph that shows the percent saturation of haemoglobin at various partial pressures of oxygen.
		The purpose of an oxygen dissociation curve is to show the equilibrium of oxyhaemoglobin and nonbonded haemoglobin at various partial pressures.
		The sigmoid shape of the oxygen dissociation curve is a result of the co-operative binding of oxygen to the four polypeptide chains.
	www.frca.co.uk /article.aspx?articleid=100345 (426 words)

	blood.htm
		Oxyhemoglobin dissociation curve, P50, and implications of shifts in the curve:
		Because of the flat upper portion of the dissociation curve, hemoglobin is
		There is an increase in the affinity of the hemoglobin for oxygen as evidenced by the leftward shift of the oxygen dissociation curve.
	www.mountain-research.org /teaching/blood.htm (1591 words)

	Sect. 4, Ch. 5: The Oxyhemoglobin Dissociation Curve
		However, Hb is typically 97.5% saturated at a normal alveolar PO of 100 Torr because of the unique sigmoidal shape of the oxy-Hb dissociation curve.
		As illustrated, mixed venous blood of the pulmonary artery is denoted by "V" on the oxy-Hb dissociation curve.
		This is indicated by "A" on the curve to signify arterialized (oxygenated) blood.
	www.lib.mcg.edu /edu/eshuphysio/program/section4/4ch5/s4ch5_18.htm (329 words)

	Oxygen Transport (Site not responding. Last check: 2007-10-31)
		Be able to explain the mechanism responsible for the sigmoidal shape of the oxyhemoglobin dissociation curve.
		Be able to describe the advantage of the sigmoidal shape of the oxyhemoglobin dissociation curve with respect to oxygen delivery to the tissues.
		Be able to illustrate the effect of temperature on the oxyhemoglobin dissociation curve.
	people.msoe.edu /~tritt/bi274/obj.BloodO2.html (576 words)

	Oxyhemoglobin Dissociation Curve
		In its basic form, the oxyhemoglobin dissociation curve describes the relation between the partial pressure of oxygen (x axis) and the oxygen saturation (y axis).
		The fetal dissociation curve is shifted to the left relative to the curve for the normal adult.
		The oxyhemoglobin dissociation curve, and the role of hemoglobin, are important clinically in understanding the relationship of arterial, oxygen saturation to the partial pressure of oxygen in arterial blood, particularly as it relates to disease.
	www.ventworld.com /resources/oxydisso/dissoc.html (1570 words)

	Oxyhemoglobin Dissociation Curve (Site not responding. Last check: 2007-10-31)
		As one can tell from the change in the normal slope to the slope of a right shift, the arterial oxygen tension and hemoglobin saturation are less than the normal curve.
		A shift of the curve to the left occurs in alkalosis, hypocarbia, and hypothermia.
		This is the point of the normal curve in the upper right the above graph.
	www.hodsonhome.com /mna2001/chemphysics/o2curve.htm (280 words)

	dissociation - The Columbia Encyclopedia, Sixth Edition - HighBeam Research (Site not responding. Last check: 2007-10-31)
		Dissociation is generally reversible; when the atoms or ions of the dissociated substance are returned to the original conditions, they recombine in the original form of the substance.
		The dissociation constant is a measure of the extent of dissociation.
		The dissociation of a blocked urethane and the subsequent...
	www.highbeam.com /ref/doc0.asp?docid=1E1:dissocia (413 words)

	THE MERCK MANUAL, Figure 203-2, Ch. 203, Heart Failure
		Arterial oxyhemoglobin saturation (ordinate) is related to partial pressure of O
		The dissociation curve is shifted to the right by increased hydrogen ion (H
		The curve is shifted to the left by decreased H
	www.merck.com /mrkshared/mmanual/figures/203fig2.jsp (73 words)

	Highbeam Encyclopedia - Search Results for dissociation (Site not responding. Last check: 2007-10-31)
		He was a professor of physics in Stockholm in 1895 and became director of the Nobel Institute for Physical Chemistry, Stockholm, in 1905.
		The oxyhemoglobin dissociation curve in liver cirrhosis *.
		An investigation of the effects of polymer structure upon the dissociation temperature of blocked urethanes.
	www.encyclopedia.com /SearchResults.aspx?Q=dissociation (647 words)

	expht8
		In the mid range of the oxyhemoglobin dissociation curve a relatively small decrease in the PO2 results in a relatively large decrease in percent saturation.
		The oxygen dissociation curve is affected by: A. Body temperature and pH; B. Body temperature, pH, and PCO2; C. Only by PCO2; D. By the concentration of red blood cells.
		At the upper portion of the oxyhemoglobin dissociation curve, a small increase in the partial pressure of O2 results in a large increase in saturation.
	www.usd.edu /~jarichar/expt8a.html (783 words)

	METHOD AND APPARATUS FOR SPECTROPHOTOMETRY OF THE EYE (WO0226119A2)
		On the steep part of the curve a predictable correlation exists between Sa02 and P02- In this steep part of the curve, the Sa02 is a good reflection of the extent of hypoxen-iia and the changing status of arterial oxygenation.
		Shifts in the oxyhemoglobin dissociation curve to the right or to the left define changes in the affinity of hemoglobin for oxygen.
		The'relationship between arterial saturation of hemoglobin and oxygen tension is represented by the sigmoid-shaped oxyhemoglobin dissociation curve.
	www.delphion.com /details?pn=WO00226119A2 (867 words)

	Thomson Delmar Learning Companion - Nursing Fundamentals: Caring & Clinical Decision Making
		The oxyhemoglobin dissociation curve is a graphic representation of the shifts of oxygen from the hemoglobin molecule to the blood and back.
		A shift to the left of the curve represents an increase in the SaO2 in proportion to the PaO2.
		In this condition, the blood is carrying an adequate amount of oxygen but little of it is released from the hemoglobin to be carried to the tissue; this is caused by increased pH (alkalosis), hypothermia, or a decrease in the red blood cell enzyme 2,3-DPG (which occurs after a massive transfusion of banked blood).
	www.delmarlearning.com /companions/content/0766838366/students/ch39/faq.asp (443 words)

	All about Oxygen
		The effect of shunt on the oxyhemoglobin dissociation curve
		The addition of mixed venous blood, slides the patient down the curve to the steep slope, where severe hypoxemia may result.
		Shunt classically does not respond to oxygen, although the administration of 100% oxygen may increase the dissolved oxygen content and increase the mixed venous oxygen saturation.
	www.ccmtutorials.com /rs/oxygen/page07.htm (304 words)

	Thomson Delmar Learning Companion - Fundamentals of Nursing Standards and Practice 2E
		The oxyhemoglobin dissociation curve provides a graphic representation of the relationship between partial pressure of oxygen (PaO2) and oxygen saturation (SaO2).
		The oxyhemoglobin dissociation curve can be utilized in clinical practice for it is affected by physiological factors occurring the body that cause it to “shift” thereby affecting affinity.
		A shift to the right leads to decreased affinity and increases the release of oxygen to the tissues and occurs in response to acidosis, hyperthermia, and in the presence of the enzyme 2,3 DPG.
	www.delmarlearning.com /companions/content/0766824527/ch32/faq.asp (682 words)

	Monitoring of oxygenation with oximetry
		Assuming a normal position of the oxyhemoglobin dissociation curve, an arterial blood oxyhemoglobin saturation of 90% would require an arterial blood oxygen tension of 60 mmHg.
		Since even severe gas exchange abnormalities can be covered up by pushing SpO2 to the flat part of the oxyhemoglobin dissociation curve and uncovered by sudden withdrawal of supplemental oxygen, it is important to assure uninterrupted oxygen therapy to those patients who have been found to need it.
		If hypoxemia is defined on the basis of oxyhemoglobin saturation, one must further consider situations in which the oxyhemoglobin dissociation curve is right-shifted and saturation is low with respect to oxygen tension.
	www.clinicalwindow.net /cw_issue_09_article2.htm (1896 words)

	OxyHemoglobin Dissociation CurveShockwave
		This curve describes the relationship between available oxygen and amount of oxygen carried by hemoglobin.
		Once the PaO2 reaches 60 mm Hg the curve is almost flat, indicating there is little change in saturation above this point.
		But, at less than 60 mm Hg the curve is very steep, and small changes in the PaO2 greatly reduce the SaO2.
	www.rnceus.com /abgs/abgcurve.html (237 words)

	The Oxyhemoglobin Dissociation Curve in Liver Cirrhosis -- Clerbaux et al. 129 (2): 438 -- Chest
		The Oxyhemoglobin Dissociation Curve in Liver Cirrhosis -- Clerbaux et al.
		curve (ODC) in a cohort of cirrhotic patients in stable condition
		Results: Mean ODC was the same in the two groups.
	www.chestjournal.org /cgi/content/abstract/129/2/438 (333 words)

	RESP 310 (Site not responding. Last check: 2007-10-31)
		Discuss the significance of the steep portion of the oxyhemoglobin dissociation curve.
		Discuss the significance of a shift in the oxyhemoglobin dissociation curve.
		values to the shift of the oxyhemoglobin dissociation curve and hemoglobin’s affinity for oxygen.
	www.dmacc.edu /instructors/lkbarrett/CPRPUN08.htm (296 words)

	A development of the oxyhemoglobin dissociation curve analyzer -- Hahn et al. 41 (2): 259 -- Journal of Applied ...
		A development of the oxyhemoglobin dissociation curve analyzer -- Hahn et al.
		A development of the oxyhemoglobin dissociation curve analyzer
		curve for Bohr shifts from pH 7.40 is described, and the performance of the
	jap.physiology.org /cgi/content/abstract/41/2/259 (124 words)

	Sect. 4, Ch. 5: Shifts in the Oxyhemoglobin Dissociation Curve (Site not responding. Last check: 2007-10-31)
		The oxy-Hb dissociation curve is also capable of shifting to the right or to the left.
		Shifts in the oxy-Hb dissociation curve due to changes in the blood PCO
		An increase in blood temperature or 2,3-diphosphoglycerate (2,3-DPG) levels in the RBC also shift the oxy-Hb dissociation curve to the right, while a decrease in temperature or 2,3-DPG shifts the curve to the left.
	www.lib.mcg.edu /edu/eshuphysio/program/section4/4ch5/s4ch5_20.htm (180 words)

	Oxyhemoglobin Dissociation Curve
		The reason we have so much hemoglobin is because oxygen does not easily dissolve in water (about 3% of all our oxygen is in the serum - the rest is bound to hemoglobin), so we have developed this unique system of oxygen transportation to meet our needs.
		When oxygen is bound to hemoglobin, it is called oxyhemoglobin.
		The curve can be shifted to the right or left.
	www.monroecc.edu /depts/pstc/backup/paraohdc.htm (1259 words)

	Oxyhemoglobin dissociation curve in liver disease -- Caldwell et al. 20 (2): 316 -- Journal of Applied Physiology
		Oxyhemoglobin dissociation curve in liver disease -- Caldwell et al.
		Articles by Caldwell, P. Articles by Cournand, A. Oxyhemoglobin dissociation curve in liver disease
		The in vivo oxyhemoglobin dissociation curves of patients with
	jap.physiology.org /cgi/content/abstract/20/2/316 (106 words)

	The Oxygen Dissociation Curve
		The oxygen dissociation curve is a graph that shows the percent saturation of hemoglobin at various partial pressures of oxygen.
		The purpose of an oxygen dissociation curve is to show the equilibrium of oxyhemoglobin and nonbonded hemoglobin at various partial pressures (Oxygen Dissociation Curve).
		The sigmoid shape of the oxygen dissociation curve is a result of the cooperative binding of oxygen to the four polypeptide chains.
	www.bio.davidson.edu /Courses/anphys/1999/Dickens/Oxygendissociation.htm (359 words)

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