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A number of reports have been published in which permanent ischemic sequelae occurred even in the presence of a normal Allen's test. [6] [7] In addition, the results of Allen's tests do not appear to correlate with distal blood flow as demonstrated by fluorescein dye injections. [8] [9] Further modifications to the test have been proposed to ...
An arterial blood gas (ABG) test, or arterial blood gas analysis (ABGA) measures the amounts of arterial gases, such as oxygen and carbon dioxide. An ABG test requires that a small volume of blood be drawn from the radial artery with a syringe and a thin needle , [ 1 ] but sometimes the femoral artery in the groin or another site is used.
A blood gas test or blood gas analysis tests blood to measure blood gas tension values and blood pH.It also measures the level and base excess of bicarbonate.The source of the blood is reflected in the name of each test; arterial blood gases come from arteries, venous blood gases come from veins and capillary blood gases come from capillaries. [1]
arterial blood gas: hco 3 − = 24 p a co 2 = 40 p a o 2 = 95 ph = 7.40 alveolar gas: p a co 2 = 36 p a o 2 = 105 a-a g = 10 other: ca = 9.5 mg 2+ = 2.0 po 4 = 1 ck = 55 be = −0.36 ag = 16 serum osmolarity/renal: pmo = 300 pco = 295 pog = 5 bun:cr = 20 urinalysis: una + = 80 ucl − = 100 uag = 5 fena = 0.95 uk + = 25 usg = 1.01 ucr = 60 uo ...
An SaO 2 (arterial oxygen saturation, as determined by an arterial blood gas test [8]) value below 90% indicates hypoxemia (which can also be caused by anemia). Hypoxemia due to low SaO 2 is indicated by cyanosis. Oxygen saturation can be measured in different tissues: [8]
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Arterial blood oxygen tension (normal) P a O 2 – Partial pressure of oxygen at sea level (160 mmHg (21.3 kPa) in the atmosphere, 21% of the standard atmospheric pressure of 760 mmHg (101 kPa)) in arterial blood is between 75 and 100 mmHg (10.0 and 13.3 kPa).
Arterial lines are most commonly used in intensive care medicine and anesthesia to monitor blood pressure directly and in real-time (rather than by intermittent and indirect measurement) and to obtain samples for arterial blood gas analysis.