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- W96317196 abstract "Abstract Important relationships between venous pressure, blood volume, and cardiac output were described over fifty years ago, but the clinical application of peripheral venous pressure measurements was limited by errors in methodology and by incomplete physiologic data on the function of the venous system. There has been a recent renewal of interest in the venous system due to the advent of open heart surgery and additional physiologic data indicating that central venous pressure could be measured more accurately and would have more clinical usefulness than peripheral venous pressures. The description of new technics for cannulation of the central venous system by Richards and associates, [19] Hughes and Magovern, [20] Aubainac, [22] Keeri-Szanto, [24] and Wilson, Grow, and Demong [25] made monitoring of CVP a simple bedside procedure. A further modification of Wilson's technic involves the use of a 15 gauge, 6 inch, Rochester needle, which is introduced percutaneously into either subclavian vein. The needle is removed, leaving the outer catheter in place. A Seldinger guide wire is used to thread the catheter into the superior vena cava without fluroscopic guidance. A total of 132 catheterizations of the superior vena cava have been carried out by this technic, with a 8.3 per cent complication rate, none of which were serious. None resulted in death of the patient. CVP is not a linear function of blood volume, except under special controlled conditions that rarely exist in clinical practice. Therefore, CVP cannot be used to estimate blood volume. CVP, on the other hand, is an expression of the rate of venous return compared with the myocardial competency (the ability of the heart to handle the venous return). Since the terms “rate of venous return” and “effective circulating blood volume” are functionally similar, CVP can be used as a measure of the effective circulating blood volume related to the competence of the heart. Isolated absolute CVP measurements are of little value unless they are unusally high or low. Continuous monitoring of CVP and correlation of changes in pressure with volume expansion or contraction are useful guides to fluid therapy. CVP monitoring is an adjunctive procedure that facilitates the diagnosis and treatment of abnormal circulatory states and is most useful when related to other data, such as history, physical findings, urinary output, systemic blood pressure, pulse pressure, blood volumes, and cardiac output." @default.
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- W96317196 date "1965-08-01" @default.
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- W96317196 title "Central venous pressure monitoring" @default.
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- W96317196 doi "https://doi.org/10.1016/0002-9610(65)90016-4" @default.
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