TY  - JOUR
T1  - UNderlying flaws in the sarnoff curve
AU  - BOBA A
Y1  - 1979/09/01
N1  - 10.1001/archsurg.1979.01370330114030
JO  - Archives of Surgery
SP  - 1092
EP  - 1093
VL  - 114
IS  - 9
N2  - To the Editor.—Careful analysis of Dr Del Guercio's comments about the article by Samii et al that appeared in the Archives (113:1414-1416, 1978) shows a serious conceptual flaw in the logic underlying the "Sarnoff diagram." To find the flaw, one must look to the "dimensional" aspects of the x and y axes and to the quantities that are plotted on them. One should really think in terms of a "mapping" process, where individual members of one set (values for pulmonary wedge pressure) are placed in some certain correspondence with individual members of another set (the positive integers) in such a manner that certain relationships that exist between objects of the sets are retained after the mapping operation is completed; in this case, a wedge pressure of 9 is higher than a wedge pressure of 8, just as the cardinality of the number 9 is greater than the cardinality of
SN  - 0004-0010
M3  - doi: 10.1001/archsurg.1979.01370330114030
UR  - http://dx.doi.org/10.1001/archsurg.1979.01370330114030
ER  -