It is the purpose of this report to describe the procedure and to illustrate its application in the diagnosis of right-to-left shunts with particular reference to infants.
MethodsPlatinum electrodes for use in the artery were prepared by melting a small bead (0.038") on the end of a 45-cm. length of 28-gage (0.0126") platinum wire. The wire is then threaded through polyethylene tubing (.023" I.D. by .038" O.D.) or polyvinyl tubing
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