The position of the venous end of the subclavian catheter was determined in 100 children by recording the intracavitary potentials. The measuring of the intracavitary wave P was used as a diagnostic criterion. In 30 cases these findings were supported by a radiopaque study, in 12 cases by a postmortem examination. The results of the observations are shown in the scheme. A conclusion is made concerning the possible use of the electrometric method of control of the catheter position in the department of intensive therapy for children.
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