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  • Title: Echocardiographic evaluation of umbilical venous catheter placement.
    Author: Ades A, Sable C, Cummings S, Cross R, Markle B, Martin G.
    Journal: J Perinatol; 2003 Jan; 23(1):24-8. PubMed ID: 12556923.
    Abstract:
    OBJECTIVE: To compare techniques for guiding and confirming placement of umbilical venous catheters (UVCs) using two-dimensional echocardiography. STUDY DESIGN: Fifty-three newborns admitted to our neonatal intensive care unit who required an UVC or who were transferred within 24 hours of UVC placement at a referring hospital were studied. UVC position was assessed by antero-posterior (AP) chest radiography (CXR), lateral CXR, and oxygenation data. The accuracy of the above techniques was compared to echocardiography with saline contrast injection. RESULTS: Echocardiography revealed that UVCs were located ideally at the right atrial/inferior vena cava junction in only 12 (23%) of 53 patients. Twenty-four (45%) were incorrectly positioned in the left atrium. The sensitivity and specificity of AP CXR in evaluating inappropriate UVC position were 32% and 89%, respectively. Lateral CXR and thoracic level on AP CXR did not predict accurately catheter position. UVC pO(2) data were not useful in excluding left atrial placement. CONCLUSION: Current methods to determine insertion length and confirm location of UVCs are not adequate. Echocardiography should be considered to confirm correct placement of UVCs.
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