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umbilical line
An umbilical line is a catheter that is inserted into one of the two arteries or the vein of the umbilical cord. Generally the UAC/UVC (Umbilical Artery Catheter/Umbilical Vein Catheter) is used in Neonatal Intensive Care Units (NICU) as it provides quick access to the central circulation of premature infants. UAC/UVC lines can be placed at the time of birth and allow medical staff to quickly infuse fluids, inotropic drugs, and blood if required. It is sometimes used in term or near-term newborns in whom the umbilical cord stump is still connected to the circulatory system. Medications, fluids, and blood can be given through this catheter and it allows monitoring of blood gasses and withdrawing of blood samples. Complications include infection and thromboembolism.
''Transumbilical catheter intervention'' is also a method of gaining access to the heart, for example to surgically correct a patent ductus arteriosus.
==Umbilical arterial catheter==
The position of an umbilical arterial catheter is confirmed on plain film. From the umbilicus, the umbilical arterial catheter dives inferiorly and joins the right or left internal iliac artery before turning superiorly to the common iliac artery and aorta. Appropriate positioning of the catheter tip can be either 'high' or 'low.' The high range is judged relative to thoracic vertebra, and is between T6 and T10, to avoid major aortic branches. The low range is relative to lumbar vertebra, and is between L3 and L5. The lower position may be associated with a higher rate of vascular complications such as thrombosis or vasospasm.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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