How should an Umbilical Artery Catheter (UAC) be positioned to avoid ischemic injury?

Positioning an Umbilical Artery Catheter (UAC) high between T6 and T9 is crucial to prevent ischemic injury. This positioning ensures that the catheter is placed in the thoracic aorta, allowing for adequate perfusion to the lower limbs and abdominal organs. By maintaining this placement, the catheter avoids areas of blood supply that could lead to complications such as limb ischemia or damage to nearby vessels.

In contrast, lower placements could increase the risk of perfusion issues to critical organs, while positioning too high or directly into specific heart structures or major arteries introduces significant risks of injury and compromised blood flow. Therefore, correctly positioning the UAC in the specified thoracic segment optimally balances monitoring capabilities with the safety of the patient.