A resident physician is preparing to place a right internal jugular central venous catheter in a patient requiring vasopressor support for septic shock. The necessary equipment has been brought to the patient's bedside. Arrange the following steps of the central venous catheterization procedure in the correct chronological order.
- 1Conduct a pre-procedural 'time-out' to verify the patient, procedure, and site.
- 2Don maximal sterile barrier precautions and prepare the insertion site with chlorhexidine.
- 3Puncture the vein under ultrasound guidance and thread the guidewire through the needle.
- 4Advance the central venous catheter over the guidewire and subsequently remove the guidewire.
- 5Obtain a post-procedural chest radiograph.
Cevap
The correct sequence begins with the pre-procedural safety time-out, followed by strict sterile preparation, vessel puncture with guidewire insertion, catheter advancement over the wire, and finally, a post-procedural confirmatory chest radiograph.
The standard of care for central venous catheterization dictates a specific, logical sequence to ensure patient safety and procedural success. The universal protocol mandates a 'time-out' before any intervention or preparation begins. Following this, maximal sterile barriers and chlorhexidine skin antisepsis are required to minimize infection risk. The procedure then utilizes the Seldinger technique: the vessel is safely punctured under ultrasound guidance, and a guidewire is threaded. The central venous catheter is subsequently advanced over the guidewire into the vessel, after which the wire is carefully removed. Finally, before the catheter can be safely used for vasopressor administration, a chest radiograph is required to confirm the tip is positioned correctly at the cavoatrial junction and to rule out procedural complications, such as a pneumothorax.
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Anahtar Kavram
Central venous catheterization follows a strict sequence: universal safety protocol (time-out), rigorous asepsis, the Seldinger technique (needle to wire to catheter), and post-procedural radiographic confirmation prior to use.