Arrange the percutaneous insertion sites for pulmonary artery catheter from nearest to farthest.

Arrange the percutaneous insertion sites for pulmonary artery catheter from nearest to farthest.

• A. Left internal jugular, right internal jugular, antecubital, femoral
• B. Right internal jugular, left internal jugular, antecubital, femoral
• C. Right internal jugular, left internal jugular, femoral, antecubital
• D. Left internal jugular, right internal jugular, femoral, antecubital

Answer: (C)

The key idea is how far the catheter must travel to reach the right atrium from each access site. The right internal jugular vein provides the shortest, most direct route into the superior vena cava and then the right atrium, so it’s the nearest. The left internal jugular vein is still central but has a longer path because the left brachiocephalic vein crosses to join the right side, adding distance and a bit more angulation. A femoral site must travel up the external and common iliac veins into the IVC to reach the heart, which is farther than the central neck routes. The antecubital (peripheral) veins are the farthest away, requiring passage through the arm veins, axillary/subclavian, brachiocephalic, SVC, and then into the right atrium, making this the longest route. Therefore the order from nearest to farthest is right internal jugular, left internal jugular, femoral, then antecubital.

The key idea is how far the catheter must travel to reach the right atrium from each access site. The right internal jugular vein provides the shortest, most direct route into the superior vena cava and then the right atrium, so it’s the nearest. The left internal jugular vein is still central but has a longer path because the left brachiocephalic vein crosses to join the right side, adding distance and a bit more angulation. A femoral site must travel up the external and common iliac veins into the IVC to reach the heart, which is farther than the central neck routes. The antecubital (peripheral) veins are the farthest away, requiring passage through the arm veins, axillary/subclavian, brachiocephalic, SVC, and then into the right atrium, making this the longest route. Therefore the order from nearest to farthest is right internal jugular, left internal jugular, femoral, then antecubital.