Transfemoral venous cannulation involves which technique?

Transfemoral venous cannulation involves which technique?

• A. Retrograde stick while applying gentle steady manual suction with a 10 mL syringe
• B. Antegrade puncture with no suction
• C. Arterial puncture
• D. External jugular approach

Answer: (A)

In transfemoral venous cannulation, the key step is securing venous access by a puncture aimed in a retrograde direction, followed by confirming entry with a gentle suction on a syringe to aspirate venous blood. Using a 10 mL syringe to apply suction lets you pull back and see dark, non-pulsatile venous blood, which confirms you’re in a vein before advancing a guidewire or cannula. This technique helps differentiate venous access from arterial access and provides a controlled, confirmatory step before proceeding. The other approaches aren’t correct for this context: antegrade puncture with no suction doesn’t provide this venous confirmation, arterial puncture would yield bright, pulsatile blood and is not the target vessel, and an external jugular approach is a different access site entirely.

In transfemoral venous cannulation, the key step is securing venous access by a puncture aimed in a retrograde direction, followed by confirming entry with a gentle suction on a syringe to aspirate venous blood. Using a 10 mL syringe to apply suction lets you pull back and see dark, non-pulsatile venous blood, which confirms you’re in a vein before advancing a guidewire or cannula. This technique helps differentiate venous access from arterial access and provides a controlled, confirmatory step before proceeding.

The other approaches aren’t correct for this context: antegrade puncture with no suction doesn’t provide this venous confirmation, arterial puncture would yield bright, pulsatile blood and is not the target vessel, and an external jugular approach is a different access site entirely.