Seldinger Technique Based Pulmonary Artery Catheterization: A Procedure to Insert Pulmonary Artery Catheter Through the Jugular Vein in a Porcine Model

In pulmonary artery catheterization, a catheter is inserted into a large neck vein and is moved into the heart towards the pulmonary artery to determine cardiac and lung function. To begin, prep an anesthetized pig in the supine position. 

Puncture the skin with an IV catheter and advance it gradually into the jugular vein. Now, replace the needle from the catheter with a guidewire. Subsequently, remove the catheter from the vein. Now, widen the skin incision near the guidewire to place a sheath over it. Remove the guidewire and advance the sheath into the vein to reach the right atrium.

To achieve right heart catheterization, insert through the sheath a Swan Ganz catheter – a thin tube with a balloon on its distal end. Observe the advancing catheter to ensure the distal part of the catheter is out of the sheath. Using a syringe at the proximal end, inflate the balloon and slowly move the catheter into the right ventricle and the pulmonary artery.

The inflation of the balloon temporarily blocks the pulmonary artery to enable measurement of blood pressure. Subsequently, deflate the balloon and ensure the catheter tip remains in the pulmonary artery to allow cardiopulmonary investigations.