StayCurrentMD · PDA ligation narrated
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Video6 min·Published May 2026

PDA ligation narrated

With Dr. Steve Rothenberg
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What the experts said23 expert statements
The infant undergoing thoracoscopic PDA ligation weighs 2 kg.
Clinical
The patient is placed in a modified prone position with the left side elevated approximately 30 degrees for thoracoscopic PDA ligation.
Clinical
Port placement includes a 4 mm scope slightly behind and above the scapula tip, and 3 mm and 5 mm working ports.
Clinical
Simple insufflation is used to collapse the lung; single lung ventilation is not required, although it can be used in larger patients.
Clinical
A 3 mm port is initially placed in the posterior axillary line in approximately the fifth intercostal space to aid dissection, later changed to a 5 mm port for clip placement.
Clinical
It is important not to use monopolar cautery near the ductus because of the risk of injuring the recurrent laryngeal nerve.
Clinical
Creating a pleural flap over the mid portion of the aorta helps safely retract the vagus and recurrent laryngeal nerves out of the way.
Clinical
In this case, the ductus is large, approximately two-thirds the diameter of the aorta.
Clinical
Careful blunt dissection is used to dissect behind the ductus to avoid injuring the recurrent laryngeal nerve or tearing the ductus.
Clinical
Gentle spreading with the 3 mm vessel sealer is an excellent way to achieve adequate mobilization of the ductus.
Opinion
It is generally recommended to spread in the direction of the ductus to eliminate the risk of tearing it.
Clinical
Test clamping of the ductus is performed with a distal pulse oximeter on the foot to ensure the correct structure is being occluded.
Clinical
It is very important to have proximal and distal monitoring during PDA ligation.
Clinical
A single 5 mm endoclip is placed on the ductus after the 3 mm trocar is changed to a 5 mm trocar.
Clinical
It is important to deploy the clip into the clip applier before placing it onto the duct, as deploying while already around the duct can force the tissue away.
Clinical
The clip application resulted in complete occlusion of the ductus.
Clinical
No chest drain was left because there was no air leak at the end of the procedure.
Clinical
All incisions were closed in layers with absorbable suture.
Clinical
The patient had evidence of interstitial lung disease on CT scan, and the pulmonologist requested a lung biopsy for better evaluation.
Clinical
A 5 mm stapler is appropriate in size for a 2 kg infant for performing a wedge lung biopsy.
Clinical
Care must be taken to ensure tissue is far enough into the stapler so the staple line reaches across the entire line of the resected specimen.
Clinical
A single firing of the stapler is all that is needed for the wedge biopsy.
Clinical
The lung biopsy specimen is removed through the 5 mm port site without difficulty.
Clinical