Comparison of Three Different Puncture Techniques in EBUS-TBNA

The slow-pull capillary technique was performed as follows: after identification and measurement of the target lymph node, a needle was used to puncture the lymph node with the stylet in place.At the same time, the stylet was slowly and continuously pulled to create weak negative pressure.

The operation steps are the same as above, but the negative pressure device of 10ml syringe is connected behind the puncture needle.

The operation steps are the same as above, but there is no negative pressure device behind the puncture needle