UNASSIGNED: The objective of this study was to compare an Acoustic Puncture Assist Device-Epidural Locator (APAD-EL) with the "pop sensation" (POP) and "lack of resistance" (LOR) commonly used to confirm penetration of the ligamentum flavum and to ensure correct epidural placement in @entity235 and @entity468 . We recruited 38 @entity235 and @entity468 undergoing surgery and receiving epidural analgesia. Two anesthetists performed epidural puncture using the POP and LOR signs. Simultaneously, APAD-EL was used to collect visual and acoustic confirmation during advancement and placement of the needle tip for post hoc evaluation. A positive APAD-EL sign consists of a sudden pressure drop at the needle tip visible on a display and a concomitant pitch change of an acoustic signal. Failure to record a sudden pressure drop is considered a negative APAD sign. Descriptive statistics were used. In 32 @entity1 with positive POP and LOR, the APAD was also positive. In one @entity1 , POP was positive with a negative LOR and APAD result. Five @entity1 had negative POP but positive LOR. Four @entity1 had APAD positive and one ( @entity235 ) APAD negative. Study results showed that the APAD-EL information supports the subjective signs of correct needle placement suggested by positive POP and LOR experienced by trained anesthetists. The technique can be useful to assist difficult epidural puncture and as a training and teaching tool.

Clinical Practice of Epidural Puncture in @entity235 and XXXX Assisted by a Commercial Acoustic Puncture Assist Device-Epidural Locator: Preliminary Results.

@entity235 :: ('9615', 'Species') :: ['dog', 'dogs'] @entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity468 :: ('9685', 'Species') :: ['cats']
@entity468 :: (9685,Species) :: ['Cats']
