Reviewer: Dr. Cameron Shoraka
Reviewer: Dr. Paul Eugene
Prospective observational study performed in a gross anatomy laboratory on the lower extremities of a single embalmed human cadaver to determine the test characteristics of sonographic detection of FBs and to determine if injecting fluid into the soft tissue in the area of a suspected FB changed these test characteristics.
- Differences in cadaveric and live human tissue may likely resulted in sonographic differences in how the foreign body was depicted in the study
- Postinjection evaluation was performed 1 hour after injection of the foreign body, which was longer than the period for pre injection
- The density of the embalmed tissue may have impeded the distribution of the saline around the foreign body
- Sonographers performed 144 evaluations during the course of the experiment, which may have resulted in improved technique and accuracy over time
- The 2 sonographers had met the ACEP minimum requirements for soft tissue ultrasound and had emergency ultrasound fellowship training so the results may not be applicable to novice soongraphers
Practice changing? - No.
Take home point - There was no statistically significant improvement when hydrodissection was used for foreign body identification in this study.