Detection of retained surgical sponges

Area of Science:

• Radiology
• Neurosurgery
• Medical Imaging

Background:

• Neurosurgical sponges are essential tools in surgery.
• Accurate detection of retained sponges is crucial for patient safety.
• Radiography is a common imaging modality used post-operatively.

Purpose of the Study:

• To experimentally evaluate the accuracy of radiographic detection of neurosurgical sponges.
• To quantify false-negative and false-positive rates in sponge detection.
• To assess the influence of different sponge types on radiographic detectability.

Main Methods:

• Commercially available neurosurgical sponges were placed in paravertebral locations within a cadaver.
• Radiographs were taken of the cadaver with and without sponges.
• Eight observers interpreted 72 radiographs, assessing for the presence of sponges.

Main Results:

• Mean false-negative and false-positive rates for sponge detection were approximately 10%.
• Observer responses showed significant variation, but errors were compensatory along the receiver operating characteristic curve.
• False-negative rates ranged from 3% to 25%, depending on the specific type of neurosurgical sponge used.

Conclusions:

• Radiographic detection of neurosurgical sponges presents a detection accuracy challenge.
• The type of neurosurgical sponge significantly impacts its radiographic visibility.
• Further research may be needed to improve imaging protocols for sponge detection.