Post-void residual measurement: A comprehensive review of the clinical relevance and precision of bladder scanner devices.

OBJECTIVE

To evaluate the accuracy of bladder scanners in measuring bladder volume and to compare their precision.

METHOD: MEDLINE and Cochrane databases were searched from January 1, 1990 to December 30th, 2023. We selected studies assessing results of bladder volume measurement using bladder scanners, standard ultrasonography or bladder catheterization.

RESULTS

In total, 177 studies were screened, of which 22 were included in the final analysis. According to the literature, there is no clinically significant difference in the measurement of bladder volume using urethro-vesical catheterization, bladder scanner, or conventional ultrasound. Studies comparing different types of bladder scanners did not show any difference in accuracy.

CONCLUSIONS

Bladder scanners are precise tools to evaluate bladder volume in urological patients, applicable in daily practice. Knowledge of the patient's medical history is crucial to better interpret the measurement.