[Using the DFree device for balanced bladder management]

Bladder dysfunctions, regardless of their origin, have significant psychosocial effects. Depending on the existing disorder and bladder functionality, behavioural therapy and supporting tools are the first choice of therapy but the need for medication, intervention and surgery is significant.

The DFree ultrasonic sensor enables sonographic measurement of bladder filling and feeds this back to the sensor wearer via an app. The primary outcome of the study was the influence of the DFree on the quality of life of the patients. Secondary endpoints were usefulness and user-friendliness of the DFree device as well as the self-reported degree of autonomy.

In the present pilot study, 18 urological patients with various bladder dysfunctions were equipped with the DFree ultrasonic sensor for at least 12 hours daily over a period of three months. The parameters were collected at baseline (T1) and at end of the study (T2) using the Kings Health Questionnaire (KHQ) and the German version of the Client Satisfaction Questionnaire (ZUF-8) (quantitative data) as well as guided interviews (qualitative data).

Improvement in bladder dysfunction based on the KHQ could not be statistically confirmed. However, the average value based on the ZUF-8 showed satisfaction with the DFree. In the interviews at T2, the participants gave a positive feedback with specific suggestions for improving user-friendliness. The device was described as helpful and easy to use.

The DFree ultrasonic sensor is a new technical tool in the treatment of bladder dysfunctions. Improving specific technical details could increase the user-friendliness as well as the usefulness of the device.