"Herzflimmern" is a studentsproject wich overhauls and improves the users interface an experience of an medical web application for treating and monitoring heart diseases.
Before starting to redesign, the first step was to test and tryout the web application. While testing the application, it is important to take notes and write down possible solutions and ideas in a brainstorm like session.

It is key to make a flowchart of the application, to visualize where excess interactions and such occur.
Before Rework
After narrowing down the potential problems, a paper based prototyp was build for validation. With the help of personas, the protoyp was used for testing with the following research questions. Those questions are split two different issues: usability and navigation.
As one can see from the personas, the only users for this application, are nurses and doctors. For the user test nurses and doctors from the "Uniklinikum Augsburg", wich fittet the personas quite well, were volunteering to participate in testing the prototype.
As this application is mainly used in medical surroundings, the application had to be used in different light and stress scenarios. In the operation rooms for example, the screen would usually be two times further away from the user then in a office environment. Therefore the web application has to be designed with a bigger emphasize on contrast and readability.
Do testpersons use the implemented shortcuts on the dashboard?

Do they navigate directly into a patient´s file from the dashboard?

Do they use the inspector to open the maps?

Do they use the breadcrumbs to jump back one or more sites?
Are testpersons able to find certain informations easy and fast?

Can they find out the diagnosis of a patient?

Can they open the maps and handle the comparison tool?
Test Methods
After narrowing down the problems, a prototyp was built with figma. It solves the biggest issues in the navigation by simplifying the interface and added breadcrumbs to furthermore streamline the navigation though the web application.
To ensure readability in any environment, a styleguide was formed with the highest possible amount of contrast in mind. This prototype was then used for testing and evaluating the improvments of the interface.
Test Scenario
Half of the tests were done in a treatment room at "Uniklinikum Augsburg". Two laptops were placed in front of the test person. One with the prototype and the other with the tasks on the screen. Laterally in front of the test person cameras were placed to film each persons reactions. The other half of the tests with the paramedics followed the same principles and were performed in the rescue central in "Gräfelfing".
To evaulate the efficiency of the design, the participants had to do 5 different timed tasks. The severity of each designflaw was determined by the time the participants took to finish each task and how my users had this problem.
After evaluating each task it was possible to determine wich aspects of the design were easy to use and where adjustments needed to be made. For that an issue table with all the emerged problems has been made.

The seriousness (scale from 1 to 5, where 5 is the most serious problem) indicated how sever these problems were.