Prospective, multicenter registry in patients undergoing commercially available balloon expandable valve implantation. The registry will consist of 3 phases:

Prospective determination of baseline Status Quo (3 months):

Documentation of treatment pathways and endpoints of "routine" patients without educational program

Dedicated reflection and training (1 day):

One training session after the observational period to reflect on treatment pathways, exchange between valve coordinators involved, and develop improvements.

Implementation of tailored changes (2 months):

Implementation of the changes developed in the training.

Determination of the effect (3 months):

Coordinator measures optimization changes and determines effects.

Along the severe aortic stenosis (sAS) treatment pathway there are delays that may impact quality management and hospital efficiency. A dedicated valve coordinator, interfering with all stages of patient handling throughout the hospital may increase the efficiency of the sAS patient flow, accelerate decision making and clinical outcomes while at the same time decreasing resource consumption.

The hypothesis is that the implementation of a dedicated valve coordinator will improve the patient flow of sAS patients scheduled to undergo TAVI, their outcome, patient and physician satisfaction and will optimize costs.

In total, three centers across Germany (Munich, Düsseldorf, Bad Bevensen) will participate.

Inclusion Criteria:

• elective patients with a diagnosis of severe symptomatic aortic stenosis and admitted for TAVI

Exclusion Criteria:

• patients not providing written informed consent

Consecutive elective patients with a diagnosis of severe symptomatic aortic stenosis and admitted for TAVI attending one of the participating centers for commercially available balloon expandable valve implantation will be recruited.

no IPD will be shared