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Prevent Delirium

Using Artificial Intelligence for better Patient Outcomes


More than 20% of patients aged over 60 suffer from postoperative delirium (POD) after surgery. Symptoms include disorientation, memory loss, difficulty in speech, and behavioural changes. Delirium is often preventable by non-pharmacological interventions for those at risk.

Delirium Leads To

6x Nursing home admissions
14x Risk of dementia

7.4m EUR Average annual cost per hospital

Average length of stay increased by 3 days

Identify Patients with PIPRA

Identify and treat high-risk patients with multi component intervention bundle. Get the benefits:

  • Secure web solution
  • High performance
  • No device required
  • CE-marked
  • Pay per use
  • No installation required
  • Flexible integration (0-100%)
  • Patient data protected
  • Delirium prevention support bundle included
  • Risk assessment in <2 min

Medically Approved in EU (CE-certified)

Medically approved & reimbursed in:

  • Switzerland
  • Austria
  • Finland
  • Ireland
  • Germany
  • Belgium
  • Sweden
  • Portugal
  • France
  • The Netherlands
  • Spain
  • Estonia


“PIPRA proposes a new tool that allows rapid determination of an individual patients risk to develop postoperative delirium after an operation. This is a very exciting and important development which can improve current clinical practice. We will finally be able to not only target resource intensive non-pharmacological preventive interventions to those patients who benefit the most but we will also be able to design clinical trials regarding delirium based on risk groups."

Prof. Dr. med. Luzius Steiner
Head of Anaesthesiology, Universitätsspital Basel

"PIPRA is a huge advancement compared to the usual standard of care. The score that distinguishes between those at risk and those who are not is tremendously helpful."

Dr. med. Henry Perschak
Former Head of the International Medical Center, Klinik Hirslanden Zurich

“In case of surgery, we all expect to recover fully and fast. The reality is often different. PIPRA is applying cutting edge technology to make surgery for all of us safer. PIPRA is a great idea with a great team to make it happen."

Dr. Jürg Wittwer
CEO Touring Club Schweiz

“Patients who develop delirium while in hospital cause a disproportionately high additional workload for nurses. This quickly becomes a vicious cycle. The less time nurses have for a patient, the higher the likelihood that the patient will develop delirium. PIPRA identifies patients who are at risk and thereby enables nurses to initiate and control the relevantclinical care process in a timely and targeted manner. Early intervention through PIPRA can prevent delirium, and decrease workload and stress fornurses. This is an important contribution to healthcare providers, considering the current high volume of work and the problem of scarce personnel resources in the field of nursing."

Martin Zozmann
Pflegeexperte/ Nursing Research Coordinator, Klinik Hirslanden

Our Publications

Exploratory Budget Impact Analysis of a Preoperative Risk Assessment for Postoperative Delirium
Kempers, J.
Preoperative prognostic factors associated with postoperative delirium in older people undergoing surgery: protocol for a systematic review and individual patient data meta-analysis.
Buchan, T.A., Sadeghirad, B., Schmutz, N. et al. Syst Rev 9, 261 (2020). https://doi.org/10.1186/s13643-020-01518-

Want to contact us?

PIPRA AG has developed a cutting-edge AI-based pre-operative risk assessment tool called PIPRA (short for Pre-Interventional Preventive Risk Assessment), to assess the risk of a patient developing POD. The test uses standard medical data, is web-or app-based, and takes less than two minutes to provide a score-based risk assessment. This risk assessment enables doctors, nurses and health services to better personalise their patient’s operative plan and to introduce key clinical interventions to reduce the patient’s risk of developing POD.