Nijmegen acute subarachnoid hemorrhage calculator

The artifical intelligence based acute subarachnoid hemorrage outcome prediction tool. For details please see the following paper: Prediction Models in Aneurysmal Subarachnoid Hemorrhage: Forecasting Clinical Outcome With Artificial Intelligence .

Modified Fisher Grade/Scale


Please contact the corresponding author if you have any questions or feedback about this calculator. Because the local deep learning algorithm on which our model relies is limited in terms of extrapolation to unseen, extreme input variable values, predictions made from inputs not available in the derivation data, such as aneurysmal subarachnoid hemorrhages originating from aneurysms from the choroidal or pericallosal arteries, should be cautiously interpreted. The results of predictions made with less frequent occuring input variables in our training models (as marked with an asterisk (*)) should be considered with extra care. This calculator is designed for education and research purposes only and is not intended in any way to substitute for professional medical advice, consultation, diagnosis, or treatment. This calculator is provided as is with no warranty and without obligation by any of the authoring institutions to provide accompanying services or support. The entire risk as to the quality and performance of the calculator is with those using the calculator. This calculator has been developed based on one Dutch patient population and still needs to be validated in other cohorts. If you are willing to validate the presented outcome prediction tool, please contact the corresponding author .

This calculator only predicts death during hospitalization, functional impairment during a follow-up of 6 months after onset and the occurrence of delayed cerebral ischemia. The calculator does not address other potential benefits of new, sometime experimental neurosurgical interventions. In addition, it does not provide information on quality of life improvement or diminishment. Any individual patient may also have other medical problems not included in the model that could affect the definite outcomes. Therefore, although a prediction score can be used as a calculator to facilitate physician and patient discussions when deciding treatment options, it should not be solely relied upon to determine care decisions for any medical condition. Physicians should exercise their own independent clinical judgment and shared decision-making when using the calculator.

By using the calculator, you have acknowledged that: you have read and understood this disclaimer, and you agree to be legally bound by this disclaimer. If you do not agree to be legally bound by this disclaimer, you may not use the calculator.

Last updated: 2020-08-03