Andrew R. Stevens

Papers

Total Citations

H-Index

About

Andrew R. Stevens is a leading researcher in neurocritical care and cerebrovascular physiology, best known for pioneering non-invasive methods to assess cerebral autoregulation in brain-injured patients. His most cited work, a 2018 pilot analysis, introduced a groundbreaking approach to predict the pressure reactivity index (PRx)—a gold-standard measure of cerebrovascular reactivity—using transcranial Doppler (TCD) ultrasound. By developing the systolic flow index (Sx_a) and mean flow index (Mx_a) from continuous middle cerebral artery blood flow recordings, Stevens demonstrated that invasive intracranial pressure monitoring could potentially be replaced or supplemented with bedside Doppler techniques. This work, cited 41 times, has significant implications for safer, more accessible monitoring of traumatic brain injury patients. Stevens’ research bridges clinical neuroscience and biomedical engineering, offering practical tools for real-time assessment of cerebral hemodynamics. His contributions are shaping the future of non-invasive neuromonitoring, reducing patient risk while maintaining diagnostic accuracy. For students and researchers, Stevens exemplifies how innovative data analysis can transform critical care, making complex physiological monitoring more widely available in resource-limited settings.