Rhythmic Respiratory Muscle Stimulation (RRMS): A Conceptual Framework for Consciousness Recovery in ICU Patients

This work introduces Rhythmic Respiratory Muscle Stimulation (RRMS) as a conceptual framework for recovery of consciousness in ICU patients with prolonged disorders of consciousness (pDOC). Current management of pDOC relies on supportive care, while effective neuromodulatory therapies are lacking. RRMS leverages the natural coupling between respiration and brain oscillations. By applying rhythmic stimulation to respiratory muscles, it is hypothesized that brainstem–cortical networks can be re-engaged, restoring thalamo-cortical synchrony and promoting recovery of awareness. The approach is non-invasive, low-cost, and ethically urgent. In the United States, annual long-term care costs for a single patient in pDOC exceed 200,000 USD, while developing and testing a pilot RRMS prototype would require only ~10,000 USD. This highlights the strong economic and humanitarian rationale for translational research. RRMS builds on evidence from neuroscience, respiratory physiology, and rhythm-based neuromodulation, with prior applications in military resilience, sports science, and basic research — yet it has not been systematically explored in ICU care. We call for collaborative efforts to bring this framework into pilot studies and first-in-human trials, offering a new therapeutic pathway for patients who cannot advocate for themselves.