THE INTERRELATIONSHIP BETWEEN PHYSIOLOGICAL STRESS RESPONSES, MENTAL HEALTH OUTCOMES, AND NURSE-LED INTERVENTIONS IN HOSPITALIZED PATIENTS: A REVIEW

Abstract

Hospitalization exposes patients to multiple physiological and psychological stressors that may influence recovery, treatment engagement, and post-discharge outcomes. This review examines the interrelationship between physiological stress responses, mental health outcomes, and nurse-led interventions in hospitalized patients. Hospital-related stress may arise from acute illness, invasive procedures, pain, sleep disruption, environmental noise, isolation, uncertainty, loss of autonomy, and separation from social support. These stressors activate neuroendocrine, autonomic, inflammatory, metabolic, and behavioral pathways, including hypothalamic-pituitary-adrenal axis activity, sympathetic nervous system activation, altered cortisol regulation, immune dysregulation, and sleep disturbance. These physiological processes are closely linked with anxiety, depression, fear, post-traumatic stress symptoms, impaired coping, delirium risk, and reduced quality of life. The relationship is bidirectional, as psychological distress may intensify pain perception, autonomic arousal, sleep fragmentation, inflammatory burden, and reduced participation in care, while physiological instability may increase emotional vulnerability. Nurse-led interventions provide a practical strategy for addressing this combined burden through continuous assessment, therapeutic communication, psychoeducation, sleep promotion, pain support, relaxation techniques, mindfulness-based strategies, music therapy, early mobilization, family involvement, and multidisciplinary coordination. Integrating physiological and mental health assessment into routine nursing practice may improve patient centered inpatient care, reduce stress-related morbidity, and support recovery across medical, surgical, critical care, pediatric, oncological, and chronic disease populations.