Post-Transplant Sleep and Circadian Disruption: Links to Rejection and Quality of Life
Abstract
Background: Sleep and circadian disruption are highly prevalent after transplantation but seldom managed as primary targets. At the level of analysis it is possible to show that they constitute a coherent, modifiable risk domain with consequences for functioning and, in specific contexts, survival.
Methods: We conducted a structured narrative synthesis restricted to the studies spanning kidney, liver, lung and heart transplantation and allogeneic HSCT. Eligible reports used validated sleep/circadian measures and outcomes (fatigue, social participation, health-related quality of life [HRQoL], rejection, relapse, or mortality), with longitudinal and within-person effects prioritised.
Results: Across organs, disturbed sleep affected roughly one third to one half of recipients, consistently exceeding healthy peers. In kidney pathways, poor sleep related independently to lower “individual strength”, curtailed participation and poorer physical and mental HRQoL, with sex- and age-contingent patterns and treatment correlates (notably calcineurin inhibitors). Liver and lung studies highlighted depression, symptom burden and anxiety as dominant associates; family support was protective in liver cohorts. In HSCT, pre-transplant sleep disruption predicted higher risks of relapse and mortality over six years, while actigraphy and daily diaries showed a post-treatment nadir in sleep (Days +7–14) and same-day coupling between poorer prior-night sleep, sedentary time and evening fatigue. In heart transplantation, donor procurement during “activation” hours (day–evening) was associated with inferior long-term survival compared with “repression” hours (night–morning), aligning clinical signals with chrono-immunological plausibility.
Conclusions: Sleep and circadian alignment are systems-level mediators, not epiphenomena. Immediate priorities are routine screening; brief, behaviourally anchored interventions (exercise, CBT-I, morning light); ward-level nocturnal hygiene; and timing-aware audit in cardiac pathways, while organ-specific randomised trials and multicentre replications proceed.
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