ArticleJournal of hospital medicine2026
Effect of timing of morning blood draws on sleep quantity and quality in hospitalized patients.
Article in Journal of hospital medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSleep deprivation significantly impacts millions of hospitalized patients and is a critical factor in their recovery process. One major contributor to sleep disturbances is early morning blood draws.
objectiveThis study investigated the effect of delaying early morning blood draws by 2 h on both sleep quality and quantity.
methodsIn this quasi-experimental study, we recruited adult medical patients admitted to two similar acute medical units. Patients in one unit were assigned to have their routing morning blood draws at the usual time of 4:00 a.m., while those in the other unit had their blood draws delayed until 6:00 a.m. Primary outcomes of sleep quality and quantity were evaluated using two primary measures: the Richards-Campbell Sleep Questionnaire (RCSQ) and self-reported sleep duration.
resultsA total of 128 patients were included (64 in the 4:00 a.m. group and 64 in the 6:00 a.m. group). The timing of blood draws was significantly associated with sleep quality, with a higher mean sleep quality score in the 6:00 a.m. group of 63.7 (standard deviation [SD] = 21.8) compared with a mean of 53.2 (SD = 22.1) (p = .006) in the 4:00 a.m. group. Additionally, the 6:00 a.m. group averaged 7.0 h of sleep (SD = 2.6), while the 4:00 a.m. group averaged 5.9 h (SD = 2.5) (p = 0.02). CONCLUSIONS AND RELEVANCE: This study found that among hospitalized adult patients, later morning blood draw times were associated with better sleep quality and longer sleep duration compared with earlier morning blood draw times.
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