Objectives: To investigate the impact of oral care on thirst perception and dry mouth assessments.

Research Design: Single-centre observational study.

Setting: Intensive care unit in a university hospital.

Main Outcome: We assessed thirst perception and dry mouth in adult patients before and after oral care. Thirst perception was assessed using a numerical rating scale and dry mouth was assessed using an oral moisture checking device and the modified Revised Oral Assessment Guide including tongue, mucous membranes and saliva.

Results: Eighty-six patients were included. After oral care, thirst scores decreased by 1 (0 to 3, p < 0.01) and remained low only for one hour. Oral moisture was maintained at a normal level ≥ 27.0%, and mROAG was at a low level ≤ 4 before and after the oral care. The numerical rating score did not correlate with oral moisture (ρ = -0.01, p = 0.96) or the modified revised oral assessment guide (ρ = 0.09, p = 0.42). Among patients with thirst, 60 (70%) patients complained of thirst at the assessment timepoints, but only 17 (20%) patients complained independently.

Conclusion: Thirst perception was dissociated from dry mouth before and after oral care. Thirst must be frequently assessed and treated.

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http://dx.doi.org/10.1016/j.iccn.2021.103073DOI Listing

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