Aim: The aim ofthe study consisted in content validation of the defining characteristics, and related factors of the nursing diagnosis of Deficient fluid volume[Dehydration] (00027), from the perspective of neonatal nurses. Design:Content validation study. Methods: The defining characteristics of the nursing diagnosis of Deficient fluid volume[Dehydration] (00027) were evaluated with the help of the Fehring Diagnostic Content Validity Model.The set consisted of 125 experts/nurses. The significance of the defining characteristics was rated by the nurses on a Likert scale from 1 to 5. Data collection was carried out from March to September 2016. Results:seven characteristics from 32 were designated primary defining characteristics by the experts: decreased urine output, sunken fontanelle, change in skin turgor, dry mucous membranes, increased urine concentration, elevated haematocrit, and general appearance of exhaustion. 25characteristics were designated secondary defining characteristics;12 of which were characteristics from NANDA–I.Items such as: constipation, decreased pulse volume, cramps, absence of tears, and abdominal distension achieved a weighted score under 0.50. All from the group ofrelated factors were defined as secondary by the experts. Conclusion:Theset of experts regarded the primary significant characteristics for the determination of the nursing diagnosis of Deficient fluid volume[Dehydration] in newborns to consist inseven defining characteristics. All related factors were regarded to be secondary.

The Institute of Nursing Faculty of Public Policies in Opava Silesian University in Opava Czech Republic

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