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Health workforce planning is considered as a main tool for health care effectiveness. In spite of this, studies applying planning in the Clinical Nutrition area are still scarce. This fact demands for research that may fill the knowledge vacuum through scientific contributions. Objective: To propose reference parameters for measuring staffing needs of clinical dietitians in hospital units, in comparison to the established parameters stated by Resolution CFN 380 from 2005. Methods: Descriptive applied field research, using a quantitative approach, in three public hospitals considered as sites of good practices in nutrition in Sao Paulo city. A continuous time and motion study was used to measure the workload, through observation of the daily work of 19 clinical dietitians. This systematic observation was performed through 24 typical working days. The workload measurement tool was purposefully designed for this study and its validity and appropriateness to the specific target population was verified beforehand. Data analysis used central tendency and variance measurements, applying t-Student tests at the 5% significance level. Results: A total of 3931 observations were performed. During the workday the dietitians spent: 72.8% in interventions (9.5 % in direct care and 63.3% in indirect care), 0.6% in unit-related activity, 9.1% in personal activities, 0.6% in absence, 11.8% in displacement, 2.6% in standby time, 0.6% in administrative meetings and in 1.9% was not observed. The mean care time used to assist patients in six hours corresponded to 7.6 minutes in the primary care level, 16.1 minutes in the secondary and the tertiary 28.6 minutes, which is equivalent to dietitian-to-patient ratio of 48: 1, 22: 1 and 13: 1, respectively. The mean workload of the dietitian staff corresponded,to 17.4 minutes, in 360 minutes. The dietitian-to-patient ratio was lower than recommended and statistically significant.. The parameters obtained in this research showed are lower than recommended, with statistically significant differences. Conclusion: The study results are useful to enhance knowledge in two areas: firstly, it provides data about the dietitian work process, most significant interventions performed in inpatient care and the mean time spent by these professionals. The second aspect refers to the workload identification of dietitian staff, an important parameter for the calculation the dietitian staff, in inpatient care services.

Carga de trabalho do nutricionista clínico: estudo de tempo e movimento contínuo em unidades de internação hospitalar