Prognosis of geriatric patients with severe kidney disease.

Over three million French people present a severe chronic kidney disease, among which there is a high prevalence of elder subjects. We conducted a prospective monocentric study in a geriatric acute care ward. The aims were to determine the short-term prognosis of patients with severe chronic kidney disease and to determine the factors associated with mortality at six-months. METHODS: Patients 75 years of age and older, with an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2 (chronic kidney disease epidemiology CKD-EPI) were recruited. A comprehensive geriatric assessment was performed at hospital discharge. Comprehensive geriatric assessment was performed: Activities of daily livings and Instrumental activities of daily livings scores, of the risk of pressure sore with Exton-Smith scale, the cognitive status with MMSE score, nutritional status according to Mini-nutritional assessment short form and albuminemia, comorbidities with Cumulative illness rating scale, number of drugs in presciption and living status. Six months follow-up was performed to assess vital status and evolution of the eGFR. RESULTS: Sixty-seven patients were included, mean age 88.6±4.82 years with a mean eGFR of 21.3±6 mL/min. Mortality rate at six months was 36%. Multivariate analysis showed that a high CIRS score (RR=1.52; IC 95% 1.05-2.19) and a decline of creatinine clearance≥ 2 mL/min (4.72; 1.27-17.52) were predictive of mortality. On the opposite, a high MNA-SF score was protective (0.76; 0.62-0.94). CONCLUSION: Prognosis of geriatric patients with severe chronic kidney disease is poor. Comprehensive geriatric assessment helps to assess short-term prognosis, in a focus of person-centered care.

Energy requirements in hospitalized elderly people.

OBJECTIVES: To estimate energy intake and energy expenditure (EE) in elderly hospitalized patients recovering from an acute illness. DESIGN: Cross-sectional evaluation of the disparity between energy intake and expenditure. PARTICIPANTS: Ninety geriatric patients (mean age+/-standard deviation 79.7+/-7.5) admitted to acute care or rehabilitation units. MEASUREMENTS: Patients' energy intake and resting EE (REE) were measured over a 3-day period. Blood samples were taken to determine C-reactive protein (CRP), creatinine, and albumin concentrations and to check renal function. RESULTS: Energy intake was higher than REE by a factor of 1.29, but it was lower than the energy requirement. Energy intake, adjusted for differences in body weight, was independent of sex, highest in those who were malnourished (defined as a body mass index (BMI) <21), and lowest in patients who scored poorly on the Mini-Mental State Examination. Energy intake and REE were independent of plasma CRP, creatinine, and albumin concentrations, as well as the initial diagnosis. REE was similar in men and women, at 18.8 kcal/kg per day. REE was 21.4 kcal/kg per day in patients with a BMI of 21 or less and 18.4 kcal/kg per day in those with a BMI greater than 21 kg/m2. The Harris-Benedict equation accurately predicted mean REE. CONCLUSION: The mean REE of the geriatric patients studied was 18.8 kcal/kg per day, whereas energy intake was just sufficient to cover minimal requirements. Thus, hospitalized elderly patients are likely to benefit from higher calorie intake.