title: Vitamin B12 status in hospitalized elderly from nursing homes and the community.
abstract: OBJECTIVE
  To assess vitamin B(12) status in a large sample of hospitalized, inner-city older adults from nursing homes and communities with low socioeconomic status. To determine additionally if hypoalbuminemia can help identify older subjects who are at risk for vitamin B(12) deficiency.
  
  
  METHODS
  A cross-sectional study of hospitalized, inner-city older residents.
  
  
  METHODS
  Acute Care Geriatrics Division, a 75-bed inpatient care service at Our Lady of Mercy Medical Center (OLMMC), a University Affiliate of New York Medical College.
  
  
  METHODS
  A total of 466 older patients (aged 65 to 102 years) from the community (n = 374) and nursing homes (n = 92) who were admitted to the acute care geriatrics division from 1993 to 1996.
  
  
  METHODS
  Patients admitted to the hospital had serum vitamin B(12) and albumin levels determined along with other nutritional parameters, routine blood tests, and physical examinations.
  
  
  RESULTS
  On admission, 19% of hospitalized subjects had marginal serum B(12) levels (200-350 pg/mL) and 6% had low serum B(12) levels (<200 pg/mL). Mean serum B(12) levels did not differ significantly between patients from nursing homes and those from the community. Sixty-four percent 64% of all patients had low serum albumin levels (alb < 3.5 g/dL), with patients from nursing homes showing significantly lower mean serum albumin than patients admitted from the community (P <.000). We observed no positive correlation between serum albumin and serum vitamin B(12) in our older hospitalized patients from either nursing homes or community.
  
  
  CONCLUSIONS
  In this sample of hospitalized older adults, 24% were found to have marginal or low serum B(12) status. Thus, we believe that periodic determinations of serum B(12) would be a useful addition to the general health and nutritional assessment in this age group. Our findings also suggest that hypoalbuminemia is not helpful as a predictor of low B(12) status in older hospitalized persons.
authors.affiliation: Division of Geriatrics and Department of Biomedical Research, Our Lady of Mercy Medical Center, Bronx, New York, USA.
authors.forename: T S
authors.initials: TS
authors.lastname: Dharmarajan
authors.forename: J T
authors.initials: JT
authors.lastname: Ugalino
authors.forename: M
authors.initials: M
authors.lastname: Kanagala
authors.forename: S
authors.initials: S
authors.lastname: Pitchumoni
authors.forename: E P
authors.initials: EP
authors.lastname: Norkus