Non-influenza respiratory viruses may overlap and obscure influenza activity.

OBJECTIVE: To report the number and timing of influenza A isolates, as well as overlapping respiratory viruses. Co-circulating respiratory viruses may obscure the determination of influenza activity. DESIGN: Prospective clinical surveillance for the new onset of respiratory illness followed by viral cultures during seven separate influenza seasons. SETTING: The Wisconsin Veterans Home, a skilled nursing facility for veterans and their spouses. RESULTS: Influenza A isolates were encountered in greater numbers than non-influenza A isolates during three seasons. Seasonal variability is striking. In December 1992, we identified a large outbreak of respiratory illness. Influenza type B was cultured from 102 residents. In December 1995, influenza A was cultured from 285 people in Wisconsin. At that time, we identified outbreaks of respiratory illness in two of our four buildings. Based on statewide data, we suspected an influenza outbreak; however, 26 isolates of parainfluenza virus type 1 were cultured with no influenza. The potential importance of culturing at the end of the season was demonstrated in 1991-1992 when an outbreak of respiratory syncytial virus (RSV) overlapped and extended beyond influenza A activity. CONCLUSIONS: When interpreting new clinical respiratory illnesses as a basis for declaring an outbreak of influenza A, clinicians should realize that co-circulating respiratory viruses can account for clinical illnesses. Clinicians might utilize healthcare dollars efficiently by performing cultures to focus the timing of influenza A chemoprophylaxis. Cultures could be performed when clinical outbreak criteria are approached to confirm an outbreak. Culturing of new respiratory illness could begin again before the anticipated discontinuation of prophylaxis (approximately 2 weeks).

Iron status in atrophic glossitis: a pilot study.

We studied the relationship between laboratory markers of iron status and atrophic glossitis diagnosed clinically and documented with photographs. Nine subjects with glossitis underwent determination of CBC, ferritin, iron, and iron binding capacity. Five of the subjects had laboratory evidence suggesting iron deficiency.

Low serum folic acid levels in a nursing home population: a clinical experience.

Four hundred fifty-five residents of the Wisconsin Veterans Home had fasting serum specimens obtained for folic acid as part of standard practice. Twenty-nine percent were taking folic acid supplements. Six percent (n = 28) were taking phenytoin, a folate antagonist. No resident receiving a folate supplement (400 mcg/day) had a low serum folic acid level. This finding may be important for practitioners selecting a dose of folic acid for nursing home patients. Of the 325 residents not receiving a folate supplement, nine (3%) had low folic acid levels (< 2.5 ng/mL). Two of the nine were receiving phenytoin. Five were characterized by staff as eating well. As low serum levels are preventable with a multivitamin, we believe that supplementation with a multivitamin containing 400 mcg folic acid/day should be considered in nursing home residents.

Nutritional correlates of atrophic glossitis: possible role of vitamin E in papillary atrophy.

Atrophy of the filiform papillae of the tongue is a sign of malnutrition. However, papillary atrophy has not been correlated with laboratory indices of nutritional status. We studied photographs of tongues from 30 elderly subjects and determined the percentage of normal papillary development (%NPD) relative to a reference photograph. We also determined 16 nutritional blood levels and used stepwise multiple linear regression to examine their relationship to %NPD. We found that %NPD correlated significantly (p < 0.0031) with levels of vitamin E and prealbumin, but not with 14 other laboratory indices. Subjects with overt atrophic glossitis (%NPD < 50%) tended to have multiple nutritional deficiencies. The high correlation of plasma vitamin E levels with %NPD may be related to its role as an antioxidant and in the maintenance of cellular membrane integrity.

Self-reported hearing difficulty and audiometric thresholds in nursing home residents.

BACKGROUND: Nursing home practitioners usually assess the general health and functional abilities of each resident at the time of admission. If audiometric screening is not routinely available, assessment of the resident's hearing status will probably consist only of asking questions about hearing difficulty. In this study we explored which questions, when answered positively, were most strongly associated with moderate or severe hearing impairment. METHODS: A total of 198 newly admitted nursing home residents answered questions regarding their hearing in common listening situations, and then underwent audiometric assessment. RESULTS: Fifty-four percent of the residents had a pure tone average hearing level of > 25 dB at 500, 1000, and 2000 Hz and were therefore considered impaired. A single general question regarding hearing had a sensitivity of 69% in determining the presence of such impairment. Three specific questions which assessed hearing--in a group, while watching television, and while on the telephone--had a collective sensitivity of 83%. Asking the three questions was significantly (P = .003) more effective than asking only the general question. CONCLUSIONS: A set of specific questions significantly improved the identification of residents whose hearing loss affected their daily living activities compared with the use of a single hearing loss question.

Follow-up of mild hypothyroidism in a nursing home.

The course of untreated mild hypothyroidism was followed in 67 nursing home residents (mean age 78 years). The diagnosis was based on a normal free thyroxine index (FTI) and elevated thyrotropin concentration (TSH 4.6 to 15.0 microIU/mL, nl less than or equal to 4.5 microIU/mL. FTI and FSH were measured in follow-up 42-378 (mean 161) days after the diagnosis of mild hypothyroidism had been made. In 45 patients initial TSH was less than 6.8 microIU/mL; in 23 of these subjects TSH returned to normal during the observation period, whereas in 22 TSH remained elevated. In all 22 residents whose initial TSH was greater than 6.8 microIU/mL, TSH remained elevated at follow-up. In 4 subjects whose initial TSH concentrations ranged from 5.0 to 9.6 microIU/mL, FTI fell below normal 91-141 days after the diagnosis of mild hypothyroidism was made. Clinical progression of the signs or symptoms of hypothyroidism was not detected in the 4 patients who developed hypothyroxinemia. Three demonstrated positive thyroid antibody titers, and 1 had myasthenia gravis. These observations suggest a need for replacement therapy in debilitated patients with mild hypothyroidism and evidence of thyroid autoimmunity.

Hearing loss in the nursing home. An institutional issue.

One hundred ninety-eight nursing home admissions underwent audiometric assessment and answered questions regarding hearing difficulty in common listening situations. Twenty-four percent demonstrated normal thresholds (0-25 dB) in the speech frequencies with only mild losses at 4000 Hz. Fifty-four percent had normal thresholds through the speech frequencies with moderate to profound losses at higher frequencies, or mild losses (26-40 dB) in the speech frequencies. Such persons would be at risk in daily listening situations. Twenty-two percent had moderate or greater losses (greater than 40 dB) through the entire frequency range. Sixteen percent of this significantly impaired group were not identified as having a hearing loss by either the admitting RN or physician. Sixty percent of residents reported trouble in a group if they could not see the speaker's face, when watching television, and/or when using the telephone. The data indicate that a systematic hearing screening program is the most reliable means of identifying hearing loss and functional hearing handicap on an individual basis. The high prevalence of hearing problems suggests that this handicap also needs to be addressed from the perspective of institutional policy. Staff training and environmental modification should be undertaken to give hearing support to the entire nursing home population.