The Severity of Acute Illness and Functional Trajectories in Hospitalized Older Medical Patients.

BACKGROUND: Acute diseases and hospitalization are associated with functional deterioration in older persons. Although most of the functional decline occurs before hospitalization in response to the acute diseases, the role played by comorbidity in the functional trajectories around hospitalization is unclear. METHODS: Observational prospective study of 696 elderly individuals hospitalized in two Italian general medicine wards. Functional status of the elderly patients at 2 weeks before hospitalization (baseline), at hospital admission, and at discharge was measured by the Barthel Index. Comorbidity was measured at admission by the Geriatric Index of Comorbidity (GIC), a tool mostly based on illness severity. The association of GIC with changes in functional status before hospitalization (between baseline and admission), during hospitalization (between admission and discharge), and in the overall period between baseline and discharge was assessed by logistic regression analyses. Hospitalization-associated disability (HAD) was defined as a functional decline between baseline and discharge. RESULTS: Illness severity (GIC 3-4 vs 1-2: odds ratio [OR] 2.2, 95% CI [confidence interval] 1.5-3.3, p < .0001) and older age significantly predicted prehospital functional decline (between baseline and admission). Illness severity (OR 1.9, 95% CI 1.2-3, p = .004) and older age were also predictive of HAD, even after adjustment for each coded primary discharge diagnosis. After adjustment for the occurrence of prehospital functional decline, however, illness severity and older age were not predictive of HAD anymore. CONCLUSIONS: The severity of illnesses was strongly associated with adverse functional outcomes around hospitalization, but frailty, intended as functional vulnerability to the acute disease before hospitalization, was a stronger predictor of HAD than illness severity and age.

Acute functional decline before hospitalization in older patients.

AIMS: Acute diseases and related hospitalization are crucial events in the disabling process of elderly individuals. Most of the functional decline occurs in the few days before hospitalization, as a result of acute diseases in vulnerable patients. The aim of the present study was to identify determinants of prehospital components of functional decline. METHODS: This was a prospective observational study carried out in three acute geriatric units and two general medicine units of three Italian hospitals. The participants were 1281 patients aged 65 years or older admitted to hospital for acute illnesses and discharged alive. Functional status 2 weeks before hospitalization (preadmission) and at hospital admission was measured by the Barthel Index to identify patients with prehospital decline. In this group of decliners, the percentage extent of prehospital decline (PEPD) was also calculated. RESULTS: Prehospital decline occurred in 541 (42.2%) patients, who were hospitalized mostly in geriatric wards (55.6%). Older age (odds ratio [OR] 1.06, 95% confidence interval [CI] 1.04-1.08) and dementia (OR 2.8, 95% CI 1.4-5.4) were significant predictors of prehospital decline, whereas a high preadmission function was protective (OR 0.992, 95% CI 0.987-0.997). Pulmonary disease as primary discharge diagnosis was also associated with prehospital decline (OR 1.8, 95% CI 1.3-2.5) after adjustment for age, diagnosis of dementia and preadmission function. Amongst decliners, a low preadmission function and the origin of patients (from emergency rooms or other hospital units) were associated with larger PEPD. CONCLUSIONS: Using a clinically meaningful change to define decline, disease-related prehospital disability is observed mainly in persons with low preadmission function, older age and dementia.

Thyroid hormones as predictors of short- and long-term mortality in very old hospitalized patients.

BACKGROUND: Although extensively investigated, the prognostic role of thyroid hormone abnormalities in older participants remains uncertain. We investigated the relationship between thyroid hormones and mortality during hospitalization and in a prolonged follow-up in frail older patients. METHODS: A nonconcurrent cohort study was conducted by enrolling 450 participants hospitalized for an acute disease, who were classified into four groups (euthyroidism, hypothyroidism, hyperthyroidism, and low triiodothyronine [T3] syndrome), according to clinical and laboratory data. Multidimensional geriatric assessment variables were considered in order to identify short- and long-term predictors of death. RESULTS: Participants were very old (mean age: 84 years) and frail, as indicated by severely impaired functional status, extensive comorbidity, high prevalence of dementia, and hospital mortality (8%). Prevalence of any thyroid dysfunction was 40.7%; 32% of participants had low T3 syndrome, which was associated with an excess hospital mortality risk (odds ratio: 2.7, 95% confidence interval [CI]: 1.1-6.5; p = .025), adjusted for demographic, clinical, functional, and laboratory data. Conversely, long-term mortality was unrelated to low T3 syndrome. In euthyroid participants, increasing levels of free thyroxine (FT4) were associated with a slightly greater mortality (hazard ratio, CI: 2.12, 0.99-4.54; p = .053) in adjusted Cox regression models. CONCLUSIONS: This observational study on a cohort of very old, frail hospitalized patients gives support to the independent prognostic short-term, but not long-term, role of low T3 syndrome. Moreover, in older euthyroid participants, increasing levels of FT4 are a weak marker of poorer long-term survival. Thyroid hormones may help monitor changes in general health status and predict short- and long-term clinical outcomes in very old, frail patients.

Functional recovery of elderly patients hospitalized in geriatric and general medicine units. The PROgetto DImissioni in GEriatria Study.

OBJECTIVES: To investigate the characteristics of patients who regain function during hospitalization and the differences in terms of functional outcomes between patients admitted to geriatric and general medicine units. DESIGN: Multicenter, prospective cohort study. SETTING: Acute care geriatric and medical wards of five Italian hospitals. PARTICIPANTS: One thousand forty-eight elderly patients hospitalized for acute medical diseases. MEASUREMENTS: Functional status 2 weeks before hospital admission (baseline), at admission, and at discharge, as measured using the Barthel Index (BI). RESULTS: Geriatric patients were older (P<.001) and had lower preadmission functional levels (P<.001) than medical patients. Between baseline and discharge, 43.2% of geriatric and 18.9% of medical patients declined in physical function. In the subpopulation of 464 patients who had declined before hospitalization (between baseline and admission), 59% improved during hospitalization (45% of geriatric and 75% of medical patients), whereas only approximately 1% declined further. High baseline function (odds ratio (OR)=1.03, 95% confidence interval (CI)=1.02-1.04, per point of BI) and greater functional decline before hospitalization (OR 0.95, 95% CI 0.94-0.97, per % point of BI decline) were significant predictors of in-hospital functional improvement; type of hospital ward and age were not. CONCLUSION: Although geriatric patients have overall worse functional outcomes, in-hospital functional recovery may be frequent even in geriatric units, particularly in patients with greater preadmission functional loss and high baseline level of function.

Prognostic stratification of older persons based on simple administrative data: development and validation of the "Silver Code," to be used in emergency department triage.

BACKGROUND: Prognostic stratification of older patients with complex medical problems among those who access the emergency department (ED) may improve the effectiveness of geriatric interventions. Whether such targeting can be performed through simple administrative data is unknown. METHODS: We examined the discharge records for 10,913 patients aged 75 years or older admitted during 2005 to the ED of all public hospitals in Florence, Italy. Using information on demographics, drug treatment, previous hospital admissions, and discharge diagnoses, we developed a 1-year mortality prognostic index. The predictive validity of this index was tested in a subsample of patients independent of the subsample used for its original development. Finally, we tested whether patients stratified by the prognostic index had different mortality when admitted to a geriatrics compared with an internal medicine ward. RESULTS: In the validation subsample, patients with scores of 4-6, 7-10, and 11+ compared with those with scores less than 4 had hazard ratios (95% confidence interval) for 1-year mortality of, respectively, 1.5 (1.3-1.7), 2.2 (1.3-1.7), and 3.0 (2.6-3.4). Patients in the worse prognostic stratum experienced 33% higher mortality when admitted to an internal medicine compared with a geriatrics ward, although mortality was not significantly affected by the type of ward of admission in all other risk strata. CONCLUSIONS: Simple administrative data provide prognostic information on long-term mortality in older patients hospitalized via ED. Patients with worse prognostic index scores appear to benefit from admission in a geriatrics compared with an internal medicine ward.

Limited utility of the subcostal view for the echocardiographic evaluation of left ventricular mass in epidemiological studies of older persons.

BACKGROUND: Epidemiological estimates of left ventricular mass are based on echocardiographic imaging from the parasternal view, which is often unavailable in subjects with obesity or lung disease. This study was undertaken to assess whether the subcostal view is a valid alternative to estimate left ventricular mass in an unselected older population. METHODS: In a cross-sectional study of all the residents in Dicomano, Italy, aged > or =65 years, echocardiography was performed with a systematic attempt to obtain both the parastermal and the subcostal views. RESULTS: The parasternal view was missing in 73/614 participants, 48 of whom were imaged from the subcostal view. In participants imaged from both views, the subcostal view underestimated left ventricular cavity dimension and, consequently, left ventricular mass [79.7 (1.3) vs. 93.3 (1.5) g/m2; p<0.001]. Furthermore, the subcostal view was only 25% sensitive for the diagnosis of hypertrophy. Several multivariate regression models, developed in an equation development subgroup and tested in a validation subgroup, failed to correct the prediction of left ventricular mass based on measures taken from the subcostal view, also after inclusion of demographic, anthropometric, and spirometric covariates. CONCLUSIONS: In unselected older persons, the subcostal view does not improve the accuracy of echocardiographic estimation of left ventricular mass, which remains biased in epidemiological studies.

The diagnosis of heart failure in the community. Comparative validation of four sets of criteria in unselected older adults: the ICARe Dicomano Study.

OBJECTIVES: We sought to compare construct and predictive validity of four sets of heart failure (HF) diagnostic criteria in an epidemiologic setting. BACKGROUND: The prevalence estimates of HF vary broadly depending on the diagnostic criteria. METHODS: Data were collected in a survey of community dwellers who were > or =65 years of age living in Dicomano, Italy. At baseline, HF was diagnosed with the criteria of the Framingham, Boston, and Gothenburg studies and of the European Society of Cardiology (ESC). Left ventricular mass index and ejection fraction, left atrium systolic dimension, lower extremity mobility disability, summary physical performance score, and 6-min walk test were compared between HF and non-HF participants to test for construct validity of each set of criteria. Predictive validity was evaluated with follow-up assessment of cardiovascular mortality, incident disability, and HF-related hospitalizations. Comparisons were adjusted for demographics, comorbidity, and psychoaffective status. RESULTS: Of 553 participants, 11.9%, 10.7%, 20.8%, and 9.0% had HF, according to Framingham, Boston, Gothenburg, and ESC criteria, respectively. In terms of construct validity, Framingham and Boston criteria discriminated HF from non-HF participants better than Gothenburg and ESC criteria across the measures of cardiac function and global performance. The Boston criteria showed a superior predictive validity because they indicated a significantly greater adjusted risk of cardiovascular death (hazard ratio3.9, 95% confidence interval 1.2 to 13.2), incident disability, and hospitalizations in participants with HF. CONCLUSIONS: The Boston criteria are preferable to Framingham, Gothenburg, and ESC criteria for the diagnosis of HF in older community dwellers because they have good construct validity and more accurately predict cardiovascular death, incident disability, and hospitalizations.

Cardiovascular remodeling is greater in isolated systolic hypertension than in diastolic hypertension in older adults: the Insufficienza Cardiaca negli Anziani Residenti (ICARE) a Dicomano Study.

OBJECTIVE: We investigated cardiac and vascular remodeling in an unselected older population with either diastolic hypertension (HTN) or isolated systolic hypertension (ISH). BACKGROUND: Isolated systolic hypertension accounts for a substantial proportion of hypertension in individuals older than 65 years and is strongly associated with an increased risk of cardiac and cerebrovascular events. The exact mechanisms underlying the increased risk associated with ISH and elevated pulse pressure (PP), in comparison with HTN, have not been extensively investigated. METHODS: Community-dwelling residents age >/=65 years in a small town in Italy (Dicomano) were enrolled. Untreated subjects considered in this study included 173 normotensive subjects (blood pressure [BP] <140/90 mm Hg), 95 subjects with HTN (diastolic BP >/=90 mm Hg), and 43 subjects with ISH (BP >/=160/<90 mm Hg). All subjects underwent extensive clinical examination, echocardiography, carotid ultrasonography, and carotid applanation tonometry. RESULTS: Subjects with ISH had higher left ventricular (LV) mass, which was independently related to PP but not to systolic or mean pressures. Both carotid wall cross-sectional area and vascular stiffness were greater in ISH patients than in HTN and normal subjects and were independently related to PP but not to systolic BP. In addition, ISH was associated with a higher prevalence of carotid plaque and more extensive carotid atherosclerosis. CONCLUSIONS: In our community-based elderly population, individuals with ISH had higher prevalences of LV hypertrophy and carotid atherosclerosis than subjects with HTN despite lower mean BP. These findings provide potential pathophysiologic mechanisms underlying the associations of ISH and PP with increased risk of cardiovascular morbidity and mortality.