Clinical outcomes and phenotypes of respiratory failure in older subjects admitted to an acute care geriatric hospital ward.

Respiratory failure (RF) is frequent in hospitalized older patients, but was never systematically investigated in large populations of older hospitalized patients. We conducted a retrospective administrative study based on hospitalizations of a Geriatrics Unit regarding 2014, 2015, and 2016. Patients underwent daily screening for hypoxia. Hospital discharge records were coded through a standardized methodology. RF, defined as documented hypoxia on room air, was always coded, whenever present. We investigated how RF affected clinical outcomes, whether RF grouped into specific comorbidity phenotypes, and how phenotypes associated with the outcomes. RF was coded in 48.6% of the 1,810 hospitalizations. RF patients were older and more frequently had congestive heart failure (CHF: 49 vs 23%), chronic obstructive pulmonary disease (COPD: 27 vs 6%), pneumonia (14 vs 4%), sepsis (12 vs 7%), and pleural effusion (6 vs 3%), than non-RF patients. RF predicted longer length of stay (a-Beta 2.05, 95% CI 1.4-2.69; p < 0.001) and higher in-hospital death/intensive care units (ICU) need (aRR 7.12, 5-10.15; p < 0.001) after adjustment for confounders (linear and Poisson regression with robust error variance). Among RF patients, cerebrovascular disease, cancer, electrolyte disturbances, sepsis, and non-invasive ventilation predicted increased, while CHF and COPD predicted decreased in-hospital death/ICU need. The ONCO (cancer) and Mixed (cerebrovascular disease, dementia, pneumonia, sepsis, electrolyte disturbances, bedsores) phenotypes displayed higher in-hospital death/ICU need than CARDIO (CHF) and COPD phenotypes. In this study, RF predicted increased hospital death/ICU need and longer hospital stay, but also reflected diverse underlying conditions and clinical phenotypes that accounted for different clinical courses.

Contribution of clinical severity and geriatric risk factors in predicting short-term mortality of older hospitalized pneumonia patients: the Pneumonia in Italian Acute Care for Elderly units (PIACE) study.

BACKGROUND: Clinical severity of pneumonia in older persons increases the risk for short-term mortality. Comprehensive geriatric assessment (CGA) may provide further insight in prognostic stratification. AIMS: To investigate whether CGA may improve prognostic stratification among older patients with pneumonia admitted to hospital. METHODS: Our series consisted of 318 consecutive patients hospitalized for pneumonia in a multicenter observational study. Disease severity was assessed by Sequential Organ Failure Assessment (SOFA) and Pneumonia Severity Index (PSI). CGA included the occurrence of delirium, Basic Activities of Daily Living (BADL) disability, cognitive impairment at Short Portable Mental Status Questionnaire (SPMSQ) and overall comorbidity assessed by Cumulative Illness Rating Scale (CIRS). The outcomes were in-hospital and post-discharge 3 month mortality. Statistical analysis was carried out by Cox regression, area under receiver operating curve (AUC) and net reclassification index (NRI). RESULTS: Overall, 53 patients died during hospitalization and 52 after discharge. Delirium, SOFA score and admission BADL disability were significant predictors of in-hospital mortality. SOFA score, CIRS, previous long-term oxygen therapy and discharge BADL dependency significantly predicted post-discharge mortality. The accuracy of SOFA in predicting in-hospital and post-discharge mortality was fair (AUC = 0.685, 95% CI = 0.610-0.761 and AUC = 0.663, 95% CI = 0.593-0.734, respectively). BADL dependency and delirium improved predictive accuracy for in-hospital mortality (ΔAUC = 0.144, 95% CI = 0.062-0.227, p < 0.001), while pre-admission oxygen therapy, CIRS and BADL dependency improved predictivity for 3 month mortality (ΔAUC = 0.177, 95% CI = 0.102-0.252, p < 0.001). DISCUSSION: Among older pneumonia patients, prognostic stratification obtained by clinical severity indexes is significantly improved by CGA risk factors. CONCLUSIONS: CGA provides important information for prognostic stratification and clinical management of older pneumonia patients.

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.