Short- and long-term prognosis, functional outcome following ICU for elderly

Elderly in the ICU

How to cite this article: Jagathkar G. Elderly in the ICU. Indian J Crit Care Med 2023;27(3):157-158.

Elderly Patients in the Intensive Care Unit

Very old intensive care unit (ICU) patients, aged ≥ 80 years, are by no mean newcomers, but during the last decades their impact on ICU admissions has grown in parallel with the increase in the number of elderly persons in the community. Hence, from being a "rarity," they have now become common and constitute one of the largest subgroups within intensive care, and may easily be the largest group in 20 years and make up 30 to 40% of all ICU admissions. Obviously, they are not admitted because they are old but because they are with various diseases and problems like any other ICU patient. However, their age and the presence of common geriatric syndromes such as frailty, cognitive decline, reduced activity of daily life, and several comorbid conditions makes this group particularly challenging, with a high mortality rate. In this review, we will highlight aspects of current and future epidemiology and current knowledge on outcomes, and describe the effects of the aforementioned geriatric syndromes. The major challenge for the coming decades will be the question of whom to treat and the quest for better triage criteria not based on age alone. Challenges with the level of care during the ICU stay will also be discussed. A stronger relationship with geriatricians should be promoted to create a better and more holistic care and aftercare for survivors.

Retrospective Analysis of Long-Term Survival in Very Elderly (age ≥80) Critically Ill Patients of a Medical Intensive Care Unit at a Tertiary Care Hospital in Korea

Background

The purpose of this study was to evaluate the long-term survival rates of very elderly (age ≥80) critically ill patients admitted to a medical intensive care unit (MICU) at a regional tertiary-care hospital in Korea.

Methods

We retrospectively analyzed data from patients who survived after discharged from the MICU of our hospital. Survival rates at 90 days, 1 year, 2 years, and 3 years were assessed between patients age ≥80 and those age <80. Survival status was evaluated using the National Health Insurance Service data.

Results

A total of 468 patients were admitted, 286 (179 males, 97 females; mean age, 70.18±13.2) of whom survived and were discharged soon after their treatment. Among these patients, 69 (24.1%) were age ≥80 and 217 (75.9%) were age <80. The 90-day, 1-year, 2-year, and 3-year survival rates of patients age ≥80 were significantly lower than those in patients age <80 (50.7%, 31.9%, 15.9% and 14.5% vs. 68.3%, 54.4%, 45.6%, and 40.1%, respectively) (p<0.01). The Kaplan-Meier survival curves showed significantly lower survival rates in patients age ≥80 than in those age <80 (p=0.001).

Conclusion

The poor rates of long-term survival in very elderly (age ≥80) and critically ill patients admitted to an ICU should be considered while managing and treating them.

Frequency of Screening for Weaning From Mechanical Ventilation: Two Contemporaneous Proof-of-Principle Randomized Controlled Trials

OBJECTIVES

It is unknown whether more frequent screening of invasively ventilated patients, identifies patients earlier for a spontaneous breathing trial, and shortens the duration of ventilation. We assessed the feasibility of conducting a large trial to evaluate screening frequency in critically ill adults in the North American context.

DESIGN

We conducted two contemporaneous, multicenter, pilot, randomized controlled trials (the LibeRation from MEchanicaL VEntilAtion and ScrEening Frequency [RELEASE] and Screening Elderly PatieNts For InclusiOn in a Weaning [SENIOR] trials) to address concerns regarding the potential for higher enrollment, fewer adverse events, and better outcomes in younger patients.

SETTING

Ten and 11 ICUs in Canada, respectively.

PATIENTS

Parallel trials of younger (RELEASE < 65 yr) and older (SENIOR ≥ 65 yr) critically ill adults invasively ventilated for at least 24 hours.

INTERVENTIONS

Each trial compared once daily screening to "at least twice daily" screening led by respiratory therapists.

MEASUREMENTS AND MAIN RESULTS

In both trials, we evaluated recruitment (aim: 1-2 patients/month/ICU) and consent rates, reasons for trial exclusion, protocol adherence (target: ≥ 80%), crossovers (aim: ≤ 10%), and the effect of the alternative screening frequencies on adverse events and clinical outcomes. We included 155 patients (53 patients [23 once daily, 30 at least twice daily] in RELEASE and 102 patients [54 once daily, 48 at least twice daily] in SENIOR). Between trials, we found similar recruitment rates (1.32 and 1.26 patients/month/ICU) and reasons for trial exclusion, high consent and protocol adherence rates (> 92%), infrequent crossovers, and few adverse events. Although underpowered, at least twice daily screening was associated with a nonsignificantly faster time to successful extubation and more successful extubations but significantly increased use of noninvasive ventilation in both trials combined.

CONCLUSIONS

Similar recruitment and consent rates, few adverse events, and comparable outcomes in younger and older patients support conduct of a single large trial in North American ICUs assessing the net clinical benefits associated with more frequent screening.

The impact of intensive care admission criteria on elderly mortality

OBJECTIVE

To review systematically the influence of admission criteria on the mortality of elderly patients under intensive therapy.

METHODS

We performed a search on the PUBMED and BIREME databases by using the MeSH and DeCS terms "intensive care units", "patient admission", and "aged" in Portuguese, English, and Spanish. Only prospective and retrospective cohort studies were included. We analyzed the severity score, type of hospital admission, quality of life, co-morbidities, functionality, and elderly institutionalization.

RESULTS

Of the 1,276 articles found, thirteen were selected after evaluation of the inclusion and exclusion criteria. It was observed that the severity score, functionality, and co-morbidities had an impact on mortality. It was not possible to determine which severity score was more suitable.

CONCLUSION

We suggest that analysis of functionality, co-morbidities, and severity scores should be conducted to estimate the elderly mortality in relation to the admission to intensive care units.

Predicting Performance Status 1 Year After Critical Illness in Patients 80 Years or Older: Development of a Multivariable Clinical Prediction Model

OBJECTIVE

We sought to develop and internally validate a clinical prediction model to estimate the outcome of very elderly patients 12 months after being admitted to the ICU.

DESIGN

Prospective, longitudinal cohort study.

SETTING

Twenty-two Canadian ICUs.

PATIENTS

We recruited 527 patients 80 years or older who had a medical or urgent surgical diagnosis and were admitted to an ICU for at least 24 hours.

MEASUREMENTS AND MAIN RESULTS

At baseline, we completed a comprehensive geriatric assessment of enrolled patients; survival and functional status was determined 12 months later. We defined recovery from critical illness as Palliative Performance Scale score of greater than or equal to 60. We used logistic regression analysis to examine factors associated with this outcome. Of the 434 patients (82%) whose Palliative Performance Scale was known at 12 months, 50% had died and 29% (126/434) had a score of greater than or equal to 60. In the multivariable model, we found that being married, having a primary diagnosis of emergency coronary artery bypass grafting or valve replacement, and higher baseline Palliative Performance Scale were independently predictive of a 12-month Palliative Performance Scale score of greater than or equal to 60. Male sex, primary diagnosis of stroke, and higher Acute Physiology and Chronic Health Evaluation II score, Charlson comorbidity index, or clinical frailty scale were independently predictive of Palliative Performance Scale score of less than 60.

CONCLUSION

Approximately one-quarter of very old ICU patients achieve a reasonable level of function 1 year after admission. This prediction model applied to individual patients may be helpful in decision making about the utility of life support for very elderly patients who are admitted to the ICU.

Are elderly patients' opinions sought before admission to an intensive care unit? Results of the ICE-CUB study

BACKGROUND

demand for intensive care of the very elderly is growing, but few studies report inclusion of their opinions in the admission decision-making process. Whether or not to refer a very elderly patient to intensive care unit is a difficult decision that should take into account individual wishes, out of respect for the patient's decision-making autonomy.

METHODS

in 15 emergency departments, patients over 80 years old who had a potential indication for admission to intensive care, and that were capable of expressing their opinion were included. Frequency of opinions sought before referral decision and individual and organisational factors associated were recorded and analysed.

RESULTS

a total of 2,115 patients were included. Only 270 (12.7%) of them were asked for their opinion, and there were marked variations between study centres (minimum: 1.1% and maximum: 53.6%). A history of dementia reduced the probability of a patient being asked for his or her opinion (OR 0.47, 95% CI: 0.25-0.83). Patients' opinion was most often sought when their functional autonomy was conserved (OR 2.10, 95% CI: 1.39-3.21) and when a relative had been questioned (OR 5.46, 95% CI: 3.8-7.88). Older attending physicians were less likely to ask for the patient's opinion (older physician versus younger physician, OR 0.48, 95% CI: 0.35-0.66).

CONCLUSIONS

elderly patients are therefore rarely asked for their opinion prior to intensive care admission. Our results indicate that respect of the decision-making autonomy of elderly subjects in the admission process to an intensive care unit should be reinforced.

Understanding and reducing disability in older adults following critical illness

OBJECTIVE

To review how disability can develop in older adults with critical illness and to explore ways to reduce long-term disability following critical illness.

DATA SOURCES

We searched PubMed, CINAHL, Web of Science and Google Scholar for studies reporting disability outcomes (i.e., activities of daily living, instrumental activities of daily living, and mobility activities) and/or cognitive outcomes among patients treated in an ICU who were 65 years or older. We also reviewed the bibliographies of relevant citations to identify additional citations.

STUDY SELECTION

We identified 19 studies evaluating disability outcomes in critically ill patients who were 65 years and older.

DATA EXTRACTION

Descriptive epidemiologic data on disability after critical illness.

DATA SYNTHESIS

Newly acquired disability in activities of daily living, instrumental activities of daily living, and mobility activities was commonplace among older adults who survived a critical illness. Incident dementia and less severe cognitive impairment were also highly prevalent. Factors related to the acute critical illness, ICU practices, such as heavy sedation, physical restraints, and immobility, as well as aging physiology, and coexisting geriatric conditions can combine to result in these poor outcomes.

CONCLUSIONS

Older adults who survive critical illness have physical and cognitive declines resulting in disability at greater rates than hospitalized, noncritically ill and community dwelling older adults. Interventions derived from widely available geriatric care models in use outside of the ICU, which address modifiable risk factors including immobility and delirium, are associated with improved functional and cognitive outcomes and can be used to complement ICU-focused models such as the ABCDEs.

[Long-term outcome of elderly patients after intensive care treatment]

In general, elderly patients have poorer outcomes than younger patients after intensive care treatment. Diagnosis at admission and high age mainly influence short-term mortality within the first few months after intensive care, while comorbitities and functional status are more pivotal regarding long-term mortality. Furthermore, the main reasons for reduced physical fitness and neurocognitive consequences that often last for many months after intensive care treatment of older patients are described. Many outcome studies show that physical und mental sequelae after intensive care treatment are not only substantial but also unpredictable. Due to the constant improvement of intensive care treatment during recent decades, increasingly more patients survive their acute critical disease. Now it is time to focus on translational research to discover causal relationships between intensive care treatment and morbidity during follow-up to improve the quality of survival.

Changes of health-related quality of life in critically ill octogenarians: a follow-up study

BACKGROUND

Intensivists frequently are concerned about whether octogenarians actually will benefit from ICU admission. We studied changes in health-related quality of life (HRQOL) 6 months following ICU discharge in those patients.

METHODS

We performed a long-term prospective study in a medical-surgical ICU. Patients aged ≥ 80 years (n = 129) and < 80 years (n = 620) admitted for > 48 h were included. We used the Medical Outcomes Study 36-item short form (SF-36) to evaluate HRQOL before ICU admission (using proxies), at ICU discharge, at hospital discharge, and at 3 and 6 months following ICU discharge, using a linear mixed model.

RESULTS

At 6 months after ICU discharge, 49 patients aged ≥ 80 years and 352 patients aged < 80 years could be evaluated. At ICU discharge, physical functioning was far lower than mental functioning (physical component score, 24.9; mental component score, 46.1) in the octogenerians. Most SF-36 dimensions showed significant improvement over time (all P < .01, except role-emotional [P = .038] and bodily pain [P = .77]). In the octogenarians, mean SF-36 scores 6 months after ICU discharge were comparable to baseline in all dimensions. Most dimensions of the SF-36 were not significantly lower in surviving octogenarians at 6 months after ICU discharge compared with the normal population.

CONCLUSIONS

We demonstrated a good recovery of HRQOL in octogenarians surviving critical illness. The findings suggest that denying admission to the ICU should not just rely on old age.

Predictors of mortality and short-term physical and cognitive dependence in critically ill persons 75 years and older: a prospective cohort study

BACKGROUND

The purpose of this study was to identify predictors of 3-month mortality in critically ill older persons under medical care and to assess the clinical impact of an ICU stay on physical and cognitive dependence and subjective health status in survivors.

METHODS

We conducted a prospective observational cohort study including all older persons 75 years and older consecutively admitted into ICU during a one-year period, except those admitted after cardiac arrest, All patients were followed for 3 months or until death. Comorbidities were assessed using the Charlson index and physical dependence was evaluated using the Katz index of Activity of Daily Living (ADL). Cognitive dependence was determined by a score based on the individual components of the Lawton index of Daily Living and subjective health status was evaluated using the Nottingham Health Profile (NHP) score.

RESULTS

One hundred patients were included in the analysis. The mean age was 79.3 ± 3.4 years. The median Charlson index was 6 [IQR, 4 to 7] and the mean ADL and cognitive scores were 5.4 ± 1.1 and 1.2 ± 1.4, respectively, corresponding to a population with a high level of comorbidities but low physical and cognitive dependence. Mortality was 61/100 (61%) at 3 months. In multivariate analysis only comorbidities assessed by the Charlson index [Adjusted Odds Ratio, 1.6; 95% CI, 1.2-2.2; p < 0.003] and the number of organ failures assessed by the SOFA score [Adjusted Odds Ratio, 2.5; 95% CI, 1.1-5.2; p < 0.02] were independently associated with 3-month mortality. All 22 patients needing renal support after Day 3 died. Compared with pre-admission, physical (p = 0.04), and cognitive (p = 0.62) dependence in survivors had changed very little at 3 months. In addition, the mean NHP score was 213.1 ± 132.8 at 3 months, suggesting an acceptable perception of their quality of life.

CONCLUSIONS

In a selected population of non surgical patients 75 years and older, admission into the ICU is associated with a 3-month survival rate of 38% with little impact on physical and cognitive dependence and subjective health status. Nevertheless, a high comorbidity level (ie, Charlson index), multi-organ failure, and the need for extra-renal support at the early phase of intensive care could be considered as predictors of death.

Home return 6 months after an intensive care unit admission for elderly patients

BACKGROUND

Home return after critical care is very important not only to patients and families. To move back home, patients have to fulfill two conditions: survive, and have a relatively good functional status. In addition, home return could be considered a low-cost outcome because of the reduced permanent healthcare costs.

METHODS

To determine the factors influencing the home-return probability of critically ill elderly patients 6 months after an intensive care unit (ICU) admission, we analyzed a cohort of patients aged 65 years or older admitted to an ICU. Demographic and social parameters, as well as admission diagnosis, underlying diseases, severity scores, ICU stay parameters, and complications were recorded. The final outcome was the place of stay (or death) 180 days after ICU admission.

RESULTS

Of 526 patients, 72% of the cohort and 93% of hospital survivors were able to return to their homes. Among the variables used in the multivariate logistic regression, advanced age, length of hospital stay before ICU admission, severity of acute illness, diagnosis category, and complications, as well as certain comorbidities, such as chronic heart failure or a neoplasia, were independently negatively associated with a home return.

CONCLUSION

Some interesting factors were identified in this single-center study. They could be considered for a multicenter study to build a universal prediction model for home return. Home return could be used for elderly patients as a surrogate for outcomes that are very important to the elderly but also to health politics.

Increased intensity of treatment and decreased mortality in elderly patients in an intensive care unit over a decade

OBJECTIVES

Data collected from two cohorts of patients aged > or =80 yrs and admitted to an intensive care unit in France were compared to determine whether intensive care unit care and survival had evolved from the 1990s to the 2000s.

DESIGN

Retrospective cohort study on patient data attained during intensive care unit stays.

SETTING

18-bed intensive care unit in an academic medical center.

PATIENTS

Two cohorts of patients aged > or =80 yrs, admitted to an intensive care unit at a 10-yr interval.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

The first cohort comprised 348 patients admitted between January 1992 and December 1995, and the second cohort, 373 patients admitted between January 2001 and December 2004. There was no difference in age between the two cohorts, but patients in the second had significantly less history of functional limitation and significantly more acute illness (Simplified Acute Physiology Score II 43 +/- 18 vs. 57 +/- 25, respectively, p < .0001). Patients in the second cohort had a significantly higher Omega Score, had a higher occurrence of renal replacement therapy, and received vasopressors more frequently than the patients in the first cohort, even when adjusted for age, sex, Knaus classification, Simplified Acute Physiology Score II, and intensive care unit admission cause. Intensive care unit mortality was 65% and 64% for the first and second cohorts, respectively. In multivariate analysis (including age, Knaus classification, Simplified Acute Physiology Score II and first vs. second period) for association with intensive care unit survival, the 2001-2004 period was associated with a near tripling of chances of survival (odds ratio 2.9; 95% confidence interval, 1.92-4.47, p < .0001).

CONCLUSIONS

The characteristics and intensity of treatment for elderly people admitted to the intensive care unit changed significantly over a decade. The intensity of treatments has increased over time and survival has improved over time as well. A potential link between increased treatment and improved survival in the elderly may be evoked.

Selection of intensive care unit admission criteria for patients aged 80 years and over and compliance of emergency and intensive care unit physicians with the selected criteria: An observational, multicenter, prospective study

OBJECTIVE

To describe intensive care unit referral decisions by emergency room physicians in patients aged > or =80 yrs.

DESIGN

Prospective, observational cohort study of patients aged > or =80 yrs who were triaged in the emergency room, using a list of intensive care unit admission criteria selected by emergency physicians among 76 preliminary criteria adapted from the 1999 Society of Critical Care Medicine guidelines. The Delphi method was used to select the criteria.

SETTING

Fifteen French hospitals.

PATIENTS

A total of 2646 patients aged > or =80 yrs with at least one criterion.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

In the Delphi process, level of agreement was assessed as follows: when all answers fell within a single interval (7-9 = definite admission criteria; 4-6 = equivocal admission criteria or 1-3 = inappropriate admission), agreement was strong; when answers spanned two intervals, agreement was fair; and when answers spanned all three intervals, agreement was poor. Of the 76 preliminary criteria, two were removed; 44 were selected as definite intensive care unit admission criteria; and 30 were selected as equivocal intensive care unit admission criteria. Of the 1426 patients meeting definite admission criteria, 441 (30.9%) were referred for intensive care unit admission and 231 of 441 (52.4%) were admitted to the intensive care unit. Of the 1041 patients with equivocal admission criteria, 181 (17.3%) were referred for intensive care unit admission; and, of these, 79 (43.6%) were admitted to the intensive care unit. Factors associated independently with no intensive care unit referral were age odds ratio [OR], 1.04; 95% confidence interval [CI], 1.04-1.07), active cancer (OR, 1.61; 95% CI, 1.09-1.38), unknown hospitalization status (OR, 1.53; 95% CI, 1.11-2.11), unknown living arrangements (OR, 1.69; 95% CI, 1.19-2.42), regular psychotropic medications (OR, 1.42; 95% CI, 1.10-1.81), low severity at referral (OR, 0.60; 95% CI, 0.53-0.68), low activity in daily living score (OR, 0.93; 95% CI, 0.88-0.99).

CONCLUSIONS

Emergency and intensive care unit physicians were extremely reluctant to consider intensive care unit admission of patients aged > or =80 yrs, despite the presence of criteria indicating that intensive care unit admission was certainly or possibly appropriate.

[Elderly patient in an intensive critical unit]

Admission of elderly patients to intensive care units (ICU) is an increasing phenomenon. The severity of the disease causing admission and the basal functional patient's status are conditions more important than age to predict mortality and long term functional outcome. Studies demonstrate that elderly ICU survivors recover after discharge the majority part of their functional capability and perception of quality of life. On the contrary, these patients develop higher number of geriatric syndromes, mainly confusional syndrome. The culture of geriatric comprehensive assessment should be implemented in ICU and especially after discharge. The use of simple and validates scales (Barthel's Index, Lawton's Index and EuroQol-5D...) must be incorporated into the clinical practice. This is a good tool that could be useful for the specialists involved in the usually difficult decision of whether an elderly patient should or not be admitted to an ICU.

Very old patients admitted to intensive care in Australia and New Zealand: a multi-centre cohort analysis

Introduction

Older age is associated with higher prevalence of chronic illness and functional impairment, contributing to an increased rate of hospitalization and admission to intensive care. The primary objective was to evaluate the rate, characteristics and outcomes of very old (age ≥ 80 years) patients admitted to intensive care units (ICUs).

Methods

Retrospective analysis of prospectively collected data from the Australian New Zealand Intensive Care Society Adult Patient Database. Data were obtained for 120,123 adult admissions for ≥ 24 hours across 57 ICUs from 1 January 2000 to 31 December 2005.

Results

A total of 15,640 very old patients (13.0%) were admitted during the study. These patients were more likely to be from a chronic care facility, had greater co-morbid illness, greater illness severity, and were less likely to receive mechanical ventilation. Crude ICU and hospital mortalities were higher (ICU: 12% vs. 8.2%, P < 0.001; hospital: 24.0% vs. 13%, P < 0.001). By multivariable analysis, age ≥ 80 years was associated with higher ICU and hospital death compared with younger age strata (ICU: odds ratio (OR) = 2.7, 95% confidence interval (CI) = 2.4 to 3.0; hospital: OR = 5.4, 95% CI = 4.9 to 5.9). Factors associated with lower survival included admission from a chronic care facility, co-morbid illness, nonsurgical admission, greater illness severity, mechanical ventilation, and longer stay in the ICU. Those aged ≥ 80 years were more likely to be discharged to rehabilitation/long-term care (12.3% vs. 4.9%, OR = 2.7, 95% CI = 2.6 to 2.9). The admission rates of very old patients increased by 5.6% per year. This potentially translates to a 72.4% increase in demand for ICU bed-days by 2015.

Conclusions

The proportion of patients aged ≥ 80 years admitted to intensive care in Australia and New Zealand is rapidly increasing. Although these patients have more co-morbid illness, are less likely to be discharged home, and have a greater mortality than younger patients, approximately 80% survive to hospital discharge. These data also imply a potential major increase in demand for ICU bed-days for very old patients within a decade.

[Age as predictive factor of mortality in an intensive and intermediate care unit]

INTRODUCTION

Age by itself is not a criterion of biological prognosis. Scores for physiological variables on admission and multiorgan failure are better predictors of mortality.

PATIENTS AND METHODS

We performed a retrospective/ prospective observational study from September, 2005 to May, 2007. The following variables were analyzed: age, sex, Acute Physiology and Chronic Health Classification System (APACHE) II, modified APACHE II score (without the variable of age), Sequential Organ Failure Assessment (SOFA) score, length of hospital stay, type of disease and mortality, limitation of therapeutic effort (LTE), Katz index on admission, intensive and intermediate care unit (IICU) mortality and in-hospital mortality. Student's t-test was used to analyze continuous variables.

RESULTS

Of the 572 patients admitted to the IICU, we excluded 75 due to transfer to other hospitals, 142 due to direct admission to intermediate care, and 89 due to acute coronary syndrome. Of the 266 remaining patients with medical disease, mortality was higher when the APACHE II score was > 20 (OR = 9.4) and/or the SOFA score was >4 (OR = 15.41) but not when age was 3 76 years (OR = 2.04). Multivariate analysis of these parameters revealed higher mortality in the IICU (P=.01) in patients with a SOFA score > 4 and modified APACHE II score >16, independently of age or the Katz index. In addition to the SOFA and the APACHE II scores, in-hospital mortality was significantly influenced by the Katz index (P=.05). LTE was significantly greater in patients with a Katz index E-G.

CONCLUSIONS

Higher SOFA and APACHE II scores predicted higher IICU mortality, regardless of age. LTE was more frequent in patients with a greater degree of dependence.

Considerations in caring for the critically ill older patient

People over age 65 are the fastest growing segment of the population and account for 42% to 52% of the intensive care unit admissions in the United States. There are many physiologic changes that occur with aging which can impact on both the presentation and management of older patients with critical illness. Older patients have an increased risk for the development of sepsis, and age itself impacts on outcomes related to sepsis. Delirium is also very prevalent among older intensive care unit patients and is associated with adverse outcomes. While outcome studies suggest that chronologic age itself is not a risk factor for poor outcomes after adjusting for severity of illness, older patients clearly have physiologic changes which need to be considered when providing critical care. This article will review important physiologic changes of aging, as well as sepsis and delirium and outcomes of older ICU patients.

Determinants of long-term mortality after prolonged mechanical ventilation

STUDY OBJECTIVES

The poor long-term survival of patients requiring prolonged mechanical ventilation may be due to potentially modifiable factors. We therefore sought to assess the early determinants of long-term survival after discharge from a specialized respiratory unit.

METHODS

Eighty of 113 patients (71%) admitted to a respiratory care unit from June 2001 to August 2003 survived to discharge. Mortality outcomes and dates of death were determined by review of the records and survey in April 2005 of a national Death Master File. Potential determinants of survival after discharge were collected during the admission to the unit.

RESULTS

Fifty-five percent of patients died within the first year after discharge. Age of 65 years or older, sacral ulcers, a serum creatinine >124 micromol/L, and failure to wean were each individually associated with shorter survival. Age, skin integrity, and wean status on discharge remained independent determinants of survival in a multivariable analysis. In a post-hoc analysis, chronic irreversible neurologic diseases were also independently associated with poor long-term survival.

CONCLUSIONS

Mortality after discharge from a respiratory care unit is high. Interventions that may favorably impact long-term survival in these patients could target the modifiable factors identified, including measures that facilitate weaning and prevent or treat renal dysfunction and skin breakdown.

Myths of the High Medical Cost of Old Age and Dying

This report challenges commonly held beliefs about the financial and medical impact of older Americans during their last months of life. Written by physicians specializing in geriatrics, the report offers a wealth of data to refute seven misconceptions that currently influence U.S. health care policies: (1) that the growing number of older people has been the primary factor driving the rise in U.S. health care costs; (2) that as the population ages, health care costs for older Americans will necessarily overwhelm and bankrupt the nation; (3) that putting limits on health care for the very old at the end of life would save Medicare significant amounts of money; (4) that aggressive hospital care for the aged is futile and the money spent is wasted; (5) that it is common for older people to receive heroic, high-tech treatments at the end of life; (6) that Medicare covers everything that older adults need in terms of their health care; (7) that if older patients had living wills or other kinds of advance directives, it would resolve dilemmas of how aggressively to provide care.

Cognitive, functional, and quality-of-life outcomes of patients aged 80 and older who survived at least 1 year after planned or unplanned surgery or medical intensive care treatment

OBJECTIVES

To investigate long-term cognitive, functional, and quality-of-life outcomes in very elderly survivors at least 1 year after planned or unplanned surgery or medical intensive care treatment.

DESIGN

Retrospective cohort study.

SETTING

General, 1,024-bed, tertiary university teaching hospital in The Netherlands.

PARTICIPANTS

Two hundred four survivors of a cohort of 578 patients admitted to the medical-surgical intensive care unit (ICU) between January 1997 and December 2002 and alive in December 2003. The majority of survivors underwent elective surgery.

MEASUREMENTS

From December 2003 until February 2004, data were collected from 190 patients and 169 relatives. The measures were: Informant Questionnaire on Cognitive Decline short form (IQCODE-SF) (cognition), modified Katz index of activities of daily living (ADLs) (functional status), and EuroQol (EQ-5D) (health-related quality of life). The patients themselves completed the modified Katz ADL index and EQ-5D forms; their caregivers completed the ADL caregiver version and IQCODE-SF.

RESULTS

The mean age at admission+/-standard deviation was 81.7+/-2.4, and the median time after discharge was 3.7 years (range 1-5.9 years). Of the ICU patients who had planned surgery, 57% survived, compared with 11% of the unplanned surgical admissions and 10% of the medical patients. Three-quarters (74.3%) of the patients who lived at home before ICU admission remained at home at follow-up. Eighty-three percent had no severe cognitive impairment, and 76% had no severe physical limitations (33% had moderate, 40% had mild, and 3% had no limitations). The perceived quality of life was similar to that of an age-matched general population.

CONCLUSION

Long-term survivors of ICU treatment received at the age of 80 and older showed fair-to-good cognitive and physical functioning and quality of life, although few patients who underwent unplanned surgery or who were admitted to the ICU for medical reasons survived.

Long-term functional outcome and performance status after intensive care unit re-admission: a prospective survey

BACKGROUND

Intensive care unit (ICU) re-admission identifies a high-risk group in terms of hospital mortality, length of stay, and resource utilization. Only hospital and ICU mortality are well described in the literature on critically ill patients needing re-admission.

METHODS

With ethical committee approval, from a prospectively collected database of all admissions to a combined medical and surgical ICU from January 1 to December 31, 2004, we identified all ICU re-admissions from within the hospital and analysed the factors associated with increased incidence of re-admission. At 2-3 yr after discharge, we evaluated the functional outcome of the surviving re-admitted patients as Glasgow Outcome Score (GOS) and Karnofsky index and identified determinants of both mortality and good functional outcome.

RESULTS

Seventy-three (7.4%) of the 1061 patients who survived their first ICU stay were re-admitted during the study period. Of the 73 re-admitted patients, 14 died in ICU, 17 died later in the same hospital stay, and 10 died in the interim. Thus, 32 (43.8%) were alive 2-3 yr after discharge. The median [IQR] GOS of the survivors was 4 (see Mackle and colleagues in One year outcome of intensive care patients with decompensated alcoholic liver disease.

CONCLUSIONS

Although the ICU, hospital, and subsequent mortalities are high in patients after ICU re-admission, most survivors at 2-3 yr had by then made a good functional recovery and were independent.

Devenir et qualité de vie d'une population âgée de plus de 80 ans trois mois après un séjour en réanimation

OBJECTIVES

The aging of the population has seen an increase in the number of elderly patients admitted to reanimation units. We sought to know the outcomes and evolution of the quality of life of a population of elderly patients after their experience with this type of service.

METHOD

We included all patients older than 80 years who had been in two intensive care units in the Loire region of France between October 2005 and May 2006. We studied their state of mind 3 months after they exited the service. Then, for the survivors, we used the Activities of Daily Living (ADL) scale and the generic questionnaire of health, the SF-36, to evaluate the evolution of their degree of autonomy and quality of life related to health compared to that one month prior to entry in the reanimation unit.

RESULTS

We included 70 patients (mean age 85.2+/-4.5 years). At 3 months after exiting reanimation, the survival rate was 57%, and 28 survivors underwent rating scale testing. The physical score of the SF-36 and the ADL score were significantly decreased as compared with that one-month before admission, with no significant difference in mental score of the SF-36. Physical deterioration did not have a significant effect on the evolution of perceived health (dimension GH of the SF-36), life and relations with others (dimension SF) or mental health (dimension MH). The decreased ADL score was correlated with that of the two physical dimensions of the SF-36, with no correlation with the four psychic dimensions. A total of 92% of patients were satisfied with their care in reanimation and three of four would agree to go back if their state required it. For the others, it is a question of respecting the will of the elderly patients confronted with reanimation care.

CONCLUSION

Three months after intensive care with reanimation, elderly patients do not have significantly modified perceived health and psychic state as compared with objective deteriorated physical capacity. The absence of consensus on the threshold of old age and the quality-of-life instrument to use prevents a comparison of our results with those in the literature. However, others have shown and we agree that elderly people could benefit from reanimation therapy.

Long-term outcome of elderly patients requiring intensive care admission for abdominal pathologies: survival and quality of life

BACKGROUND

Medical developments have allowed the management of patients aged over 70 years with severe abdominal pathologies requiring intensive care unit (ICU) admission. These patients require enhanced life support and present a high ICU mortality. We investigated the outcome and quality of life (QOL) of elderly patients 2 years after their ICU stay for abdominal pathologies.

METHODS

Patients aged 70 years or over with abdominal pathologies, admitted to our ICU over a period of 2 years, were included. Two years following their ICU stay, a letter informed the patients about the present study. Consent to participate was obtained by telephone. QOL was assessed by the Euro-QOL and Short Form-36 questionnaires. Other patient-centered outcomes were evaluated.

RESULTS

Overall, 2780 patients were admitted to the ICU during the study period; 141 (5%) patients were eligible; 112 of the 141 (79%) survived their ICU stay, 95 (67%) survived their hospital stay and 52 (37%) were alive 2 years after their ICU stay; 36 of the 52 survivors (69%) answered the questionnaire. Their QOL 2 years after their ICU stay was decreased in comparison with an age-matched population. Eighty-one per cent of patients lived at home and 57% were totally independent. They perceived their ICU stay as positive and 75% stated that they would agree to go through intensive care again. Factors associated with 2-year survival were the absence of co-morbidity, absence of malignancy and a lower Simplified Acute Physiology II score on ICU admission.

CONCLUSIONS

A high mortality rate and a decrease in QOL were observed in elderly patients with severe abdominal pathologies. Nonetheless, these patients were able to adapt well to their physical disabilities.

Should elderly patients be admitted to the intensive care unit?

As the general population ages, an increasing number of patients over 80 years are being admitted to the intensive care unit (ICU). Selection of older patients for ICU admission results in lower rates of co-morbidities and underlying fatal diseases. After adjustment for disease severity, ICU and post-ICU mortality rates are higher in elderly patients than in younger populations. Age itself explains only a small part of the increased hospital mortality, suggesting that specific information such as functional, cognitive, and nutritional status, as well as co-morbidities, should be collected to predict mortality in elderly ICU patients. The long-term prognosis depends chiefly on functional status, whereas initial disease severity no longer influences mortality. According to our review, it is impossible to define evidence-based recommendations for ICU admission of the elderly. This justifies further studies that encompass several aspects, such as the initial triage process and the long-term prognosis (mortality, autonomy and quality of life).

Early activity is feasible and safe in respiratory failure patients*

OBJECTIVE

To determine whether early activity is feasible and safe in respiratory failure patients.

DESIGN

Prospective cohort study.

SETTING

From June 1, 2003, through December 31, 2003, we assessed safety and feasibility of early activity in all consecutive respiratory failure patients who required mechanical ventilation for >4 days admitted to our respiratory intensive care unit (RICU). A majority of patients were treated in another intensive care unit (ICU) before RICU admission. We excluded patients who required mechanical ventilation for < or =4 days.

PATIENTS

Eight-bed RICU at LDS Hospital.

INTERVENTIONS

We assessed patients for early activity as part of routine respiratory ICU care. We prospectively recorded activity events and adverse events. We defined three activity events as sit on bed, sit in chair, and ambulate. We defined six activity-related adverse events as fall to knees, tube removal, systolic blood pressure >200 mm Hg, systolic blood pressure <90 mm Hg, oxygen desaturation <80%, and extubation.

MEASUREMENTS AND MAIN RESULTS

During the study period, we conducted a total of 1,449 activity events in 103 patients. The activity events included 233 (16%) sit on bed, 454 (31%) sit in chair, and 762 (53%) ambulate. In patients with an endotracheal tube in place, there were a total of 593 activity events, of which 249 (42%) were ambulation. There were <1% activity-related adverse events, including fall to the knees without injury, feeding tube removal, systolic blood pressure >200 mm Hg, systolic blood pressure <90 mm Hg, and desaturation <80%. No patient was extubated during activity.

CONCLUSIONS

We conclude that early activity is feasible and safe in respiratory failure patients. A majority of survivors (69%) were able to ambulate >100 feet at RICU discharge. Early activity is a candidate therapy to prevent or treat the neuromuscular complications of critical illness.

Short-term and long-term mortality in very elderly patients admitted to an intensive care unit

OBJECTIVE

To report short-term and long-term mortality of very elderly ICU patients and to determine independent risk factors for short-term and long-term mortality

DESIGN AND SETTING

Retrospective cohort study in the medical/surgical ICU of a tertiary university teaching hospital.

PATIENTS

578 consecutive ICU patients aged 80 years or older.

RESULTS

Demographic, physiological, and laboratory values derived from the first 24h after ICU admission. ICU mortality of unplanned surgical (34.0%) and medical patients (37.7%) was higher than that of planned surgical patients (10.6%), as was post-ICU hospital mortality (26.5% and 29.7% vs. 4.4%). Mortality 12 months after hospital discharge, including ICU and hospital mortality, was 62.1% in unplanned surgical and 69.2% in medical patients vs. 21.6% in planned patients. Only median survival of planned surgical patients did not differ from survival in the age- and gender-matched general population. Independent risk factors for ICU mortality were lower Glasgow Coma Scale score, higher SAPS II score, the lowest urine output over 8 h, abnormal body temperature, low plasma bicarbonate levels, and higher oxygen fraction of inspired air. High urea concentrations and admission type were risk factors for hospital mortality, and high creatinine concentration was an independent risk factor for 12-month mortality.

CONCLUSION

Mortality in very elderly patients after unplanned surgical or medical ICU admission is higher than after planned admission. The most important factors independently associated with ICU mortality were related to the severity of illness at admission. Long-term mortality was associated with renal function.

Outcomes of Elderly Survivors of Intensive Care

An increasing proportion of critically ill patients are elderly (ie, >or= 65 years of age). This poses complex challenges and choices for the management of elderly patients. Outcome following admission to the ICU has been traditionally concerned with mortality. Beyond mortality, outcomes such as functional status and health-related quality of life (HRQOL) have assumed greater importance. This article reviews the literature, published in English from 1990 to December 2003, pertaining to HRQOL and functional status outcomes of elderly patients. Functional status and HRQOL of elderly survivors of ICUs has been underinvestigated. There is no agreement as to the optimal instrument choice, and differences between studies preclude meaningful comparison or pooling of results.

Outcomes, cost and long term survival of patients referred to a regional weaning centre

BACKGROUND

Regional weaning centres provide cost effective care for patients who have undergone prolonged mechanical ventilation. There are few published European data on outcomes in these patients.

METHODS

Patients admitted for weaning to the Lane Fox Respiratory Unit (LFU) between January 1997 and December 2000 were identified. The proportion weaned from mechanical ventilation, in-hospital mortality, and subsequent survival after discharge were examined.

RESULTS

A total of 153 patients had been ventilated for a median of 26 days before transfer. The daily cost per patient stay was 1350. Fifty eight patients (38%) were fully weaned, 42 (27%) died, and 53 (35%) required ventilatory support at discharge from hospital of whom 36 (24%) required only nocturnal ventilation. Univariate analysis showed increasing age (OR 1.06, p<0.001), length of ICU stay (OR 1.02, p = 0.001), APACHE II predicted risk of death score (OR 1.02, p = 0.05), and a surgical cause for admission (OR 4.04) were associated with mortality. Neuromuscular/chest wall conditions were associated with low mortality (OR 0.36) but low likelihood of weaning from ventilation (OR 0.28). Female sex (OR 2.13, p = 0.03) and COPD (OR 2.81) were associated with successful weaning. Overall survival at 3 years from admission was 47%. Long term survival was lowest in patients with COPD.

CONCLUSIONS

Most patients survived to leave hospital, the majority having been liberated from ventilatory support. Survivors were younger and spent less time ventilated in the referring ICU. The underlying diagnosis determined success of weaning, hospital survival, and long term outcome.

Prognosis of patients aged 80 years and over admitted in medical intensive care unit

OBJECTIVE

To determine the prognostic indicators of long-term survival after admission to a medical intensive care unit (MICU) for patients aged 80 years and over. DESIGN. Prospective cohort study.

SETTING

A 14-bed MICU in a 970-bed, acute care, tertiary, university hospital in Paris, France.

PATIENTS

A total of 233 patients aged 80 years and over discharged from a MICU during a 2-year period.

MEASUREMENTS AND MAIN RESULTS

Severity at admission was estimated using the Simplified Acute Physiology Score. The underlying condition was classified using the MacCabe classification. The functional status was assessed using the Knaus classification. The outcome after MICU discharge was determined after a median 2-year follow-up. The functional outcome was assessed by telephone interviews, employing the Instrumental Activities of Daily Living (IADL). The in-MICU mortality was 19.5% including death occurring during the 2 days following discharge. The long-term survival rates for patients admitted to the MICU were 59% at 2 months, 33% at 2 years, and 29% at 3 years. The multivariate analysis identified two prognostic factors of death after discharge: presence of an underlying fatal disease (HR 1.7; 95% CI 1.1-2.6) and severe functional limitation (HR 1.7; 95% CI 1.2-2.6). The IADL was excellent or good for 56% of the surviving patients.

CONCLUSION

Long-term survival after MICU is mainly related to the underlying condition, whereas known factors for in-MICU survival do not influence long-term prognosis.

Critically ill old and the oldest-old patients in intensive care: short- and long-term outcomes

OBJECTIVE

The purpose of this study was to examine characteristics and outcome of the old, very old and oldest-old ICU patients DESIGN. This is a cohort study.

SETTING

The study was set in a ten-bed medical ICU in a university hospital. PARTICIPANTS. There were 410 patients classified in three subgroups: old, 75-79 years ( n=184; 44.4%), very old, 80-84 ( n=137, 33.4%) and the oldest-old, >or=85 ( n=91; 22.2%).

MEASUREMENTS

Underlying medical conditions, organ dysfunction, severity of illness, length of stay, use of mechanical ventilation, therapeutic activity and nosocomial infections were recorded. Multivariate analysis was conducted to identify risk factors for ICU and long-term mortality.

RESULTS

Characteristics at ICU admission did not differ among the three groups. ICU length of stay, therapeutic activity, mechanical ventilation and nosocomial infection(s) decreased with age. ICU survival rates for those below 75, 75-79, 80-84 and over 85 years were 80, 68, 75 and 69%, respectively; survival rates at 3 months were 54, 56 and 51%, respectively. APACHE II score [odds ratio (OR): 1.11] was identified as the only factor associated with ICU mortality, and age (OR: 2.17, for patients >or=85 years old and 1.82, for patients 80-84 years old) and limitation of activity before admission (OR: 1.74) as factors associated with long-term mortality.

CONCLUSION

In a population of patients >or=75 years old, very old age is not directly associated with ICU mortality. After ICU discharge, deaths occurred predominantly during the first 3 months: age and prior limitation of activity were associated with the risk of dying.

Morbidity, mortality, and quality-of-life outcomes of patients requiring >or=14 days of mechanical ventilation

OBJECTIVE

To determine the outcome and health-related quality of life of patients requiring >or=14 days of mechanical ventilation in the intensive care unit (ICU).

DESIGN

Prospective cohort study with post-ICU, cross-sectional, health-related quality-of-life survey.

SETTING

A 17-bed ICU in a university hospital.

PATIENTS

A consecutive cohort of 347 patients receiving mechanical ventilation for >or=14 days.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Of the patients enrolled in the study, 150 (44%) died in the ICU and 197 were discharged (58 of 197 died 1-57 months after discharge). Factors associated with ICU death according to multivariate logistic regression analysis were age >or=65 yrs, preadmission New York Heart Association functional class of >or=3, a preadmission immunocompromised status, septic shock at ICU admission, renal replacement therapy in the ICU, and nosocomial septicemia. Cox proportional hazards multivariate analysis identified age of >or=65, a preadmission immunocompromised status, and duration of mechanical ventilation for >35 days as independent predictors of death after ICU discharge. By contrast, postcardiac surgery patients had a better outcome. Health-related quality of life was evaluated for 87 of the 99 long-term survivors after a median follow-up of 3 yrs by using the Nottingham Health Profile and St. George's Respiratory questionnaires. Compared with those of a general French population, their scores were significantly worse for each of the Nottingham Health Profile domains, except social isolation. Nottingham Health Profile scores did not significantly differ between postcardiac and nonpostcardiac surgery patients, men and women (except that women felt more socially isolated), and patients with and without acute respiratory distress syndrome (except for more sleep disorders in those with acute respiratory distress syndrome). Finally, pulmonary-specific St. George's Respiratory Questionnaire global score was worse for acute respiratory distress syndrome survivors.

CONCLUSIONS

Prolonged mechanical ventilation is associated with impaired health-related quality of life compared with that of a matched general population. Despite these handicaps, 99% of the patients evaluated were independent and living at home 3 yrs after ICU discharge. Future studies should focus on physical or psychosocial rehabilitation that could lead to improved management of patients after their ICU stay.

Geriatric critical care

Demographic compulsions are inescapable. There has been a 50% increase in life expectancy at birth for persons born in 1980 compared to those born in 1900. Not only do critical care units utilize up to a third of hospital expenditures and about 1% of GNP, the critically ill elderly consume a disproportionate amount of ICU resources. Outcome prediction models for very elderly critically ill patients have been proposed with age as one of numerous model variables; but such models have not been widely validated. Despite the burgeoning emphasis on evidence-based population approach to health care, there is insufficient research to guide the critical care clinician. There remains a modicum of subjectivity in crucial decisions that affect the elderly patient receiving intensive care. Older age is also one of the factors that lead to a physician bias in refusing ICU admission; this has recently been borne out in a multivariate analysis. Physicians generally consider their older patients' quality of life to be worse than do the patients, although other studies that have assessed the quality of live show no age-related differences among ICU survivors. Furthermore, physicians' estimations of patient quality of life significantly influence physicians' attitudes to futility of care issues, in contrast to patients' perceptions. Threshold for life-sustaining treatment in the elderly will continue to be different among the ICUs. In critical care of the elderly, geography may well be destiny. Clinical decisions will be subjected to many ethical, legal, and socioeconomic pressures. Personal and religious beliefs will inevitably influence societal expectations and clinician practices. Severity of illness has the biggest influence on outcome in a critical illness. Age alone is not a predictor of short-term or long-term outcome in the older patient who is critically ill. Critical illness in the elderly remains a fertile area for future research.

Quality of life and functional level in elderly patients surviving surgical intensive care

BACKGROUND

The elderly consume up to one third of health care resources and have become a target for cost reduction efforts. This study was performed to evaluate elderly survivors of surgical critical illness using perceived quality of life and activities of daily living as indicators of value of care.

STUDY DESIGN

Six hundred seventy-two patients age 70 years and older admitted to a surgical intensive care unit between October 1, 1992 and March 31, 1995 were studied. Intensive care unit and hospital length of stay, admission type and service, and severity of illness were integrated with preadmission and current activities of daily living in survivors. Perceived quality of life was assessed where obtainable from patient or direct proxy.

RESULTS

Activities of daily living were obtained on 342 (50.9%) and perceived quality of life evaluations on 240 (35.7%) of the initial study population. Median duration from admission to evaluation was 21 months. Activities of daily living scores decreased significantly overall from 4.75+/-0.72 (mean; +/- standard deviation) to 4.22+/-1.41, the proportion of completely independent patients fell from 84.9% to 72.0%, and the number of completely dependent patients rose from 0% to 3.8%. Perceived quality of life scores were not significantly different than scores in healthy patients living in the community. Using regression models, age, service, APACHE II score, and emergent operation or admission did not demonstrate relationships to changes in activities of daily living scores.

CONCLUSIONS

Although overall functional levels fell, rates of full dependency rose only slightly and perceived quality of life was high in a group of elderly patients surviving surgical intensive care. High hospital and postdischarge mortality should not motivate restriction of care for elderly patients requiring surgical intensive care given their high postillness subjective quality of life measures.

Outcome of older patients requiring ventilatory support in intensive care: impact of nutritional status

OBJECTIVES

To determine predictors of mortality in the intensive care unit (ICU) and at 6 months after discharge; to assess the lifestyles of survivors 6 months after discharge.

DESIGN

Prospective cohort study of patients screened upon admission and 6 months after discharge from the ICU.

SETTING

The ICU of a university hospital.

PARTICIPANTS

One hundred sixteen consecutive patients age 70 and older admitted to the ICU and treated by mechanical ventilation for at least 24 hours.

MEASUREMENTS

A comprehensive medical, functional, nutritional, and social assessment was undertaken for each patient upon admission to the ICU. Functional status and residence were recorded for patients still living 6 months after discharge from the ICU.

RESULTS

Mortality in the ICU and 6 months after discharge was 31% and 52%, respectively. The predictors of in-ICU mortality on multivariate analysis were a high omega score per day in the ICU and a high simplified acute physiologic score corrected for points related to age (SAPS IIc). The predictors of mortality at 6 months were a high omega score per day in the ICU, a high SAPS IIc, and a mid-arm circumference (MAC) under the 10th percentile for the older French population in good health. Six months after discharge from the ICU, 91% of the surviving patients had the same residential status and 89% had a similar or improved functional status compared with pre-admission status.

CONCLUSIONS

Although severity of illness remains an important predictor of in-ICU mortality and mortality at 6 months after release from ICU, we found that impaired nutritional status upon admission was related to 6-month mortality. These results emphasize the need for a systematic nutritional assessment in older patients admitted to the ICU and treated by mechanical ventilation.

[Mortality and quality of life of patients beyond 65 years one year after ICU discharge]

BACKGROUND

Intensive care in elderly patients is a subject of controversy, because they generally present a high rate of mortality and short expectation of life. Due to the increasing life expectancy, more elderly patients will be treated in Intensive Care Unit (ICU) with an increasing consume of resources. The present study considers the mortality and quality of life (QOL) of patients beyond 65 years after ICU, and theirs predictors.

PATIENTS AND METHOD

Retrospective study of patients >= 65 years admitted in multidisciplinaire ICU. Mortality and QOL (with modified EuroQOL Instrument) one year after discharge were studied. To determine mortality and QOL one year independent predicting factors, multiple logistic regression models were used.

RESULTS

Of 313 patients studied, 95 (30%) died in ICU, 32 (10%) in hospital and 34 (11%) died after discharge. The independent predicting factors of mortality one year after ICU discharge were: organ failure (p < 0.000; odds ratio [OR], 2.9), cardiac surgery (p < 0.0000; OR, 0.15) and respiratory disease (p < 0.01; OR, 2.8). Of the 152 surviving patients, 21% got worse their previous QOL and only 17% were severely discapitated. The independent predicting factors of QOL one year after ICU discharge were: prior QOL (p < 0.0002; OR, 10.2) and age (p < 0.002; OR, 0.09).

CONCLUSION

Despite the high one year after ICU discharge mortality rate (51%), 83% of the survivors were able to live independently. Due to dependence between mortality and multiorganic failure during ICU stay and not age, this latter cannot be the determining factor of the care level.

Psychosocial recovery following ICU: experiences and influences upon discharge to the community

While appropriate referrals to community services upon discharge home may address the physical needs of former intensive care patients, the psychological needs may be overlooked. This pilot study describes the recovery period following discharge to home of former intensive care unit (ICU) patients and their significant others, and identifies factors influencing recovery and the role of community support in the recovery period.Semi-structured interviews were conducted with five patients and four significant others, 6 to 15 weeks following discharge from the ICU. Data were analysed using constant comparison to identify recurring categories and themes. The recovery period was characterized by the patients' focus on physical recovery with the major theme described as 'moving on', incorporating normalizing life, return to usual routines, and leaving behind the ICU experience. Factors influencing the recovery period included individual attitudes, prior experiences, the ICU experience and support of family and friends. Community support was not commonly utilized with participants describing a perceived stigma attached to asking for professional help. Attention to physical needs and care often masked the psychological support received, particularly from family members. Despite awareness of community supports, patients were generally reluctant to avail themselves of any of these services.

Outcome, functional autonomy, and quality of life of elderly patients with a long-term intensive care unit stay

OBJECTIVE

To examine the outcome, functional autonomy, and quality of life of elderly patients (> or = 70 yrs old) hospitalized for >30 days in an intensive care unit (ICU).

DESIGN

Prospective cohort study.

SETTING

A ten-bed, medical-surgical ICU in a 460-bed, acute care, tertiary, university hospital.

PATIENTS

A consecutive cohort of 75 patients, >70 yrs old, admitted to the ICU from January 1, 1993, to August 1, 1998, for >30 days.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Severity at admission and of the underlying disease was estimated according to the Simplified Acute Physiologic Score (SAPS II), the Organ Dysfunction and/or Infection (ODIN) score, the McCabe score, and the Knaus classification. Therapeutic intensity was measured through the French Omega scoring system. All patients were mechanically ventilated during their ICU stay. Outcome measurements were made by two cross-sectional studies using telephone interviews on the first week of September 1996 and 1998 with a questionnaire including measures of functional capacity by Katz's Activities of Daily Living, modified Patrick's Perceived Quality of Life score, and the Nottingham Health Profile. The survival rate was 67% in the ICU and 47% in the hospital. A total of 30 patients were alive and able to participate in at least one of the cross-sectional studies. Independence in activities of daily living was decreased significantly after the ICU stay, except for feeding. However, most of the 30 patients remained independent (class A of the Activities of Daily Living index) with the possibility of going home. Perceived Quality of Life scores remained good, even if the patients estimated a decrease in their quality of life for health and memory. Return to society appeared promising regarding patient self respect and happiness with life. The estimated cost by survivor was of 55,272 EUR ($60,246 US).

CONCLUSIONS

This study suggests that persistent high levels of ICU therapeutic intensity were associated with a reasonable hospital survival in elderly patients experiencing prolonged mechanical ventilatory support. These patients presented a moderate disability that influenced somewhat their perceived quality of life. These results are sufficient to justify prolonged ICU stays for elderly patients.

Predicting functional status outcomes in hospitalized patients aged 80 years and older

OBJECTIVE

To develop a model estimating the probability of a patient aged 80 years or older having functional limitations 2 months and 12 months after being hospitalized.

DESIGN

A prospective cohort study.

SETTING

Four teaching hospitals in the US.

PARTICIPANTS

Enrolled patients were nonelective hospital admissions aged 80 years or older who stayed in hospital at least 48 hours. The 804 patients who survived and completed an interview at 2 months and the 450 who completed an interview at 12 months were from the 1266 patients in the Hospitalized Elderly Longitudinal Project (HELP) (76% and 47% of survivors, respectively). Median age of the 2-month survivors was 84.7 years.

MEASUREMENTS AND MAIN OUTCOMES

Patient function 2 and 12 months after enrollment was defined by the number of dependencies in Activities of Daily Living (ADLs). Ordinal logistic regression models were constructed to predict functional status. Predictors included demographic characteristics, disease category, geriatric conditions, severity of physiologic imbalance, current quality of life, and exercise capacity and ADLs 2 weeks before study admission.

RESULTS

Before admission, 39% of patients were functionally independent in ADLs. Of patients who survived and were interviewed at 2 months, 32% were functionally independent, and at 12 months, 36% were independent. Among patients with no baseline dependencies, 42% had developed one or more limitations 2 months later, and 41 % had limitations 12 months later. The patient's ability to perform activities of daily living at baseline was the most important predictor of functional status at both 2 and 12 months. In a multivariable predictive model, independent predictors of poorer functional status at 2 months included: worse baseline functional status and quality of life; depth of coma, if any; lower serum albumin level; presence of dementia, depression, or incontinence; being bedridden; medical record documentation of need for nursing home; and older age. Model performance, assessed using Somers' D, was 0.61 for 2 months and 0.57 for 12 months (Receiver Operating Characteristic (ROC) area = 0.81 and .79, respectively.) Bootstrap validation of the month 2 model also yielded a Somers' D = 0.60. The models were well calibrated over the entire risk range. The ROC area for prediction of the loss of independence was 0.76 for 2 months and 0.68 for 12 months.

CONCLUSIONS

Many older patients are functionally impaired at the time of hospitalization, and many develop new functional limitations. A limited amount of readily available clinical information can yield satisfactory predictions of functional status 2 months after hospitalization. Models like this may prove to be useful in clinical care. This work illuminates a potential method for risk adjustment in research studies and for monitoring quality of care.

Long-term functional outcome after intensive care

OBJECTIVE

Although age-related mortality after intensive care unit (ICU) admission has been studied, functional recovery for different age groups following ICU admission is not well characterized. We hypothesized that compared with younger age groups, fewer patients older than age 65 admitted to an ICU would regain their full prehospitalization functional ability and that their recovery would be slower than that of younger patients.

DESIGN

A prospective observational cohort study with convenience sampling.

SETTING

Intensive care units of an urban university-affiliated Veterans Administration Medical Center.

PARTICIPANTS

A total of 222 patients during the first 72 hours after entry to a medical or surgical ICU at the Denver Veteran's Administration Medical Center between September 1991 and July 1992.

MEASUREMENTS

We collected baseline data on patient demographics and on the severity of acute illness using the Acute Physiology and Chronic Health Evaluation (APACHE II), Acute Physiology Score (APS), and functional status (highest level of physical activity level 1 month before admission). We recorded survival and patient-perceived global functional status at 6 weeks and 6 months after admission. Post-ICU function was adjusted for baseline function, age, APACHE II, and APS using multiple regression.

RESULTS

Average patient age was 62+/-.74 years (mean +/- SEM). Fifty-two percent of the entire cohort returned to baseline function at 6 months. Although baseline function was better for younger people, there was no difference in recovery at 6 weeks in older compared with younger patients. Most functional recovery occurred by 6 weeks, with maintenance of this recovery at 6 months. Baseline function was the major determinant of both 6 week recovery (P < .001) and 6 month recovery (P = .002), whereas APACHE II was not (P = .3). Age predicted recovery significantly (P = .04) at 6 months but not at 6 weeks (P = .26). APACHE II (P < .001) and baseline function (P = .03) predicted mortality.

CONCLUSIONS

Older people had worse functional ability at ICU admission, but the proportion of older people who recovered and their rate of recovery was the same as for younger people. Baseline functional status, rather than abnormal physiologic status (as measured by APACHE II) on admission, was the major determinant of recovery, whereas APACHE II was the main correlate of mortality. Together, baseline function and physiologic status provide valuable complementary information for clinically relevant outcomes following an ICU admission.

The ethical challenge and the futile treatment in the older population admitted to the intensive care unit

Projections for the future suggest that the United States population will grow by 10-15% by the year 2000, but the number of people over the age of 80 will increase by 66%. As a result, the increase that has already been observed in the number of elderly patients requiring major medical attention can only be expected to grow. This study reviews the admissions to the intensive care unit (ICU) over the last 5 years by age to analyze whether the ICU admissions are higher for the patients older than 60 years of age. We considered all the admissions to the surgical (SICU) and medical (MICU) intensive care units at Morristown Memorial Hospital from January 1, 1992, to December 31, 1996. Patients were divided into age brackets (0-9 years, 10-19 years, 20-29 years,... > 90 years) and by gender. Medical and surgical admissions were analyzed including the average length of stay in the ICU. Daily charge for bed occupancy was reviewed based on the hospital data reported in 1995. The death rate was also considered. Fisher-corrected chi 2 and a Student t test were used for statistical analysis. A total of 6243 patients (2926 female and 3317 male) were admitted to the ICU over the 5-year period. The ICU admissions rate was higher in patients above 60 years of age compared with those below 60 (60% versus 30%, respectively). The age group with the highest admissions rate was between 70 and 79 years, followed by the 60-69-year group. These two groups had significantly more admission than all other groups (P < 0.001). Medical patients' length of stay was shorter than the surgical group, and they had a lower rate of admission to the ICU. The death rate was higher in the group older than 60 years. They also spent a longer time in ICU compared with the younger group (22 +/- 7 days versus 12 +/- 8 days). The charge per day per bed was $2100 in the ICU, $1600 in a telemetry floor, and $950 in a regular floor. The charge per bed in the group above 60 years old was double compared with the one for the younger group. Older patients were admitted to the ICU with a significantly higher frequency than was the younger group. There were more surgical than medical patients admitted to the ICU. The mortality rate and the daily cost, based on daily bed charge, was significantly higher in the older group. Based on our experience, older people had a more difficult recovery in ICU than did the younger people. In our opinion we should treat acute critical illness but not terminal pathology. A problem exists in educating physicians about which patients will derive no benefit from the ICU. This will determine if we can decrease or avoid the use of the ICU and its accompanying expense, in situations where it does not significantly increase survival and the quality of life.

Assessment of long-term psychological well-being following intensive care

The aim of this research, which remains in progress, has been the examination of long-term psychological consequences for survivors of intensive care. Seventy-two patients were followed up for 1 year, after discharge from the Intensive Care Unit (ICU) at St James's University Hospital in Leeds. Major objectives of the study included assessment of patients' sense of well-being at specified intervals post-discharge, and identification of ICU-related variables which might influence psychological recovery. Psychometric assessments used were the General Health Questionnaire 28-item version, the Rosenberg Self-esteem Scale, and the Impact of Event scale. This paper describes findings from the research so far. An exploratory analysis of the data suggests that distinctions can be drawn among surviving patients with regard to psychological recovery, by way of variables such as type of illness, mode of admission and amount of recall. The work expands previous research into post-ICU psychology and quality of life, and should allow increased understanding of this patient group.

Predictors of short- and long-term survival in HIV-infected patients admitted to the ICU

STUDY OBJECTIVES

To evaluate the prognosis of HIV-infected patients admitted to ICUs and to identify factors predictive of short- and long-term survival.

DESIGN

A prospective study from January 1, 1990, to December 31, 1992, including all consecutive HIV-infected patients admitted to our ICU for the first time. ICU survivors were followed up until January 1, 1994.

SETTING

An 18-bed infectious diseases ICU in a 1,300-bed university hospital in Paris.

PATIENTS

Four hundred twenty-one HIV-related admissions were recorded during the study period (33.5% of 1,258 admissions to ICU); 354 HIV-infected patients were first ICU admissions and were analyzed.

MEASUREMENTS AND RESULTS

Predictive factors on univariate and multivariate analyses (logistic regression and Cox model) for short- and long-term mortality were performed. Respiratory failure was the main cause of admission (49.2%), followed by neurologic disorders (26.8%), sepsis (10.2%), heart failure (4.5%), and miscellaneous disorders (9.3%). For these groups, in-ICU and in-hospital mortality rates were as follows: 16.7% and 33.9%; 23.2% and 41.1%; 38.9% and 58.3%; 25% and 68.8%; and 12.1% and 24.2%, respectively. In-ICU and in-hospital mortality rates were significantly different across the groups (p=0.026 and 0.002, respectively). Multivariate analysis showed that the in-hospital outcome was significantly associated with functional status (p=0.05), time since AIDS diagnosis (p=0.04), HIV disease stage (0.016), simplified acute physiology score (SAPS I) (p=0.06), need for mechanical ventilation (p<0.000001), and its duration (p=0.0001). In the 281 patients who were discharged alive from the ICU, cumulative survival rates were 51%+/-38% at 6 months, 28%+/-38% at 12 months, and 18%+/-30% at 24 months. Median and crude mean+/-SD survival times were 199 days and 316+/-343 days. Multivariate analysis showed that the long-term outcome was significantly associated with functional status (p=0.000001), weight loss (p=0.00001), the CD4 count (p=0.00001), the HIV disease stage (p=0.01), the duration of AIDS (p=0.001), the admission cause group (p=0.03), and the SAPS I at admission (p=0.00001).

CONCLUSIONS

The short-term (in-ICU and in-hospital) outcome of HIV-infected patients was mainly related to the severity of the acute illness (SAPS I, cause of admission, need for and duration of mechanical ventilation), and to the preadmission health status, based on functional status and weight loss. Some of these parameters, in particular the SAPS I and preadmission health status, also influenced the long-term outcome. Whereas HIV-related variables had little impact on the in-ICU outcome, they were closely related with the in-hospital outcome and even more strikingly with the long-term outcome. Thus, the life expectancy of HIV-infected patients, which depends primarily on the natural history of the HIV infection, is the most powerful determinant of the long-term prognosis. Our results confirm that ICU support for HIV-infected patients should not be considered futile.

Survival and quality of life after intensive care

OBJECTIVE

To determine survival and changes in quality of life (QOL) after hospital discharge in patients who had stayed in an intensive care unit (ICU).

DESIGN

Prospective study by direct interviews during ICU stay and 6 months after hospital discharge.

SETTING

Surgical-medical ICU.

PATIENTS AND METHODS

We interviewed cooperative, adult patients admitted consecutively to the ICU for more than 24 h, living near the hospital, who gave informed consent. The following QOL domains were investigated: residence, physical activity, social life, perceived QOL, oral communication and functional limitation.

RESULTS

One-year survival was 82.4% (predicted 84%). Mortality was 36.3% after urgent neoplastic surgery, 19.4% for medical admissions and 4.9% after non-neoplastic surgery. Of 160 patients studied, eight cases, older and already deteriorated at the first interview, could not respond to the perceived QOL item after ICU discharge. In the other 152 patients, physical activity was reduced in 31% (usually slightly), social life had worsened in 32% and functional limitation increased in 30%. The perceived QOL did not change.

CONCLUSIONS

After hospital discharge, the survival of ICU-admitted patients is comparable to that of the general population and not related to ICU treatments. Most patients maintain their physical activity and social status at the preadmission level. Any worsening, if present, is slight and does not influence perceived QOL.