Results of noninvasive ventilation in very old patients

Highlights from the Respiratory Failure and Mechanical Ventilation 2022 Conference

The Respiratory Intensive Care Assembly of the European Respiratory Society gathered in Berlin to organise the second Respiratory Failure and Mechanical Ventilation Conference in June 2022. The conference covered several key points of acute and chronic respiratory failure in adults. During the 3-day conference, ventilatory strategies, patient selection, diagnostic approaches, treatment and health-related quality of life topics were addressed by a panel of international experts. Lectures delivered during the event have been summarised by Early Career Members of the Assembly and take-home messages highlighted.

Effects of age and comorbidities on prognosis and mortality in geriatric patient groups in ıntensive Care

Backround

Treatment of geriatric intensive care patients is tiring and difficult for intensive care physicians due to comorbidities, accompanying acute illnesses and vulnerabilities.

Aim

The aim of our study was to determine other factors affecting mortality and morbidity with age in geriatric intensive care patients.

Patients and Methods

A total of 937 geriatric intensive care patients were divided into three groups as young-old (65-74 years), middle-old (75-84 years), and oldest-old (85 years and more). Demographic characteristics such as age, gender, and comorbid diseases (oncological malignancy, chronic renal failure, sepsis, chronic anemia, hypertension, diabetes mellitus, chronic obstructive pulmonary disease, pulmonary embolism) were recorded. The number of patients who needed a mechanical ventilator, developed decubit ulcers, underwent percutaneous tracheostomy, and renal replacement therapy were recorded. In addition, the number of central venous catheter insertions for patients, Acute Physiology and Chronic Health Evaluation II scores (APACHE II), hospitalization days, and mortality rates were recorded and compared.

Results

In the comparison between the groups in terms of gender, in the 65-74 years' age group, male gender was higher, while in the age group of 85 years and more, the female gender was found to be statistically higher. Among comorbid diseases, the rate of oncological malignancy was found to be statistically significantly lower in patients aged 85 years and more. Comparing the APACHE II scores of the patients as per the groups, scores were found to be statistically significantly higher in the oldest-old group. APACHE II Score, central venous catheter application, chronic obstructive pulmonary disease, chronic renal failure, sepsis, oncological malignancy, and renal replacement therapy were shown to be statistically significant as factors affecting death. The factors affecting the survival or hospitalization time of the patients of decubit ulcer, mechanical ventilator, percutaneous tracheostomy, chronic obstructive pulmonary disease, Sepsis, APACHE II Score, and age were shown to be statistically significant.

Conclusion

Our study showed that not only age has an effect on mortality and morbidity in geriatric intensive care patients but also comorbidities and intensive care treatments of the patients are also effective in this process.

Cardiac arrest and complications during non-invasive ventilation: a systematic review and meta-analysis with meta-regression

PURPOSE

The aim of this study was to perform a systematic review and meta-analysis to investigate the incidence rate of cardiac arrest and severe complications occurring under non-invasive ventilation (NIV).

METHODS

We performed a systematic review and meta-analysis of studies between 1981 and 2020 that enrolled adults in whom NIV was used to treat acute respiratory failure (ARF). We generated the pooled incidence and confidence interval (95% CI) of NIV-related cardiac arrest per patient (primary outcome) and performed a meta-regression to assess the association with study characteristics. We also generated the pooled incidences of NIV failure and hospital mortality.

RESULTS

Three hundred and eight studies included a total of 7,601,148 participants with 36,326 patients under NIV (8187 in 138 randomized controlled trials, 9783 in 99 prospective observational studies, and 18,356 in 71 retrospective studies). Only 19 (6%) of the analyzed studies reported the rate of NIV-related cardiac arrest. Forty-nine cardiac arrests were reported. The pooled incidence was 0.01% (95% CI 0.00-0.02, I² = 0% (0-15)). NIV failure was reported in 4371 patients, with a pooled incidence of 11.1% (95% CI 9.0-13.3). After meta-regression, NIV failure and the study period (before 2010) were significantly associated with NIV-related cardiac arrest. The hospital mortality pooled incidence was 6.0% (95% CI 4.4-7.9).

CONCLUSION

Cardiac arrest related to NIV occurred in one per 10,000 patients under NIV for ARF treatment. NIV-related cardiac arrest was associated with NIV failure.

Morbimortality and Six-Month Survival Among Elderly Patients Treated With Noninvasive Mechanical Ventilation in an Intermediate Care Unit: A Retrospective Evaluation

BACKGROUND

Noninvasive mechanical ventilation (NIMV) has been established as a successful therapeutic option for patients with acute respiratory failure (ARF) with a specific etiology.

OBJECTIVES

This study evaluated the morbimortality of patients with ARF treated with NIMV in a medical intermediate care unit (UCINT) to identify factors associated with higher in-hospital mortality, six-month mortality, and three- and six-month hospital readmission rates.

METHODS

This retrospective cohort study included elderly patients admitted for ARF and treated with NIMV in the UCINT between 2015 and 2019.

RESULTS

In the sample of 102 patients, the median age was 84.2 (±5.5) years, and 57% were women. In total, 28% were on long-term oxygen therapy, and 68% had a do-not-resuscitate order. At admission, the median Charlson comorbidity index and Barthel index of activities of daily living were 7 [6; 8] and 30 [20; 57,5], respectively. The simplified acute physiology score II was 39.1±10.7, and 92% of patients had type 2 ARF. Median days on NIMV and days in UCINT were 10 [6; 16] and 6 [3; 10], respectively. The main conditions requiring UCINT admission for NIMV were heart failure, pneumonia, and exacerbation of the chronic obstructive pulmonary disease. The NIMV failure rate was 7%. At discharge, the average Barthel index was 35 [10; 55]. The in-hospital mortality rate was 23%.

DISCUSSION

 Older age, higher simplified acute physiology score II, higher Charlson comorbidity index, and higher number of days on NIMV were associated with higher in-hospital mortality. Long-term oxygen therapy was associated with higher three-month mortality. A higher Barthel index at the time of hospital discharge was associated with a higher six-month readmission rate.

CONCLUSION

NIMV can be used successfully in elderly patients and less studied ARF etiologies, such as pneumonia.

One-Year Follow up of Noninvasive Respiratory Support in General Wards

BACKGROUND

Noninvasive respiratory support (NRS) has been used to treat acute respiratory failure outside the ICU, but existing data have left many knowledge gaps for managing NRS in general wards. The primary objective of this study was to describe indications, duration of treatment, and outcomes of subjects treated with NRS outside the ICU. The secondary objective was to compare outcomes based on age < 80 or ≥ 80 y.

METHODS

This retrospective observational study was conducted at Maggiore della Carità University Hospital in Novara, Italy, and included all patients treated with noninvasive ventilation (NIV) or CPAP outside the ICU from November 2017 to October 2018, with 1 year of follow-up.

RESULTS

Of the 570 treatments performed, 383 subjects were analyzed, 136 NIV and 247 CPAP. Subjects' median (interquartile range [IQR]) age was 79 (72-85) y, and the main diagnoses of respiratory failure were cardiogenic pulmonary edema in 128 subjects (33%), pneumonia in 99 (26%), and COPD exacerbation in 52 (14%), with a median (IQR) treatment duration of 38 (16-74) h. Rapid response team visits lasted a median (IQR) 3 (2-6) d. Interface-related pressure lesions occurred in 13% of the subjects, in no case leading to definitive treatment discontinuation. Compared with the subjects ≥ 80 y old, the younger subjects had a median (IQR) longer hospitalization (16 [10-24] d vs 13 [9-20] d; P = .003) but slightly decreased in-hospital mortality (21% vs 30%; P = .061) and a decreased post-discharged 1-year mortality in hospital survivors (25% vs 41%; P = .002), differences observed only in the subjects treated with NIV.

CONCLUSIONS

In a real-life setting outside the ICU, NIV and CPAP managed by a rapid response team with a daily visit in collaboration with ward staff highly experienced in NRS allowed us to treat the subjects without major complications. Post-discharge 1-year mortality was higher in the subjects ≥ 80 y old treated with NIV for acute hypercapnic respiratory failure.

Clinical Outcomes in Patients Aged 80 Years or Older Receiving Non-Invasive Respiratory Support for Hypoxemic Acute Respiratory Failure Consequent to COVID-19

As the clinical outcome of octogenarian patients hospitalised for COVID-19 is very poor, here we assessed the clinical characteristics and outcomes of patients aged 80 year or older hospitalised for COVID-19 receiving non-invasive respiratory support (NIRS). A multicentre, retrospective, observational study was conducted in seven hospitals in Northern Italy. All patients aged ≥80 years with COVID-19 associated hypoxemic acute respiratory failure (hARF) undergoing NIRS between 24 February 2020, and 31 March 2021, were included. Out of 252 study participants, 156 (61.9%) and 163 (64.6%) died during hospital stay and within 90 days from hospital admission, respectively. In this case, 228 (90.5%) patients only received NIRS (NIRS group), while 24 (9.5%) were treated with invasive mechanical ventilation (IMV) after NIRS failure (NIRS+IMV group). In-hospital mortality did not significantly differ between NIRS and NIRS+IMV group (61.0% vs. 70.8%, respectively; p = 0.507), while survival probability at 90 days was significantly higher for NIRS compared to NIRS+IMV patients (0.379 vs. 0.147; p = 0.0025). The outcome of octogenarian patients with COVID-19 receiving NIRS is quite poor. Caution should be used when considering transition from NIRS to IMV after NIRS failure.

Noninvasive ventilation in patients with COVID-19 from the perspective of the risk of contamination: a narrative review

INTRODUCTION

noninvasive ventilation (NIV) can be a useful resource to treat acute respiratory failure (ARF), which occurs in patients with COVID-19. However, it is important to consider that there are still no clinical studies that have verified the safety of its use in increase of contamination.

AREAS COVERED

Given the potential benefits and simultaneous concerns over the use of NIV in patients with COVID-19, further inquiry is necessary to reach a clinical consensus and provide recommendations for safe use, avoiding contamination. In this context, this narrative review, which included articles published in the Embase, SciELO, PEDro, PubMed and Cochrane up to August 2021, is focused to evaluate available studies related to interfaces, types of circuits, recommended filters, cares for the environment and protective factors for NIV use in patients with COVID-19.

EXPERT OPINION

The studies analyzed recommend that the use of NIV can be safe: 1) with equipment that allows the use of the helmet as a safer interface; 2) with double circuit and antimicrobial filter in the expiratory branch; 3) in an environment that allows negative pressure, reducing the dispersion of aerosol particles in the environment; 4) the health team must use the recommended PPE to avoid contamination.

Noninvasive ventilation in critically ill very old patients with pneumonia: A multicenter retrospective cohort study

Background

Very old patients (≥ 80 years-old, VOP) are increasingly admitted to intensive care units (ICUs). Community-acquired pneumonia (CAP) is a common reason for admission and the best strategy of support for respiratory failure in this scenario is not fully known. We evaluated whether noninvasive ventilation (NIV) would be beneficial compared to invasive mechanical ventilation (IMV) regarding hospital mortality.

Methods

Multicenter cohort study of VOPs admitted with CAP in need of IMV or NIV to 11 Brazilian ICUs from 2009 through 2012. We used logistic regression models to evaluate the association between the initial ventilatory strategy (NIV vs. IMV) and hospital mortality adjusting for confounding factors. We evaluated effect modification with interaction terms in pre-specified sub-groups.

Results

Of 369 VOPs admitted for CAP with respiratory failure, 232 (63%) received NIV and 137 (37%) received IMV as initial ventilatory strategy. IMV patients were sicker at baseline (median SOFA 8 vs. 4). Hospital mortality was 114/232 (49%) for NIV and 90/137 (66%) for IMV. For the comparison NIV vs. IMV (reference), the crude odds ratio (OR) was 0.50 (95% CI, 0.33–0.78, p = 0.002). This association was largely confounded by antecedent characteristics and non-respiratory SOFA (_adjOR = 0.70, 95% CI, 0.41–1.20, p = 0.196). The fully adjusted model, additionally including P_ao₂/F_io₂ ratio, pH and P_aco₂, yielded an _adjOR of 0.81 (95% CI, 0.46–1.41, p = 0.452). There was no strong evidence of effect modification among relevant subgroups, such as P_ao₂/F_io₂ ratio ≤ 150 (p = 0.30), acute respiratory acidosis (p = 0.42) and non-respiratory SOFA ≥ 4 (p = 0.53).

Conclusions

NIV was not associated with lower hospital mortality when compared to IMV in critically ill VOP admitted with CAP, but there was no strong signal of harm from its use. The main confounders of this association were both the severity of respiratory dysfunction and of extra-respiratory organ failures.

Don't forget shared decision-making in the COVID-19 crisis

Mechanical ventilation as a resource is limited and may lead to poor outcomes in at‐risk populations. Critical care supports may not be preferred by those at risk of deterioration in the COVID‐19 setting. Patient‐centred communication and shared decision‐making should continue to remain central to clinical practice.

Do-not-intubate orders in patients with acute respiratory failure: a systematic review and meta-analysis

PURPOSE

To assess the rates and variability of do-not-intubate orders in patients with acute respiratory failure.

METHODS

We conducted a systematic review of observational studies that enrolled adult patients with acute respiratory failure requiring noninvasive ventilation or high-flow nasal cannula oxygen from inception to 2019.

RESULTS

Twenty-six studies evaluating 10,755 patients were included. The overall pooled rate of do-not-intubate orders was 27%. The pooled rate of do-not-intubate orders in studies from North America was 14% (range 9-22%), from Europe was 28% (range 13-58%), and from Asia was 38% (range 9-83%), p = 0.001. Do-not-intubate rates were higher in studies with higher patient age and in studies where do-not-intubate decisions were made without reported patient/family input. There were no significant differences in do-not-intubate orders according to illness severity, observed mortality, malignancy comorbidity, or methodological quality. Rates of do-not-intubate orders increased over time from 9% in 2000-2004 to 32% in 2015-2019. Only 12 studies (46%) reported information about do-not-intubate decision-making processes. Only 4 studies (15%) also reported rates of do-not-resuscitate.

CONCLUSIONS

One in four patients with acute respiratory failure (who receive noninvasive ventilation or high-flow nasal cannula oxygen) has a do-not-intubate order. The rate of do-not-intubate orders has increased over time. There is high inter-study variability in do-not-intubate rates-even when accounting for age and illness severity. There is high variability in patient/family involvement in do-not-intubate decision making processes. Few studies reported differences in rates of do-not-resuscitate and do-not-intubate-even though recovery is very different for acute respiratory failure and cardiac arrest.

Baseline and clinical characteristics of older adults admitted to the intensive care unit through the emergency room: Analysis based on age groups

Background and Objectives:

There is currently no consensus on the criteria for admitting older adults to the intensive care unit.

Methods:

This single-center retrospective study evaluated the baseline and clinical characteristics of older adults admitted to the intensive care unit between January 2017 and June 2017; patients were analyzed according to their age group. Factors associated with in-hospital mortality were specifically determined using logistic regression analysis.

Results:

Among 582 patients included in the present study, 34.2%, 46.6%, and 19.2% were aged 65–74, 75–84, and over 84 years, respectively. In terms of clinical outcomes, although there were no significant differences in the length of intensive care unit and hospital stay and intensive care unit mortality, significant differences were observed in terms of in-hospital mortality, hospital discharge disposition, and neurologic outcomes at discharge ( p = 0.039, p = 0.005, and p = 0.032, respectively). Predictive factors for in-hospital mortality were age (⩾85 years), initial mental status (stupor to coma), a Korean Triage and Acuity Scale level of 1, underlying diagnosis of cancer, abdominal pain or discomfort, apnea, and a chief compliant of dyspnea.

Conclusion:

Compared to those aged 65–84 years, in-hospital mortality was 1.96-fold higher in those aged over 84 years. However, the overall mortality in our cohort was not considerably different from that of the younger population. Intensive care unit admission should be considered in selected older adults after evaluating the risk factors for mortality.

Noninvasive Ventilation in Patients With Do-Not-Intubate and Comfort-Measures-Only Orders: A Systematic Review and Meta-Analysis

OBJECTIVES

To assess the effectiveness of noninvasive ventilation in patients with acute respiratory failure and do-not-intubate or comfort-measures-only orders.

DATA SOURCES

MEDLINE, EMBASE, CINAHL, Scopus, and Web of Science from inception to January 1, 2017.

STUDY SELECTION

Studies of all design types that enrolled patients in the ICU or hospital ward who received noninvasive ventilation and had preset do-not-intubate or comfort-measures-only orders.

DATA EXTRACTION

Data abstraction followed Meta-analysis of Observational Studies in Epidemiology guidelines. Data quality was assessed using a modified Newcastle-Ottawa Scale.

DATA SYNTHESIS

Twenty-seven studies evaluating 2,020 patients with do-not-intubate orders and three studies evaluating 200 patients with comfort-measures-only orders were included. In patients with do-not-intubate orders, the pooled survival was 56% (95% CI, 49-64%) at hospital discharge and 32% (95% CI, 21-45%) at 1 year. Hospital survival was 68% for chronic obstructive pulmonary disease, 68% for pulmonary edema, 41% for pneumonia, and 37% for patients with malignancy. Survival was comparable for patients treated in a hospital ward versus an ICU. Quality of life of survivors was not reduced compared with baseline, although few studies evaluated this. No studies evaluated quality of dying in nonsurvivors. In patients with comfort-measures-only orders, a single study showed that noninvasive ventilation was associated with mild reductions in dyspnea and opioid requirements.

CONCLUSIONS

A large proportion of patients with do-not-intubate orders who received noninvasive ventilation survived to hospital discharge and at 1 year, with limited data showing no decrease in quality of life in survivors. Provision of noninvasive ventilation in a well-equipped hospital ward may be a viable alternative to the ICU for selected patients. Crucial questions regarding quality of life in survivors, quality of death in nonsurvivors, and the impact of noninvasive ventilation in patients with comfort-measures-only orders remain largely unanswered.

Cumulative Prognostic Score Predicting Mortality in Patients Older Than 80 Years Admitted to the ICU

OBJECTIVES

To develop a scoring system model that predicts mortality within 30 days of admission of patients older than 80 years admitted to intensive care units (ICUs).

DESIGN

Prospective cohort study.

SETTING

A total of 306 ICUs from 24 European countries.

PARTICIPANTS

Older adults admitted to European ICUs (N = 3730; median age = 84 years [interquartile range = 81‐87 y]; 51.8% male).

MEASUREMENTS

Overall, 24 variables available during ICU admission were included as potential predictive variables. Multivariable logistic regression was used to identify independent predictors of 30‐day mortality. Model sensitivity, specificity, and accuracy were evaluated with receiver operating characteristic curves.

RESULTS

The 30‐day‐mortality was 1562 (41.9%). In multivariable analysis, these variables were selected as independent predictors of mortality: age, sex, ICU admission diagnosis, Clinical Frailty Scale, Sequential Organ Failure Score, invasive mechanical ventilation, and renal replacement therapy. The discrimination, accuracy, and calibration of the model were good: the area under the curve for a score of 10 or higher was .80, and the Brier score was .18. At a cut point of 10 or higher (75% of all patients), the model predicts 30‐day mortality in 91.1% of all patients who die.

CONCLUSION

A predictive model of cumulative events predicts 30‐day mortality in patients older than 80 years admitted to ICUs. Future studies should include other potential predictor variables including functional status, presence of advance care plans, and assessment of each patient's decision‐making capacity.

Outcomes of non-invasive ventilation in 'very old' patients with acute respiratory failure: a retrospective study

BACKGROUND

Non-invasive ventilation (NIV) is increasingly used to support very old (aged ≥85 years) patients with acute respiratory failure (ARF). This retrospective observational study evaluated the impact of NIV on the prognosis of very old patients who have been admitted to the intermediate care unit (IMC) of the Emergency Department of the University Hospital Policlinico-Vittorio Emanuele of Catania for ARF.

METHODS

All patients admitted to the IMC between January and December 2015 who received NIV as the treatment for respiratory failure were included in this study. Outcomes of patients aged ≥85 years were compared with lower ages. The expected intrahospital mortality was calculated through the Simplified Acute Physiology Score (SAPS) II and compared with the observed mortality.

RESULTS

The mean age was 87.9±2.9 years; the M:F ratio was approximately 1:3. The average SAPS II was 50.1±13.7. The NIV failure rate was 21.7%. The mortality in the very old group was not statistically different from the younger group (20% vs 25.6%; d=5.6%; 95% CI -8% to 19%; p=0.404). The observed mortality was significantly lower than the expected mortality in both the group ≥85 (20.0% vs 43.4%, difference=23.4%; 95% CI 5.6% to 41.1%, p=0.006) and the younger group (25.6% vs 38.5%, difference=12.9%; 95% CI -0.03% to 25.8%, p=0.046). In both age groups, patients treated with NIV for chronic obstructive pulmonary disease had lower mortalities than those treated for other illnesses, although this was statistically significant only in the younger group.

CONCLUSION

In very old patients, when used with correct indications, NIV was associated with mortality similar to younger patients. Patients receiving NIV had lower than expected mortality in all age groups.

Benefits of non-invasive ventilation in acute hypercapnic respiratory failure

Non-invasive ventilation (NIV) with bilevel positive airway pressure is a non-invasive technique, which refers to the provision of ventilatory support through the patient's upper airway using a mask or similar device. This technique is successful in correcting hypoventilation. It has become widely accepted as the standard treatment for patients with hypercapnic respiratory failure (HRF). Since the 1980s, NIV has been used in intensive care units and, after initial anecdotal reports and larger series, a number of randomized trials have been conducted. Data from these trials have shown that NIV is a valuable treatment for HRF. This review aims to explore the principal areas in which NIV can be useful, focusing particularly on patients with acute HRF (AHRF). We will update the evidence base with the goal of supporting clinical practice. We provide a practical description of the main indications for NIV in AHRF and identify the group of patients with hypercapnic failure who will benefit most from the application of NIV.

The impact of frailty on noninvasive mechanical ventilation in elderly medical intensive care unit patients

AIM

Many factors affecting noninvasive ventilation (NIV) in critically ill patients have been reported in the literature, but there is no study about the effect of frailty. With this study, the frailty prevalence was evaluated with two different frailty scores among the NIV population of a medical intensive care unit (ICU). Besides, the impact of frailty on NIV success and mortality and its association with NIV application problems were evaluated.

METHOD

A prospective observational cohort study was performed on patients who were over 50 years of age and assigned to NIV due to hypercapnic respiratory failure. For the assessment of frailty, Clinical Frailty Scale (CFS) and The Edmonton Frailty Scale (EFS) were used and the ones with CFS ≥5 and EFS ≥8 were considered as fragile. The study population was classified and compared according to NIV success, ICU outcome (discharge or exitus) and NIV application problems.

RESULTS

A total of 103 patients with the mean age of 73 ± 11 years were included. The incidence of frailty was 41% with CFS ≥5 and 36% with EFS ≥8. The NIV failure occurred in 30 (29%) patients. Among them frailty and SOFA score was higher; Glasgow Coma Scale (GCS) was lower. In multivariate analysis GCS (OR: 1.2, p: 0.042) and frailty with EFS (OR: 2.8, p: 0.027) were identified as independent risk factors of NIV failure. Sixty-five (63%) patients had NIV application problems and frailty was higher among them with both CFS and EFS (p < 0.05). Mortality occurred in 18 (17%) patients; NIV failure and frailty according to CFS were independent risk factors of mortality.

CONCLUSION

The frailty is associated with higher NIV application problems, failure and mortality risk in elderly ICU patients. The CFS and EFS frailty scores can be used to predict NIV success and outcomes in ICUs.

Caring for critically ill oldest old patients: a clinical review

Despite technological advances, the mortality rate for critically ill oldest old patients remains high. The intensive caring should be able to combine technology and a deep humanity considering that the patients are living the last part of their lives. In addition to the traditional goals of ICU of reducing morbidity and mortality, of maintaining organ functions and restoring health, caring for seriously oldest old patients should take into account their end-of-life preferences, the advance or proxy directives if available, the prognosis, the communication, their life expectancy and the impact of multimorbidity. The aim of this review was to focus on all these aspects with an emphasis on some intensive procedures such as mechanical ventilation, noninvasive mechanical ventilation, cardiopulmonary resuscitation, renal replacement therapy, hemodynamic support, evaluation of delirium and malnutrition in this heterogeneous frail ICU population.

[Elderly patients and intensive care: Systematic review and geriatrician's point of view]

The global population is aging and intensive care unit admission rate of elderly patients is dramatically increasing. The objective of this review is to provide an overview of the literature about the management of elderly patients in intensive care unit and more specifically about epidemiology, admission criteria, mortality, functional prognosis and ethical aspects. We also discuss the data on cardiorespiratory arrest, shock, acute respiratory failure and delirium. The mortality rate of patients over 80 years old in intensive care unit can reach up to 70% at 1year, but is dependent on many factors, such as comorbidities or frailty. Above all, more than half of elderly patients recover their long-term autonomy. Their quality of life is comparable to that of the same age population. Considering that the first 3months after an intensive care unit stay are the most decisive in terms of vital and functional prognosis, we will discuss strategies to improve care through the creation of dedicated intensive care-geriatrics networks.

Failure of Noninvasive Ventilation for De Novo Acute Hypoxemic Respiratory Failure: Role of Tidal Volume

OBJECTIVES

A low or moderate expired tidal volume can be difficult to achieve during noninvasive ventilation for de novo acute hypoxemic respiratory failure (i.e., not due to exacerbation of chronic lung disease or cardiac failure). We assessed expired tidal volume and its association with noninvasive ventilation outcome.

DESIGN

Prospective observational study.

SETTING

Twenty-four bed university medical ICU.

PATIENTS

Consecutive patients receiving noninvasive ventilation for acute hypoxemic respiratory failure between August 2010 and February 2013.

INTERVENTIONS

Noninvasive ventilation was uniformly delivered using a simple algorithm targeting the expired tidal volume between 6 and 8 mL/kg of predicted body weight.

MEASUREMENTS

Expired tidal volume was averaged and respiratory and hemodynamic variables were systematically recorded at each noninvasive ventilation session.

MAIN RESULTS

Sixty-two patients were enrolled, including 47 meeting criteria for acute respiratory distress syndrome, and 32 failed noninvasive ventilation (51%). Pneumonia (n = 51, 82%) was the main etiology of acute hypoxemic respiratory failure. The median (interquartile range) expired tidal volume averaged over all noninvasive ventilation sessions (mean expired tidal volume) was 9.8 mL/kg predicted body weight (8.1-11.1 mL/kg predicted body weight). The mean expired tidal volume was significantly higher in patients who failed noninvasive ventilation as compared with those who succeeded (10.6 mL/kg predicted body weight [9.6-12.0] vs 8.5 mL/kg predicted body weight [7.6-10.2]; p = 0.001), and expired tidal volume was independently associated with noninvasive ventilation failure in multivariate analysis. This effect was mainly driven by patients with PaO2/FIO2 up to 200 mm Hg. In these patients, the expired tidal volume above 9.5 mL/kg predicted body weight predicted noninvasive ventilation failure with a sensitivity of 82% and a specificity of 87%.

CONCLUSIONS

A low expired tidal volume is almost impossible to achieve in the majority of patients receiving noninvasive ventilation for de novo acute hypoxemic respiratory failure, and a high expired tidal volume is independently associated with noninvasive ventilation failure. In patients with moderate-to-severe hypoxemia, the expired tidal volume above 9.5 mL/kg predicted body weight accurately predicts noninvasive ventilation failure.

Non-invasive mechanical ventilation in elderly patients: A narrative review

The treatment of acute respiratory failure with non-invasive ventilation (NIV) as a first-line therapy is increasingly common in intensive care units. The reduced invasiveness of NIV leads to better outcomes than endotracheal intubation in carefully selected groups of patients. Furthermore, the use of NIV as a palliative treatment for respiratory failure and dyspnea has become increasingly common. NIV also has an impact on the use of "do not intubate" orders. In the present narrative review, we explore the use and outcome of NIV in elderly patients. To accomplish this, we reviewed the most recent available medical literature. Geriatr Gerontol Int 2017; 17: 689-696.

The Role of Noninvasive Ventilation in Patients with "Do Not Intubate" Order in the Emergency Setting

Background

Noninvasive ventilation (NIV) is being used increasingly in patients who have a “do not intubate” (DNI) order. However, the impact of NIV on the clinical and health-related quality of life (HRQOL) in the emergency setting is not known, nor is its effectiveness for relieving symptoms in end-of-life care.

Objective

The aim of this prospective study was to determine the outcome and HRQOL impact of regular use of NIV outcomes on patients with a DNI order who were admitted to the emergency room department (ED). Methods: Eligible for participation were DNI-status patients who receive NIV for acute or acute-on-chronic respiratory failure when admitted to the ED of a tertiary care, university-affiliated, 600-bed hospital between January 2014 and December 2014. Patients were divided into 2 groups: (1) those whose DNI order related to a decision to withhold therapy and (2) those for whom any treatment, including NIV, was provided for symptom relief only. HRQOL was evaluated only in group 1, using the 12-item Short Form Health Survey (SF-12). Long-term outcome was evaluated 90 days after hospital discharge by means of a telephone interview.

Results

During the study period 1727 patients were admitted to the ED, 243 were submitted to NIV and 70 (29%) were included in the study. Twenty-nine (41%) of the 70 enrollees received NIV for symptom relief only (group2). Active cancer [7% vs 35%, p = 0,004] and neuromuscular diseases [0% vs. 17%] were more prevalent in this group. NIV was stopped in 59% of the patients in group 2 due to lake of clinical benefit. The in-hospital mortality rate was 37% for group 1 and 86% for group 2 0,001). Among patients who were discharged from hospital, 23% of the group 1 and all patients in group 2 died within 90 days. Relative to baseline, no significant decline in HRQOL occurred in group 1 by 90 days postdischarge.

Conclusion

The survival rate was 49% among DNI-status patients for whom NIV was used as a treatment in ED, and these patients did not experience a decline in HRQOL throughout the study. NIV did not provide significant relief of symptoms in more than half the patients who receive it for that purpose.

[Non-invasive ventilation in 'do-not-intubate' patients in a chronic disease hospital. One year follow-up study]

Elderly patients with multiple morbidity and do not intubate (DNI) orders frequently present with acute respiratory failure. There are data supporting the effectiveness of non-invasive ventilation (NIV) in this context. Our chronic disease hospital developed an integrated care clinical pathway for the use of NIV in acute respiratory failure in the emergency room and wards in 2010. The aim of this study was to assess the outcome of NIV in patients with acute respiratory failure who had a DNI order in a sub-acute care hospital.

METHODS

Observational, one year-follow up study. The main variables were in-hospital mortality and one year mortality. Other variables recorded were: demographics, clinical data, functional data, performance of daily life activities, dementia, arterial blood gases and re-admissions.

RESULTS

The study included a total of 102 patients, of which 22% were in institutions. The mean age 81±7.47% males, with a Charlson index 3.7±1, and Barthel index 54±31. The overall mortality during the admission was 33% (34 patients). Among those patients ventilated outside the protocol indication, the mortality was significantly greater, at 71% (P>.05). Overall one-year survival rate was 46%. This survival rate was statistically higher in patients with obesity hypoventilation syndrome and a Barthel >50.

CONCLUSIONS

NIV is a useful technique in a hospital for chronic patients in an elderly population with a therapeutic ceiling. Despite their disease severity and comorbidity, acceptable survival rates are achieved. A correct case selection is needed. Obesity hypoventilation syndrome and those with Barthel index >50 have a better prognosis.

Non-invasive ventilation for very old patients with limitations to respiratory care in half-open geriatric ward: experience on a consecutive cohort of patients

INTRODUCTION

A leading role for non-invasive ventilation (NIV), as comfort treatment or palliative care, is actually recognized for very old patients suffering from ARF. NIV was frequently used in both ICU and respiratory ICU (RICUs) for very old patients and it is associated with a reduced rate of endotracheal intubations and mortality. This study aims to evaluate the effects of NIV, performed in a setting of half-open geriatric ward with family support, in a cohort of very old patients with ARF and DNI decision.

METHODS

A consecutive cohort of 20 very old patients with DNI decision was admitted in our 26-bed geriatric ward during a 6 months' period. DNI decision was obtained in emergency room with an intensive care physician supported by a psychologist. Pressure support ventilation was the first choice of NIV. NIV has been performed by three adequately trained geriatricians, with one of them experienced in ICU, and in close collaboration with intensive care physicians. Arterial blood gases, to assess the response to ventilation, were obtained after 1, 6 and 12 h. NIV settings were modified according to arterial blood gas analyses or respiratory fatigue, if needed.

RESULTS

Therefore, 75% of patients were discharged home and 12 out of 20 patients had home respiratory support. PaO2/FiO2 ratio and pH increased while PaCO2 decreased during the 12 h of NIV with statistical significance. At the admission, alive patients had PaCO2 significantly lower than dead patients. After 12 h, alive patients had a better pH than dead patients. Dead patients experienced more complication than survivors.

CONCLUSION

Very old DNI patients with ARF could be treated with NIV in half-open geriatric ward with trained physicians and nurses. The presence of family members may improve patients' comfort and reduce anxiety level even at the end of life. Further studies are needed to address the effective role of NIV in very old patients with DNI decisions.