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Delirium, which is an important risk factor for post-intensive care syndrome (PICS), is common during critical illness, affecting between 20% and 80% of patients. It is associated with numerous adverse outcomes, including longer time on mechanical ventilation, longer time in the intensive care unit (ICU) and hospital, death, and long-term cognitive impairment. Delirium in the ICU can be reliably detected using multiple tools, including the Confusion Assessment Method in the ICU (CAM-ICU) and the Intensive Care Delirium Screening Checklist (ICDSC). The exact cause of delirium, however, remains elusive even though there are many purported mechanisms, including neuroinflammation, metabolic insufficiency, neuronal dysfunction, and neurotransmitter disturbances. Due to knowledge gaps regarding the mechanism(s) of delirium, effective medical treatments for delirium also remains elusive. Current practice involves the prevention of delirium through the recognition and management of modifiable risk factors. The well-studied ABCDEF bundle is one such strategy, which is primarily non-pharmacologic, to prevent or mitigate delirium and thus limit its adverse outcomes. Unfortunately, delirium still occurs at a high rate, and the work to understand the underlying mechanism and its varied manifestations and to develop an effective treatment continues.
Sleep disturbances frequently precede and are exacerbated by critical illness, persisting well into the recovery phase. These issues are prevalent among ICU survivors and can aggravate physical, cognitive, and psychosocial symptoms associated with Post-Intensive Care Syndrome (PICS). This chapter reviews the outpatient evaluation of patients experiencing sleep problems after ICU discharge, emphasizing the importance of addressing sleep issues as part of a comprehensive PICS assessment. Recent studies reveal high prevalence of sleep disturbances following the ICU, with symptoms such as difficulty falling asleep, poor sleep quality, and nightmares. Insomnia, excessive daytime sleepiness, and obstructive sleep apnea (OSA) are also common post-ICU issues. Evaluation should include assessing sleep quality, reviewing medications, and screening for common sleep disorders. Cognitive Behavioral Therapy for Insomnia (CBT-i) is recommended for chronic insomnia, while imagery rehearsal therapy is suggested for PTSD-related nightmares. Additionally, OSA screening is crucial due to its potential impact on recovery and quality of life. Addressing these concerns through an ICU follow-up clinic may improve patient outcomes, enhance recovery, and mitigate the long-term effects of critical illness on sleep and overall health.
Social determinants of health (SDOH) are defined as the non-medical factors that influence health outcomes. As the conditions in which people are born, live, learn, work, play, and worship, SDOH can impact risk for critical illness, the experience of critical illness, and their prognosis and recovery. SDOH may further impact survival after critical illness given the risks of vocational disability, loss of income, familial and financial costs of medical care, and social isolation. A holistic approach to treating critical illness facilitates coordination of collaborative care to identify and address SDOH. Social workers have particularly essential roles in critical illness, and can contribute to the research, policy, and practice efforts to improve the recovery process and outcomes for survivors of critical illness. This chapter summarizes the relationship of SDOH to survivorship following critical illness, and prioritizes the role of the social worker to identify and address SDOH.
Millions of Americans survive critical illness each year, only to be faced with new life-altering impairments in physical, cognitive, and mental health function that alter their ability to live independently. The mechanisms underlying these sequelae of critical illness are incompletely understood but are believed to develop as a function of the severity of the critical illness and the patient’s underlying vulnerability. Clinically, a patient’s underlying vulnerability can be understood as the syndrome of frailty.
Frailty affects 30% of those with critical illness and over 40% of survivors of critical illness. The presence of frailty at ICU admission confers a greater risk of death and, among survivors, disability in activities of daily living. Validated tools including the Clinical Frailty Scale, the frailty index, and the frailty phenotype can be used to identify frailty in those affected by critical illness. While effective interventions such as physical activity, nutritional support, and palliative care can reduce age-related frailty among community-dwelling older adults, the efficacy of these interventions in those along the continuum of critical illness is an area of ongoing study.
Despite surviving critical illness, limitations in physical function can be present for months to years following hospital discharge. Physical disability in survivors of critical illness may present as an impairment in a single body function or as multiple deficits by affecting several body structures and domains. Physical therapists should utilize performance-based and self-report outcome measures to assess physical disability in individuals surviving critical illness; assessment should occur early during recovery and be repeated based on individual needs. This chapter reviews the literature highlighting the frequency and severity of physical impairment and disability related to post-intensive care syndrome and describes physical therapy approaches for screening, assessment, and interventions for survivors of critical illness. In this chapter, we use the term physical disability to be inclusive of the physical symptoms, impairments, and limitations in physical function commonly experienced in survivors of critical illness.
For decades, the belief in the critical care community was that survival alone was a good outcome, and although that remains relatively true, it is also clear that survivors of critical illness face numerous debilitating symptoms, physical and neuropsychological morbidities, and functional impairments that require long-term management. As both the number of survivors and recognition of the burden of survivorship have increased significantly over the last 25 years, clinicians and researchers have paid considerably more attention to outcomes beyond mortality. The late 1990s and the early 2000s witnessed a period of significant growth in recognition of and research interest in long-term outcomes after critical illness. Major scientific meetings included significant content on survivorship following critical illness, particularly after the 2002 Brussels Roundtable issued a call to improve critical care research by investigating long-term, patient-centered outcomes beyond mortality alone. The field took a significant leap forward in 2010, when the term post-intensive care syndrome (PICS) was coined to describe the impairments in physical, cognitive, and mental health arising after a critical illness and persisting beyond hospital discharge. Although important in focusing the field, the definition of PICS does not address severity, duration, or impact on other domains of health.
Endogenous biological rhythms synchronise human physiology with daily cycles of light-dark, wake-sleep and feeding-fasting. Proper circadian alignment is crucial for physiological function, reflected in the rhythmic expression of molecular clock genes in various tissues, especially in skeletal muscle. Circadian disruption, such as misaligned feeding, dysregulates metabolism and increases the risk of metabolic disorders like type 2 diabetes. Such disturbances are common in critically ill patients, especially those who rely on enteral nutrition. Whilst continuous provision of enteral nutrition is currently the most common practice in critical care, this is largely dictated by convenience rather than evidence. Conversely, some findings indicate that intermittent provision of enteral nutrition aligned with daylight may better support physiological functions and improve clinical/metabolic outcomes. However, there is a critical need for studies of skeletal muscle responses to acutely divergent feeding patterns, in addition to complementary translational research to map tissue-level physiology to whole-body and clinical outcomes.
Critical illness is associated with multiple undesired impacts, including residual psychological distress, frequently associated with recollections of critical illness. Dignity-related distress is highly prevalent among the one-fifth of critically ill patients who are alert. The distress may be associated with unpleasant recollections of care. We examined whether patients at risk for dignity-related distress had recall of their reported distress approximately 1 week after assessment and whether this recall differed from another high-risk group, specifically patients undergoing dialysis for end-stage renal disease.
Methods
The prospective cohort study included patients with critical illness and patients with end-stage renal disease enrolled from intensive care units (ICUs) and dialysis units at 1 academic center. Distress was assessed using the Patient Dignity Inventory (PDI). Participants received in-patient or telephonic follow-up 7–10 days after the initial interaction. Follow-up encounters focused on recollection of key aspects of the interpersonal interaction as well as the content of the PDI.
Results
A total of 32 critically ill patients participated in initial assessment and follow-up. In total, 26 dialysis patients participated in both phases. The groups’ demographics differed. Fifty percent (n = 16) of critically ill patients and 58% (n = 15) of dialysis patients reported a mean score per item of >1.6, corresponding with severe distress on the PDI. Among the ICU patients, the 95% upper 2-sided confidence interval for the median level of recall was commensurate with the participant having had no recall of the initial interview beyond remembering that there was an interview. The end-stage renal disease group did not demonstrate significantly better recall.
Significance of results
Dignity-related distress is high in both critically ill patients and those with end-stage renal disease; however, recollection of assessment is poor in both groups. Any intervention designed to mitigate dignity-related distress will need either to be immediately deployable or not to be reliant upon recollection for impact.
Several meta-analyses have suggested the beneficial effect of vitamin D on patients infected with severe acute respiratory syndrome coronavirus-2. This umbrella meta-analysis aims to evaluate influence of vitamin D supplementation on clinical outcomes and the mortality rate of COVID-19 patients.
Design:
Present study was designed as an umbrella meta-analysis. The following international databases were systematically searched till March 2023: Web of Science, PubMed, Scopus, and Embase.
Settings:
Random-effects model was employed to perform meta-analysis. Using AMSTAR critical evaluation tools, the methodological quality of the included meta-analyses was evaluated.
Participants:
Adult patients suffering from COVID-19 were studied.
Results:
Overall, 13 meta-analyses summarising data from 4 randomised controlled trial and 9 observational studies were identified in this umbrella review. Our findings revealed that vitamin D supplementation and status significantly reduced mortality of COVID-19 [Interventional studies: (ES = 0·42; 95 % CI: 0·10, 0·75, P < 0·001; I2 = 20·4 %, P = 0·285) and observational studies (ES = 1·99; 95 % CI: 1·37, 2·62, P < 0·001; I2 = 00·0 %, P = 0·944). Also, vitamin D deficiency increased the risk of infection and disease severity among patients.
Conclusion:
Overall, vitamin D status is a critical factor influencing the mortality rate, disease severity, admission to intensive care unit and being detached from mechanical ventilation. It is vital to monitor the vitamin D status in all patients with critical conditions including COVID patients.
Quantification of oral intake within the hospital setting is required to guide nutrition care. Multiple dietary assessment methods are available, yet details regarding their application in the acute care setting are scarce. This scoping review, conducted in accordance with JBI methodology, describes dietary assessment methods used to measure oral intake in acute and critical care hospital patients. The search was run across four databases to identify primary research conducted in adult acute or critical care settings from 1st of January 2000-15th March 2023 which quantified oral diet with any dietary assessment method. In total, 155 articles were included, predominantly from the acute care setting (n = 153, 99%). Studies were mainly single-centre (n = 138, 88%) and of observational design (n = 135, 87%). Estimated plate waste (n = 59, 38%) and food records (n = 43, 28%) were the most frequent assessment methods with energy and protein the main nutrients quantified (n = 81, 52%). Validation was completed in 23 (15%) studies, with the majority of these using a reference method reliant on estimation (n = 17, 74%). A quarter of studies (n = 39) quantified completion (either as complete versus incomplete or degree of completeness) and four studies (2.5%) explored factors influencing completion. Findings indicate a lack of high-quality evidence to guide selection and application of existing dietary assessment methods to quantify oral intake with a particular absence of evidence in the critical care setting. Further validation of existing tools and identification of factors influencing completion is needed to guide the optimal approach to quantification of oral intake in both research and clinical contexts.
Severe COVID-19 survivors experience long-term neuropsychiatric morbidity, particularly those who developed delirium, with a negative impact on health-related quality of life (HRQoL).
Objectives
To identify the cases of delirium in severe COVID-19 patients and to describe its association with post-hospital discharge HRQoL.
Methods
In the context of the longitudinal MAPA project, we included adult patients (≥ 18 years old) admitted with COVID-19 to the Intensive Care Medicine Department (ICMD) of a Portuguese University Hospital (October 2020-April 2021). Exclusion criteria were: ICMD length of stay ≤24h, terminal illness, major auditory loss, or inability to communicate at the time of assessment. Delirium during ICMD stay was ascertained based on patients’ clinical records. HRQoL was evaluated using the 5-Level EQ-5D questionnaire (EQ-5D-5L), at a scheduled telephone follow-up appointment on average 1-2 months after hospital discharge.
Results
Overall, 124 patients were included with a median age of 62 (range: 24-86) years, being mostly male (65%). About 19% had delirium, 42% were deeply sedated and 43% required invasive mechanical ventilation. Most survivors reported problems on the EQ-5D-5L domains: usual activities (85%), mobility (73%) and anxiety/depression (65%). Patients with delirium reported more pain/discomfort (75%vs46%; p=0.011) and considerably anxiety/depression (83%vs60%; p=0.032).
Conclusions
These findings pointed that COVID-19 patients who experienced delirium reported worse HRQoL, regarding pain/discomfort and anxiety/depression. This study highlights the importance of not only prevention but also early screening of delirium during hospital stay, as well as the crucial role of the timely interventions at discharge, in order to minimize delirium long-term impacts.
Long-term neuropsychiatric consequences of critical illness are well known. Therefore, it is expected that critical COVID-19 patients might also present several psychiatric symptoms such as depression, with inevitable negative effect on health-related quality of life (HRQoL), commonly used as an indicator of illness and treatment impact.
Objectives
To identify depressive symptoms in critical COVID-19 survivors and to examine its association with HRQoL domains.
Methods
This preliminary study involved critical COVID-19 patients admitted into the Intensive Care Medicine Department (ICMD) of a University Hospital, between October and December of 2020. Patients with an ICMD length of stay (LoS)≤24h, terminal illness, major auditory loss, or inability to communicate at the follow-up time were excluded. From 1-2 months after discharge, all participants were evaluated by telephone at follow-up appointment, with Patient Health Questionnaire (PHQ-9) (depression) and EuroQol 5-dimension 5-level EQ-5D-5L (HRQoL). This study is part of the longitudinal MAPA project.
Results
Eighty-three patients were included with a median age of 63 years (range: 31-86) and the majority were male (63%). The most reported problems on EQ-5D-5L domains were usual activities (82%) and mobility (76%). About 27% presented depressive symptoms, and with more problems of self-care (68%vs41%; p=0.029), pain/discomfort (86%vs49%; p=0.002), and anxiety/depression (96%vs54%; p<0.001).
Conclusions
These preliminary results are in line in previous studies in critical COVID-19 survivors, with depression being associated with worse HRQoL. Bearing this in mind, follow-up approaches with an early screening and treatment of these psychiatric symptoms will be fundamental to optimize the recovery of these patients.
Evidence suggest that critically ill COVID-19 patients are at higher risk of developing anxiety symptoms, which may be related to or exacerbated by patients concerns regarding their health status and recovery.
Objectives
To assess anxiety symptoms in critically ill COVID-19 survivors, 1-2 months after hospital discharge and to analyze its association with concerns reported by patients regarding their own health status and recovery.
Methods
In the framework of MAPA prospective research, this preliminary study included COVID-19 patients admitted in the Intensive Care Medicine Department (ICMD) of a University Hospital. Patients were excluded if they had an ICMD length of stay (LoS) ≤24h, terminal illness, major auditory impairment or inability to communicate at the evaluation time. Participants were assessed at a scheduled telephone follow-up appointment, with Generalized Anxiety Disorder Scale (GAD-7). Additional questions were asked to assess the survivors’ post-discharge concerns regarding discrimination against for COVID-19, infection of a family member, re-infection or sequelae related to COVID-19.
Results
Eighty-three patients were included (median age=63 years; 63% male) and 24% had anxiety symptoms. Anxiety scores were higher in survivors who reported being afraid of being discriminated against for COVID-19 (30% vs 10%; p=0.034), being re-infected (100% vs 79%; p=0.032) and having sequelae (94% vs 44%; p<0.001).
Conclusions
These findings revealed that anxiety is common in COVID-19 survivors and is associated with post-discharge patients concerns that may limit patient daily living. This study emphasizes the importance of psychological assessment and follow-up of the COVID-19 survivors, in order to support these patients recovery.
Post-extubation dysphagia in critically ill patients is known to affect about 18 per cent of mixed medical-surgical intensive care unit patients. This study investigated the incidence of post-extubation dysphagia in adult intensive care unit patients with coronavirus disease 2019.
Method
This study was a retrospective analysis of consecutive intensive care unit patients prospectively screened for dysphagia. Systematic screening of all extubated intensive care unit patients at our tertiary centre was performed using the Bernese intensive care unit dysphagia algorithm. The primary outcome measure was the incidence of post-extubation dysphagia.
Results
A total of 231 critically ill adult coronavirus disease 2019 positive patients were included, and 81 patients remained in the final analysis after exclusion criteria were applied (e.g. patients transferred). Dysphagia screening positivity was 25 of 81 (30.9 per cent), with 28.2 per cent (22 of 78) having confirmed dysphagia by specialist examination within 24 hours (n = 3 lost to follow up).
Conclusion
In this observational study, it was observed that the incidence of dysphagia in adult critically ill coronavirus disease 2019 patients was about 31 per cent (i.e. increased when compared with a historical pre-pandemic non-coronavirus disease 2019 intensive care unit cohort).
Early in the COVID-19 pandemic, the World Health Organization stressed the importance of daily clinical assessments of infected patients, yet current approaches frequently consider cross-sectional timepoints, cumulative summary measures, or time-to-event analyses. Statistical methods are available that make use of the rich information content of longitudinal assessments. We demonstrate the use of a multistate transition model to assess the dynamic nature of COVID-19-associated critical illness using daily evaluations of COVID-19 patients from 9 academic hospitals. We describe the accessibility and utility of methods that consider the clinical trajectory of critically ill COVID-19 patients.
The coronavirus disease 2019 (COVID-19) pandemic has generated high interest in factors modulating risk of infection, disease severity and recovery. Vitamin D has garnered interest since it is known to modulate immune function and vitamin D deficiency is associated with increased risk of respiratory infections and adverse health outcomes in severely ill patients. There are no population representative data on the direct relationship between vitamin D status and severe acute respiratory syndrome coronavirus 2 infection risk and severity of COVID-19. Data from intervention studies are limited to four studies. Here we summarise findings regarding vitamin D status and metabolism and their alterations during severe illness, relevant to COVID-19 patients. Further, we summarise vitamin D intervention studies with respiratory disease outcomes and in critically ill patients and provide an overview of relevant patient and population guidelines. Vitamin D deficiency is highly prevalent in hospitalised patients, particularly when critically ill, including those with COVID-19. Acute and critical illness leads to pronounced changes in vitamin D metabolism and status, suggestive of increased requirements. This needs to be considered in the interpretation of potential links between vitamin D status and disease risk and severity and for patient management. There is some evidence that vitamin D supplementation decreases the risk of respiratory tract infections, while supplementation of intensive care unit patients has shown little effect on disease severity or length of treatment. Considering the high prevalence of deficiency and low risks associated with supplementation, pro-actively applying current population and patient management guidelines to prevent, monitor and correct vitamin D deficiency is appropriate.
Many studies from around the world, especially NAP4 in the UK, have demonstrated that airway management in critically ill patients, whether in the intensive care unit, emergency department or general wards, is fraught with danger. Serious morbidity or mortality may be 50-fold more common than in anaesthetic practice. This chapter describes the essential features of airway management specific to critical care intubation. The importance of an intubation bundle approach is emphasised, such as the UK’s Difficult Airway Society guidelines for tracheal intubation in the critically ill adult. Components include: (i) deliberate and thoughtful application of human factors science to optimise team performance and sharing the airway plan; (ii) assessment of potential difficulty based on the MACOCHA scoring system; (iii) pre-oxygenation using continuous positive airway pressure (CPAP) or non-invasive ventilation, high flow nasal oxygen, or a combination of these; (iv) a modified rapid sequence induction with continuous peroxygenation; (v) optimising laryngoscopy and intubation with early videolaryngoscopy by a trained operator; (vi) airway rescue with an amalgamated Plan B/C, borrowing from the Vortex approach; (vii) use of second generation supraglottic airways (SGAs); (viii) priming for front of neck airway (FONA) and (ix) a scalpel-bougie-tube cricothyroidotomy when managing cannot intubate, cannot oxygenate (CICO).
While medical nutrition therapy is an essential part of the care for critically ill patients, uncertainty exists about the right form, dosage, timing and route in relation to the phases of critical illness. As enteral nutrition (EN) is often withheld or interrupted during the intensive care unit (ICU) stay, combined EN and parenteral nutrition (PN) may represent an effective and safe option to achieve energy and protein goals as recommended by international guidelines. We hypothesise that critically ill patients at high nutritional risk may benefit from such a combined approach during their stay on the ICU. Therefore, we aim to test if an early combination of EN and high-protein PN (EN+PN) is effective in reaching energy and protein goals in patients at high nutritional risk, while avoiding overfeeding. This approach will be tested in the here-presented EFFORTcombo trial. Nutritionally high-risk ICU patients will be randomised to either high (≥2·2 g/kg per d) or low protein (≤1·2 g/kg per d). In the high protein group, the patients will receive EN+PN; in the low protein group, patients will be given EN alone. EN will be started in accordance with international guidelines in both groups. Efforts will be made to reach nutrition goals within 48–96 h. The efficacy of the proposed nutritional strategy will be tested as an innovative approach by functional outcomes at ICU and hospital discharge, as well as at a 6-month follow-up.
Enteral sildenafil may be used in the intensive care unit for treatment of pulmonary arterial hypertension. We aimed to determine if initial enteral sildenafil dosing is safe in children receiving concurrent vasoactive infusions.
Methods:
We performed a single-centre retrospective chart review that included patients less than 2 years of age in paediatric and cardiovascular intensive care units at an academic medical centre from 1 January, 2010 to 30 November, 2016. Included patients received concomitant enteral sildenafil and a continuously infused vasoactive agent. Exclusion criteria consisted of mechanical circulatory support, any form of dialysis, or a suspicion of septic shock at the time of sildenafil initiation. We sought to identify patients who developed worsening hemodynamic instability after initiation of enteral sildenafil defined as one or more of the following observations within 24 hours of sildenafil initiation: sildenafil discontinuation, total fluid bolus receipt >10 ml/kg, increased vasoactive support, epinephrine intravenous push administration, and/or the initiation of mechanical circulatory support.
Results:
Worsening hemodynamic instability was identified in 35% of the 130-patient cohort. Patients younger than 4 months were at increased risk of further hemodynamic instability compared with older patients (56% versus 44%, p = 0.0003) despite receiving lower median doses (1.28 mg/kg/day versus 1.78 mg/kg/day, p = 0.01).
Conclusions:
Critically ill children receiving vasoactive infusions may be at increased risk for further hemodynamic instability after initiation of enteral sildenafil, particularly in younger patients. This population may benefit from lower starting enteral sildenafil doses of 0.25 mg/kg/dose or less every 8 hours to avoid further hemodynamic compromise.