Life-sustaining Therapy Research Articles

Critical Care Decisions After Large Core Cerebral Infarctions: A Secondary Analysis From the SELECT2 Trial.

Among patients with large vessel occlusion (LVO) and large ischemic cores, critical decisions often need to be made about decompressive hemicraniectomy (DHC) or early withdrawal of life-sustaining therapy (WLST). In this study, we aimed to evaluate utilization of DHC and early WLST and factors associated with them in patients with large strokes from the SELECT2 trial. We analyzed the entire SELECT2 trial population, which randomized 352 patients with stroke due to LVO and large ischemic cores to endovascular thrombectomy (EVT) or medical management. We used the as-treated principle to compare the use of DHC and early WLST within 7 days after randomization. We further assessed functional outcomes (modified Rankin Score) after these decisions. Of 352 patients enrolled in this study, 55 received DHC and 81 transitioned to early WLST. Patients treated with EVT were as likely to undergo DHC (16% vs 15%, adjusted relative risk [aRR] = 1.19, 95% CI:0.75-1.88, p = 0.46) or WLST (22% vs 24%, aRR = 0.94, 95% CI: 0.66-1.34, p = 0.72) as those given medical management. DHC was used more frequently in younger patients and WLST more in older patients. EVT efficacy was maintained after adjusting for DHC (adjusted generalized odds ratio [aGenOR] = 1.68, 95% CI: 1.24-2.11, p < 0.001), with no interaction between DHC and treatment (p-interaction = 0.93). At 1 year, 21% of DHC-treated patients were ambulatory; the outcomes were universally poor after early WLST. In the SELECT2 trial of patients with large ischemic core, DHC was performed in ~1 of 6 patients and early WLST in ~1 of 5 patients, without differences based on treatment with EVT or medical management, nor successful reperfusion. DHC or WLST did not detract from thrombectomy treatment benefit. Additionally, ~20% of patients achieved independent ambulation despite receiving DHC by the 1-year follow-up. The similar distribution of these critical care decisions provides reassurance that the overall trial outcomes were not biased by open-label treatment allocation. ANN NEUROL 2024.

Predictors of End-of-Life Care in Nonelderly Adults With Severe Traumatic Brain Injury

IntroductionOlder age is a well-established risk factor for withdrawal of life-sustaining therapy (WDLST) and discharge to hospice (DH) in traumatic brain injury (TBI). However, a paucity of data exists in identifying factors associated with end-of-life (EoL) care in younger patients with TBI. We sought to identify hospital and patient factors associated with EoL care and timing of EoL care in younger adults with severe TBI. MethodsThis is a retrospective analysis of the National Trauma Databank (2019). Adults (18-65 y) with severe TBI (GCS<9) were included in the analysis. Inclusion criteria included death, WDLST, or DH during the hospital stay. Exclusion criteria included GCS>8, death in the emergency department, and missing WDLST status. The primary outcome was EoL Care defined as those who either underwent WDLST or DH. The secondary outcome was early EoL care defined as EoL care within 72 h of admission. ResultsA total of 1239 patients were included in the study, the median age was 43 y, and the majority were males (77%) and of white race (68%). A total of 667 (54%) patients underwent EoL Care. On multivariable analysis, increasing age (aOR: 1.02; 95% CI: 1.01-1.03) and chronic alcoholism (OR: 1.78; 95% CI: 1.05-3.03) were independently associated with EoL. Conversely, patients of Black race (aOR: 0.33; 95% CI: 0.22-0.49) and those admitted to university hospitals (OR 0.51 95% CI 0.33-0.74) and level II trauma centers (OR 0.57; 95% CI 0.37-0.88) were less likely to undergo EoL care. A total of 225 (34%) patients underwent early EoL Care. On multivariable analysis, presence of nonreactive pupils and absence of intracranial pressure monitor were independently associated with early EoL care. ConclusionsSignificant variation in EoL care exists in patients presenting with severe TBI. Better understanding of patient and hospital factors that influence these complex decisions may allow for targeted interventions to reduce variability in EoL practice in TBI across institutions.

Quality of Life as a Non-mortality Patient-centred Outcome in the Critically Ill: A Retrospective Analysis.

Mortality is a common gauged endpoint in critically ill patients. Reduced quality of life is an aligned repercussion of protracted critical illness. Baseline status, severity of illness and its trajectory influence the outcomes. Patient-oriented outcomes are those that matter the most to a patient. However, quite often, family approves of trade-offs with survivorship in the Indian context. We looked at non-mortality outcomes in patients on high-intensity life-sustaining interventions admitted to the intensive care unit (ICU) despite poor prognosis and died on full support or survived to be completely dependent. In this retrospective chart review study, we studied patients (1) who spent more than 1 month in the hospital enduring a myriad of distressing physical and psychological vicissitudes, (2) whose primary illness was fairly advanced (3) and either succumbed or survived to be impeded in their response to cognitive assessment and with severe functional impairment. Patient demographics, comorbidities, pre-morbid functional status, burden of critical illness, use of life-sustaining therapies, functional dependence in the last week of ICU stay, best neurological status in the last week pre-death or discharge, dying trajectories and economic analysis were noted. Trends of clinical progress of 23 patients were deliberated. The mean age of males was 65 years and 61 years for females. Five patients had a Barthel index score of 10-20, indicating total dependency and two patients had a score of 21-60, indicating severe dependency. Two patients were cognitively impaired at baseline. The worst neurological status in the week before death or discharge was eye1, motor1, and verbaltracheostomised. Thirteen patients succumbed during ongoing treatment. Daily discussions on the dynamics of illness progression need to take place with family on a regular basis for patients managed in ICU. Realistic perceptions and grounded expectations from the families and caregivers are necessary for patient-centred outcomes.

Abstract Su701: The Influence of Public Assistance Among Patients Who Received Extracorporeal Cardiopulmonary Resuscitation after Cardiac Arrest in Japan

Background: This study aimed to evaluate the influence of public assistance on patients with out-of-hospital cardiac arrest (OHCA) who received extracorporeal cardiopulmonary resuscitation (ECPR) in Japan. Methods: We conducted a secondary analysis of data from the SAVE-J II study, a retrospective, multicenter registry study involving 36 participating institutions in Japan. Patients with cardiac arrest who received ECPR were divided into two groups depending on whether or not they had received public assistance. The primary outcome was 30-day survival. Secondary outcomes were as follows: 30-day favorable neurological outcomes (cerebral performance category scores 1-2); survival at discharge; favorable neurological outcome at discharge; number of intensive care unit, hospital, ventilator, and extracorporeal membrane oxygenation days; medical expenses; proportion of percutaneous coronary intervention; target temperature management; mechanical circulatory support (MCS) device use; and withdrawal of life-sustaining therapy. Results: Of 2,157 patients registered in the SAVE-J II study, 1,885 patients were enrolled in this study; 99 patients (5.3%) received public assistance and 1,786 patients (94.7%) did not. Multivariable logistic regression analysis did not show a significant difference in 30-day survival (OR 1.22, 95% CI 0.77-1.95, p=0.40). The log-rank test for the Kaplan-Meiercurve on 30-day survival did not demonstrate a significant difference (p=0.46). Except for the use of MCS devices, there were no significant differences in secondary outcomes. Conclusions: The use of public assistance did not influence the prognoses of OHCA patients receiving ECPR. Treatment option during hospitalization may be affected by the use of public assistance.

Decisions about the limitations of life-sustaining treatment for acutely admitted older patients: a retrospective study of a Danish patient cohort.

Life-sustaining therapy, including heart and lung resuscitation and transfer to the intensive care department, is demanding for patients and relatives and utilizes large amounts of healthcare resources. For older patients acutely admitted to the hospital, very sparse data exist on decision making about life-sustaining therapy. Retrospective data were extracted from patients ≥ 70 years old who were acutely admitted to the hospital. Age, sex, clinical frailty scale score and Charlson comorbidity index were manually extracted from patients' files. Furthermore, data about life-sustaining treatment decisions were extracted. This was further divided into decisions documented within 24h from admission or during the hospital stay. Data were extracted for 200 patients with a median age of 80 years. Patients had a Charlson Comorbidity Index of 6 (5-8 IQR) and a Clinical Frailty Scale (CFS) score of 5 (3-6 IQR). During the first 24h, 61 patients (30.5%) had a written decision about heart and cardiopulmonary resuscitation (CPR), and 52 patients (26%) had written information about intensive care therapy. A total of 93 patients (46.5%) had a written decision about cardiopulmonary resuscitation (CPR), intensive care therapy or both during their hospital stay. With increasing Charlson Comorbidity Index and Clinical Frailty Scale scores, more patients had decisions about limitations in therapy documented in their files. Within the first 24h, 30.5% of the patients had a written decision about cardiopulmonary resuscitation (CPR), and 26% had written information about intensive care therapy. These numbers increased to 46.5% of patients who had a decision made during their hospital stay whether they were candidates for either cardiopulmonary resuscitation (CPR), intensive care therapy or both. These data suggest that further work should be done to determine the limitations of therapy early on the admission for all older frail acutely admitted patients.

Bioethics at the bedside: considering the adolescent voice in withdrawal of life-sustaining therapy.

Durable mechanical circulatory devices are commonly used to support children and adolescents in end-stage heart failure. However, these patients remain at high risk of acute medical complications, which may lead to significant impairment in functional capacity, altered quality of life, or death. We explore the incorporation of adolescent directives into medical decision-making in this scenario through a clinical case vignette.

Tensions between end-of-life care and organ donation in controlled donation after circulatory death: ICU healthcare professionals experiences

BackgroundThe development of controlled donation after circulatory death (cDCD) is both important and challenging. The tension between end-of-life care and organ donation raises significant ethical issues for healthcare professionals in the intensive care unit (ICU). The aim of this prospective, multicenter, observational study is to better understand ICU physicians’ and nurses’ experiences with cDCD.MethodsIn 32 ICUs in France, ICU physicians and nurses were invited to complete a questionnaire after the death of end-of-life ICU patients identified as potential cDCD donors who had either experienced the withdrawal of life-sustaining therapies alone or with planned organ donation (OD(-) and OD( +) groups). The primary objective was to assess their anxiety (State Anxiety Inventory STAI Y-A) following the death of a potential cDCD donor. Secondary objectives were to explore potential tensions experienced between end-of-life care and organ donation.ResultsTwo hundred six ICU healthcare professionals (79 physicians and 127 nurses) were included in the course of 79 potential cDCD donor situations. STAI Y-A did not differ between the OD(-) and OD( +) groups for either physicians or nurses (STAI Y-A were 34 (27–38) in OD(-) vs. 32 (27–40) in OD( +), p = 0.911, for physicians and 32 (25–37) in OD(-) vs. 39 (26–37) in OD( +), p = 0.875, for nurses). The possibility of organ donation was a factor influencing the WLST decision for nurses only, and a factor influencing the WLST implementation for both nurses and physicians. cDCD experience is perceived positively by ICU healthcare professionals overall.ConclusionscDCD does not increase anxiety in ICU healthcare professionals compared to other situations of WLST. WLST and cDCD procedures could further be improved by supporting professionals in making their intentions clear between end-of-life support and the success of organ donation, and when needed, by enhancing communication between ICU physician and nurses.Trial registrationThis research was registered in ClinicalTrials.gov (Identifier: NCT05041023, September 10, 2021).

Connect or detach: A transformative experience for medical students in end-of-life care.

At the beginning of clinical practice, medical students face complex end-of-life (EoL) decisions, such as limiting life-sustaining therapies, which may precipitate emotionally charged moral dilemmas. Previous research shows these dilemmas may cause identity dissonance and impact students' personal and professional development. Despite the prevalence of such dilemmas, medical educators have limited insight into how students navigate these often emotional experiences. This study explores how medical students make sense of and deal with moral dilemmas lived during EoL's care. This cross-sectional qualitative study used thematic analysis (Braun and Clarke) to analyse interviews with 11 Brazilian final-year medical students. The interviews followed the drawing of a rich picture representing moral dilemmas experienced by medical students when engaging with EoL care. The reporting of this study follows the Standards for Reporting Qualitative Research (SRQR). Participants highlighted four main themes when engaging with EoL care: 'experiencing death', 'making decisions at the end-of-life', 'connecting versus detaching: an upsetting dilemma' and 'being transformed'. They described the emotional overwhelm of experiencing death and the uncertainty in navigating EoL decisions. The central moral dilemma faced was whether to connect with or detach from patients. This dilemma was lived in the context of a hidden curriculum that preaches emotional distancing as a coping mechanism. Developing the moral courage to overcome this barrier and choosing to connect became a transformative experience, significantly impacting their personal and professional development and reinforcing their commitment to patient-centred care. Connecting with patients in EoL care involves breaking cultural norms to establish meaningful connections with patients aiming for compassionate care. This process may lead to identity dissonance and also represents an opportunity for transformative learning. Educators can support this transformative process by legitimating students' connections with patients, teaching emotional regulation strategies, and leveraging personal experiences to foster trust.

Recent advances in the understanding of the peritoneal membrane.

The efficiency of peritoneal dialysis (PD) as a life-sustaining replacement therapy for patients with kidney failure relies on the integrity and function of the peritoneal membrane. Here, we review the most recent advances in the understanding of the peritoneal membrane and its role in PD. A recent update of the ISPD guidelines proposed a revised definition of membrane dysfunction, emphasizing the importance of fluid balance in patients treated with PD and identified three main mechanisms leading to insufficient peritoneal ultrafiltration (UF). The Bio-PD study, the first genomewide association study in PD, demonstrated that 20% of the interindividual variability in the peritoneal solute transfer rate is genetically determined, and identified several loci of potential relevance for peritoneal transport. A candidate-gene approach identified and characterized a common and functional variant in the promoter of the AQP1 gene associated with water transport and clinical outcomes in PD. Innovative strategies to preserve the integrity of the peritoneal membrane and to enhance UF are also discussed, including the use of gliflozins; steady glucose concentration PD; modulation of GLUT proteins; and cytoprotective additives. A comprehensive understanding of the peritoneal membrane and of the mechanisms driving UF may help individualizing PD prescription and improving outcomes in patients treated with PD.

Criteria for indication of initiation or discontinuation of life-sustaining therapy

Most of the ethical problems involved in life-support therapy may stem from a different understanding of authority in health care and a non-univocal interpretation of the principle of proportionality. Particularly in Anglo-Saxon circles, the theory is established that authority in medical care lies exclusively with patients or their legal representatives.

Withdrawal/Withholding of Life-Sustaining Therapies: Limitation of Therapeutic Effort in the Intensive Care Unit.

Background/Objectives: The change in critically ill patients makes limitation of therapeutic effort (LTE) a widespread practice when therapeutic goals cannot be achieved. We aimed to describe the application of LTE in a post-surgical Intensive Care Unit (ICU), analyze the measures used, the characteristics of the patients, and their evolution. Methods: Retrospective observational study, including all patients to whom LTE was applied in a postsurgical ICU between January 2021 and December 2022. The LTE defined were brain death, withdrawal of measures, and withholding. Withholding limitations included orders for no cardiopulmonary resuscitation, no orotracheal intubation, no reintubation, no tracheostomy, no renal replacement therapies, and no vasoactive support. Patient and ICU admission data were related to the applied LTE. Results: Of the 2056 admitted, LTE protocols were applied to 106 patients. The prevalence of LTE in the ICU was 5.1%. Data were analyzed in 80 patients. A total of 91.2% of patients had been admitted in an emergency situation, and 56.2% had been admitted after surgery. The most widespread limitation was treatment withholding (83.8%) compared to withdrawal (13.8%). No differences were found regarding who made the decision and the type of limitation employed. However, patients with the limitation of no intubation had a longer stay (p = 0.025). Additionally, the order of not starting or increasing vasopressor support resulted in a longer hospital stay (p = 0.007) and a significantly longer stay until death (p = 0.044). Conclusions: LTE is a frequent measure in critically ill patient management and is less common in the postoperative setting. The most widespread measure was withholding, with the do-not-resuscitate order being the most common. The decision was made mainly by the medical team and the family, respecting the wishes of the patients. A joint patient-centered approach should be made in these decisions to avoid futile treatment and ensure end-of-life comfort.

Covert Consciousness in the ICU.

For critically ill patients with acute severe brain injuries, consciousness may reemerge before behavioral responsiveness. The phenomenon of covert consciousness (i.e., cognitive motor dissociation) may be detected by advanced neurotechnologies such as task-based functional MRI (fMRI) and electroencephalography (EEG) in patients who appear unresponsive on the bedside behavioral examination. In this narrative review, we summarize the state-of-the-science in ICU detection of covert consciousness. Further, we consider the prognostic and therapeutic implications of diagnosing covert consciousness in the ICU, as well as its potential to inform discussions about continuation of life-sustaining therapy for patients with severe brain injuries. We reviewed salient medical literature regarding covert consciousness. We included clinical studies investigating the diagnostic performance characteristics and prognostic utility of advanced neurotechnologies such as task-based fMRI and EEG. We focus on clinical guidelines, professional society scientific statements, and neuroethical analyses pertaining to the implementation of advanced neurotechnologies in the ICU to detect covert consciousness. We extracted study results, guideline recommendations, and society scientific statement recommendations regarding the diagnostic, prognostic, and therapeutic relevance of covert consciousness to the clinical care of ICU patients with severe brain injuries. Emerging evidence indicates that covert consciousness is present in approximately 15-20% of ICU patients who appear unresponsive on behavioral examination. Covert consciousness may be detected in patients with traumatic and nontraumatic brain injuries, including patients whose behavioral examination suggests a comatose state. The presence of covert consciousness in the ICU may predict the pace and extent of long-term functional recovery. Professional society guidelines now recommend assessment of covert consciousness using task-based fMRI and EEG. However, the clinical criteria for patient selection for such investigations are uncertain and global access to advanced neurotechnologies is limited.

Characterizing the Use of Time-Limited Trials in Patients With Acute Respiratory Failure: A Prospective, Single-Center Observational Study.

A time-limited trial (TLT) is a collaborative plan among clinicians, patients, and families to use life-sustaining therapy for a defined duration, after which the patient's response informs whether to continue care directed toward recovery or shift the focus toward comfort. TLTs are a promising approach to help navigate uncertainty in critical illness, yet little is known about their current use. To characterize TLT use in patients with acute respiratory failure (ARF). Prospective 12-month observational cohort study at an U.S. academic medical center of adult ICU patients with ARF receiving invasive mechanical ventilation for greater than or equal to 48 hours. Primary exposure was TLT participation, identified by patients' ICU physician. Patient characteristics, care delivery elements, and hospital outcomes were extracted from the electronic medical record. Among 176 eligible patients, 36 (20.5%) participated in a TLT. Among 18 ICU attending physicians, nine (50%) participated in greater than or equal to 1 TLT (frequency 0-39% of patients cared for). Median TLT duration was 3.0 days (interquartile range [IQR], 3.0-4.5 d). TLT patients had a higher mean age (67.4 yr [sd, 12.0 yr] vs. 60.0 yr [sd, 16.0 yr]; p < 0.01), higher Charlson Comorbidity Index (5.1 [sd, 2.2] vs. 3.8 [sd, 2.6]; p < 0.01), and similar Sequential Organ Failure Assessment score (9.6 [sd, 3.3] vs. 9.5 [sd, 3.7]; p = 0.93), compared with non-TLT patients. TLT patients were more likely to die or be discharged to hospice (80.6% vs. 42.1%; p < 0.05) and had shorter ICU length of stay (median, 5.7 d [IQR, 4.0-9.0 d] vs. 10.3 d [IQR, 5.5-14.5 d]; p < 0.01). In this study, approximately one in five patients with ARF participated in a TLT. Our findings suggest TLTs are used primarily in patients near end of life but with substantial physician variation, highlighting a need for evidence to guide optimal use.

Variations in neonatal mortality of preterm infants with intraparenchymal haemorrhage in Europe: the EPICE cohort

ObjectiveThe aim of this study was to investigate variations in mortality before neonatal intensive care unit (NICU) discharge of infants born preterm with intraparenchymal haemorrhage (IPH) in Europe with a...

Race and Socio-Economic Status Impact Withdrawal of Treatment in Young Traumatic Brain Injury

ContextWithdrawal of life-sustaining therapies (WDLST) in young individuals with traumatic brain injury (TBI) is an overwhelming situation often made more stressful by socioeconomic factors that shape health outcomes. Identifying these factors is crucial to developing equitable and goal-concordant care for patients and families. ObjectivesWe aimed to identify predictors of WDLST in young patients with 1-TBI. We hypothesized uninsured payment method, race, and co-morbid status are associated with WDLST. MethodsWe queried the 2021 Trauma Quality Improvement Program database for patients <45 years with TBI. Patients with WDLST were compared to patients without WDLST. Multivariable logistic regression (MLR) was performed. Results61,115 patients were included, of whom 2,487 (4.1%) underwent WDLST. Patients in the WDLST cohort were older (29 vs 27, P<0.001), more likely to suffer from a penetrating mechanism (29% vs 11%, P<.0001), and have uninsured (22% vs 18%) or other payment method (5% vs 3%) when compared to the non-WDLST cohort. MLR identified age (AOR:1.019, 95% CI 1.014–1.024, P<.0001), non-Hispanic ethnicity (AOR:1.590, 95% CI 1.373–1.841, P<.0001), penetrating mechanism (AOR:3.075, 95% CI 2.727–3.467, P<.0001), systolic blood pressure (AOR: 0.992, 95% CI 0.990–0.993, P<0.0001), advanced directive (AOR:4.987, 95% CI 2.823–8.812, P<.0001), cirrhosis (AOR:3.854, 95% CI 2.641–5.625, P<.0001), disseminated cancer (AOR:6.595, 95% CI 2.370–18.357, P=0.0003), and interfacility transfer (AOR:1.457, 95% CI 1.295–1.640, P<0.0001) as factors associated with WDLST. Black patients were less likely to undergo WDLST when compared to white patients (AOR:0.687, 95% CI 0.603–0.782, P<.0001). ConclusionThe decision for WDLST in young patients with severe TBI may be influenced by cultural and socioeconomic factors in addition to clinical considerations.

APRICOT-Mamba: Acuity Prediction in Intensive Care Unit (ICU): Development and Validation of a Stability, Transitions, and Life-Sustaining Therapies Prediction Model.

On average, more than 5 million patients are admitted to intensive care units (ICUs) in the US, with mortality rates ranging from 10 to 29%. The acuity state of patients in the ICU can quickly change from stable to unstable, sometimes leading to life-threatening conditions. Early detection of deteriorating conditions can assist in more timely interventions and improved survival rates. While Artificial Intelligence (AI)-based models show potential for assessing acuity in a more granular and automated manner, they typically use mortality as a proxy of acuity in the ICU. Furthermore, these methods do not determine the acuity state of a patient (i.e., stable or unstable), the transition between acuity states, or the need for life-sustaining therapies. In this study, we propose APRICOT-M (Acuity Prediction in Intensive Care Unit-Mamba), a 1M-parameter state space-based neural network to predict acuity state, transitions, and the need for life-sustaining therapies in real-time among ICU patients. The model integrates ICU data in the preceding four hours (including vital signs, laboratory results, assessment scores, and medications) and patient characteristics (age, sex, race, and comorbidities) to predict the acuity outcomes in the next four hours. Our state space-based model can process sparse and irregularly sampled data without manual imputation, thus reducing the noise in input data and increasing inference speed. The model was trained on data from 107,473 patients (142,062 ICU admissions) from 55 hospitals between 2014-2017 and validated externally on data from 74,901 patients (101,356 ICU admissions) from 143 hospitals. Additionally, it was validated temporally on data from 12,927 patients (15,940 ICU admissions) from one hospital in 2018-2019 and prospectively on data from 215 patients (369 ICU admissions) from one hospital in 2021-2023. Three datasets were used for training and evaluation: the University of Florida Health (UFH) dataset, the electronic ICU Collaborative Research Database (eICU), and the Medical Information Mart for Intensive Care (MIMIC)-IV dataset. APRICOT-M significantly outperforms the baseline acuity assessment, Sequential Organ Failure Assessment (SOFA), for mortality prediction in both external (AUROC 0.95 CI: 0.94-0.95 compared to 0.78 CI: 0.78-0.79) and prospective (AUROC 0.99 CI: 0.97-1.00 compared to 0.80 CI: 0.65-0.92) cohorts, as well as for instability prediction (external AUROC 0.75 CI: 0.74-0.75 compared to 0.51 CI: 0.51-0.51, and prospective AUROC 0.69 CI: 0.64-0.74 compared to 0.53 CI: 0.50-0.57). This tool has the potential to help clinicians make timely interventions by predicting the transition between acuity states and decision-making on life-sustaining within the next four hours in the ICU.

Automated Measurement of Cerebral Hemorrhagic Contusions and Outcomes After Traumatic Brain Injury in the TRACK-TBI Study

Because withdrawal of life-sustaining therapy based on perceived poor prognosis is the most common cause of death after moderate or severe traumatic brain injury (TBI), the accuracy of clinical prognoses is directly associated with mortality. Although the location of brain injury is known to be important for determining recovery potential after TBI, the best available prognostic models, such as the International Mission for Prognosis and Analysis of Clinical Trials in TBI (IMPACT) score, do not currently incorporate brain injury location. To test whether automated measurement of cerebral hemorrhagic contusion size and location is associated with improved prognostic performance of the IMPACT score. This prognostic cohort study was performed in 18 US level 1 trauma centers between February 26, 2014, and August 8, 2018. Adult participants aged 17 years or older from the US-based Transforming Research and Clinical Knowledge in TBI (TRACK-TBI) study with moderate or severe TBI (Glasgow Coma Scale score 3-12) and contusions detected on brain computed tomography (CT) scans were included. The data analysis was performed between January 2023 and February 2024. Labeled contusions detected on CT scans using Brain Lesion Analysis and Segmentation Tool for Computed Tomography (BLAST-CT), a validated artificial intelligence algorithm. The primary outcome was a Glasgow Outcome Scale-Extended (GOSE) score of 4 or less at 6 months after injury. Whether frontal or temporal lobe contusion volumes improved the performance of the IMPACT score was tested using logistic regression and area under the receiver operating characteristic curve comparisons. Sparse canonical correlation analysis was used to generate a disability heat map to visualize the strongest brainwide associations with outcomes. The cohort included 291 patients with moderate or severe TBI and contusions (mean [SD] age, 42 [18] years; 221 [76%] male; median [IQR] emergency department arrival Glasgow Coma Scale score, 5 [3-10]). Only temporal contusion volumes improved the discrimination of the IMPACT score (area under the receiver operating characteristic curve, 0.86 vs 0.84; P = .03). The data-derived disability heat map of contusion locations showed that the strongest association with unfavorable outcomes was within the bilateral temporal and medial frontal lobes. These findings suggest that CT-based automated contusion measurement may be an immediately translatable strategy for improving TBI prognostic models.

Insurance Type and Withdrawal of Life-Sustaining Therapy in Critically Injured Trauma Patients

Withdrawal of life-sustaining therapy (WLST) decisions for critically injured trauma patients are complicated and multifactorial, with potential for patients' insurance status to affect decision-making. To determine if patient insurance type (private insurance, Medicaid, and uninsured) is associated with time to WLST in critically injured adults cared for at US trauma centers. This retrospective registry-based cohort study included reported data from level I and level II trauma centers in the US that participated in the American College of Surgeons Trauma Quality Improvement Program (TQIP) registry. Participants included adult trauma patients who were injured between January 1, 2017, and December 31, 2020, and required an intensive care unit stay. Patients were excluded if they died on arrival or in the emergency department or had a preexisting do not resuscitate directive. Analyses were performed on December 12, 2023. Insurance type (private insurance, Medicaid, uninsured). An adjusted time-to-event analysis for association between insurance status and time to WLST was performed, with analyses accounting for clustering by hospital. This study included 307 731 patients, of whom 160 809 (52.3%) had private insurance, 88 233 (28.6%) had Medicaid, and 58 689 (19.1%) were uninsured. The mean (SD) age was 40.2 (14.1) years, 232 994 (75.7%) were male, 59 551 (19.4%) were African American or Black patients, and 201 012 (65.3%) were White patients. In total, 12 962 patients (4.2%) underwent WLST during their admission. Patients who are uninsured were significantly more likely to undergo earlier WLST compared with those with private insurance (HR, 1.54; 95% CI, 1.46-1.62) and Medicaid (HR, 1.47; 95% CI, 1.39-1.55). This finding was robust to sensitivity analysis excluding patients who died within 48 hours of presentation and after accounting for nonwithdrawal death as a competing risk. In this cohort study of US adult trauma patients who were critically injured, patients who were uninsured underwent earlier WLST compared with those with private or Medicaid insurance. Based on our findings, patient's ability to pay was may be associated with a shift in decision-making for WLST, suggesting the influence of socioeconomics on patient outcomes.

Estimation of antioxidant enzymes in hemodialysis patients

Background Oxidative stress in hemodialysis (HD) is a critical concern in the management of patients. HD, a life-sustaining renal replacement therapy, exposes individuals to various factors that promote the production of harmful reactive oxygen species within the body. These reactive oxygen species, including free radicals, can overwhelm the body’s antioxidant defenses, leading to oxidative stress. Objective This study aimed to evaluate the activities of superoxide dismutase (SOD), glutathione peroxides (GPx) and catalase (CAT), and serum malondialdehyde (MDA) levels with dyslipidemia in HD patients and compare them with control groups. Patients and methods The case–control study was conducted on 75 patients undergoing HD and 75 age-matched healthy controls. Oxidative stress markers include CAT, SOD, GPx, and MDA. Serum electrolytes including potassium ion (K+), phosphate (PO4), calcium (Ca+), urea, and creatinine (Cr) were measured for each group. Results Our results show a significant difference between patients and the control group in each of the oxidative stress markers, which are CAT, GPx, and SOD, showing a decrease that is statistically significant in patients in comparison to the controls. The level of MDA shows an increase that is statistically significant in patients in comparison to the controls. Serum electrolyte levels, which are K+, PO4, urea, and Cr, show a statistically significant increase in patients in comparison to the controls. Ca+ shows a decrease that is statistically significant in patients in comparison to the controls. Conclusions From the results, we could conclude that oxidative stress plays a role in HD patients and can affect the management of end-stage renal failure patients.

Clinical Factors Associated With Mode of Death Following Cardiac Arrest

Background Death after resuscitation from cardiac arrest is common. Although associated factors have been identified, knowledge about their relationship with specific modes of death is limited. Objective To identify clinical factors associated with specific modes of death following cardiac arrest. Methods This study involved a retrospective medical record review of patients admitted to a single health care center from January 2015 to March 2020 after resuscitation from cardiac arrest who died during their index hospitalization. Mode of death was categorized as either brain death, withdrawal of life-sustaining therapies due to neurologic causes, death due to medical causes, or withdrawal of life-sustaining therapies due to patient preference. Clinical characteristics across modes of death were compared. Results The analysis included 731 patients. Death due to medical causes was the most common mode of death. Compared with the other groups of patients, those with brain death were younger, had fewer comorbidities, were more likely to have experienced unwitnessed and longer cardiac arrest, and had more severe acidosis and hyperglycemia on presentation. Patients who died owing to medical causes or withdrawal of life-sustaining therapies due to patient preference were older and had more comorbidities, fewer unfavorable cardiac arrest characteristics, and fewer days between cardiac arrest and death. Conclusions Significant associations were found between several clinical characteristics and specific mode of death following cardiac arrest. Decision-making regarding withdrawal of care after resuscitation from cardiac arrest should be based on a multimodal approach that takes account of a variety of personal and clinical factors.