Publications

2025

Lau, Winnie K, Corey R Fehnel, Zachary A Macchi, Ambereen K Mehta, Manon Auffret, Jori F Bogetz, Jori E Fleisher, et al. (2025) 2025. “Research Priorities in Neuropalliative Care: A Consensus Statement From the International Neuropalliative Care Society.”. JAMA Neurology 82 (3): 295-302. https://doi.org/10.1001/jamaneurol.2024.4932.

IMPORTANCE: The integration of palliative care in neurology, or neuropalliative care, is an emerging area of practice focused on holistically improving quality of life and reducing the burden of suffering for people living with serious neurologic disease and their care partners. Major neurology and palliative care societies have recognized the need to advance primary and specialty palliative care services for people with neurologic disease. However, research to support this work is in its early stages.

OBSERVATIONS: The International Neuropalliative Care Society Research Committee convened an interdisciplinary panel of experts, including clinicians, scientists, people with neurologic disease, and care partners, to identify priority research areas for the advancement of neuropalliative care as a field. Three priority areas highlighted in this review include (1) patient- and care partner-centered symptoms and outcomes specific to neurologic illness and tools for their assessment, (2) development of effective neuropalliative care interventions and delivery models, and (3) methods to support the ability to foster, deliver, and measure goal-concordant care over time.

CONCLUSIONS AND RELEVANCE: This Special Communication outlines some of the most pressing neuropalliative care research needs, the advancement of which will best serve patients of all ages living with serious neurologic diseases and their care partners. Research funding mechanisms are needed to support and sustain impactful work in this field.

Hwang, David Y, Mira Reichman, Sarah M Bannon, Kate Meurer, Rina Kubota, Jisoo Kim, Nithyashri Baskaran, et al. (2025) 2025. “Psychosocial Support Needs and Preferences Among Family Caregivers of ICU Patients With Severe Acute Brain Injury: A Qualitative Thematic Analysis.”. Neurocritical Care. https://doi.org/10.1007/s12028-024-02202-z.

BACKGROUND: Family caregivers of patients with severe acute brain injury (SABI) are at risk for clinically significant chronic emotional distress, including depression, anxiety, and posttraumatic stress. Existing psychosocial interventions for caregivers of intensive care unit (ICU) patients are not tailored to the unique needs of caregivers of patients with SABI, do not demonstrate long-term efficacy, and may increase caregiver burden. In this study, we explored the needs and preferences for psychosocial services among SABI caregivers to inform the development and adaptation of interventions to reduce their emotional distress during and after their relative's ICU admission.

METHODS: In this multicenter longitudinal qualitative study, we conducted semistructed interviews with SABI caregivers at two time points: during their relative's ICU admission (n = 30) and 2 months later (n = 20). We analyzed qualitative data using a hybrid of inductive and deductive analytic techniques. We recruited family caregivers of patients with SABI from 14 US neuroscience ICUs. We conducted interviews over live video. Our convenience sample of SABI caregivers (n = 30) was recruited through referral by medical teams and nursing staffs across participating neuroscience ICUs. Caregivers included spouses, children, parents, and siblings to patients with SABI.

RESULTS: We identified themes and subthemes related to participants' preferences for (1) the content of psychosocial support services and (2) the delivery and implementation of psychosocial support services. Findings revealed an unmet need for psychosocial support around the time of ICU discharge and 2 months later, including information to understand their loved one's condition and guide difficult decision-making, education regarding how best to communicate with the patient's care team and other family members, and emotional and behavioral coping skills.

CONCLUSIONS: Our findings provide specific recommendations to justify and inform the development and adaptation of psychosocial support services for SABI caregivers for delivery in the ICU and after discharge.

2024

Das, Alvin S, John W Erdman, Elizabeth C Heistand, Vasileios-Arsenios Lioutas, Corey R Fehnel, Jason Yoon, Sandeep Kumar, et al. (2024) 2024. “Acute Hyperglycemia Is Associated With Intraventricular Extension Among Patients With Spontaneous Intracerebral Hemorrhage.”. Journal of the Neurological Sciences 467: 123320. https://doi.org/10.1016/j.jns.2024.123320.

OBJECTIVE: Acute hyperglycemia following intracerebral hemorrhage (ICH) is associated with poor functional outcomes and may result from a neuroendocrine stress response. Given the proximity of neuroendocrine structures to the cerebral ventricles, we tested the hypothesis that intraventricular hemorrhage (IVH) is associated with hyperglycemia.

MATERIALS AND METHODS: A post-hoc analysis of the ICH Deferoxamine (i-DEF) trial was conducted to determine predictors of IVH. Variables with significant differences (p < 0.1) in univariable tests between patients with and without IVH were entered into a logistic regression model along with age, sex, diabetes, hyperglycemia (admission glucose ≥140 mg/dL), and baseline intraparenchymal hemorrhage (IPH) volume. This model was then applied to an independent cohort of consecutive non-traumatic ICH patients admitted to a single referral center (2007 to 2018).

RESULTS: Among 294 patients in the i-DEF cohort with mean age 60 ± 12 years (IVH in 41 %), hyperglycemia (aOR 1.90, 95 % CI [1.06-3.38]), smoking history (aOR 1.90, 95 % CI [1.11-3.27]), and non-lobar ICH location (aOR 3.38, 95 % CI [1.49-7.69]) were independently associated with IVH. In the independent cohort consisting of 856 patients with mean age 71 ± 12 years (IVH in 37 %), hyperglycemia (aOR 2.23, 95 % CI [1.55-3.20]), non-lobar ICH location (aOR 2.50, 95 % CI [1.75-3.59]), and IPH volume (aOR 1.02, 95 % CI [1.01-1.02]) were associated with IVH.

CONCLUSIONS: Hyperglycemia is associated with IVH and may be a peripheral marker for the inflammatory response to hemorrhage within the ventricles. Further translational studies are needed to elucidate the pathophysiological basis for this phenomenon.

Hwang, David Y, Sarah M Bannon, Kate Meurer, Rina Kubota, Nithyashri Baskaran, Jisoo Kim, Qiang Zhang, et al. (2024) 2024. “Thematic Analysis of Psychosocial Stressors and Adaptive Coping Strategies Among Informal Caregivers of Patients Surviving ICU Admission for Coma.”. Neurocritical Care 40 (2): 674-88. https://doi.org/10.1007/s12028-023-01804-3.

BACKGROUND: Family caregivers of patients with severe acute brain injury (SABI) admitted to intensive care units (ICUs) with coma experience heightened emotional distress stemming from simultaneous stressors. Stress and coping frameworks can inform psychosocial intervention development by elucidating common challenges and ways of navigating such experiences but have yet to be employed with this population. The present study therefore sought to use a stress and coping framework to characterize the stressors and coping behaviors of family caregivers of patients with SABI hospitalized in ICUs and recovering after coma.

METHODS: Our qualitative study recruited a convenience sample from 14 US neuroscience ICUs. Participants were family caregivers of patients who were admitted with ischemic stroke, intracerebral hemorrhage, subarachnoid hemorrhage, traumatic brain injury, or hypoxic-ischemic encephalopathy; had experienced a comatose state for > 24 h; and completed or were scheduled for tracheostomy and/or gastrostomy tube placement. Participants were recruited < 7 days after transfer out of the neuroscience ICU. We conducted live online video interviews from May 2021 to January 2022. One semistructured interview per participant was recorded and subsequently transcribed. Recruitment was stopped when thematic saturation was reached. We deductively derived two domains using a stress and coping framework to guide thematic analysis. Within each domain, we inductively derived themes to comprehensively characterize caregivers' experiences.

RESULTS: We interviewed 30 caregivers. We identified 18 themes within the two theory-driven domains, including ten themes describing practical, social, and emotional stressors experienced by caregivers and eight themes describing the psychological and behavioral coping strategies that caregivers attempted to enact. Nearly all caregivers described using avoidance or distraction as an initial coping strategy to manage overwhelming emotions. Caregivers also expressed awareness of more adaptive strategies (e.g., cultivation of positive emotions, acceptance, self-education, and soliciting social and medical support) but had challenges employing them because of their heightened emotional distress.

CONCLUSIONS: In response to substantial stressors, family caregivers of patients with SABI attempted to enact various psychological and behavioral coping strategies. They described avoidance and distraction as less helpful than other coping strategies but had difficulty engaging in alternative strategies because of their emotional distress. These findings can directly inform the development of additional resources to mitigate the long-term impact of acute psychological distress among this caregiver population.

McGloin, Jamie M, Patrick Gordon, Baevin Feeser, Joanna Anderson, Suzanne Joyner, Jacqueline Bentick, Anna Morien, Corey R Fehnel, Michael N Cocchi, and Dana E Pepe. (2024) 2024. “Catheter-Associated Urinary Tract Infection (CAUTI) Reduction in a Neuroscience Intensive Care Unit: A Multidisciplinary Approach.”. American Journal of Infection Control 52 (3): 368-70. https://doi.org/10.1016/j.ajic.2023.11.016.

Utilizing a multidisciplinary approach to identify catheter-associated urinary tract infection (CAUTI) risks in Neuroscience intensive care patients admitted for aneurysmal subarachnoid hemorrhage, our CAUTI rate decreased from 5.903 per 1,000 catheter days (June 2020-June 2021) to 0.371 per 1,000 catheter days in our postintervention time period (July 2021-March 2023). A review of our clinical treatment guideline to optimize the timing of indwelling urinary catheters and medication management related to bowel regimens has resulted in a sustained CAUTI reduction, particularly in postaneurysmal subarachnoid hemorrhage patients in the Neuroscience intensive care unit.

Burke, Laura G, Corey R Fehnel, Ryan C Burke, Endel J Orav, Louis R Caplan, Jonathan Edlow, and Sandeep Kumar. (2024) 2024. “Frequency of Intubation for Medicare Beneficiaries With Acute Stroke and Association With Patient Outcomes.”. Neurology 102 (4): e208031. https://doi.org/10.1212/WNL.0000000000208031.

BACKGROUND AND OBJECTIVES: Intubation for acute stroke is common in the United States, with few established guidelines.

METHODS: This is a retrospective observational study of acute stroke admissions from 2011 to 2018 among fee-for-service Medicare beneficiaries aged 65-100 years. Patient demographics and chronic conditions as well as hospital characteristics were identified. We identified patient intubation, stroke subtype (ischemic vs intracerebral hemorrhage), and thrombectomy. Factors associated with intubation were identified by a linear probability model with intubation as the outcome and patient characteristics, stroke subtype, and thrombectomy as predictors, adjusting for within-hospital correlation. We compared hospital characteristics between adjusted intubation rate quartiles. We specified a linear probability model with 30-day mortality as the patient-level outcome and hospital intubation rate quartile as the categorical predictor, again adjusting for patient characteristics. We specified an analogous model for quartiles of hospital referral regions.

RESULTS: There were 800,467 stroke hospitalizations at 3,581 hospitals. Among 2,588 hospitals with 25 or more stroke hospitalizations, the median intubation rate was 4.8%, while a quarter had intubation rates below 2.4% and 10% had rates above 12.5%. Ischemic strokes had a 21% lower adjusted intubation risk than intracerebral hemorrhages (risk difference [RD] -21.1%, 95% CI -21.3% to -20.9%; p < 0.001), whereas thrombectomy was associated with a 19.2% higher adjusted risk (95% CI RD 18.8%-19.6%; p < 0.001). Women and older patients had lower intubation rates. Large, urban hospitals and academic medical centers were overrepresented in the top quartile of hospital adjusted intubation rates. Even after adjusting for available characteristics, intubated patients had a 44% higher mortality risk than non-intubated patients (p < 0.001). Hospitals in the highest intubation quartile had higher adjusted 30-day mortality (19.3%) than hospitals in the lowest quartile (16.7%), a finding that was similar when restricting to major teaching hospitals (22.3% vs 18.1% in the 4th vs 1st quartiles, respectively). There was no association between market quartile of intubation and patient 30-day mortality.

DISCUSSION: Intubation for acute stroke varied by patient and hospital characteristics. Hospitals with higher adjusted rates of intubation had higher patient-level 30-day mortality, but much of the difference may be due to unmeasured patient severity given that no such association was observed for health care markets.

Bryan, Ava Ferguson, Amanda J Reich, Andrea C Norton, Margaret L Campbell, Richard M Schwartzstein, Zara Cooper, Douglas B White, Susan L Mitchell, and Corey R Fehnel. (2024) 2024. “Process of Withdrawal of Mechanical Ventilation at End of Life in the ICU: Clinician Perceptions.”. CHEST Critical Care 2 (2). https://doi.org/10.1016/j.chstcc.2024.100051.

BACKGROUND: Nearly one-quarter of all Americans die in the ICU. Many of their deaths are anticipated and occur following the withdrawal of mechanical ventilation (WMV). However, there are few data on which to base best practices for interdisciplinary ICU teams to conduct WMV.

RESEARCH QUESTION: What are the perceptions of current WMV practices among ICU clinicians, and what are their opinions of processes that might improve the practice of WMV at end of life in the ICU?

STUDY DESIGN AND METHODS: This prospective two-center observational study conducted in Boston, Massachusetts, the Observational Study of the Withdrawal of Mechanical Ventilation (OBSERVE-WMV) was designed to better understand the perspectives of clinicians and experience of patients undergoing WMV. This report focuses on analyses of qualitative data obtained from in-person surveys administered to the ICU clinicians (nurses, respiratory therapists, and physicians) caring for these patients. Surveys assessed a broad range of clinician perspectives on planning, as well as the key processes required for WMV. This analysis used independent open, inductive coding of responses to open-ended questions. Initial codes were reconciled iteratively and then organized and interpreted using a thematic analysis approach. Opinions were assessed on how WMV could be improved for individual patients and the ICU as a whole.

RESULTS: Among 456 eligible clinicians, 312 in-person surveys were completed by clinicians caring for 152 patients who underwent WMV. Qualitative analyses identified two main themes characterizing high-quality WMV processes: (1) good communication (eg, mutual understanding of family preferences) between the ICU team and family; and (2) medical management (eg, planning, availability of ICU team) that minimizes patient distress. Team member support was identified as an essential process component in both themes.

INTERPRETATION: Clinician perceptions of the appropriateness or success of WMV prioritize the quality of team and family communication and patient symptom management. Both are modifiable targets of interventions aimed at optimizing overall WMV.

Simon, Mirela, V, Seward B Rutkove, Long Ngo, Corey R Fehnel, Alvin S Das, Todd Sarge, Somnath Bose, Magdy Selim, and Sandeep Kumar. (2024) 2024. “Understanding the Variability of the Electrophysiologic Laryngeal Adductor Reflex.”. Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology 162: 141-50. https://doi.org/10.1016/j.clinph.2024.03.019.

OBJECTIVE: The laryngeal adductor reflex (LAR) is vital for airway protection and can be electrophysiologically obtained under intravenous general anesthesia (IGA). This makes the electrophysiologic LAR (eLAR) an important tool for monitoring of the vagus nerves and relevant brainstem circuitry during high-risk surgeries. We investigated the intra-class variability of normal and expected abnormal eLAR.

METHODS: Repeated measures of contralateral R1 (cR1) were performed under IGA in 58 patients. Data on presence/absence of cR2 and potential confounders were also collected. Review of neuroimaging, pathology and clinical exam, allowed classification into normal and expected abnormal eLAR groups. Using univariate and multivariate analysis we studied the variability of cR1 parameters and their differences between the two groups.

RESULTS: In both groups, cR1 latencies had coefficients of variation of <2%. In the abnormal group, cR1 had longer latencies, required higher activation currents and was more frequently desynchronized and unsustained; cR2 was more frequently absent.

CONCLUSIONS: cR1 latencies show high analytical precision for measurements. Delayed onset, difficult to elicit, desynchronized and unsustained cR1, and absence of cR2 signal an abnormal eLAR.

SIGNIFICANCE: Understanding the variability and behavior of normal and abnormal eLAR under IGA can aid in the interpretation of its changes during monitoring.

Ramsburg, Hanna, Abigail G Fischer, Meredith MacKenzie Greenle, and Corey R Fehnel. (2024) 2024. “Care of the Patient Nearing the End of Life in the Neurointensive Care Unit.”. Neurocritical Care. https://doi.org/10.1007/s12028-024-02064-5.

BACKGROUND: Neurologically critically ill patients present with unique disease trajectories, prognostic uncertainties, and challenges to end-of-life (EOL) care. Acute brain injuries place these patients at risk for underrecognized symptoms and unmet EOL management needs, which can negatively affect their quality of care and lead to complicated grief in surviving loved ones. To care for patients nearing the EOL in the neurointensive care unit, health care clinicians must consider neuroanatomic localization, barriers to symptom assessment and management, unique aspects of the dying process, and EOL management needs.

AIM: We aim to define current best practices, barriers, and future directions for EOL care of the neurologically critically ill patient.