Mechanistic investigations of the Ni-catalyzed asymmetric reductive alkenylation of N-hydroxyphthalimide (NHP) esters and benzylic chlorides are reported. Investigations of the redox properties of the Ni-bis(oxazoline) catalyst, the reaction kinetics, and mode of electrophile activation show divergent mechanisms for these two related transformations. Notably, the mechanism of C(sp 3 ) activation changes from a Nimediated process when benzyl chlorides and Mn 0 are used to a reductant-mediated process that is gated by a Lewis acid when NHP esters and tetrakis(dimethylamino)ethylene is used. Kinetic experiments show that changing the identity of the Lewis acid can be used to tune the rate of NHP ester reduction. Spectroscopic studies support a Ni II −alkenyl oxidative addition complex as the catalyst resting state. DFT calculations suggest an enantiodetermining radical capture step and elucidate the origin of enantioinduction for this Ni-BOX catalyst.

BACKGROUND: Two out of three family members experience symptoms of posttraumatic stress, depression, or anxiety lasting for months after the ICU stay. Interventions aimed at mitigating these symptoms have been unsuccessful.RESEARCH QUESTION: To understand the emotional experiences of family members of critically ill patients and to identify coping strategies used by family members during the ICU stay.STUDY DESIGN: and Methods: As part of a mixed methods study to understand sources of distress among ICU family members, semistructured interviews were conducted with ICU family members. Family members completed surveys at the time of interview and at 90 days to assess for symptoms of depression, anxiety, and posttraumatic stress.RESULTS: Semistructured interviews and baseline surveys were conducted with 40 ICU family members; 78% of participants (n ¼ 31) completed follow-up surveys at 90 days. At the time of interview, 65% of family members had symptoms of depression, anxiety, or posttraumatic stress. At 90 days, 48% of surveyed family members had symptoms of psychological distress. Three primary emotions were identified among ICU family members: sadness, anger, and fear. A diverse array of coping strategies was used by family members, including problemsolving, information seeking, avoidance/escape, self-reliance, support seeking, and accommodation.INTERPRETATION: This study emphasizes similarities in emotions but diversity in coping strategies used by family members in the ICU. Understanding the relationship between ICU experiences, emotional responses, and long-term psychological outcomes may guide targeted interventions to improve mental health outcomes of ICU family members.

Current practice of prognostic communication in acute critical illness has many gaps, leading to distress for surrogates and variability in critical treatment decisions. Further work is needed to limit surrogate distress and improve the quality of treatment decisions.

Background Surrogate decision makers of stroke patients are often unprepared to make critical decisions on life-sustaining treatments. We describe the development process and key features for the Understanding Stroke web-based decision support tool. Methods We used multiple strategies to develop a patient-centered, tailored decision aid. We began by forming a Patient and Family Advisory Council to provide continuous input to our multidisciplinary team on the development of the tool. Additionally, focus groups consisting of nurses, therapists, social workers, physicians, stroke survivors, and family members reviewed key elements of the tool, including prognostic information, graphical displays, and values clarification exercise. To design the values clarification exercise, we asked focus groups to provide feedback on a list of important activities of daily living. An ordinal prognostic model was developed for ischemic stroke and intracerebral hemorrhage using data taken from the Virtual International Stroke Trials Archive Plus, and incorporated into the tool. Results Focus group participants recommended making numeric prognostic information optional due to possible emotional distress. Pie charts were generally favored by participants for graphical presentation of prognostic information, though a horizontal stacked bar chart was also added due to its prevalence in stroke literature. Plain language descriptions of the modified Rankin Scale were created to accompany the prognostic information. A values clarification exercise was developed consisting of a list of 13 situations that may make an individual consider comfort measures only. The final version of the web based tool (which can be viewed on tablets) included the following sections: general introduction to stroke, outcomes (prognostic information and recovery), in-hospital and life-sustaining treatments, decision making and values clarification, post-hospital care, tips for talking to the health care team, and a summary report. Preliminary usability testing received generally favorable feedback. Conclusion We developed Understanding Stroke , a tailored decision support tool for surrogate decision makers of stroke patients. The tool was well received and will be formally pilot tested in a group of stroke surrogate decision makers. Trial registration ClinicalTrials.gov ( NCT03427645 ).

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