Christina Jones

Memory, delusions, and the development of acute posttraumatic stress disorder-related symptoms after intensive care

ObjectiveTo examine prospectively the relationship between memories of intensive care (ICU) and levels of anxiety after ICU discharge, the stability of these memories with time, and their relationship to the development of acute posttraumatic stress disorder (PTSD)-related symptoms. DesignCase series cohort assessed by interview at 2 and 8 wks after ICU discharge. SettingDistrict general hospital (serving a population of 350,000) general intensive care unit. PatientsMemories of ICU and anxiety levels were studied in 45 patients after ICU discharge. Thirty patients were examined again at 8 wks to assess memory stability and development of acute PTSD-related symptoms. Measurements and Main Results Standardized interviews and questionnaires were used to assess memory for ICU, anxiety, and depression 2 wks after ICU discharge. In addition, PTSD-related symptoms and panic were assessed 8 wks after ICU discharge. A total of 33 of 45 patients had delusional memories from ICU at 2 wks; nine of the patients with delusional memories had no factual memories, and these patients had higher anxiety levels 2 wks after ICU discharge (p < .0001). Thirty patients had paired assessments at 2 and 8 wks. Those patients who had no factual recall of ICU but had delusional memories at 2 wks scored highly for PTSD-related symptoms and panic attacks at 8 wks (p = .023 and .014, respectively). The only predictors of possible acute PTSD-related symptoms at the 8-wk assessment were trait anxiety (p = .006) and having delusional memories without recall of factual events in the ICU at 2 wks (p < .0001). Only delusional memories were retained over time, whereas the recall of factual events in the ICU declined. ConclusionsWe propose that the development of acute PTSD-related symptoms may be related more to recall of delusions alone. This study suggests that even relatively unpleasant memories for real events during critical illness may give some protection from anxiety and the later development of PTSD-related symptoms when memories of delusions are prominent.

Six-month outcome of critically ill patients given glutamine-supplemented parenteral nutrition.

An abundant amino acid in the human body, glutamine (Gln) has many important metabolic roles that may protect or promote tissue integrity and enhance the immune system. Low plasma and tissue levels of Gln in the critically ill suggest that demand may exceed endogenous supply. A relative deficiency of Gln in such patients could compromise recovery and result in prolonged illness and an increase in late mortality. This study examines this hypothesis. Using a prospective, block-randomized, double-blind treatment study design, we tested whether a Gln-containing parenteral nutrition (PN) compared with an isonitrogenous, isoenergetic control feed would influence outcome, with the endpoints of morbidity, mortality, and cost at 6 mo postintervention. In one general intensive care unit (ICU), to ensure consistency of management policies, 84 critically ill adult patients, with Acute Physiological and Chronic Health Evaluation II score > 10, requiring nutritional support received PN only if enteral nutrition was contraindicated or unsuccessful. Survival at 6 mo was significantly improved in those receiving Gln PN (24/42 versus 14/42; P = 0.049). Significantly more deaths occurred in patients requiring control PN for > 10 d (P = 0.03). The excess control deaths occurred later and those patients had had a significantly longer postintervention stay (P = 0.012) and use of ICU. In the Gln recipients, the total ICU and hospital cost per survivor was reduced by 50%. In critically ill ICU patients unable to receive enteral nutrition, a Gln-containing PN solution improves survival at 6 mo and reduces the hospital costs per survivor.

Improving long-term outcomes after discharge from intensive care unit: report from a stakeholders' conference.

Background: Millions of patients are discharged from intensive care units annually. These intensive care survivors and their families frequently report a wide range of impairments in their health status which may last for months and years after hospital discharge. Objectives: To report on a 2-day Society of Critical Care Medicine conference aimed at improving the long-term outcomes after critical illness for patients and their families. Participants: Thirty-one invited stakeholders participated in the conference. Stakeholders represented key professional organizations and groups, predominantly from North America, which are involved in the care of intensive care survivors after hospital discharge. Design: Invited experts and Society of Critical Care Medicine members presented a summary of existing data regarding the potential long-term physical, cognitive and mental health problems after intensive care and the results from studies of postintensive care unit interventions to address these problems. Stakeholders provided reactions, perspectives, concerns and strategies aimed at improving care and mitigating these long-term health problems. Measurements and Main Results: Three major themes emerged from the conference regarding: (1) raising awareness and education, (2) understanding and addressing barriers to practice, and (3) identifying research gaps and resources. Postintensive care syndrome was agreed upon as the recommended term to describe new or worsening problems in physical, cognitive, or mental health status arising after a critical illness and persisting beyond acute care hospitalization. The term could be applied to either a survivor or family member. Conclusions: Improving care for intensive care survivors and their families requires collaboration between practitioners and researchers in both the inpatient and outpatient settings. Strategies were developed to address the major themes arising from the conference to improve outcomes for survivors and families.

Rehabilitation after critical illness: A randomized, controlled trial

ObjectiveTo evaluate the effectiveness of a rehabilitation program following critical illness to aid physical and psychological recovery. DesignRandomized controlled trial, blind at follow-up with final assessment at 6 months. SettingTwo district general hospitals and one teaching hospital. PatientsPatients were 126 consecutively admitted intensive care patients meeting the inclusion criteria. InterventionsControl patients received ward visits, three telephone calls at home, and clinic appointments at 8 wks and 6 months. Intervention patients received the same plus a 6-wk self-help rehabilitation manual. Measurements and Main ResultsWe measured levels of depression and anxiety (Hospital Anxiety and Depression Scale), phobic symptoms (Fear Index), posttraumatic stress disorder (PTSD)-related symptoms (Impact of Events Scale), and scores on the Short-Form Health Survey physical dimension 8 wks and 6 months after intensive care unit (ICU) treatment. Memory for ICU was assessed at 2 wks post-ICU discharge using the ICU Memory Tool.The intervention group improved, compared with the control patients, on the Short-Form Health Survey physical function scores at 8 wks and 6 months (p = .006), and there was a trend to a lower rate of depression at 8 wks (12% vs. 25%). However, there were no differences in levels of anxiety and PTSD-related symptoms between the groups. The presence of delusional memories was correlated significantly with both anxiety and Impact of Events Scale scores. ConclusionsA self-help rehabilitation manual is effective in aiding physical recovery and reducing depression. However, in those patients recalling delusional memories from the ICU, further psychological care may be needed to reduce the incidence of anxiety and PTSD-related symptoms.

Family response to critical illness: Postintensive care syndrome-family

Background: The family response to critical illness includes development of adverse psychological outcomes such as anxiety, acute stress disorder, posttraumatic stress, depression, and complicated grief. This cluster of complications from exposure to critical care is now entitled postintensive care syndrome–family. Adverse psychological outcomes occur in parents of neonatal and pediatric patients and in family members of adult patients, and may be present for >4 yrs after intensive care unit discharge. Psychological repercussions of critical illness affect the family members ability to fully engage in necessary care-giving functions after hospitalization. Prevention: It has been suggested that the manner in which healthcare workers communicate with family members and the way in which families are included in care and decision-making, may affect long-term outcomes. Preventive strategies for optimal communication and inclusion in care are reviewed. Assessment: Many tools are available to assess the risk for and to diagnose postintensive care syndrome–family conditions during hospitalization and at intervals after discharge. Treatment: Visits after discharge, support groups, and clinics have been proposed for assessing the need for professional referrals as well as for treating family members when psychological illness persists. Studies evaluating these measures are reviewed.

Intensive care diaries reduce new onset post traumatic stress disorder following critical illness: a randomised, controlled trial

IntroductionPatients recovering from critical illness have been shown to be at risk of developing Post Traumatic Stress disorder (PTSD). This study was to evaluate whether a prospectively collected diary of a patients intensive care unit (ICU) stay when used during convalescence following critical illness will reduce the development of new onset PTSD.MethodsIntensive care patients with an ICU stay of more than 72 hours were recruited to a randomised controlled trial examining the effect of a diary outlining the details of the patients ICU stay on the development of acute PTSD. The intervention patients received their ICU diary at 1 month following critical care discharge and the final assessment of the development of acute PTSD was made at 3 months.Results352 patients were randomised to the study at 1 month. The incidence of new cases of PTSD was reduced in the intervention group compared to the control patients (5% versus 13%, P = 0.02).ConclusionsThe provision of an ICU diary is effective in aiding psychological recovery and reducing the incidence of new PTSD.Trial registrationNCT00912613.

Randomized clinical outcome study of critically ill patients given glutamine-supplemented enteral nutrition

Glutamine is normally an abundant amino acid in the body. It has many important metabolic roles, which may protect or promote tissue integrity and enhance the immune system. Low plasma and tissue levels of glutamine in the critically ill suggest that demand may exceed endogenous supply. A relative deficiency of glutamine could compromise recovery, resulting in prolonged illness and an increase in late mortality, morbidity, and consequently hospital costs. Using a prospective block-randomized, double-blind treatment study design, we tested whether a glutamine-containing enteral feed compared with an isonitrogenous, isoenergetic control feed would influence outcome. The study endpoints were morbidity, mortality, and hospital cost at 6 mo postintervention. In one general intensive care unit (ICU), to ensure consistency of management policies, 78 critically ill adult patients with Acute Physiological and Chronic Health Evaluation (APACHE) II score of 11 and greater and who were considered able to tolerate introduction of enteral nutrition were studied. Fifty patients successfully received enteral nutrition (26 glutamine, 24 control). There was no mortality difference between those patients receiving glutamine-containing enteral feed and the controls. However, there was a significant reduction in the median postintervention ICU and hospital patient costs in the glutamine recipients

Infection, multiple organ failure, and survival in the intensive care unit: influence of glutamine-supplemented parenteral nutrition on acquired infection

23,000 versus

Significant cognitive dysfunction in non-delirious patients identified during and persisting following critical illness

30,900 in the control patients (P = 0.036). For patients given glutamine there was a reduced cost per survivor of 30%. We conclude that in critically ill ICU patients enteral feeds containing glutamine have significant hospital cost benefits.

Understanding posttraumatic stress disorder-related symptoms after critical care: the early illness amnesia hypothesis.

OBJECTIVE We investigated the effect of a glutamine-supplemented parenteral nutrition on intensive-care-acquired infection (ICAI) and its relation to outcome. METHODS We analyzed new data prospectively collected during a double-blind, randomized, and controlled trial in an adult general intensive care unit previously reported (Nutrition 1997;13:295). Eighty-four patients were randomized to receive glutamine-supplemented total parenteral nutrition or an isonitrogenous, isoenergetic control. Sepsis was present on admission in 71% of the patients. Clinical and microbiological data were collected on all new infective episodes and associated treatment decisions. Data were analyzed blind to the randomization and study outcome. RESULTS There was no significant difference in the number of patients developing new infections or in the number occurring during the first 5 d. There was a non-significant trend to increased numbers of infections in those patients receiving the control feed for at least 5 d. In these patients the glutamine recipients showed significantly fewer catheter-related infections: 21 versus 12 (P = 0.026). The difference in overall 6-mo mortality was almost completely described by those patients fed for at least 5 d: 9 of 25 versus 18 of 27 using the control nutrition (P = 0.05). Of the deaths in the intensive care unit due to multiple organ failure, 8 of 8 in the glutamine group and 14 of 16 in the control group sustained one or more ICAI and accounted for 38% versus 74%, respectively, of the ICAIs occurring in those patients. In those patients, despite a similar high incidence of colonization with Candida, those receiving glutamine developed fewer Candida infections and none died, whereas six control patients who developed Candida infections died from multiple organ failure (P = 0.02). Survival was not related to the reduced occurrence of the first acquired infection; however, binary logistic regression analysis of glutamine and the incidence of ICAI after starting total parenteral nutrition to outcome showed that only glutamine was significantly associated with improved 6-mo survival (P = 0.027). CONCLUSIONS In these severely ill patients, parenteral nutrition containing glutamine may not reduce the overall incidence of ICAI, but it may reduce the risk of dying from acquired infections. The improved survival seen at 6 mo appeared related mostly to reduced mortality in the intensive care unit from multiple organ failure in those patients in whom acquired infections are common.