Long-term prevalence of post-traumatic stress disorder symptoms in patients after secondary peritonitis

Prevalence of and predictive factors associated with high levels of post-traumatic stress symptoms 3 months after intensive care unit admission: A prospective study

BACKGROUND

Post-traumatic stress symptoms (PTSS) following intensive care unit (ICU) treatment may increase morbidity and mortality. Therefore, it is important to identify patients at risk of suffering from such symptoms.

OBJECTIVES

The objective of this study was to describe the prevalence and identify possible predictive factors associated with high levels of PTSS 3 months after ICU admission.

METHODS

A multicentre, observational study was carried out in six ICUs in Norway. Patients aged ≥18 years were included. The Impact of Event Scale-Revised measured PTSS 3 months after ICU admission. The impacts of pre-ICU measures; demographic and clinical measures; and daily measures of pain, agitation, and delirium were analysed using univariate and multivariate logistic regression models.

RESULTS

In total, of the 273 patients included, the prevalence rate of high levels of PTSS was 19.8% (n = 54) 3 months after ICU admission (95% confidence interval [CI]: [15.2, 25.0]). Female gender, age, pre-ICU unemployment, a minimum of one episode of agitation or delirium, and pre-ICU level of functioning in daily living were all significantly associated with high levels of PTSS in univariate logistic analyses. In the multivariate logistic regression, two models were analysed. In model 1, episodes of agitation during ICU stay (odds ratio [OR] = 4.73; 95% CI: [1.17, 19.0]), pre-ICU unemployment (OR = 3.33; 95% CI: [1.26, 8.81]), and pre-ICU level of functioning in daily living (OR = 0.78; 95% CI: [0.63, 0.96]) (implying lower level) increased the odds of reporting high levels of PTSS. In model 2, pre-ICU unemployment (OR = 2.70; 95% CI: [1.05, 6.93]) and pre-ICU level of functioning in daily living (OR = 0.77; 95% CI: [0.62, 0.95]) (implying lower level) increased the odds of reporting high levels of PTSS.

CONCLUSIONS

Healthcare personnel are suggested to be aware of ICU patients' pre-ICU employment status, pre-ICU functioning in daily living, and agitation during ICU stay to identify those at risk of PTSS after discharge.

Rates and predictors of mental health care utilisation in patients following a prolonged stay on intensive care unit: a prospective cohort study

OBJECTIVES

An acute critical illness and secondary complications may necessitate a prolonged treatment on an intensive care unit (ICU). As long-term consequences, ICU survivors may suffer from both physical and psychological sequelae. To improve the aftercare of these patients, the present study aimed to assess the use of mental healthcare and associated factors following prolonged ICU stay.

METHODS

N=197 patients with a primary diagnosis of critical illness polyneuropathy/myopathy were enrolled within 4 weeks (T1) and interviewed three (T2) and six (T3) months following the transfer from acute-care to postacute ICU. Symptoms and a current diagnosis of major depression/post-traumatic stress disorder (PTSD) were assessed using the Structured Clinical Interview for the Diagnostic and Statistical Manual of Mental Disorders. The potential need for mental healthcare, its current and past use and reasons for non-use were raised.

RESULTS

Full syndromal and subsyndromal major depression/PTSD were diagnosed in 8.3%/15.6% at T2, 12.2%/23.5% at T3. About 29% of the patients reported mental healthcare utilisation. Considering somatic complaints, more important was a common reason for the non-use of mental healthcare. Female gender, previous mental healthcare, number of sepsis episodes and pension receipt increased the chance for mental healthcare utilisation, a pre-existing mental disorder decreased it.

CONCLUSION

Every fourth patient surviving prolonged ICU treatement makes use of mental healthcare . Particularly male patients with pre-existing mental disorders should be targeted preventively, receiving specific psychoeducation about psychological long-term sequelae and mental healthcare options post-ICU.Trial registration numberDRKS00003386.

Occurrence and characteristics of pain after ICU discharge: A longitudinal study

BACKGROUND

Pain is a serious problem for intensive care unit (ICU) patients, but we are lacking data on pain at the hospital ward after ICU discharge.

AIMS AND OBJECTIVES

To describe pain intensity, -interference with function and -location in patients up to 1 year after ICU discharge. To identify demographic and clinical variables and their association with worst pain intensity and pain interference.

DESIGN

A longitudinal descriptive secondary analysis of a randomized controlled trial on nurse-led follow-up consultations on post-traumatic stress and sense of coherence after ICU discharge.

METHODS

Pain intensity, -interference, and -location were measured using Brief Pain Inventory at the hospital ward and 3, 6, and 12 months after ICU discharge. For associations, data were analysed using multivariate linear mixed models for repeated measures.

RESULTS

Of 523 included patients, 68% reported worst pain intensity score above 0 (no pain) at the ward. Estimated means for worst pain intensity and -interference (from 0 to 10) after ICU discharge were 5.5 [CI 4.6-6.5] and 4.5 [CI 3.7-5.3], and decreased to 3.8 [CI 2.8-4.8] (P ≤ .001) and 2.9 [CI 2.1-3.7] after 12 months (P ≤ .001). Most common pain locations were abdomen (43%), lower lumbar back (28%), and shoulder/forearm (22%). At 12 months, post-traumatic stress (PTS) symptoms ≥25 (scale 10-70), female gender, shorter ICU stay, and more traumatic ICU memories were significantly associated with higher worst pain intensity. PTS symptoms ≥25, female gender, more traumatic ICU memories, younger age, and not having an internal medical diagnosis were significantly associated with higher pain interference.

CONCLUSIONS

Early after ICU discharge pain was present in 68% of patients. Thereafter, pain intensity and -interference declined, but pain intensity was still at a moderate level at 12 months. Health professionals should be aware of patients' pain and identify potentially vulnerable patients.

IMPLICATION FOR PRACTICE

Longitudinal assessment of factors associated with pain early after ICU discharge and the following year is a first step that could improve follow-up focus and contribute to reduced development of chronic pain.

Posttraumatic stress disorder prevalence in medical populations: A systematic review and meta-analysis

OBJECTIVE

PTSD is increasingly recognized following medical traumas although is highly heterogeneous. It is difficult to judge which medical contexts have the most traumatic potential and where to concentrate further research and clinical attention for prevention, early detection and treatment. The objective of this study was to compare PTSD prevalence in different medical populations.

METHODS

A systematic review of the literature on PTSD following medical traumas was conducted as well as a meta-analysis with final pooled result and 95% confidence intervals presented. A meta-regression was used to investigate the impact of potential effect modifiers (PTSD severity, age, sex, timeline) on study effect size between prevalence studies.

RESULTS

From 3278 abstracts, the authors extracted 292 studies reporting prevalence. Using clinician-administered reports, the highest 24 month or longer PTSD prevalence was found for intraoperative awareness (18.5% [95% CI=5.1%-36.6%]) and the lowest was found for epilepsy (4.5% [95% CI=0.2%-12.6%]). In the overall effect of the meta-regression, only medical events or procedures emerged as significant (p = 0.006) CONCLUSION: This review provides clinicians with greater awareness of medical contexts most associated with PTSD, which may assist them in the decision to engage in more frequent, earlier screening and referral to mental health services.

Post-traumatic stress disorder symptoms after respiratory insufficiency in patients with myasthenia gravis

To explore posttraumatic stress disorder symptoms (PTSD) after respiratory insufficiency in patients with myasthenia gravis (MG). The investigation was made with 134 adult patients with MG, after respiratory insufficiency, between January 2012 and January 2016 and had a return visit after one year. 134 patients finished this study and 69 patients (51.5%) had PTSD. Anxiety (HADS-A ≥ 8, HADS: Hospital Anxiety and Depression Scale) (OR 2.585,95% CI 1.102-6.061, p = 0.029), and depression (HADS-D ≥ 8) (OR 3.200, 95% CI 1.395-7.342, p = 0.006) were associated with greater probabilities of screening positive for PTSD. Gender, age, intubation, yearly income, marriage, inability to work, number of respiratory insufficiency episodes, education level, Mini-mental state examination (MMSE) (>20), ICU stays, having insurance, and MG-activities of daily living (ADL) (<9) were not significant predictors for PTSD. One year after a respiratory insufficiency episode, patients with PTSD experienced worse anxiety (p = 0.035), depressive disorder (p < 0.001), and 36-Item Short-Form Health Survey (SF-36) showed physical functioning (p = 0.042), role-physical (p = 0.013), social functioning (p = 0.040), and emotional-role (p = 0.034). But there were no differences in ADL, bodily pain, general health and vitality. PTSD in patients with MG is common after a respiratory insufficiency episode; anxiety and depression were both associated with greater probabilities of screening positive for PTSD.

Post-traumatic stress symptoms and sense of coherence in proximity to intensive care unit discharge

BACKGROUND

Post-traumatic stress (PTS) symptoms following intensive care unit (ICU) treatment can lead to post-traumatic stress disorder and represent a severe health burden. In trauma patients, a strong sense of coherence (SOC) is associated with fewer PTS symptoms. However, this association has not been investigated in a general ICU sample.

AIMS AND OBJECTIVES

To examine the occurrence of PTS symptoms in general ICU patients early after ICU discharge and to assess possible associations between PTS symptoms and SOC, ICU memory, pain, and demographic and clinical characteristics.

DESIGN

This was a cross-sectional study.

METHODS

Adult patients aged ≥18 years admitted for ≥24 hours to five ICUs between 2014 and 2016 were recruited. PTS symptoms and SOC were measured at the ward within the first week after discharge from the ICU using the Posttraumatic Stress Scale-10 and Sense of Coherence Scale-13. Multiple linear regression analysis was used to identify associations between PTS symptoms and SOC and the selected independent variables.

RESULTS

A total of 523 patients were included (17.8% trauma patients; median age 57 years [range 18-94]; 53.3% male). The prevalence of clinically significant PTS symptoms was 32%. After adjustments for gender and age, lower SOC (P < 0.001), more ICU delusional memories (P < 0.001), greater pain interference (P < 0.001), not being a trauma patient (P = 0.02), and younger age (P = 0.03) were significantly associated with more PTS symptoms.

CONCLUSIONS

One third of patients experienced clinically relevant PTS symptoms early after discharge from the ICU. In the present study, SOC, delusional memory, pain interference, younger age, and not being a trauma patient were factors associated with more PTS symptoms.

RELEVANCE TO CLINICAL PRACTICE

Early individual follow up after ICU discharge focusing on pain relief and delusional memory may reduce PTS symptoms, with a potential of improving rehabilitation.

Psychiatric Symptoms in Survivors of Acute Respiratory Distress Syndrome. Effects of Age, Sex, and Immune Modulation

RATIONALE

Psychiatric morbidity after acute respiratory distress syndrome (ARDS) is common, and our current ability to predict psychiatric symptoms based on patient- and illness-specific factors is limited.

OBJECTIVES

We assessed symptoms of anxiety, depression, and posttraumatic stress disorder (PTSD) in long-term survivors of ARDS, as well as the associated changes in cortisol levels.

METHODS

The participants were enrolled in a randomized, double-blind, placebo-controlled trial of granulocyte macrophage-colony stimulating factor (GM-CSF) or placebo conducted at three academic medical centers. There were 132 patients enrolled, and 44 patients completed 6-month follow-up questionnaires (45% of survivors).

RESULTS

Six months after enrollment, survivors completed the Post-Traumatic Stress Syndrome 10 Questions Inventory, Impact of Event Scale, and Hospital Anxiety and Depression Scale to assess psychiatric symptoms. Plasma cortisol levels during treatment were measured by immunoassay. Thirty-six percent of patients reported significant psychiatric symptoms on at least one scale. GM-CSF-treated patients reported more severe posttraumatic stress and depression symptoms than patients in the placebo group. In multiple regression analyses, younger age, female sex, higher severity of illness, fewer steroid treatment days, and GM-CSF treatment were all independently associated with more severe psychiatric symptoms on at least one scale.

CONCLUSIONS

6 months after ARDS, age, sex, illness severity, steroids, and GM-CSF treatment were associated with psychiatric symptom scores. These associations should be confirmed in a larger population. Clinical Trial registered with clinicaltrials.gov (NCT00201409).

Risk Factors of Delayed Onset Posttraumatic Stress Disorder in Chronically Critically Ill Patients

The main aim of this study was to investigate factors associated with a delayed-onset posttraumatic stress disorder (PTSD) after the intensive care unit (ICU) treatment of patients with a chronic critical illness (CCI). Patients (n = 97) with critical illness polyneuropathy or critical illness myopathy were interviewed via the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, 4th Edition. The diagnosis of the acute stress disorder was assessed within 1 month (t1), the diagnosis of PTSD at 3 (t2) and 6 (t3) months after transfer from the acute care ICU to the post-acute ICU. Patients showing a delayed-onset or persistent course of PTSD were subsumed in one group; 24.7% (n = 24) showed a delayed-onset PTSD. Significant risk factors were as follows: the severity of the medical illness, the perceived fear of dying at the ICU, the number of traumatic memories from the ICU, and the presence of a coronary heart disease. Every fourth patient with CCI showed a delayed-onset PTSD up to 6 months after the ICU treatment. Markers for a delayed-onset PTSD should already be assessed at the time of discharge from the ICU.

Predictors of posttraumatic stress and quality of life in family members of chronically critically ill patients after intensive care

Background

Prolonged mechanical ventilation for acute medical conditions increases the risk of chronic critical illness (CCI). Close family members are confronted with the life-threatening condition of the CCI patients and are prone to develop posttraumatic stress disorder affecting their health-related quality of life (HRQL). Main aim of the present study was to investigate patient- and family-related risk factors for posttraumatic stress and decreased HRQL in family members of CCI patients.

Methods

In a cross-sectional design nested within a prospective longitudinal cohort study, posttraumatic stress symptoms and quality of life were assessed in family members of CCI patients (n = 83, aged between 18 and 72 years) up to 6 months after transfer from ICU at acute care hospital to post-acute rehabilitation. Patients admitted a large rehabilitation hospital for ventilator weaning. The Posttraumatic Stress Scale-10 and the Euro-Quality of life-5D-3L were applied in both patients and their family members via telephone interview.

Results

A significant proportion of CCI patients and their family members (14.5 and 15.7 %, respectively) showed clinically relevant scores of posttraumatic stress. Both CCI patients and family members reported poorer HRQL than a normative sample. Factors independently associated with posttraumatic stress in family members were the time following ICU discharge (β = .256, 95 % confidence interval .053–.470) and the patients’ diagnosis of PTSD (β = .264, 95 % confidence interval .045–.453). Perceived satisfaction with the relationship turned out to be a protective factor for posttraumatic stress in family members of CCI patients (β = −.231, 95 % confidence interval −.423 to −.015). Regarding HRQL in family members, patients’ acute posttraumatic stress at ICU (β = −.290, 95 % confidence interval −.360 to −.088) and their own posttraumatic stress 3 to 6 months post-transfer (β = −.622, 95 % confidence interval −.640 to −.358) turned out to be significant predictors.

Conclusions

Posttraumatic stress and HRQL should be routinely assessed in family members of CCI patients at regular intervals starting early at ICU. Preventive family-centered interventions are needed to improve posttraumatic stress and HRQL in both patients and their family members.

Electronic supplementary material

The online version of this article (doi:10.1186/s13613-016-0174-0) contains supplementary material, which is available to authorized users.

Literature review of post-traumatic stress disorder in the critical care population

AIM

To determine which factors relate to the development of post-traumatic stress disorder, in adult patients who are admitted to critical care units.

BACKGROUND

Patient survival rates from critical care areas are improving each year and this has led to interest in the long-term outcomes for patients who have been discharged from such environments. Patients typically require invasive and extensive treatment, which places a stress on physical and mental health. Prevalence estimates of post-traumatic stress disorder in the critical care discharge population vary from 5-63%, yet it remains unclear what the predisposing factors are.

DESIGN

A systematised review.

METHOD

Subject heading and keyword searches were conducted in MEDLINE, CINAHL, PsycINFO and ScienceDirect, with 23 articles identified that examined the relationship between critical care and the development of post-traumatic stress disorder.

RESULTS

Three main themes were identified; Critical Care Factors, Patient Factors and Experience Factors. Eight key and three potential causative factors were found: younger age, female, previous psychiatric history, length of ICU stay, benzodiazepine sedation, use of stress hormones, delusional memory and traumatic memory, delirium, GCS score of ≤9 on admission & use of mechanical restraint.

CONCLUSIONS

Post-traumatic stress reactions can be strongly related to the development and presence of traumatic and delusional memories. Younger patients may exclude themselves from research to avoid their traumatic thoughts. The role of prior psychiatric illness is unknown. Distinction between 'factual' and 'false' or delusional memory as occurs in the literature maybe unhelpful in understanding trauma reactions.

RELEVANCE TO CLINICAL PRACTICE

There are around 38,000 occupied critical care beds each year in England. The scale of the issue is therefore substantial. Risk factors can be isolated from available evidence and provide a rudimentary risk assessment tool to inform practice development in this area.

Cecal Ligation and Puncture Results in Long-Term Central Nervous System Myeloid Inflammation

Survivors of sepsis often experience long-term cognitive and functional decline. Previous studies utilizing lipopolysaccharide injection and cecal ligation and puncture in rodent models of sepsis have demonstrated changes in depressive-like behavior and learning and memory after sepsis, as well as evidence of myeloid inflammation and cytokine expression in the brain, but the long-term course of neuroinflammation after sepsis remains unclear. Here, we utilize cecal ligation and puncture with greater than 80% survival as a model of sepsis. We found that sepsis survivor mice demonstrate deficits in extinction of conditioned fear, but no acquisition of fear conditioning, nearly two months after sepsis. These cognitive changes occur in the absence of neuronal loss or changes in synaptic density in the hippocampus. Sepsis also resulted in infiltration of monocytes and neutrophils into the CNS at least two weeks after sepsis in a CCR2 independent manner. Cellular inflammation is accompanied by long-term expression of pro-inflammatory cytokine and chemokine genes, including TNFα and CCR2 ligands, in whole brain homogenates. Gene expression analysis of microglia revealed that while microglia do express anti-microbial genes and damage-associated molecular pattern molecules of the S100A family of genes at least 2 weeks after sepsis, they do not express the cytokines observed in whole brain homogenates. Our results indicate that in a naturalistic model of infection, sepsis results in long-term neuroinflammation, and that this sustained inflammation is likely due to interactions among multiple cell types, including resident microglia and peripherally derived myeloid cells.

Stress disorders following prolonged critical illness in survivors of severe sepsis

OBJECTIVES

To examine the frequency of acute stress disorder and posttraumatic stress disorder in chronically critically ill patients with a specific focus on severe sepsis, to classify different courses of stress disorders from 4 weeks to 6 months after transfer from acute care hospital to postacute rehabilitation, and to identify patients at risk by examining the relationship between clinical, demographic, and psychological variables and stress disorder symptoms.

DESIGN

Prospective longitudinal cohort study, three assessment times within 4 weeks, 3 months, and 6 months after transfer to postacute rehabilitation.

SETTING

Patients were consecutively enrolled in a large rehabilitation hospital (Clinic Bavaria, Kreischa, Germany) admitted for ventilator weaning from acute care hospitals.

PATIENTS

We included 90 patients with admission diagnosis critical illness polyneuropathy or critical illness myopathy with or without severe sepsis, age between 18 and 70 years with a length of ICU stay greater than 5 days.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Acute stress disorder and posttraumatic stress disorder were diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition, criteria by a trained and experienced clinical psychologist using a semistructured clinical interview for Diagnostic and Statistical Manual of Mental Disorders. We further administered the Acute Stress Disorder Scale and the Posttraumatic Symptom Scale-10 to assess symptoms of acute stress disorder and posttraumatic stress disorder. Three percent of the patients had an acute stress disorder diagnosis 4 weeks after transfer to postacute rehabilitation. Posttraumatic stress disorder was found in 7% of the patients at 3-month follow-up and in 12% after 6 months, respectively. Eighteen percent of the patients showed a delayed onset of posttraumatic stress disorder. Sepsis turned out to be a significant predictor of posttraumatic stress disorder symptoms at 3-month follow-up.

CONCLUSIONS

A regular screening of post-ICU patients after discharge from hospital should be an integral part of aftercare management. The underlying mechanisms of severe sepsis in the development of posttraumatic stress disorder need further examination.

Propranolol, post-traumatic stress disorder, and intensive care: incorporating new advances in psychiatry into the ICU

Post-traumatic stress disorder (PTSD) is a common complication of an ICU admission. Rarely is there a continuation of care, which is aimed at screening for and treating this debilitating disease. Current treatment options for PTSD are held back by inconsistent efficacy, poor evidence, and a lack of understanding of its psychopathology. Without 'gold standard' assessment techniques to diagnose PTSD after an ICU admission, the development of care pathways is hindered. This paper advocates for two interwoven advances in psychiatric care (specifically for PTSD) after ICU: (1) incorporate the monitoring and treating of psychiatric co-morbidities during extended patient follow-up, and (2) rapidly adopting the latest research to maximize its benefit. The discovery that memories were not fixed, but malleable to change, set off a sequence of experiments that have revolutionized the approach to treating PTSD. It is hoped that the phenomenon of reconsolidation can be exploited therapeutically. In the act of remembering and re-storing traumatic memories, propranolol can act to dissociate the state of sympathetic arousal from their recollection. Often, ICU patients have multiple physical co-morbidities that may be exacerbated, or their treatment disrupted, by such a pervasive psychological condition. The rapid uptake of new techniques, aimed at reducing PTSD after ICU admission, is necessary to maximize the quality of care given to patients. Increasingly, the realization that the role of intensive care specialists may extend beyond the ICU is changing clinical practice. As this field advances, intensivists and psychiatrists alike must collaborate by using the latest psychopharmacology to treat their patients and combat the psychological consequences of experiencing the extremes of physiological existence.

Postoperative pain and subsequent PTSD-related symptoms in patients undergoing lung resection for suspected cancer

BACKGROUND

Because lung cancer resection is at the crossroad between cancer and high-risk surgery, we hypothesized that the patients undergoing lung resection for cancer are exposed to develop a post-traumatic stress disorder (PTSD) syndrome-related symptoms.

METHODS

Forty-seven adult patients were included in the study. Patients were eligible for inclusion if they underwent lung resection for suspected cancer, if they were able to speak and read French, and if they agreed to be reached for a telephone interview. We assessed before, immediately after, and 3 months after surgery the presence of symptoms of anxiety and depression (Hospital Anxiety and Depression Scale) and PTSD-related symptoms (impact of events scale revised [IES-R]). At the 3-month assessment, an IES-R score > 22 was used as criteria for predicting the patients at risk of PTSD-related symptoms.

RESULTS

We identified an IES-R score higher than 22 in 24 participants (51%). Patients with a preoperatory Hospital Anxiety and Depression Scale(anxiety) score more than 7 (T0) and a maximal visual analogic scale score more than 40 during the first 24 hours after surgery were more likely to develop PTSD-related symptoms at 3-months with odd ratios at 4.61 [1.20-17.73] (p = 0.03) and 1.34 [1.05-1.75] (p = 0.02).

CONCLUSION

The prevalence of PTSD-related symptoms after lung cancer resection is high, showing that lung cancer patients undergoing surgical resection are at high risk of postprocedure burden. The presence of preoperative symptoms of anxiety and acute procedural pain during the early postoperative period are strong predictors for developing PTSD-related symptoms after lung cancer surgery.

[Quality of results of therapy of acute respiratory failure : changes over a period of two decades]

Progress in intensive care (ICU) treatment of acute respiratory distress syndrome (ARDS) over the last 20 years includes the introduction of extracorporeal membrane oxygenation (ECMO) for CO2 removal and the widespread use of evidence-based lung-protective ventilatory strategies. Little is known, however, about whether these changes have resulted in improvements in short-term and long-term outcome of acute respiratory distress syndrome (ARDS) within the two decades after introduction. In a retrospective study 167 long-term survivors of severe ARDS who were transferred to the clinic for anesthesiology of the University of Munich, Campus Großhadern by means of specialized intensive care unit (ICU) transport teams and treated over a period of 20 years (1985-2005) were evaluated to investigate whether significant improvements in outcome as a consequence of the above mentioned progress in ARDS therapy have occurred. The ARDS patient cohort studied was characterized with regard to demographic variables, initial acute physiology and chronic health evaluation (APACHE) II score, duration of ICU treatment, the duration of mechanical ventilation and mortality. Data on long-term outcome were collected in a subcohort (n = 125) of patients who responded to mailed questionnaires and included health-related quality of life (HRQL, SF-36 questionnaire), symptoms of post-traumatic stress disorder (PTSD), traumatic memories from ICU treatment (PTSS-10 instrument) and current state of employment. During the observation period no significant changes regarding patient age (39 ± 16 years, mean ± SD), disease severity on admission to the ICU (APACHE II scores 22 ± 5), duration of ICU treatment (47 ± 39 days) or duration of mechanical ventilation (39 ± 38 days) were found. Overall ICU mortality during the two decades was 37.3 % (range 25.0 %-38.1 %) between 1995 and 2001 and a non-significant increase in values between 36.8 % and 58.3 % during the time interval from 2002 und 2005. The paO2/FIO2-ratio on ICU admittance improved significantly between 1990 and 2000 (69 ± 5 between 1990 and 1994 versus 101 ± 12 between 1995 and 2000, p < 0.01) and remained nearly unchanged thereafter. Long-term outcome was evaluated on average 5.0 ± 3.1 years after discharge from the ICU. During the time period between 1985 and 1994 survivors of ARDS showed significant impairments in all 8 categories of the SF-36 HRQL instrument when compared to an age and sex-matched normal population with maximal differences regarding physical function (z = -1.01), general health perception (z = -1.17) and mental health (z = -1.3). Patients who were treated from 1995 to 2005 were still impaired in 7 out of 8 categories of HRQL but reported significantly better mental health (49.6 ± 16.5 vs. 68.6 ± 17.8, p < 0,01) and better physical function than individuals from the previous decade (49.6 ± 16.5 vs. 73.4 ± 27.5, p = 0,03). The difference of mental health was no longer significant when compared to a healthy age and sex matched control group (p = 0.14) but the difference in physical function still was (z = -0.48, p < 0.01). The incidence of severe post-traumatic stress defined as a PTSS-10 score ≥ 35 was 20.4 % and remained unchanged throughout the 2 decades of observation. The PTSS-10 scores correlated with the number of traumatic memories present (r = 0.43, p < 0.01, n = 125). More than 50 % of long-term survivors were able to return to full time work with no significant changes during the 2 decades of observation. The introduction of new modalities of ARDS treatment were associated with higher paO2/FIO2-ratios on ICU admittance but had no effect on short-term outcomes including duration of ICU therapy, mechanical ventilation or mortality. The ARDS patients are still at risk for post-traumatic stress and persistent impairments in HRQL. Apart from some improvements in HRQL, the outcome of ARDS therapy remained largely unchanged during two decades.

A genotype-specific, randomized controlled behavioral intervention to improve the neuroemotional outcome of cardiac surgery: study protocol for a randomized controlled trial

Background

Cardiac surgery is one of the most commonly performed surgical procedures worldwide with >700,000 surgeries in 2006 in the US alone. Cardiac surgery results in a considerable exposure to physical and emotional stress; stress-related disorders such as depression or post-traumatic stress disorder are the most common adverse outcomes of cardiac surgery, seen in up to 20% of patients. Using information from a genome-wide association study to characterize genetic effects on emotional memory, we recently identified a single nucleotide polymorphism of the glucocorticoid receptor gene (the Bcll single nucleotide polymorphism) as a significant genetic risk factor for traumatic memories from cardiac surgery and symptoms of post-traumaticstress disorder. The Bcll high-risk genotype (Bcll GG) has a prevalence of 16.6% in patients undergoing cardiac surgery and is associated with increased glucocorticoid receptor signaling under stress. Concomitant animal experiments have confirmed an essential role of glucocorticoid receptor activation for traumatic memory formation during stressful experiences. Early cognitive behavioral intervention has been shown to prevent stress-related disorders after heart surgery.

Methods/Design

The proposed study protocol is based on the above mentioned earlier findings from animal experiments and preclinical studies in volunteers. Patients (n = 872) will be genotyped for the Bcll single nucleotide polymorphism before surgery, which should result in 120 homozygous high-risk carriers of the Bcll GG allele and 240 randomly selected low-risk heterozygous or non-carriers of the single nucleotide polymorphism. All patients will then undergo randomization to either cognitive behavioral intervention or a control intervention consisting of non-specific general information about the role of stress in heart disease. The primary efficacy endpoint will be post-traumatic stress levels at one year after surgery as determined by a standardized questionnaire that has been specifically validated in patients after critical illness.

Discussion

The proposed randomized controlled trial intends to demonstrate that a preoperatively administered minimal cognitive behavioral intervention targeted to homozygous carriers of the Bcll *G high-risk allele reduces traumatic memories and post-traumatic stress disorder symptoms after heart surgery to a level seen in non-carriers of the mutation, and thus improves the neuroemotional outcome of cardiac surgery.

Trial registration number

The trial will be registered at http://www.clinicaltrials.gov/ before commencing with the study.

A beta-adrenergic antagonist reduces traumatic memories and PTSD symptoms in female but not in male patients after cardiac surgery

BACKGROUND

Epinephrine enhances emotional memory whereas beta-adrenoceptor antagonists (beta-blockers, BBs) impair it. However, the effects of BB administration on memory are sex dependent. Therefore, we predicted differential effects of epinephrine and the BB metoprolol given to male and female patients after cardiac surgery (CS) on traumatic memories and post-traumatic stress disorder (PTSD) symptoms.

METHOD

We performed a prospective observational study and determined the number of standardized traumatic memories (NTRM) and PTSD symptom intensity in cardiac surgical patients at 1 day before surgery, and at 1 week and 6 months after the procedure. PTSD symptoms and NTRM were quantified using validated questionnaires. Metoprolol could be administered any time post-operatively.

RESULTS

Baseline NTRM was not significantly different between male (n=95) and female patients (n=33). One week after CS, the NTRM in male patients was significantly higher. Metoprolol had no significant effect in either sex. At 6 months, females with metoprolol (n=18) showed a significantly lower NTRM and significantly lower PTSD symptom scores than females without BBs (n=15, p=0.02). By contrast, the totally administered dosage of epinephrine correlated with NTRM in males (r=0.33, p<0.01) but not in females (r=0.21, p=0.29).

CONCLUSIONS

beta-Adrenergic stimulation with epinephrine enhances memory for adverse experiences in males but not in females whereas beta-blockade selectively reduces memory for post-operative adverse events and PTSD symptoms in females.

Mental health and posttraumatic stress symptoms 2 years after severe multiple trauma: self-reported disability and psychosocial functioning

OBJECTIVES

To describe mental health and posttraumatic stress symptoms (PTSS) for patients with severe multiple trauma at 2 years postinjury. Further, objectives were to examine relationships between PTSS and factors related to the person, injury, and postinjury physical and psychosocial functioning from the time of return home to 2 years after injury. The final aim was to identify predictors of PTSS and mental health at 2 years.

DESIGN

Prospective cohort study with a 2-year follow-up.

SETTING

Hospital and community setting.

PARTICIPANTS

Patients (N=99) age 18 to 67 years with multiple trauma and a New Injury Severity Score (NISS) greater than 15 treated at a regional trauma referral center. Mean age +/- SD was 35.3+/-14.2 years; 83% were men. Mean NISS +/- SD was 34.9+/-12.7.

INTERVENTION

Not applicable.

MAIN OUTCOME MEASURES

Postinjury psychologic distress associated with depression on the Medical Outcomes Study 36-Item Short-Form Health Survey Mental Health scale and PTSS on the Post-Traumatic Symptom Scale 10 (PTSS-10) at 2 years post injury. Self-reported physical, mental, and cognitive functioning at the return home and 1 and 2 years, and coping strategies.

RESULTS

Mean PTSS-10 score +/- SD at 2 years was 25.6+/-12.2. Twenty percent had a PTSS-High score, indicating posttraumatic stress disorder (PTSD). Twenty-seven percent had Mental Health scores indicating depression. Predictors of PTSS were sex (female), younger age, avoidant coping, pain, mental health, and cognitive functioning on the return home, which explained 70% of the variance in PTSS-10 score.

CONCLUSIONS

Twenty percent had a PTSS-High score indicating PTSD at 2 years postinjury. The personal factors sex (female), younger age, and avoidant coping and the functional factors pain, mental health, and cognitive functioning predicted PTSS at 2 years.

Year in review 2007: Critical Care--intensive care unit management

With the development of new technologies and drugs, health care is becoming increasisngly complex and expensive. Governments and health care providers around the world devote a large proportion of their budgets to maintaining quality of care. During 2007, Critical Care published several papers that highlight important aspects of critical care management, which can be subdivided into structure, processes and outcomes, including costs. Great emphasis was given to quality of life after intensive care unit stay, especially the impact of post-traumatic stress disorder. Significant attention was also given to staffing level, optimization of intensive care unit capacity, and drug cost-effectiveness, particularly that of recombinant human activated protein C. Managing costs and providing high-quality care simultaneously are emerging challenges that we must understand and meet.

Factors associated with posttraumatic stress symptoms in a prospective cohort of patients after abdominal sepsis: a nomogram

Objective

To determine to what extent patients who have survived abdominal sepsis suffer from symptoms of posttraumatic stress disorder (PTSD) and depression, and to identify potential risk factors for PTSD symptoms.

Design and setting

PTSD and depression symptoms were measured using the Impact of Events Scale–Revised (IES-R), the Post-Traumatic Symptom Scale 10 (PTSS-10) and the Beck Depression Inventory II (BDI-II).

Patients and participants

A total of 135 peritonitis patients were eligible for this study, of whom 107 (80%) patients completed the questionnaire. The median APACHE-II score was 14 (range 12–16), and 89% were admitted to the ICU.

Measurements and results

The proportion of patients with “moderate” PTSD symptom scores was 28% (95% CI 20–37), whilst 10% (95% CI 6–17) of patients had “high” PTSD symptom scores. Only 5% (95% CI 2–12) of the patients expressed severe depression symptoms. Factors associated with increased PTSD symptoms in a multivariate ordinal regression model were younger age (0.74 per 10 years older, p = 0.082), length of ICU stay (OR = 1.4 per doubling of duration, p = 0.003) and having some (OR = 4.9, p = 0.06) or many (OR = 55.5, p < 0.001) traumatic memories of the ICU or hospital stay.

Conclusion

As many as 38% of patients after abdominal sepsis report elevated levels of PTSD symptoms on at least one of the questionnaires. Our nomogram may assist in identifying patients at increased risk for developing symptoms of PTSD.

Electronic supplementary material

The online version of this article (doi:10.1007/s00134-007-0941-3) contains supplementary material, which is available to authorized users.

Adult Post-Traumatic Stress Disorder: Screening and Treating in Primary Care

Trauma and post-traumatic stress disorder (PTSD) affect patients' physical health and daily functioning. Primary care physicians should remember to screen for trauma history and symptoms of PTSD when patients present with somatization, chronic pain, or other unexplained symptoms. Perceived loss of control, including physical examinations and procedures, may be frightening, and physicians should ask the patient's permission before touching them. Patients who have PTSD benefit from treatment, including both psychopharmacology (primarily selective serotonin reuptake inhibitors) and psychotherapy. Finally, hearing patients' stories of trauma and exposure to very sick patients can be traumatizing for physicians, who are encouraged to actively engage in self-care activities.

Health related quality of life six months following surgical treatment for secondary peritonitis--using the EQ-5D questionnaire

BACKGROUND

To compare health related quality of life (HR-QoL) in patients surgically treated for secondary peritonitis to that of a healthy population. And to prospectively identify factors associated with poorer (lower) HR-QoL.

DESIGN

A prospective cohort of secondary peritonitis patients was mailed the EQ-5D and EQ-VAS 6-months following initial laparotomy.

SETTING

Multicenter study in two academic and seven regional teaching hospitals.

PATIENTS

130 of the 155 eligible patients (84%) responded to the HR-QoL questionnaires.

RESULTS

HR-QoL was significantly worse on all dimensions in peritonitis patients than in a healthy reference population. Peritonitis characteristics at initial presentation were not associated with HR-QoL at six months. A more complicated course of the disease leading to longer hospitalization times and patients with an enterostomy had a negative impact on the mobility (p = 0.02), self-care (p < 0.001) and daily activities: (p = 0.01). In a multivariate analysis for the EQ-VAS every doubling of hospital stay decreases the EQ-VAS by 3.8 points (p = 0.015). Morbidity during the six-month follow-up was not found to be predictive for the EQ-5D or EQ-VAS.

CONCLUSION

Six months following initial surgery, patients with secondary peritonitis report more problems in HR-QoL than a healthy reference population. Unfavorable disease characteristics at initial presentation were not predictive for poorer HR-QoL, but a more complicated course of the disease was most predictive of HR-QoL at 6 months.

Medical post-traumatic stress disorder: catching up with the cutting edge in stress research

We briefly summarize two original research papers and a review article. We then review the formal structure of the diagnosis of post-traumatic stress disorder (PTSD) and discuss the use of continuous measures of PTSD in comparison with diagnostic instruments. Problems with distinguishing incident from prevalent PTSD cases lead to questions of whether medical PTSD is a new important problem. By examining current studies, we demonstrate that medical PTSD is lagging in fundamental and interventional research but we discuss how medical PTSD has unique opportunities to develop causal models that could inform the greater field of stress studies. We conclude by advocating that future medical PTSD research efforts should focus on understanding how fundamental brain processes are affected during acute medical stress.