Outcome prediction in comatose cardiac arrest patients with initial shockable and non-shockable rhythms.

BACKGROUND: Prognosis after out-of-hospital cardiac arrest (OHCA) is presumed poorer in patients with non-shockable than shockable rhythms, frequently leading to treatment withdrawal. Multimodal outcome prediction is recommended 72 h post-arrest in still comatose patients, not considering initial rhythms. We investigated accuracy of outcome predictors in all comatose OHCA survivors, with a particular focus on shockable vs. non-shockable rhythms. METHODS: In this observational NORCAST sub-study, patients still comatose 72 h post-arrest were stratified by shockable vs. non-shockable rhythms for outcome prediction analyzes. Good outcome was defined as cerebral performance category 1-2 within 6 months. False positive rate (FPR) was used for poor and sensitivity for good outcome prediction accuracy. RESULTS: Overall, 72/128 (56%) patients with shockable and 12/50 (24%) with non-shockable rhythms had good outcome (p < .001). For poor outcome prediction, absent pupillary light reflexes (PLR) and corneal reflexes (clinical predictors) 72 h after sedation withdrawal, PLR 96 h post-arrest, and somatosensory evoked potentials (SSEP), all had FPR <0.1% in both groups. Unreactive EEG and neuron-specific enolase (NSE) >60 µg/L 24-72 h post-arrest had better precision in shockable patients. For good outcome, the clinical predictors, SSEP and CT, had 86%-100% sensitivity in both groups. For NSE, sensitivity varied from 22% to 69% 24-72 h post-arrest. The outcome predictors indicated severe brain injury proportionally more often in patients with non-shockable than with shockable rhythms. For all patients, clinical predictors, CT, and SSEP, predicted poor and good outcome with high accuracy. CONCLUSION: Outcome prediction accuracy was comparable for shockable and non-shockable rhythms. PLR and corneal reflexes had best precision 72 h after sedation withdrawal and 96 h post-arrest.

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.

Multifaceted intervention including Facebook-groups to improve guideline-adherence in ICU: A quasi-experimental interrupted time series study.

BACKGROUND: The impact of social media, with its speed, reach and accessibility, in interventions aimed to improve adherence to guidelines such as assessment of Pain, Agitation/Sedation and Delirium (PAD) in intensive care is not described. Therefore, the primary objective of this quality improvement study was to evaluate the impact of a multifaceted intervention including audit and feedback of quality indicators (QI) via Facebook-groups, educational events and engagement of opinion leaders on adherence to PAD-guidelines in four ICUs. METHODS: A quasi-experimental interrupted time series study with eight monthly data points in the two phases Before and Intervention was designed. Proportion of nursing shifts with documented PAD-assessment (PAD-QIs) were retrieved from the electronical medical chart from included adult ICU patient-stays in four participating ICUs. Difference between the two time periods was assessed using generalised mixed model for repeated measures with unstructured covariance matrix, and presented as Beta (B) with 95% confidence interval (CI). RESULTS: Finally, 1049 ICU patient-stays were analysed; 534 in Before and 515 in Intervention. All three PAD-QIs significantly increased in Intervention by 31% (B = 30.7, 95%CI [25.7 to 35.8]), 26% (B = 25.8, 95%CI [19.4 to 32.2]) and 34% (B = 33.9, 95%CI [28.4 to 39.4]) in pain, agitation/sedation and delirium, respectively. CONCLUSION: A multifaceted intervention including use of Facebook-groups was associated with improved guideline-adherence in four ICUs, as measured with process PAD-QIs of PAD assessment. Further research on use of social media to improve guideline adherence is warranted, particularly as social distancing impacts clinical education and training and new approaches are needed.

Utility of coagulation analyses to assess thromboprophylaxis with dalteparin in intensive care unit patients.

BACKGROUND: The aim of this study was to evaluate the utility of coagulation analyses to assess thromboprophylaxis with dalteparin in intensive care unit (ICU) patients. METHODS: Prospective observational study of ICU patients receiving dalteparin prophylaxis at Oslo University Hospital in Norway. Trough and peak antithrombin, protein C, anti-factor Xa activity (aFXa), d-dimer, thromboelastography, calibrated automated thrombogram and microparticles were analysed. Levels were compared in patients with and without venous thromboembolism (VTE), major bleeding, acute kidney injury (AKI) with use of renal replacement therapy (RRT) and variable dalteparin dose. RESULTS: Among 50 included patients (76% male, mean age 62 years) five (10%) developed VTE and eight (16%) major bleeding. Median through aFXa level was 0.03 (0.02-0.05) IU/mL, and 48 (96%) of patients were within and two (4%) above target range. Peak aFXa level was 0.21 (0.13-0.29) IU/mL, the number of patients below, within and above prophylactic range were 21 (42%), 25 (50%) and four (8%). Peak aFXa levels were similar in patients with and without VTE (0.18 vs 0.21 IU/L, P = .72), major bleeding (0.22 vs 0.21 IU/mL, P = .38) and AKI with RRT (0.18 vs 0.24, P = .13), but lower in patients receiving dalteparin 5000 IU od compared to 7500 IU od (0.19 vs 0.30 IU/mL, P < .01). CONCLUSIONS: Intensive care unit patients receiving dalteparin prophylaxis had half of patients within prophylactic peak aFXa target range. Peak aFXa levels was affected by administered dalteparin dose, but not presence of VTE, major bleeding or AKI with RRT.

Effect of Nurse-Led Consultations on Post-Traumatic Stress and Sense of Coherence in Discharged ICU Patients With Clinically Relevant Post-Traumatic Stress Symptoms-A Randomized Controlled Trial.

OBJECTIVES: To investigate the effect of nurse-led consultations on reducing post-traumatic stress symptoms and increasing sense of coherence in discharged ICU patients with clinically relevant post-traumatic stress symptoms and to identify variables associated with symptoms 12 months later. DESIGN: A pragmatic nonblinded randomized controlled trial. SETTINGS: Five surgical and medical ICUs at Oslo University Hospital. PATIENTS: Adult patients treated in the ICU greater than or equal to 24 hours were screened with Post-Traumatic Stress Scale 10 intensive part B after ICU discharge. Those scoring greater than or equal to 25 were included in the study. INTERVENTION: Patients randomized to intervention group were offered three nurse-led consultations within 2 months, and patients in the control group received standard care. MEASUREMENTS AND MAIN RESULTS: Sense of Coherence Scale 13 and Post-Traumatic Stress Scale 10 intensive part B were completed after inclusion, and reevaluated after 3, 6, and 12 months. Linear mixed model for repeated measures and linear regression analyses were performed. Among 523 screened patients, 111 and 113 were randomized to intervention group and control group, respectively. Mean Post-Traumatic Stress Scale 10 intensive part B score was 37 (±10) before randomization. No differences in post-traumatic stress symptoms or sense of coherence were found between intervention group versus control group, with a mean Post-Traumatic Stress Scale 10 intensive part B score 39 (95% CI, 37-41) versus 37 (95% CI, 35-39), 32 (95% CI, 28-35) versus 32 (95% CI, 29-35), 31 (95% CI, 28-34) versus 30 (95% CI, 27-33), and 31 (95% CI, 28-34) versus 29 (95% CI, 26-33) at baseline, 3, 6, and 12 months, respectively. There was a significantly reduced Post-Traumatic Stress Scale 10 intensive part B score for both groups during the year (p = 0.001). Low sense of coherence, pain, and previous psychiatric problems were associated with increased level of post-traumatic stress symptoms at 12 months. CONCLUSIONS: Nurse-led consultations did not reveal any significant effect on post-traumatic stress symptoms or sense of coherence after ICU discharge in patients with clinically relevant symptoms.

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.

Ventilatory support for hypoxaemic intensive care patients with COVID-19. / Ventilasjonsstøtte for hypoksemiske intensivpasienter med covid-19.

BACKGROUND: COVID-19 pneumonia can result in severe hypoxaemic respiratory failure that requires intensive medical care. We wished to describe COVID-19 intensive care patients who were treated with and without invasive ventilatory support. MATERIAL AND METHOD: The material was retrieved from the local quality register and comprises data on patients with COVID-19 admitted to the intensive care department at Oslo University Hospital Ullevål from 5 March-28 May 2020. The patients were categorised in three groups on the basis of the treatment they received for respiratory failure (oxygen alone, supplemental non-invasive ventilation (NIV), and intubation/ventilator) and described using descriptive statistics. RESULTS: Of 165 hospitalised COVID-19 patients, a total of 26 (16 %) were treated in our intensive care department. Four of them had do-not-resuscitate-orders and were excluded. The 22 patients included in this study had an average age of 56 years (range 25 to 78 years); 17 (77 %) were men. Eleven patients received ventilator treatment, seven oxygen by mask, and four supplemental NIV. In the ventilator group, as of 28 May 2020 two had died, and the remainder had been discharged alive from the intensive care department, with one remaining hospitalised on a ward. All patients treated with oxygen and NIV were alive and had been discharged from hospital. INTERPRETATION: For many patients with COVID-19 respiratory failure and need for intensive care, increased oxygen and NIV are sufficient, but the need for intubation must be continuously assessed. More than 90 % of actively treated intensive care patients survived.

Use of social media for communicating about critical care topics: A Norwegian cross-sectional survey.

BACKGROUND: Social media (SoMe) might be an alternative platform for communicating critical care topics to implement evidence-based practice in the intensive care unit (ICU). This survey aims to describe ICU nurses' and physicians' use of SoMe in general, and their perception of using closed Facebook-groups for receiving content on critical care topics. METHODS: A cross-sectional, web-based, anonymous survey was distributed to ICU physicians and nurses in four ICUs in autumn 2017 via an email-campaign. Descriptive statistics with rates, percentages and median numeric rating scale (NRS) scores, interquartile ranges are presented. RESULTS: The response-rate was 64% (253/ 394) including 210 nurses and 43 physicians. Overall, 93% had a SoMe-profile, and 77% had a profile on more than one network site. Facebook was the most used social network site, with 87% having a profile. Totally, 68% were daily users, but more nurses used Facebook daily vs physicians (81% vs 60%, respectively, P = 0.006). Nurses were also more positive toward being members of closed Facebook-groups aimed to exchange content on critical care topics (median NRS 9 (6-10) vs 6 (3-9), respectively, P = 0.014). CONCLUSION: The majority of ICU nurses and physicians were active SoMe users, mainly for personal purposes, and Facebook was the most popular SoMe. Nurses used Facebook daily more frequent and were more positive toward content on critical care topics on Facebook than physicians. These findings might be relevant to customize future communication about critical care topics via SoMe.

Venous thromboembolism in the critically ill: A prospective observational study of occurrence, risk factors and outcome.

BACKGROUND: The aim of the study was to explore occurrence, risk factors and outcome of venous thromboembolism (VTE) in intensive care unit (ICU) patients. METHODS: Prospective observational study of ICU patients receiving thromboprophylaxis at Oslo University Hospital in Norway. Adult medical and surgical patients with ICU length of stay (LOS) longer than 48 hours were included. For detection of VTE, Doppler ultrasound screening of neck, upper and lower extremity veins was used, and computed tomography angiography when clinically indicated for any medical reason. RESULTS: Among 70 included patients, 79% were males and mean age was 62 (±12.1) years. All received thromboprophylaxis with dalteparin, and 44 (63%) used graduated compression stockings. VTE was found in 19 (27%) patients; deep vein thrombosis in 15 (21%) and pulmonary embolism in 4 (6%). Among the VTEs, 11 (58%) presented within the first 48 hours after admission, two (11%) were located in the lower limbs and five (26%) were symptomatic. Risk factors for VTE in multivariable analyses were malignancy, abdominal surgery and SAPS II score <41 with an AuROC (95% CI) of 0.72 (0.58-0.85, P = 0.01). Patients with and without VTE had comparable ICU LOS (13 vs 11 days, P = 0.27) and mortality (16% vs 20%, P = 0.72). CONCLUSION: Venous thromboembolism was observed in 27% of ICU patients receiving thromboprophylaxis. Factors associated with increased risk of VTE were malignancy, abdominal surgery and SAPS II score <41. Presence of VTE did not impact on patient outcome.

Comparison of three haemodynamic monitoring methods in comatose post cardiac arrest patients.

OBJECTIVES: Haemodynamic monitoring during post arrest care is important to optimise treatment. We compared stroke volume measured by minimally-invasive monitoring devices with or without thermodilution calibration, and transthoracic echocardiography (TTE), and hypothesised that thermodilution calibration would give stroke volume index (SVI) more in agreement with TTE during targeted temperature management (TTM). DESIGN: Comatose out-of-hospital cardiac arrest survivors receiving TTM (33 °C for 24 hrs) underwent haemodynamic monitoring with arterial pulse contour analyses with (PiCCO2®) and without (FloTrac®/Vigileo® monitor®) transpulmonary thermodilution calibration. Haemodynamic parameters were collected simultaneously every fourth hour during TTM (hypothermia) and (normothermia). SVI was measured with TTE during hypothermia and normothermia. Bland-Altman analyses were used for determination of SVI bias (±1SD). RESULTS: Twenty-six patients were included, of whom 77% had initial shockable rhythm and 52% discharged with good outcome. SVI (bias ±2SD) between PiCCO (after thermodilution calibration) vs FloTrac/Vigileo, TTE vs FloTrac/Vigileo and TTE vs PiCCO were 1.4 (±25.8), -1.9 (±19.8), 0.06 (±18.5) ml/m2 during hypothermia and 9.7 (±23.9), 1.0 (±17.4), -7.2 (±12.8) ml/m2 during normothermia. Continuous SVI measurements between PiCCO and FloTrac/Vigileo during hypothermia at reduced SVI (<35 ml/m2) revealed low bias and relatively narrow limits of agreement (0.5 ± 10.2 ml/m2). CONCLUSION: We found low bias, but relatively wide limits of agreement in SV with PiCCO, FloTrac/Vigileo and TTE during TTM treatment. The methods are not interchangeable. Precision was not improved by transpulmonary thermodilution calibration during hypothermia.

Urine biomarkers give early prediction of acute kidney injury and outcome after out-of-hospital cardiac arrest.

BACKGROUND: Post-resuscitation care after out-of-hospital cardiac arrest (OHCA) is challenging due to the threat of organ failure and difficult prognostication. Our aim was to examine whether urine biomarkers could give an early prediction of acute kidney injury (AKI) and outcome. METHODS: This was a prospective observational study of comatose OHCA patients at Oslo University Hospital Ullevål, Norway. Risk factors were clinical parameters and biomarkers measured in spot urine (cystatin C, neutrophil gelatinase-associated lipocalin (NGAL) and the product of tissue inhibitor of metalloproteinase 2 (TIMP-2) and insulin-like growth factor-binding protein 7 (IGFBP7)) at admission and day 3. Outcome variables were AKI within 3 days using the Kidney Disease Improving Global Outcomes definition, 6-month mortality, and poor neurological outcome (PNO) defined as cerebral performance category 3-5. RESULTS: Among 195 included patients (85 % males, mean age 60 years), 88 (45 %) died, 96 (49 %) had PNO, and 88 (45 %) developed AKI. In univariate analysis, increased urine cystatin C and NGAL concentration sampled at admission and day 3 were independent risk factors for AKI, mortality and PNO. Increased urine TIMP-2 × IGFBP7 levels was associated with AKI only at admission. In multivariate analyses combining clinical parameters and biomarker concentrations, the area under the receiver operating characteristics curve (AuROC) with 95 % confidence interval (CI) were 0.774 (0.700-0.848), 0.812 (0.751-0.873), and 0.819 (0.759-0.878) for AKI, mortality and PNO, respectively. CONCLUSIONS: In comatose OHCA patients, urine levels of cystatin C and NGAL at admission and day 3 were independent risk factors for AKI, 6-month mortality and PNO. TRIAL REGISTRATION: Clinicaltrials.gov NCT01239420 . Registered 10 November 2010.

Neurologic outcomes and postresuscitation care of patients with myoclonus following cardiac arrest.

OBJECTIVES: To evaluate the outcomes of cardiac arrest survivors with myoclonus receiving modern postresuscitation care. DESIGN: Retrospective review of registry data. SETTING: Cardiac arrest receiving centers in Europe and the United States from 2002 to 2012. PATIENTS: Two thousand five hundred thirty-two cardiac arrest survivors 18 years or older enrolled in the International Cardiac Arrest Registry. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Eighty-eight percent of patients underwent therapeutic hypothermia and 471 (18%) exhibited myoclonus. Patients with myoclonus had longer time to professional cardiopulmonary resuscitation (8.6 vs 7.0 min; p < 0.001) and total ischemic time (25.6 vs 22.3 min; p < 0.001) and less often presented with ventricular tachycardia/ventricular fibrillation, a witnessed arrest, or had bystander cardiopulmonary resuscitation. Electroencephalography demonstrated myoclonus with epileptiform activity in 209 of 374 (55%), including status epilepticus in 102 of 374 (27%). Good outcome (Cerebral Performance Category 1-2) at hospital discharge was noted in 9% of patients with myoclonus, less frequently in myoclonus with epileptiform activity (2% vs 15%; p < 0.001). Patients with myoclonus with good outcome were younger (53.7 vs 62.7 yr; p < 0.001), had more ventricular tachycardia/ventricular fibrillation (81% vs 46%; p < 0.001), shorter ischemic time (18.9 vs 26.4 min; p = 0.003), more witnessed arrests (91% vs 77%; p = 0.02), and fewer "do-not-resuscitate" orders (7% vs 78%; p < 0.001). Life support was withdrawn in 330 of 427 patients (78%) with myoclonus and poor outcome, due to neurological futility in 293 of 330 (89%), at 5 days (3-8 d) after resuscitation. With myoclonus and good outcome, median ICU length of stay was 8 days (5-11 d) and hospital length of stay was 14.5 days (9-22 d). CONCLUSIONS: Nine percent of cardiac arrest survivors with myoclonus after cardiac arrest had good functional outcomes, usually in patients without associated epileptiform activity and after prolonged hospitalization. Deaths occurred early and primarily after withdrawal of life support. It is uncertain whether prolonged care would yield a higher percentage of good outcomes, but myoclonus of itself should not be considered a sign of futility.

Association of gender to outcome after out-of-hospital cardiac arrest--a report from the International Cardiac Arrest Registry.

INTRODUCTION: Previous studies have suggested an effect of gender on outcome after out-of-hospital cardiac arrest (OHCA), but the results are conflicting. We aimed to investigate the association of gender to outcome, coronary angiography (CAG) and adverse events in OHCA survivors treated with mild induced hypothermia (MIH). METHODS: We performed a retrospective analysis of prospectively collected data from the International Cardiac Arrest Registry. Adult patients with a non-traumatic OHCA and treated with MIH were included. Good neurological outcome was defined as a cerebral performance category (CPC) of 1 or 2. RESULTS: A total of 1,667 patients, 472 women (28%) and 1,195 men (72%), met the inclusion criteria. Men were more likely to receive bystander cardiopulmonary resuscitation, have an initial shockable rhythm and to have a presumed cardiac cause of arrest. At hospital discharge, men had a higher survival rate (52% vs. 38%, P < 0.001) and more often a good neurological outcome (43% vs. 32%, P < 0.001) in the univariate analysis. When adjusting for baseline characteristics, male gender was associated with improved survival (OR 1.34, 95% CI 1.01 to 1.78) but no longer with neurological outcome (OR 1.24, 95% CI 0.92 to 1.67). Adverse events were common; women more often had hypokalemia, hypomagnesemia and bleeding requiring transfusion, while men had more pneumonia. In a subgroup analysis of patients with a presumed cardiac cause of arrest (n = 1,361), men more often had CAG performed on admission (58% vs. 50%, P = 0.02) but this discrepancy disappeared in an adjusted analysis. CONCLUSIONS: Gender differences exist regarding cause of arrest, adverse events and outcome. Male gender was independently associated with survival but not with neurological outcome.

Bradycardia during therapeutic hypothermia is associated with good neurologic outcome in comatose survivors of out-of-hospital cardiac arrest.

OBJECTIVE: Comatose patients resuscitated after out-of-hospital cardiac arrest receive therapeutic hypothermia. Bradycardia is frequent during therapeutic hypothermia, but its impact on outcome remains unclear. We explore a possible association between bradycardia during therapeutic hypothermia and neurologic outcome in comatose survivors of out-of-hospital cardiac arrest. DESIGN: Retrospective cohort study, from January 2009 to January 2011. SETTING: University hospital medical and cardiac ICUs. PATIENTS: One hundred eleven consecutive comatose out-of-hospital cardiac arrest patients treated with therapeutic hypothermia. INTERVENTIONS: Patients treated with standardized treatment protocol after cardiac arrest. MEASUREMENTS AND MAIN RESULTS: All out-of-hospital cardiac arrest patients' records were reviewed. Hemodynamic data were obtained every fourth hour during the first days. The patients were in temperature target range (32-34°C) 8 hours after out-of-hospital cardiac arrest and dichotomized into bradycardia and nonbradycardia groups depending on their actual heart rate less than or equal to 60 beats/min or more than 60 beats/min at that time. Primary endpoint was Cerebral Performance Category score at hospital discharge. More nonbradycardia group patients received epinephrine during resuscitation and epinephrine and norepinephrine in the early in-hospital period. They also had lower base excess at admission. Survival rate with favorable outcome was significantly higher in the bradycardia than the nonbradycardia group (60% vs 37%, respectively, p = 0.03). For further heart rate quantification, patients were divided into quartiles: less than or equal to 49 beats/min, 50-63 beats/min, 64-77 beats/min, and more than or equal to 78 beats/min, with respective proportions of patients with good outcome at discharge of 18 of 27 (67%), 14 of 25 (56%), 12 of 28 (43%), and 7 of 27 (26%) (p = 0.002). Patients in the lowest quartile had significantly better outcome than the higher groups (p = 0.027), whereas patients in the highest quartile had significantly worse outcome than the lower three groups (p = 0.013). CONCLUSIONS: Bradycardia during therapeutic hypothermia was associated with good neurologic outcome at hospital discharge. Our data indicate that bradycardia should not be aggressively treated in this period if mean arterial pressure, lactate clearance, and diuresis are maintained at acceptable levels. Studies, both experimental and clinical, are warranted.

Safety, feasibility, and outcomes of induced hypothermia therapy following in-hospital cardiac arrest-evaluation of a large prospective registry*.

OBJECTIVES: Despite a lack of randomized trials, practice guidelines recommend that mild induced hypothermia be considered for comatose survivors of in-hospital cardiac arrest. This study describes the safety, feasibility, and outcomes of mild induced hypothermia treatment following in-hospital cardiac arrest. DESIGN: Prospective, observational, registry-based study. SETTING: Forty-six critical care facilities in eight countries in Europe and the United States reporting in the Hypothermia Network Registry and the International Cardiac Arrest Registry. PATIENTS: A total of 663 patients with in-hospital cardiac arrest and treated with mild induced hypothermia were included between January 2004 and February 2012. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: A cerebral performance category of 1 or 2 was considered a good outcome. At hospital discharge 41% of patients had a good outcome. At median 6-month follow-up, 34% had a good outcome. Among in-hospital deaths, 52% were of cardiac causes and 44% of cerebral cause. A higher initial body temperature was associated with reduced odds of a good outcome (odds ratio, 0.79; 95% CI, 0.68-0.92). Adverse events were common; bleeding requiring transfusion (odds ratio, 0.56; 95% CI, 0.31-1.00) and sepsis (odds ratio, 0.52; 95% CI, 0.30-0.91) were associated with reduced odds for a good outcome. CONCLUSIONS: In this registry study of an in-hospital cardiac arrest population treated with mild induced hypothermia, we found a 41% good outcome at hospital discharge and 34% at follow-up. Infectious complications occurred in 43% of cases, and 11% of patients required a transfusion for bleeding. The majority of deaths were of cardiac origin.

Towards cardiopulmonary resuscitation without vasoactive drugs.

PURPOSE OF REVIEW: Whereas there is clear evidence for improved survival with cardiopulmonary resuscitation (CPR) and defibrillation during cardiac arrest management, there is today lacking evidence that any of the recommended and used drugs lead to any long-term benefit for the patients. In this review, we try to discuss our current view on why advanced life support (ALS) today can be performed without the use of drugs, and instead gain all focus on improving the tasks we know improve survival: CPR and defibrillation. RECENT FINDINGS: Previous and recent cardiac arrest drug studies have been reviewed. These are mostly consisting of retrospective register data, some experimental data and a few new randomized trials. The alternative drug-free ALS concept is also discussed with relevant studies. SUMMARY: There is currently no evidence to support any specific drugs during cardiac arrest. Good-quality CPR, early defibrillation and goal-directed postresuscitation care is more important. Healthcare systems should not prioritize implementation of unproven drugs before good quality of care can be documented. More drug studies are indeed required, and future research needs to incorporate better diagnostic tools to test more specific and tailored therapies that account for underlying causes and individual responsiveness.

Incidence, characteristics, and associated factors of pressure injuries acquired in intensive care units over a 12-month period: A secondary analysis of a quality improvement project.

OBJECTIVES: To determine the 12-month cumulative incidence, characteristics, and associated factors of pressure injuries acquired in Intensive Care Units. SETTING: Four intensive care units in a Norwegian University Hospital. RESEARCH METHODOLOGY: A prospective observational cohort study using data from daily skin inspections during a quality improvement project. We used descriptive statistics and logistic regression. Variables associated with the development of intensive care unit-acquired pressure injuries are presented with odds ratios (OR), and 95% confidence intervals. RESULTS: The 12-month cumulative incidence of patients (N = 594) developing intensive care unit-acquired pressure injuries was 29 % (172/594) for all categories and 16 % (95/594) when excluding category I pressure injuries (no skin loss). Cumulative incidence for patients acquiring medical device-related pressure injuries was 15 % (91/594) and 11 % (64/594) for category II or worse. Compression stockings (n = 51) and nasogastric tubes (n = 22) were the most frequent documented medical devices related to pressure injuries. Development of pressure injuries category II or worse was significantly associated with vasoactive drug infusions (OR 11.84, 95 % CI [1.59; 88.13]) and longer intensive care unit length of stay (OR 1.06, 95 % CI [1.04; 1.08]). CONCLUSION: The 12-month cumulative incidence of intensive care unit-acquired pressure injuries was relatively high when category I pressure injuries were included, but comparable to other studies when category I was excluded. Some medical device-related pressure injuries were surprisingly frequent, and these may be prevented. However, associated factors of developing pressure injuries were present and deemed non-modifiable. IMPLICATIONS FOR CLINICAL PRACTICE: Awareness about pressure injury prevention is needed in the intensive care unit considering high incidences. Nurses can detect category I pressure injuries early, which may be reversed. Our findings show several factors that clinicians can control to reduce the risk of pressure injuries in the intensive care unit.

Effects of mild hypercapnia on myocardial injury after out-of-hospital cardiac arrest. A sub-study of the TAME trial.

PURPOSE: Mild hypercapnia did not improve neurological outcomes for resuscitated out-of-hospital cardiac arrest (OHCA) patients in the Targeted Therapeutic Mild Hypercapnia After Resuscitated Cardiac Arrest (TAME) trial. However, the effects of hypercapnic acidosis on myocardial injury in patients with cardiac arrest is unexplored. We investigated whether mild hypercapnia compared to normocapnia, following emergency coronary intervention, increased myocardial injury in comatose OHCA-patients with AMI. METHODS: Single-centre, prospective, pre-planned sub-study of the TAME trial. Patients were randomised to targeted mild hypercapnia (PaCO2 = 6.7-7.3 kPa) or normocapnia (PaCO2 = 4.7-6.0 kPa) for 24 h. Myocardial injury was assessed with high-sensitive cardiac troponin T (hs-cTnT) measured at baseline, 24, 48 and 72 h. Haemodynamics were assessed with right heart catheterisation and blood-gas analyses every 4th hour for 48 h. RESULTS: We included 125 OHCA-patients. 57 (46%) had an AMI, with 31 and 26 patients randomised to hypercapnia and normocapnia, respectively. Median peak hs-cTnT in AMI-patients was 58% lower in the hypercapnia-group: 2136 (IQR: 861-4462) versus 5165 ng/L (IQR: 2773-7519), p = 0.007. Lower average area under the hs-cTnT curve was observed in the hypercapnia-group: 2353 (95% CI 1388-3319) versus 4953 ng/L (95% CI 3566-6341), P-group = 0.002. Hypercapnia was associated with increased cardiac power output (CPO) and lower lactate levels in patients with AMI (P-group < 0.05). hs-cTnT, lactate and CPO were not significantly different between intervention groups in OHCA-patients without AMI (p > 0.05). CONCLUSIONS: Mild hypercapnia was not associated with increased myocardial injury in resuscitated OHCA-patients. In AMI-patients, mild hypercapnia was associated with lower hs-cTnT and lactate, and improved cardiac performance. TRIAL REGISTRATION NUMBER: NCT03114033.

Cerebral perfusion and metabolism with mild hypercapnia vs. normocapnia in a porcine post cardiac arrest model with and without targeted temperature management.

Aim: To determine whether targeting mild hypercapnia (PaCO2 7 kPa) would yield improved cerebral blood flow and metabolism compared to normocapnia (PaCO2 5 kPa) with and without targeted temperature management to 33 °C (TTM33) in a porcine post-cardiac arrest model. Methods: 39 pigs were resuscitated after 10 minutes of cardiac arrest using cardiopulmonary bypass and randomised to TTM33 or no-TTM, and hypercapnia or normocapnia. TTM33 was managed with intravasal cooling. Animals were stabilized for 30 minutes followed by a two-hour intervention period. Hemodynamic parameters were measured continuously, and neuromonitoring included intracranial pressure (ICP), pressure reactivity index, cerebral blood flow, brain-tissue pCO2 and microdialysis. Measurements are reported as proportion of baseline, and areas under the curve during the 120 min intervention period were compared. Results: Hypercapnia increased cerebral flow in both TTM33 and no-TTM groups, but also increased ICP (199% vs. 183% of baseline, p = 0.018) and reduced cerebral perfusion pressure (70% vs. 84% of baseline, p < 0.001) in no-TTM animals. Cerebral lactate (196% vs. 297% of baseline, p < 0.001), pyruvate (118% vs. 152% of baseline, p < 0.001), glycerol and lactate/pyruvate ratios were lower with hypercapnia in the TTM33 group, but only pyruvate (133% vs. 150% of baseline, p = 0.002) was lower with hypercapnia among no-TTM animals. Conclusion: In this porcine post-arrest model, hypercapnia led to increased cerebral flow both with and without hypothermia, but also increased ICP and reduced cerebral perfusion pressure in no-TTM animals. The effects of hypercapnia were different with and without TTM.(Institutional protocol number: FOTS, id 14931).