Intensive Care Unit Course Research Articles

The intensive care unit course and outcome in acute-on-chronic liver failure are comparable to other populations

Acute-on-chronic liver failure (ACLF) is characterized by acute decompensation of cirrhosis, development of organ failure and high short-term mortality. Whether the outcome in patients admitted to the intensive care unit (ICU) with ACLF differs from other ICU populations is unknown. We compared the clinical course and host response in ICU patients with or without ACLF, matched for baseline severity of illness scores and characteristics. From the large prospective EPaNIC randomized control trial database (n = 4,640), 133 patients were identified with cirrhosis of whom 71 fulfilled the Chronic Liver Failure Consortium criteria for ACLF. These patients were matched for type and severity of illness and demographics to 71 septic and 71 medical ICU patients from the same database without chronic liver disease. Clinical, biochemical and outcome parameters were compared in this cohort study of 213 patients. In a subset of 100 patients, day 1 serum cytokines were quantified. The outcome of ACLF, when compared to septic or medical ICU patients, matched for baseline parameters of illness severity, was similar regarding length of ICU stay, development of new infections, organ failure and septic shock. ICU, hospital and 90-day mortality were similar between the groups. C-reactive protein and platelet levels were lower in patients with ACLF throughout the first week. Cytokines, including IL-10, IL-1β, IL-6, and IL-8, were similarly elevated in ACLF and septic ICU patients on day 1. However, TNF-α levels were higher in patients with ACLF. Patients with ACLF admitted to the ICU showed comparable clinical and ICU outcomes as ICU patients without chronic liver disease, but with similar baseline severity of illness characteristics. This suggests that ICU admission criteria should not be different in ACLF populations. Liver function may abruptly deteriorate in patients with chronic liver disease with cirrhosis, often resulting in these patients being admitted to an intensive care unit (ICU) with organ failure. Previous studies have indicated that this sudden deterioration, called acute-on-chronic liver failure is associated with very high mortality rates, which often resulted in deferred ICU care because of a perception of futility. Our study now shows that the ICU course and outcome are not different when patients with acute-on-chronic liver failure are compared to other ICU patients matched for severity of illness. This demonstrates that patients with acute-on-chronic liver failure deserve the same ICU care given to other ICU populations.

A novel NKX3-2 mutation associated with perinatal lethal phenotype of spondylo-megaepiphyseal-metaphyseal dysplasia in a neonate

Spondylo-megaepiphyseal-metaphyseal dysplasia (SMMD) is an autosomal recessive skeletal dysplasia, characterized by disproportionate short stature with a short and stiff neck and trunk. SMMD is caused by inactivating mutations in NKX3-2, which encodes a homeobox-containing protein. Because of the rarity of the disorder, the diagnostic feature has not been fully established yet. We describe an affected newborn with dysmorphic facial features and severe short trunk. The patient required immediate intubation at the delivery room and duodenal atresia was detected during his course in neonatal intensive care unit. Skeletal survey revealed total absence of the ossification of the vertebral bodies, pubis, and ischia. Mainly the femora was short and broad with mild flaring of the metaphyses. The downward sloping or tented appearance of the ribs was distinctive. A diagnosis of SMMD was made on clinical and radiological grounds. Molecular analysis revealed homozygosity for a novel mutation, c.507-508delCA (p.Gly171Cysfs*55) in exon 2 of NKX3-2. The patient was operated on postnatal day 7 for duodenal atresia. In the post-operative period he developed sepsis and respiratory failure and he died on postnatal day 14. Although no neuroradiologic imaging could be performed, the findings of clubfoot, neuromuscular respiratory insufficiency requiring invasive mechanical ventilation and downward sloping or tented appearance of the ribs were suggestive of very early cervical cord compression leading to perinatal mortality. To our knowledge this patient yet represents one of the most severe postnatal phenotypes of SMMD.

Clinical outcomes of patients undergoing primary percutaneous coronary intervention for acute myocardial infarction requiring the intensive care unit

BackgroundOutcomes for patients with ST-segment elevation myocardial infarction continue to improve, largely due to timely provision of reperfusion by primary percutaneous coronary intervention (PPCI). However, despite prompt and successful PPCI, a small proportion of patients require ventilatory and hemodynamic support in an intensive care unit (ICU). The outcome of these patients remains poorly defined.MethodsA retrospective review of all consecutive admissions post-PPCI pathway to a single ICU between January 2009 and May 2014 was performed. Patients were analysed based on survival and indication for admission. Preadmission characteristics and ICU course were reviewed. Univariate and multivariable regression analysis was performed to determine predictors of outcome.ResultsDuring the study period 2902 PPCI were performed and 101 patients were admitted to ICU following PPCI (incidence 3.5%). ICU mortality post-PPCI was 33.7%. Pre-ICU admission factors in a multivariable logistic regression analysis associated with increased mortality included requirement for an intra-aortic balloon pump and a high SOFA score.ConclusionsICU admission post PPCI is associated with significant mortality. Mortality was related to high presenting SOFA score and need for IABP. These results provide important prognostic information and an acceptable method for risk-stratifying patients with acute myocardial infarction requiring intensive care.

Management of Acute Respiratory Failure in the Patient with Sepsis or Septic Shock.

Sepsis and septic shock are each commonly accompanied by acute respiratory failure and the need for invasive as well as non-invasive ventilation throughout a patient's intensive care unit course. We explore the underpinnings of acute respiratory failure of pulmonary as well as non-pulmonary origin in the context of invasive and non-invasive management approaches. Both pharmacologic and non-pharmacologic adjuncts to ventilatory and oxygenation support are highlighted as well. Finally, rescue modalities are positioned within the intensivist's armamentarium for global care of support of the critically ill or injured patient with sepsis or septic shock.

Foodborne botulism due to ingestion of home-canned green beans: two case reports

BackgroundFoodborne botulism is a life-threatening, rapidly progressive disease. It has an incidence of less than 10 cases per year in Germany and mostly affects several previously healthy people at the same time. The only specific treatment is the administration of botulism antitoxin. According to the German guidelines administration of antitoxin is recommended only in the first 24 hours after oral ingestion of the toxin.Case presentationA 47-year-old white woman and her 51-year-old white husband presented with paralysis of multiple cranial nerves and rapidly descending paralysis approximately 72 hours after ingestion of home-canned beans. The disease was complicated by autonomic changes like hypertension, febrile temperatures, and a paralytic ileus. The diagnosis was confirmed by identification of botulinum neurotoxin type A in the serum of the woman. In accordance with the German guidelines, antitoxin was not given due to the prolonged time interval at diagnosis. Both patients had a long intensive care unit course requiring ventilation for approximately 5 months. Finally they recovered completely.ConclusionsA full recovery from foodborne botulism is possible even in patients with intensive care lasting several months. There are only case reports indicating that administration of antitoxin may shorten the course of the disease, even if given later than 24 hours after intoxication. Due to the rarity of the disease and its rapid course there are no randomized controlled trials. Thus, evidence of the superiority of this treatment is lacking. However, the prevailing view according to the German guidelines to administer antitoxin only within 24 hours after ingestion of the toxin should be questioned in the case of progression of the disease with proof of remaining toxin in the blood.

Comparison between Critical-Care Pain Observation Tool and physiologic indicators for pain assessment in the critically ill, mechanically ventilated adult patients.

Background and Objectives:Pain assessment of nonverbal, critically ill patients continues to present a challenge in Intensive Care Unit (ICU). The Critical-Care Pain Observation Tool (CPOT) rates critically ill patients’ pain based on clinical observation. In the present study, the accuracy of CPOT was compared with physiological indicators of pain in mechanically ventilated, critically ill patients.Methods:This quantitative prospective observational study was conducted to assess pain in the critically ill, mechanically ventilated patients in comparison to physiologic indicators such as blood pressure and heart rate. A repeated measures design was chosen, and a sample size of 180 was taken from 60 patients with sepsis, acute exacerbations of chronic obstructive pulmonary disease, community-acquired pneumonia, and postsurgical patients in the ICU. The two painful procedures chosen were tracheal suction and patient positioning. The data were collected at rest, at tracheal suctioning, 20 min later at positioning of the patient, and final reading 20 min later. Three testing periods, each including 4 assessments for a total of 12 pain assessments with sixty patients, were completed during each patient's ICU course. A total of six assessments were done with the patient at rest and three each with pain stimulus of tracheal suctioning and patient positioning.Results:There was a significant increase in both hemodynamic variables (systolic blood pressure and diastolic blood pressure) during painful procedures except for the heart rate during positioning. The correlation between the CPOT and Ramsay scale was negative and significant.Conclusions:The present study provides evidence that the CPOT has good psychometric properties. It might prove useful for pain assessment in uncommunicative critically ill patients.

Pain assessment in the critically ill mechanically ventilated adult patients: Comparison between skin conductance algesimeter index and physiologic indicators.

Background and Objectives:Critically ill patients are unable to communicate effectively, so it is difficult to assess their pain and analgesic requirement. Skin conductance algesimeter (SCA) index is a device that primarily measures changes in skin conductance real time to assess pain.Methods:We planned this quantitative prospective observational study to assess pain in the critically ill mechanically ventilated patients in comparison to physiologic indicators such as blood pressure and heart rate. A repeated measures design was chosen, and a sample size of 180 was taken from 60 patients with sepsis, acute exacerbations of chronic obstructive pulmonary disease, community-acquired pneumonia, and postsurgical patients in the Intensive Care Unit (ICU). The two painful procedures chosen were tracheal suction and patient positioning. The data were collected at rest, at tracheal suctioning, 20 min later at positioning of the patient, and final reading 20 min later. Three testing periods, each including 4 assessments for a total of 12 pain assessments with sixty patients, were completed during each patient's ICU course. A total of six assessments were done with the patient at rest and three each with pain stimulus of tracheal suctioning and patient positioning.Results:There was a significant increase in both hemodynamic variables during painful procedures except for the heart rate during positioning. The correlation between the SCA index and Ramsay scale was negative and significant.Conclusions:This instrument might prove useful to measure pain in uncommunicative critically ill patients and to evaluate the effectiveness of analgesic treatment and adapt it.

Clinical Profile, Intensive Care Unit Course, and Outcome of Patients Admitted in Intensive Care Unit with Chikungunya.

Objective:Chikungunya is generally a mild disease, rarely requiring Intensive Care Unit (ICU) admission. However, certain populations may develop organ dysfunction necessitating ICU admission. The purpose of the study was to assess the clinical profile and course of chikungunya patients admitted to the ICU, and to ascertain factors linked with poor outcome.Methods:All patients with chikungunya admitted to ICU were included in the study. Admission Acute Physiology and Chronic Health Evaluation (APACHE) II score and sequential organ failure assessment (SOFA) score were calculated. Primary outcome measured was 28-day mortality and secondary outcomes measured were length of hospital and ICU stay and the need for vasopressor support, renal replacement therapy (RRT), and mechanical ventilation (MV). Logistic regression analysis was performed to identify factors predicting mortality.Results:The most common complaints were fever (96.67%) and altered sensorium (56.67%). Mean admission APACHE II and SOFA scores were 17.28 ± 7.9 and 7.15 ± 4.2, respectively. Fifty-one patients had underlying comorbidities. Vasopressors were required by 46.76%; RRT by 26.67%, and MV by 58.33%, respectively. The 28-day mortality was 36.67%. High APACHE II score (odds ratio: 1.535; 95% confidence interval: 1.053–2.237; P = 0.026) and need for dialysis (odds ratio: 833.221; 95% confidence interval: 1.853–374,664.825; P = 0.031) could independently predict mortality.Conclusions:Patients with chikungunya fever may require ICU admission for organ failure. They are generally elderly patients with underlying comorbidities. Despite aggressive resuscitation and organ support, these patients are at high risk of death. Admission APACHE II score and need for dialysis may predict patients at higher risk of death.

Intensive care unit patients with lower respiratory tract nosocomial infections: the ENIRRIs project.

The clinical course of intensive care unit (ICU) patients may be complicated by a large spectrum of lower respiratory tract infections (LRTI), defined by specific epidemiological, clinical and microbiological aspects.A European network for ICU-related respiratory infections (ENIRRIs), supported by the European Respiratory Society, has been recently established, with the aim at studying all respiratory tract infective episodes except community-acquired ones. A multicentre, observational study is in progress, enrolling more than 1000 patients fulfilling the clinical, biochemical and radiological findings consistent with a LRTI. This article describes the methodology of this study. A specific interest is the clinical impact of non-ICU-acquired nosocomial pneumonia requiring ICU admission, non-ventilator-associated LRTIs occurring in the ICU, and ventilator-associated tracheobronchitis. The clinical meaning of microbiologically negative infectious episodes and specific details on antibiotic administration modalities, dosages and duration are also highlighted. Recently released guidelines address many unresolved questions which might be answered by such large-scale observational investigations. In light of the paucity of data regarding such topics, new interesting information is expected to be obtained from our network research activities, contributing to optimisation of care for critically ill patients in the ICU.

A Hybrid Simulation-Based Pre-Professional Physical Therapist Intensive Care Unit Course: Erratum

A Hybrid Simulation-Based Pre-Professional Physical Therapist Intensive Care Unit Course: Erratum

A Hybrid Simulation-Based Pre-Professional Physical Therapist Intensive Care Unit Course

Background and Purpose: There is demand for physical therapists to practice in intensive care units (ICUs); however, many physical therapists lack the specialized knowledge and skills to provide these services. Immersive simulation is an ideal instructional design strategy for learning ICU rehabilitation skills because simulation provides safe, low-risk environments to master high-risk interventions. This case report describes an elective hybrid pre-professional physical therapist course that incorporates simulation-based learning experiences (SBLEs) with clinical mentoring to prepare students for formal ICU internships. Case Description: Eight final-year physical therapist students participated in this course. The goal of this course was to facilitate the development of students interested in specializing in ICU practice. Course objectives included acquiring the knowledge, communication skills, and clinical skills essential for participating in mentored clinical ICU internships. Educational strategies included lectures, SBLEs, and clinical ICU experiences. Outcomes: All students successfully completed the course, earned the American Heart Association Advance Cardiac Life Support certification, and were identified by ICU physical therapist clinical instructors as ready for formal ICU internships. Stakeholders positively reviewed the course. One year following the course, 4 of 8 students were employed in acute care and/or ICU settings. Discussion: This elective course used a combination of lectures, SBLEs, and clinical experiences to successfully prepare physical therapist students for mentored ICU internships and employment in acute and critical care practice settings. More research is required to evaluate the simulation pedagogy (structure, types of cases, and time in simulation) and criteria for determining student competence level for ICU practice.

Early Palliative Care Reduces End-of-Life Intensive Care Unit (ICU) Use but Not ICU Course in Patients with Advanced Cancer.

Early palliative care for advanced cancer patients improves quality of life and survival, but less is known about its effect on intensive care unit (ICU) use at the end of life. This analysis assessed the effect of a comprehensive early palliative care program on ICU use and other outcomes among patients with advanced cancer. A retrospective cohort of patients with advanced cancer enrolled in an early palliative care program (n = 275) was compared with a concurrent control group of patients receiving standard care (n = 195) during the same time period by using multivariable logistic regression analysis. The multidisciplinary outpatient palliative care program used early end-of-life care planning, weekly interdisciplinary meetings to discuss patient status, and patient-reported outcomes assessment integrated within the electronic health record. Patients in the control group had statistically significantly higher likelihood of ICU admission at the end of life (odds ratios [ORs]: last 6 months, 3.07; last month, 3.59; terminal admission, 4.69), higher likelihood of death in the hospital (OR, 4.14) or ICU (OR, 5.57), and lower likelihood of hospice enrollment (OR, 0.13). Use of chemotherapy or radiation did not significantly differ between groups, nor did length of ICU stay, code status, ICU procedures (other than cardiopulmonary resuscitation), disposition location, and outcomes after ICU admission. Early palliative care significantly reduced ICU use at the end of life but did not change ICU events. This study supports early initiation of palliative care for advanced cancer patients before hospitalizations and intensive care. The Oncologist 2017;22:318-323 IMPLICATIONS FOR PRACTICE: Palliative care has shown clear benefit in quality of life and survival in advanced cancer patients, but less is known about its effect on intensive care. This retrospective cohort study at a university hospital showed that in the last 6 months of life, palliative care significantly reduced intensive care unit (ICU) and hospital admissions, reduced deaths in the hospital, and increased hospice enrollment. It did not, however, change patients' experiences within the ICU, such as number of procedures, code status, length of stay, or disposition. The findings further support that palliative care exerts its benefit before, rather than during, the ICU setting.

Deep vein thrombosis in a neurosurgical intensive care: An institutional experience

The aim of the following study is to study the incidence, clinical presentations, risk factors and management modalities in deep vein thrombosis (DVT) affecting patients undergoing cranial or spinal surgery in neurosurgical intensive care unit (ICU). Retrospective review of patients who developed DVT in the course of prolonged ICU stay (>7 days), following cranial or spinal surgery between September 2009 and November 2011. A total of 260 patients were reviewed in the study period between September 2009 and November 2011. Eight patients (3.7%) were diagnosed with DVT by color Doppler during this period. The average age of the group was 47 years (range 36-70 years). 3 patients had DVT limited to the popliteal vein, 2 patients had an extension to the femoral vein and in 3 patients to the common iliac vein. Risk factors associated with DVT seen in our series included poor neurological status with immobilization in 2 patients, delayed ambulation in 3 patients, surgery in the prone position in 3 patients and old age in 1 patient. Prolong intraoperative time; post-operative long immobilization and old age are significant contributory risk factor for DVT. However, this complication can be averted by prophylactic measures like compression stockings and intermittent compression devices used in conjunction with low molecular weight heparin and low-dose unfractionated heparin.

Brainstem shape is affected by clinical course in the neonatal intensive care unit.

The brainstem, critical for motor function, autonomic regulation, and many neurocognitive functions, undergoes rapid development from the third trimester. Accordingly, we hypothesized it would be vulnerable to insult during this period, and that a difficult clinical course in the neonatal intensive care unit (NICU) would affect development, and be reflected through atypical shape. Our study population consisted of 66 neonates – all inpatients from the NICU at Victoria Hospital, London Health Sciences Centre, ON, Canada, of which 45 entered the final analysis. The cohort varied in gestational age (GA) and ranged from neurologically healthy to severely brain-injured. Structural MRI was used to quantify brainstem shape at term-equivalent age. From these images, brainstems were semi-automatically segmented and co-registered across subjects. The anterior-posterior dimensions on a sagittal maximum intensity projection were used as the basis for shape comparison. Factor analysis was used to summarize variation in shape and in clinical course to determine three shape factors and three clinical factors, and their relationship assessed using correlation. A factor driven by low GA and associated complications correlated with alterations in the posterior medulla, while a factor driven by complications independent of GA correlated with alterations in the midbrain. Additionally, single clinical measures most representative of their respective clinical factor (days in NICU; days on ventilation) predicted the changes. Thus, different clinical courses in the NICU may have different effects on the shape of the brainstem, and may mediate some of the distinct neurodevelopmental profiles observed in premature and brain-injured neonates.

Comparison of Dexmedetomidine and Midazolam for Sedation in Mechanically Ventilated Patients Guided by Bispectral Index and Sedation-Agitation Scale.

Background:Mechanical ventilation and sedation are inextricably linked components of critical care that represent, what we do for the patients during their vulnerable course in Intensive Care Unit (ICU).Aims:The aim of this study is to compare the efficacy and safety of midazolam and dexmedetomidine in patients on mechanical ventilator with the help of Bispectral Index (BIS) monitoring and correlation of BIS with Sedation-Agitation Scale (SAS).Settings and Design:Prospective, observational, and comparative study.Materials and Methods:In this study, recruited patients were allocated into two groups of 14 patients each. Group A and Group B patients received injection dexmedetomidine and injection Midazolam, respectively. Hemodynamic parameters, time of extubation, duration of mechanical ventilation, and mortality were compared between two groups.Statistical Analysis:Mean and the standard deviation were calculated. Test of analysis between two groups was performed using unpaired t-test. We applied correlation technique, that is, Pearson product-moment correlation coefficient (r) to assess the correlation between BIS and SAS. It varies from + 1–0 to −1.Results:Heart rate and blood pressure were more stable and less in Group A than Group B. Duration of mechanical ventilation was found extremely significant between Group A (77.86 ± 5.71 h) and Group B (95.64 ± 17.00 h) (P = 0.001). There was significant difference found in the time of extubation between Group A (21 ± 6.44 h) and Group B (30.4 ± 10.62 h) P = 0.008.Conclusion:It is concluded in this study that sedation with dexmedetomidine resulted in quick extubation and decreased the duration of mechanical ventilation in comparison to midazolam in ICU patients. There was found moderate to high correlation between BIS index and SAS.

Assessment of different folic acid supplementation doses for low-birth-weight infants.

The adequacy of 50 mcg folic acid supplementation given to low-birth-weight babies was investigated. The folate levels of the mothers and infants, and breastmilk, and the optimum dose for folic acid supplementation were also investigated. After obtaining blood from 141 low-birth-weight infants on the 1st day of life for serum and red cell folate levels, the infants were randomly allocated into three groups according to the folic acid supplement dose. Forty-six infants were given 25 μg/d folic acid, 39 were given 50 μg/d folic acid, and 44 were given 75 μg/d folic acid. Folic acid could not be given to 12 infants. Follow-up blood samples were obtained at the end of folic acid supplementation. Maternal samples for red cell and serum folate levels and breast milk folate levels were obtained within the first 48 hours and the samples for measuring breastmilk folate level were obtained on the 3rd day postnatally. The feeding modes of the infants, maternal folic acid intake, and details of neonate intensive care unit course were recorded. The mean birth weight and gestational age of the infants were found as 1788.2±478.4 g and 33.5±2.9 weeks, respectively. The mean serum and red cell folate levels on admission were found as 21.2±12.2 ng/mL and 922.7±460.7 ng/mL, respectively. The mean maternal serum and red cell folate levels and the mean breast milk folate levels were found as 12.3±7.5 ng/mL, 845.5±301.4 ng/mL, and 30.6±33.0 ng/m, respectively. The breast milk folate levels of mothers who were supplemented with folic acid during pregnancy were significantly higher compared with mothers who were not supplemented with folic acid (p<0.001). Infants who were supplemented with folic acid had higher follow-up serum folate levels compared with the basal level in all groups, but there was no statistically significant difference between the groups. This study showed that the folic acid doses of 25, 50, and 75 μcg/d affected serum folate levels similarly. We can conclude that the dose of 25 μcg/d is adequate for low-birth-weight infants.

Rheumatological conditions in critical care

### Key points Traditionally thought of as disorders of the joints and musculoskeletal system, rheumatological diseases (RDs) can affect any organ system and many have debilitating systemic effects. These conditions, and the sequelae of the immunosuppressive medications used to treat them, can also cause catastrophic complications and can pose many diagnostic and therapeutic challenges to the intensivist (Table 1). While RDs are relatively common in the general population, they remain a comparatively rare cause of intensive care admission. However, such patients have a reported intensive care unit (ICU) mortality of 15–55% and poor long-term outcomes.1 View this table: Table 1 Why rheumatological diseases are important The most common rheumatological causes for admission to the ICU include:2 In reality, these presentations tend to overlap, further complicating the ICU course. A common scenario, for example, would be attempting to differentiate between sepsis and a flare-up of underlying inflammatory disease. This can be a major diagnostic challenge, given that the management of infection differs substantially from control of the underlying disease. Early consultation with a rheumatologist is therefore paramount and treatment of both infection and the …

Admission Variables Associated with a Favorable Outcome after Mild Traumatic Brain Injury

Consensus is lacking for ideal management of mild traumatic brain injury (mTBI) with intracranial hemorrhage (ICH). Patients are often monitored in the intensive care unit (ICU) without additional interventions. We sought to identify admission variables associated with a favorable outcome (ICU admission for 24 hours, no neurosurgical interventions, no complications or mortality) to divert these patients to a non-ICU setting in the future. We reviewed all patients with mTBI [Glasgow Coma Scale (GCS) = 13-15] and concomitant ICH between July 1, 2012, and June 30, 2015. Variables collected included demographics, vital signs, neurologic examination, imaging results, ICU course, mortality, and disposition. Of 201 patients, 78 (39%) had a favorable outcome. On univariate analysis, these patients were younger, more often had an isolated subarachnoid hemorrhage, and were more likely to have a GCS of 15 at admission. On multivariate regression analysis, after controlling for admission blood pressure, time to CT scan, and Marshall Score, age <55, GCS of 15 on arrival to the ICU, and isolated subarachnoid hemorrhage remained independent predictors of a favorable outcome. Patients meeting these criteria after mTBI with ICH likely do not require ICU-level care.

A promising marker in early diagnosis of septic acute kidney injury of critically ill patients: urine insulin like growth factor binding protein-7

Aim: An ideal biomarker for early diagnosis of septic acute kidney injury (AKI) should reflect renal stress or damage at initiation point, at cellular level. The aim of this study was to assess the role of a urinary cell cycle arrest marker, insulin-like growth factor-binding protein 7 (IGFBP7) in early diagnosis of septic AKI in adult critical care patients.Methods: This was a single-center prospective cohort study. Patients without AKI, admitted to a medical intensive care unit (ICU) between January 2010 and March 2013, were included. According to ‘sepsis’ and ‘AKI’ development during their ICU stay, they were grouped as ‘sepsis-non AKI’, ‘sepsis-AKI’ and ‘non-sepsis-non AKI (control)’. Among these groups, urine IGFBP7 was studied and compared with Human ELISA Kit/96 Test/USCNK® first on admission and then on daily collected serial urine samples.Results: A total of 118 patients formed the cohort; 52 in sepsis-non AKI, 43 in sepsis-AKI, 23 in control group. Admission urine IGFBP7 predicted septic AKI development with 72% sensitivity and 70% specificity for a threshold level of 2.5 ng/mL with an area under the receiver operating characteristics curve (AUC) of 0.79 (95% CI: 0.70–0.88). No impact of sepsis was observed on urine IGFBP7 levels in the absence of AKI. In the septic AKI group urine IGFBP7 levels continuously increased up to the day of AKI development and high levels were suspended for 10 days further.Conclusion: Admission urine IGFBP7 levels and following its course in ICUs can be used as a promising new biomarker for the early diagnosis of septic AKI development without being affected by sepsis itself.

Timing of onset and burden of persistent critical illness in Australia and New Zealand: a retrospective, population-based, observational study

Critical care physicians recognise persistent critical illness as a specific syndrome, yet few data exist for the timing of the transition from acute to persistent critical illness. Defining the onset of persistent critical illness as the time at which diagnosis and illness severity at intensive care unit (ICU) arrival no longer predict outcome better than do simple pre-ICU patient characteristics, we measured the timing of this onset at a population level in Australia and New Zealand, and the variation therein, and assessed the characteristics, burden of care, and hospital outcomes of patients with persistent critical illness. In this retrospective, population-based, observational study, we used data for ICU admission in Australia and New Zealand from the Australian and New Zealand Intensive Care Society Adult Patient Database. We included all patients older than 16 years of age admitted to a participating ICU. We excluded patients transferred from another hospital and those admitted to an ICU for palliative care or awaiting organ donation. The primary outcome was in-hospital mortality. Using statistical methods in evenly split development and validation samples for risk score development, we examined the ability of characteristics to predict in-hospital mortality. Between Jan, 2000, and Dec, 2014, we studied 1 028 235 critically ill patients from 182 ICUs across Australia and New Zealand. Among patients still in an ICU, admission diagnosis and physiological derangements, which accurately predicted outcome on admission (area under the receiver operating characteristics curve 0·898 [95% CI 0·897-0·899] in the validation cohort), progressively lost their predictive ability and no longer predicted outcome more accurately than did simple antecedent patient characteristics (eg, age, sex, or chronic health status) after 10 days in the ICU, thus empirically defining the onset of persistent critical illness. This transition occurred between day 7 and day 22 across diagnosis-based subgroups and between day 6 and day 15 across risk-of-death-based subgroups. Cases of persistent critical illness accounted for only 51 509 (5·0%) of the 1 028 235 patients admitted to an ICU, but for 1 029 345 (32·8%) of 3 138 432 ICU bed-days and 2 197 108 (14·7%) of 14 961 693 hospital bed-days. Overall, 12 625 (24·5%) of 51 509 patients with persistent critical illness died and only 23 968 (46·5%) of 51 509 were discharged home. Onset of persistent critical illness can be empirically measured at a population level. Patients with this condition consume vast resources, have high mortality, have much less chance of returning home than do typical ICU patients, and require dedicated future research. ICU clinicians should be aware that the risk of in-hospital mortality can change quickly over the first 2 weeks of an ICU course and be sure to incorporate such changes in their decision making and prognostication. None.