Electroencephalography

2019 ◽  
pp. 918-924
Author(s):  
Amy Z. Crepeau
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Mental Status ◽  
Clinical Examination ◽  
Critically Ill Patients ◽  
Altered Mental Status ◽  
Cerebral Function ◽  
Continuous Eeg ◽  
Special Expertise

Electroencephalography (EEG) in critically ill patients allows for monitoring of cerebral function when a clinical examination is limited because of altered mental status or coma. Continuous EEG (cEEG) has increasingly been used to monitor critically ill patients in the intensive care unit (ICU). Implementation of cEEG in the ICU presents a unique set of challenges, requiring special expertise and a multidisciplinary approach.

scholarly journals Negative Drift of Sedation Depth In Critically Ill Patients Receiving Constant Minimum Alveolar Concentration of Isoflurane, Sevoflurane, or Desflurane: A Randomized Controlled Trial

2021 ◽  
Author(s):  
Adrian Iustin Georgevici ◽  
Theodoros Kyprianou ◽  
Jennifer Herzog-Niescery ◽  
Livia Procopiuc ◽  
Sivakkanan Loganathan ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Linear Models ◽  
Minimum Alveolar Concentration ◽  
T Test ◽  
Surgical Intensive Care Unit ◽  
Continuous Eeg ◽  
Negative Drift

Abstract Background: Intensive care unit (ICU) physicians have extended the minimum alveolar concentration (MAC) to deliver and monitor long-term volatile sedation in critically ill patients. There is limited evidence of MAC’s reliability in controlling sedation depth in this setting. We hypothesized that sedation depth, measured by the electroencephalography (EEG)-derived Narcotrend-Index (burst-suppression N_Index 0 – awake N_Index 100), might drift downward over time despite constant MAC values.Methods: This prospective single-centre randomized clinical study was conducted at a University Hospital Surgical Intensive Care Unit and included consecutive, postoperative ICU patients fulfilling the inclusion criteria. Patients were randomly assigned to receive uninterrupted inhalational sedation with isoflurane, sevoflurane, or desflurane. The end-expiratory concentration of the anaesthetics and the EEG-derived index were measured continuously in time-stamped pairs. Sedation depth was also monitored using Richmond-Agitation-Sedation-Scale (RASS). The paired t-test and linear models (bootstrapped or multilevel) have been employed to analyze MAC, N_Index and RASS across the three groups. Results: Thirty patients were recruited (female/male: 10/20, age 64±11, Simplified Acute Physiology Score II 30±10). In the first 24 hours, 21.208 pairs of data points (N_Index and MAC) were recorded. The median MAC of 0.58±0.06 remained stable over the sedation time in all three groups. The t-test indicated in the isoflurane and sevoflurane groups a significant drop in RASS and EEG-derived N_Index in the first versus last two sedation hours. We applied a multilevel linear model on the entire longitudinal data, nested per patient, which produced the formula N_Index=43−0.7·hours (R2=0.76), showing a strong negative correlation between sedation’s duration and the N_Index. Bootstrapped linear models applied for each sedation group produced: N_Index of 43–0.9, 45–0.8, and 43–0.4·hours for isoflurane, sevoflurane, and desflurane, respectively. The regression coefficient for desflurane was almost half of those for isoflurane and sevoflurane, indicating a less pronounced time-effect in this group.Conclusions: Maintaining constant MAC does not guarantee stable sedation depth. Thus, the patients necessitate frequent clinical assessments or, when unfeasible, continuous EEG monitoring. The differences across different volatile anaesthetics regarding their time-dependent negative drift requires further exploration.Trial registration: NCT03860129.

scholarly journals Negative drift of sedation depth in critically ill patients receiving constant minimum alveolar concentration of isoflurane, sevoflurane, or desflurane: a randomized controlled trial

Critical Care ◽  
2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Adrian-Iustin Georgevici ◽  
Theodoros Kyprianou ◽  
Jennifer Herzog-Niescery ◽  
Livia Procopiuc ◽  
Sivakkanan Loganathan ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Linear Models ◽  
Minimum Alveolar Concentration ◽  
Surgical Intensive Care Unit ◽  
Randomized Clinical Study ◽  
Continuous Eeg ◽  
Negative Drift

Abstract Background Intensive care unit (ICU) physicians have extended the minimum alveolar concentration (MAC) to deliver and monitor long-term volatile sedation in critically ill patients. There is limited evidence of MAC’s reliability in controlling sedation depth in this setting. We hypothesized that sedation depth, measured by the electroencephalography (EEG)-derived Narcotrend-Index (burst-suppression N_Index 0—awake N_Index 100), might drift downward over time despite constant MAC values. Methods This prospective single-centre randomized clinical study was conducted at a University Hospital Surgical Intensive Care Unit and included consecutive, postoperative ICU patients fulfilling the inclusion criteria. Patients were randomly assigned to receive uninterrupted inhalational sedation with isoflurane, sevoflurane, or desflurane. The end-expiratory concentration of the anaesthetics and the EEG-derived index were measured continuously in time-stamped pairs. Sedation depth was also monitored using Richmond-Agitation-Sedation-Scale (RASS). The paired t-test and linear models (bootstrapped or multilevel) have been employed to analyze MAC, N_Index and RASS across the three groups. Results Thirty patients were recruited (female/male: 10/20, age 64 ± 11, Simplified Acute Physiology Score II 30 ± 10). In the first 24 h, 21.208 pairs of data points (N_Index and MAC) were recorded. The median MAC of 0.58 ± 0.06 remained stable over the sedation time in all three groups. The t-test indicated in the isoflurane and sevoflurane groups a significant drop in RASS and EEG-derived N_Index in the first versus last two sedation hours. We applied a multilevel linear model on the entire longitudinal data, nested per patient, which produced the formula N_Index = 43 − 0.7·h (R2 = 0.76), showing a strong negative correlation between sedation’s duration and the N_Index. Bootstrapped linear models applied for each sedation group produced: N_Index of 43–0.9, 45–0.8, and 43–0.4·h for isoflurane, sevoflurane, and desflurane, respectively. The regression coefficient for desflurane was almost half of those for isoflurane and sevoflurane, indicating a less pronounced time-effect in this group. Conclusions Maintaining constant MAC does not guarantee stable sedation depth. Thus, the patients necessitate frequent clinical assessments or, when unfeasible, continuous EEG monitoring. The differences across different volatile anaesthetics regarding their time-dependent negative drift requires further exploration. Trial registration: NCT03860129.

scholarly journals Treatment of a Critically Ill COVID-19 Patient with the Seraph 100 Microbind Affinity Filter

TH Open ◽  
2021 ◽  
Vol 05 (02) ◽  
pp. e134-e138
Author(s):  
Anke Pape ◽  
Jan T. Kielstein ◽  
Tillman Krüger ◽  
Thomas Fühner ◽  
Reinhard Brunkhorst
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Randomized Trials ◽  
Clinical Course ◽  
Pharmacological Therapy ◽  
The European Union ◽  
Positive Effects ◽  
Special Patient

AbstractThe coronavirus disease 2019 (COVID-19) pandemic has a serious impact on health and economics worldwide. Even though the majority of patients present with moderate and mild symptoms, yet a considerable portion of patients need to be treated in the intensive care unit. Aside from dexamethasone, there is no established pharmacological therapy. Moreover, some of the currently tested drugs are contraindicated for special patient populations like remdesivir for patients with severely impaired renal function. On this background, several extracorporeal treatments are currently explored concerning their potential to improve the clinical course and outcome of critically ill patients with COVID-19. Here, we report the use of the Seraph 100 Microbind Affinity filter, which is licensed in the European Union for the removal of pathogens. Authorization for emergency use in patients with COVID-19 admitted to the intensive care unit with confirmed or imminent respiratory failure was granted by the U.S. Food and Drug Administration on April 17, 2020.A 53-year-old Caucasian male with a severe COVID-19 infection was treated with a Seraph Microbind Affinity filter hemoperfusion after clinical deterioration and commencement of mechanical ventilation. The 70-minute treatment at a blood flow of 200 mL/minute was well tolerated, and the patient was hemodynamically stable. The hemoperfusion reduced D-dimers dramatically.This case report suggests that the use of Seraph 100 Microbind Affinity filter hemoperfusion might have positive effects on the clinical course of critically ill patients with COVID-19. However, future prospective collection of data ideally in randomized trials will have to confirm whether the use of Seraph 100 Microbind Affinity filter hemoperfusion is an option of the treatment for COVID-19.

scholarly journals Bereavement interventions to support informal caregivers in the intensive care unit: a systematic review

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Stephana J. Moss ◽  
Krista Wollny ◽  
Therese G. Poulin ◽  
Deborah J. Cook ◽  
Henry T. Stelfox ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Traumatic Stress ◽  
Critically Ill Patients ◽  
Informal Caregivers ◽  
Post Traumatic Stress ◽  
Bereavement Support ◽  
Complex Needs ◽  
Post Traumatic

Abstract Background Informal caregivers of critically ill patients in intensive care unit (ICUs) experience negative psychological sequelae that worsen after death. We synthesized outcomes reported from ICU bereavement interventions intended to improve informal caregivers’ ability to cope with grief. Data sources MEDLINE, EMBASE, CINAHL and PsycINFO from inception to October 2020. Study selection Randomized controlled trials (RCTs) of bereavement interventions to support informal caregivers of adult patients who died in ICU. Data extraction Two reviewers independently extracted data in duplicate. Narrative synthesis was conducted. Data synthesis Bereavement interventions were categorized according to the UK National Institute for Health and Clinical Excellence three-tiered model of bereavement support according to the level of need: (1) Universal information provided to all those bereaved; (2) Selected or targeted non-specialist support provided to those who are at-risk of developing complex needs; and/or (3) Professional specialist interventions provided to those with a high level of complex needs. Outcome measures were synthesized according to core outcomes established for evaluating bereavement support for adults who have lost other adults to illness. Results Three studies of ICU bereavement interventions from 31 ICUs across 26 hospitals were included. One trial examining the effect of family presence at brain death assessment integrated all three categories of support but did not report significant improvement in emotional or psychological distress. Two other trials assessed a condolence letter intervention, which did not decrease grief symptoms and may have increased symptoms of depression and post-traumatic stress disorder, and a storytelling intervention that found no significant improvements in anxiety, depression, post-traumatic stress, or complicated grief. Four of nine core bereavement outcomes were not assessed anytime in follow-up. Conclusions Currently available trial evidence is sparse and does not support the use of bereavement interventions for informal caregivers of critically ill patients who die in the ICU.

scholarly journals Intensive care unit physician-delivered point of care renal tract ultrasound in acute kidney injury is feasible

2018 ◽  
Vol 19 (4) ◽  
pp. 313-318 ◽  
Author(s):  
Prashant Parulekar ◽  
Ed Neil-Gallacher ◽  
Alex Harrison
Keyword(s):  
Intensive Care Unit ◽  
Acute Kidney Injury ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Point Of Care ◽  
Kidney Injury ◽  
Diagnostic Quality ◽  
The Core ◽  
Low Incidence

Acute kidney injury is common in critically ill patients, with ultrasound recommended to exclude renal tract obstruction. Intensive care unit clinicians are skilled in acquiring and interpreting ultrasound examinations. Intensive Care Medicine Trainees wish to learn renal tract ultrasound. We sought to demonstrate that intensive care unit clinicians can competently perform renal tract ultrasound on critically ill patients. Thirty patients with acute kidney injury were scanned by two intensive care unit physicians using a standard intensive care unit ultrasound machine. The archived images were reviewed by a Radiologist for adequacy and diagnostic quality. In 28 of 30 patients both kidneys were identified. Adequate archived images of both kidneys each in two planes were possible in 23 of 30 patients. The commonest reason for failure was dressings and drains from abdominal surgery. Only one patient had hydronephrosis. Our results suggest that intensive care unit clinicians can provide focussed renal tract ultrasound. The low incidence of hydronephrosis has implications for delivering the Core Ultrasound in Intensive Care competencies.

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