Case management-based post-stroke care for patients with acute stroke and TIA (SOS-Care): a prospective cohort study.

BACKGROUND: The high incidence of stroke recurrence necessitates effective post-stroke care. This study investigates the effectiveness of a case management-based post-stroke care program in patients with acute stroke and TIA. METHODS: In this prospective cohort study, patients with TIA, ischemic stroke or intracerebral hemorrhage were enrolled into a 12-month case management-based program (SOS-Care) along with conventional care. Control patients received only conventional care. The program included home and phone consultations by case managers, focusing on education, medical and social needs and guideline-based secondary prevention. The primary outcome was the composite of stroke recurrence and vascular death after 12 months. Secondary outcomes included vascular risk factor control at 12 months. RESULTS: From 11/2011 to 12/2020, 1109 patients (17.9% TIA, 77.5% ischemic stroke, 4.6% intracerebral hemorrhage) were enrolled. After 85 (7.7%) dropouts, 925 SOS-Care patients remained for comparative analysis with 99 controls. Baseline characteristics were similar, except for fewer males and less frequent history of dyslipidemia in post-stroke care. At 12 months, post-stroke care was associated with a reduction in the composite endpoint compared to controls (4.9 vs. 14.1%; HR 0.30, 95% CI 0.16-0.56, p < 0.001), with consistent results in ischemic stroke patients alone (HR 0.32, 95% CI 0.17-0.61, p < 0.001). Post-stroke care more frequently achieved treatment goals for hypertension, dyslipidemia, diabetes, BMI and adherence to secondary prevention medication (p < 0.05). CONCLUSIONS: Case management-based post-stroke care may effectively mitigate the risk of vascular events in unselected stroke patients. These findings could guide future randomized trials investigating the efficacy of case management-based models in post-stroke care.

Temporary reversal of nerve and muscle dysfunction by serial electrical stimulation in critical illness neuromyopathy.

OBJECTIVE: Critical Illness Neuromyopathy (CIPNM) is a complication in sepsis patients with still enigmatic disease mechanisms. We investigated a novel electrical stimulation method to better define neuromuscular dysfunction in patients with CIPNM. METHODS: We studied 18 sepsis CIPNM patients on intensive care units, 13 at an early and 5 at a later disease stage, 7 sepsis control, and 8 neuropathy control patients. We applied slow conditioning electrical pulses at motor nerves and directly at the muscle to investigate a facilitation phenomenon (FP) of small or absent compound motor action potentials (CMAPs). RESULTS: Serial pulses induced a 2 to 490-fold increase in CMAP amplitudes in 17/18 Intensive Care Unit (ICU)-CIPNM patients (p < 0.001). These effects were short lived and reproducible. Direct muscle stimulation in the tibialis anterior muscle resulted in up to 130-fold FP in 7/9 patients tested (p < 0.01). In 4/5 post-ICU CIPNM patients FP was up to 10-fold. None of the 7 ICU sepsis control patients without CIPNM with similar disease severity and none of 8 neuropathy patients showed FP (p < 0.001). On needle EMG only 5/16 ICU patients tested revealed spontaneous activity. CONCLUSIONS: Conditioning electrical stimulation detected a functional component of the disease process showing temporary improvement in sepsis-associated CIPNM. SIGNIFICANCE: New test differentiates functional from degenerative pathology.

Characteristics and outcomes of sepsis patients with and without COVID-19.

BACKGROUND: The aim of this study was to describe and compare clinical characteristics and outcomes in critically ill septic patients with and without COVID-19. METHODS: From February 2020 to March 2021, patients from surgical and medical ICUs at the University Hospital Dresden were screened for sepsis. Patient characteristics and outcomes were assessed descriptively. Patient survival was analyzed using the Kaplan-Meier estimator. Associations between in-hospital mortality and risk factors were modeled using robust Poisson regression, which facilitates derivation of adjusted relative risks. RESULTS: In 177 ICU patients treated for sepsis, COVID-19 was diagnosed and compared to 191 septic ICU patients without COVID-19. Age and sex did not differ significantly between sepsis patients with and without COVID-19, but SOFA score at ICU admission was significantly higher in septic COVID-19 patients. In-hospital mortality was significantly higher in COVID-19 patients with 59% compared to 29% in Non-COVID patients. Statistical analysis resulted in an adjusted relative risk for in-hospital mortality of 1.74 (95%-CI=1.35-2-24) in the presence of COVID-19 compared to other septic patients. Age, procalcitonin maximum value over 2 ng/ml, need for renal replacement therapy, need for invasive ventilation and septic shock were identified as additional risk factors for in-hospital mortality. CONCLUSION: COVID-19 was identified as independent risk factor for higher in-hospital mortality in sepsis patients. The need for invasive ventilation and renal replacement therapy as well as the presence of septic shock and higher PCT should be considered to identify high-risk patients.

[White Paper - Improving the care of patients with impairments following sepsis and infections]. / White Paper ­ Verbesserung der Versorgungs- und Behandlungsangebote für Menschen mit Sepsis- und Infektionsfolgen.

Hundreds of thousands of individuals who experience lasting sequelae after sepsis and infections in Germany do not receive optimal care. In this White Paper we present measures for improvement, which were developed by a multidisciplinary expect panel as part of the SEPFROK project. Improved care rests on four pillars: 1. cross-sectoral assessment of sequelae and a structured discharge and transition management, 2. interdisciplinary rehabilitation and aftercare with structural support, 3. strengthening the specific health literacy of patients and families, and 4. increased research into causes, prevention and treatment of sequelae. To achieve this, appropriate cross-sectoral care structures and legal frameworks must be created.

Autotitrating Bilevel Positive Airway Pressure in Large Vessel Steno-Occlusive Stroke Patients With Suspected Sleep Apnea: A Multicenter Randomized Controlled Study.

Background: We hypothesized that autotitrating bilevel positive airway pressure (auto-BPAP) favorably affects short-term clinical outcomes in hyperacute ischemic stroke. Methods: In a multicenter, randomized, controlled trial patients with large vessel steno-occlusive stroke and clinically suspected sleep apnea were allocated to auto-BPAP or standard stroke care alone. Auto-BPAP was initiated within 24 h from stroke onset and performed over 48 h during diurnal and nocturnal sleep. Sleep apnea was assessed using cardiorespiratory polygraphy. Primary endpoint was early neurological improvement on National Institutes of Health Stroke Scale (NIHSS) score at 72 h. Safety and tolerability of BPAP, functional independence [modified Rankin Scale (mRS) 0-2], stroke recurrence, and mortality at 90 days were assessed. Results: Due to low recruitment, the trial was prematurely stopped after 24 patients had been randomized (auto-BPAP, n = 14; control, n = 10): median baseline NIHSS 13 (5.5-18), 88% large vessel occlusion, and 12% large vessel stenosis. Polygraphy confirmed sleep apnea in 64% of auto-BPAP and 88% of control patients (p = 0.34). Adherence to auto-BPAP was achieved by 9 of the 14 (64%) patients. Between auto-BPAP and control patients, no differences were observed in early neurological improvement (median NIHSS change: -2.0, IQR = 7 points vs. -0.5, IQR = 3 points), 90 days functional independence (21 vs. 30%, p = 0.67), stroke recurrence (0 vs. 20%, p = 0.16), and death (14 vs. 20%, p = 1.0). No safety concerns were identified. Conclusions: In this prematurely terminated trial, auto-BPAP was safe but did not show an effect on short-term clinical outcomes in selected ischemic stroke patients. Its tolerability, however, may be limited in hyperacute stroke care and needs to be improved before larger trials are conducted. Clinical Trial Registration: ClinicalTrials.gov, identifier: NCT01812993.

[Sepsis: Sequelae for Affected Patients and The Health Care System]. / Sepsis: Die Folgen für betroffene Patienten und das Gesundheitssystem.

The number of patients who survive sepsis is growing. However, two of three sepsis survivors suffer from new physical or mental sequelae. Cognitive deficits, depression or limitations of the activities of daily living can seriously impair quality of life and working ability. Sepsis sequelae cover a range of lesions; current rehabilitation therapies appear unsuited because they are focused on only one organ system. An interdisciplinary approach is necessary to evaluate and treat sepsis sequelae. Survivors and their relatives should be informed about sepsis and possible sequelae as early as possible. Further studies are needed to improve the understanding of pathomechanisms and effectivity of treatment interventions for sepsis sequelae.

Effect of physiotherapy on regaining independent walking in patients with intensive-care-unit-acquired muscle weakness: A cohort study.

OBJECTIVES: To describe physiotherapeutic interventions used in the post-acute inpatient rehabilitation of chronic critically ill patients with intensive-care-unit-acquired muscle weakness, and to determine the influence of such interventions on patients' ability to walk. METHODS: Chronic critically ill patients with intensive-care-unit-acquired muscle weakness who were in post-acute and rehabilitation units were included in a cohort study. During post-acute rehabilitation, the patients' functional status at baseline, all daily physiotherapeutic interventions, and ability to walk were documented. RESULTS: A total of 150 patients were investigated. In patients who regained walking ability, the most frequent interventions in the first 2 weeks of post-acute rehabilitation were practicing walking, sit-to-stand training, and balance training while sitting (total time per week: 48.03 (standard deviation (SD) 41.10), 20.13 (SD 21.12), and 12.37 (SD 26.95) min, respectively). The most frequent interventions in those who did not regain walking ability were passive-assistive movements, sit-to-stand training, and balance training while sitting (total time per week: 15.29 (SD 22.93), 15.15 (SD 22.75), and 14.85 (SD 16.99) min, respectively). The time spent walking increased the chance of regaining walking ability (adjusted hazard ratio = 1.017 per min walking, p < 0.0001). CONCLUSION: These results suggest that physiotherapy interventions in the rehabilitation of chronic critically ill patients with intensive-care-unit-acquired muscle weakness may stimulate walking function.

Validation of Multiparametric Ultrasonography Criteria with Digital Subtraction Angiography in Carotid Artery Disease: A Prospective Multicenter Study.

PURPOSE: The German Society of Ultrasound in Medicine (DEGUM) recently revised its multiparametric criteria for duplex ultrasonography (DUS) grading of internal carotid artery (ICA) disease. We determined the diagnostic accuracy of the revised DEGUM criteria for ultrasonography grading of ICA disease in a prospective multicenter study. MATERIALS AND METHODS: We evaluated consecutive patients who underwent digital subtraction angiography of the extracranial carotid arteries at four tertiary care hospitals. Blinded investigators graded ICA disease according to DEGUM-recommended ultrasonography criteria and calculated NASCET-type percent stenosis from angiography images. Endpoints included overall classification accuracy, prediction of clinically relevant disease categories and between-test agreement in the continuous range of percent stenosis. RESULTS: A total of 121 patients (median age: 69 [IQR, 16] years; 74 % men; median time between DUS and angiography: 1 day [IQR, 2]) provided 163 DUS-angiography carotid artery pairs. The classification accuracy of the DEGUM criteria to predict stenosis within 10 % increments as compared to angiography was 34.9 % (95 % CI, 28.0 - 42.6). The sensitivity of DUS for the detection of moderate (50 - 69 %) and severe (70 - 99 %) stenosis was 35 % and 81 %, with an overall accuracy of 73 % and 74 %, respectively. The specificity was 89 % and 69 %, respectively. Considering the continuous spectrum of the disease (0 - 100 %), the Bland-Altman interval limit of agreement was 51 %. CONCLUSION: At laboratories experienced with ultrasound grading of the extracranial ICA, the revised DEGUM multiparametric ultrasonography criteria do not eliminate the need for a confirmatory test for the identification of clinically relevant grades of the disease.

[Family-Centered Care in the ICU]. / Umgang mit Angehörigen auf der Intensivstation.

Family-centered care in the ICU is a quality criterion of modern intensive care. Relatives are not just visitors, caregivers and involved stakeholders, but also partners for the medical team, especially when eliciting patient preferences and during shared decisionmaking. The move towards family-centered care signifies that traditional roles are changing; family-centered care is becoming a critical component of optimizing patient outcomes in the ICU.

Acute endovascular treatment delivery to ischemic stroke patients transferred within a telestroke network: a retrospective observational study.

Background Five randomized controlled trials recently demonstrated efficacy of endovascular treatment in acute ischemic stroke. Telestroke networks can improve stroke care in rural areas but their role in patients undergoing endovascular treatment is unknown. Aim We compared clinical outcomes of endovascular treatment between anterior circulation stroke patients transferred after teleconsultation and those directly admitted to a tertiary stroke center. Methods Data derived from consecutive patients with intracranial large vessel occlusion who underwent endovascular treatment from January 2010 to December 2014 at our tertiary stroke center. We compared baseline characteristics, onset-to-treatment times, symptomatic intracranial hemorrhage, in-hospital mortality, reperfusion (modified Treatment in Cerebral Infarction 2b/3), and favorable functional outcome (modified Rankin scale ≤ 2) at discharge between patients transferred from spoke hospitals and those directly admitted. Results We studied 151 patients who underwent emergent endovascular treatment for anterior circulation stroke: median age 70 years (interquartile range, 62-75); 55% men; median National Institutes of Health Stroke Scale score 15 (12-20). Of these, 48 (31.8%) patients were transferred after teleconsultation and 103 (68.2%) were primarily admitted to our emergency department. Transferred patients were younger (p = 0.020), received more frequently intravenous tissue plasminogen activator (p = 0.008), had prolonged time from stroke onset to endovascular treatment initiation (p < 0.0001) and tended to have lower rates of symptomatic intracranial hemorrhage (4.2% vs. 11.7%; p = 0.227) and mortality (8.3% vs. 22.6%; p = 0.041) than directly admitted patients. Similar rates of reperfusion (56.2% vs. 61.2%; p = 0.567) and favorable functional outcome (18.8% vs. 13.7%; p = 0.470) were observed in telestroke patients and those who were directly admitted. Conclusions Telestroke networks may enable delivery of endovascular treatment to selected ischemic stroke patients transferred from remote hospitals that is equitable to patients admitted directly to tertiary hospitals.

CT-angiography source images indicate less fatal outcome despite coma of patients in the Basilar Artery International Cooperation Study.

Background Coma is associated with poor outcome in patients with basilar artery occlusion. Aims We sought to assess whether the posterior circulation Acute Stroke Prognosis Early CT Score and the Pons-Midbrain Index applied to CT angiography source images predict the outcome of comatose patients in the Basilar Artery International Cooperation Study. Methods Basilar Artery International Cooperation Study was a prospective, observational registry of patients with acute basilar artery occlusion with 48 recruiting centers worldwide. We applied posterior circulation Acute Stroke Prognosis Early CT Score and Pons-Midbrain Index to CT angiography source images of Basilar Artery International Cooperation Study patients who presented with coma. We calculated adjusted risk ratios to assess the association of dichotomized posterior circulation Acute Stroke Prognosis Early CT Score (≥8 vs. <8) and Pons-Midbrain Index (<3 vs. ≥3) with mortality and favourable outcome (modified Rankin Scale score 0-3) at one month. Results Of 619 patients in the Basilar Artery International Cooperation Study registry, CT angiography source images were available for review in 158 patients. Among these, 78 patients (49%) presented with coma. Compared to non-comatose patients, comatose patients were more likely to die (risk ratios 2.34; CI 95% 1.56-3.52) and less likely to have a favourable outcome (risk ratios 0.44; CI 95% 0.24-0.80). Among comatose patients, a Pons-Midbrain Index < 3 was related to reduced mortality (adjusted RR 0.66; 95% CI 0.46-0.96), but not to favourable outcome (adjusted RR 1.19; 95% CI 0.39-3.62). Posterior circulation Acute Stroke Prognosis Early CT Score dichotomized at ≥ 8 vs. <8 was not significantly associated with death (adjusted RR 0.70; 95% CI 0.46-1.05). Conclusion In comatose patients with basilar artery occlusion, the extent of brainstem ischemia appears to be related to mortality but not to favourable outcome.

Fitness and mobility training in patients with Intensive Care Unit-acquired muscle weakness (FITonICU): study protocol for a randomised controlled trial.

BACKGROUND: Critical illness myopathy (CIM) and polyneuropathy (CIP) are a common complication of critical illness. Both cause intensive-care-unit-acquired (ICU-acquired) muscle weakness (ICUAW) which increases morbidity and delays rehabilitation and recovery of activities of daily living such as walking ability. Focused physical rehabilitation of people with ICUAW is, therefore, of great importance at both an individual and a societal level. A recent systematic Cochrane review found no randomised controlled trials (RCT), and thus no supporting evidence, for physical rehabilitation interventions for people with defined CIP and CIM to improve activities of daily living. Therefore, the aim of our study is to compare the effects of an additional physiotherapy programme with systematically augmented levels of mobilisation with additional in-bed cycling (as the parallel group) on walking and other activities of daily living. METHODS/DESIGN: We will conduct a prospective, rater-masked RCT of people with ICUAW with a defined diagnosis of CIM and/or CIP in our post-acute hospital. We will randomly assign patients to one of two parallel groups in a 1:1 ratio and will use a concealed allocation. One intervention group will receive, in addition to standard ICU treatment, physiotherapy with systematically augmented levels of mobilisation (five times per week, over 2 weeks; 20 min each session; with a total of 10 additional sessions). The other intervention group will receive, in addition to standard ICU treatment, in-bed cycle sessions (same number, frequency and treatment time as the intervention group). Standard ICU treatment includes sitting balance exercise, stretching, positioning, and sit-to-stand training, and transfer training to get out of bed, strengthening exercise (in and out of bed), and stepping and assistive standing exercises. Primary efficacy endpoints will be walking ability (defined as a Functional Ambulation Category (FAC) level of ≥3) and the sum score of the Functional Status Score for the Intensive Care Unit (FSS-ICU) (range 0-22 points) assessed by a blinded tester immediately after 2 weeks of additional therapy. Secondary outcomes will include assessment of sit-to-stand recovery, overall limb strength (Medical Research Council, MRC) and grip strength, the Physical Function for the Intensive Care Unit Test-Scored (PFIT-S), the EuroQol 5 Dimensions (EQ-5D) questionnaire and the Reintegration to Normal Living Index (RNL-Index) assessed by a blinded tester. We will measure primary and secondary outcomes with blinded assessors at baseline, immediately after 2 weeks of additional therapy, and at 3 weeks and 6 months and 12 months after the end of the additional therapy intervention. Based on our sample size calculation 108 patients will be recruited from our post-acute ICU in the next 3 to 4 years. DISCUSSION: This will be the first RCT comparing the effects of two physical rehabilitation interventions for people with ICUAW due to defined CIP and/or CIM to improve walking and other activities of daily living. The results of this trial will provide robust evidence for physical rehabilitation of people with CIP and/or CIP who often require long-term care. TRIAL REGISTRATION: We registered the study on 6 April 2016 before enrolling the first patient in the trial at the German Clinical Trials Register ( www.germanctr.de ) with the identifier DRKS00010269 . This is the first version of the protocol (FITonICU study protocol).

Collateral state and the effect of endovascular reperfusion therapy on clinical outcome in ischemic stroke patients.

PURPOSE: Clinically successful endovascular therapy (EVT) in ischemic stroke requires reliable noninvasive pretherapeutic selection criteria. We investigated the association of imaging parameters including CT angiographic collaterals and degree of reperfusion with clinical outcome after EVT. METHODS: In our database, we identified 93 patients with large vessel occlusion in the anterior circulation treated with EVT. Besides clinical data, we assessed the baseline Alberta Stroke Program Early CT score (ASPECTS) on noncontrast CT (NCCT) and CT angiography (CTA) source images, collaterals (CT-CS) and clot burden score (CBS) on CTA and the degree of reperfusion after EVT on angiography. Three readers, blinded to clinical information, evaluated the images in consensus. Data-driven multivariable ordinal regression analysis identified predictors of good outcome after 90 days as measured with the modified Rankin Scale. RESULTS: Successful angiographic reperfusion (OR 26.50; 95%-CI 9.33-83.61) and good collaterals (OR 9.69; 95%-CI 2.28-59.27) were independent predictors of favorable outcome along with female sex (OR 0.35; 95%-CI 0.14-0.85), younger age (OR 0.88; 95%-CI 0.83-0.92) and higher NCCT ASPECTS (OR 2.54; 95%-CI 1.01-6.63). Outcome was best in patients with good collaterals and successful reperfusion, but there was no statistical interaction between collaterals and reperfusion. CONCLUSIONS: CTA-collateral status was the strongest pretherapeutic predictor of favorable outcome in ischemic stroke patients treated with EVT. CTA-collaterals are thus well suited for patient selection in EVT. However, the independent effect of reperfusion on outcome tended to be stronger than that of CTA-collaterals.

Safety and efficacy of thrombolysis in telestroke: A systematic review and meta-analysis.

OBJECTIVE: The aim of this systematic review and meta-analysis was to evaluate the safety and efficacy of IV thrombolysis (IVT) with tissue plasminogen activator (tPA) delivered through telestroke networks in patients with acute ischemic stroke. METHODS: We conducted a systematic review and meta-analysis according to PRISMA guidelines. Literature searches on MEDLINE, Embase, and CENTRAL databases covered prospective randomized controlled and nonrandomized studies comparing telemedicine-guided IVT to IVT administered at stroke centers and were published from the earliest date available until April 1, 2015. Outcomes of interest were symptomatic intracerebral hemorrhage, mortality, and functional independence (modified Rankin Scale scores 0-1) at 3 months. Random-effects meta-analysis was used to compute pooled effect estimates and the I(2) statistic to assess heterogeneity. RESULTS: Of 529 records identified, 7 studies totaling 1,863 patients fulfilled our eligibility criteria. Among these, thrombolysis was largely restricted to the 3-hour time window. Symptomatic intracerebral hemorrhage rates were similar between patients subjected to telemedicine-guided IVT and those receiving tPA at stroke centers (risk ratio [RR] = 1.01, 95% confidence interval [CI] 0.37-2.80; p = 0.978) with low evidence of heterogeneity (I(2) = 37%; p = 0.189). There was no difference in mortality (RR = 1.04, 95% CI 0.74-1.48; p = 0.806) or in functional independence (RR = 1.11, 95% CI 0.78-1.57; p = 0.565) at 3 months between telemedicine-guided and stroke center thrombolysis. No heterogeneity was identified (I(2) = 0%, p = 0.964 and I(2) = 52%, p = 0.123, respectively). CONCLUSIONS: Our findings indicate that IV tPA delivery through telestroke networks is safe and effective in the 3-hour time window. Lack of prospective trials, however, emphasizes the need to further substantiate these findings in the 3- to 4.5-hour time window. PROSPERO REGISTRATION INFORMATION: URL: http://www.crd.york.ac.uk/PROSPERO. Unique identifier: CRD42015017232.

Endovascular treatment of ischaemic stroke patients - new evidence and old challenges.

An overwhelming benefit from endovascular treatment of ischaemic stroke could be shown in recent clinical trials, making it the new evidence-based standard of care for ischaemic stroke due to large vessel occlusion. To provide all eligible stroke patients with this therapy at any time, stroke networks and hospitals should streamline their workflow to rapidly image, select, and treat stroke patients. Interdisciplinary cooperation is vital for effective emergency endovascular stroke treatment, which is one of the most complex multidisciplinary functions a hospital can undertake.

The stroke east Saxony pilot project for organized post-stroke care: a case-control study.

BACKGROUND: Low adherence to secondary prevention guidelines in stroke survivors may increase the risk for recurrent stroke and adversely impact quality of life. We aimed to determine the feasibility of a self-developed standardized post-stroke pathway and its impact on secondary stroke prevention and long-term outcome in patients with acute stroke. METHODS: Consecutive patients with acute stroke were prospectively included in a standardized post-stroke pathway accomplished through a single certified CM (case manager), which comprised educational discussions and quarterly checkups for vascular risk factors and adherence to antithrombotic/anticoagulant medication in addition to usual care. At 12 months, we compared achieved target goals for secondary prevention, functional outcome, stroke recurrence, and vascular death with age- and gender-matched controls that received only usual care after stroke. RESULTS: We included 45 cases and 45 controls. The following target goals were more frequently achieved in CM-patients than in controls: blood pressure (100% vs. 46.2%, P < 0.001), cholesterol (100% vs. 74.4%, P < 0.001), and body mass index (67.4% vs. 46.2%, P = 0.052). The CM-intervention emerged as an independent predictor of favorable functional outcome (mRS ≤ 2) at 12 months after adjusting for stroke severity and systemic thrombolysis (OR: 4.27; 95%CI:1.2-15.21; P = 0.025). Quality of life was rated significantly higher in CM-patients than in controls (P = 0.049). As opposed to controls, none of the cases experienced a recurrent stroke (0% vs. 13.3%; P = 0.026) or suffered from vascular death (0% vs. 6.7%; P = 0.242). CONCLUSIONS: Our pilot data suggest that organized post-stroke care enhances achievement of secondary prevention goals. Its possible effect on stroke recurrence, long-term disability, and quality of life is currently investigated in a prospective cohort study.

Multi-parametric ultrasound criteria for internal carotid artery disease-comparison with CT angiography.

INTRODUCTION: The German Society of Ultrasound in Medicine (known by its acronym DEGUM) recently proposed a novel multi-parametric ultrasound approach for comprehensive and accurate assessment of extracranial internal carotid artery (ICA) steno-occlusive disease. We determined the agreement between duplex ultrasonography (DUS) interpreted by the DEGUM criteria and CT angiography (CTA) for grading of extracranial ICA steno-occlusive disease. METHODS: Consecutive patients with acute cerebral ischemia underwent DUS and CTA. Internal carotid artery stenosis was graded according to the DEGUM-recommended criteria for DUS. Independent readers manually performed North American Symptomatic Carotid Endarterectomy Trial-type measurements on axial CTA source images. Both modalities were compared using Spearman's correlation and Bland-Altman analyses. RESULTS: A total of 303 acute cerebral ischemia patients (mean age, 72 ± 12 years; 58 % men; median baseline National Institutes of Health Stroke Scale score, 4 [interquartile range 7]) provided 593 DUS and CTA vessel pairs for comparison. There was a positive correlation between DUS and CTA (r s = 0.783, p < 0.001) with mean difference in degree of stenosis measurement of 3.57 %. Bland-Altman analysis further revealed widely varying differences (95 % limits of agreement -29.26 to 22.84) between the two modalities. CONCLUSION: Although the novel DEGUM criteria showed overall good agreement between DUS and CTA across all stenosis ranges, potential for wide incongruence with CTA underscores the need for local laboratory validation to avoid false screening results.

Diagnostic Impact of Transesophageal Echocardiography in Patients with Acute Cerebral Ischemia.

OBJECTIVES: Transesophageal echocardiography (TEE) is the diagnostic gold standard for the detection of structural heart diseases as potential sources of cardiac emboli in patients with acute cerebral ischemia. We sought to determine the diagnostic yield of TEE in patients with acute ischemic stroke or transient ischemic attack (TIA). METHODS: We retrospectively analyzed consecutive patients with acute cerebral ischemia who were admitted to our hospital between October 2008 and December 2011. TEE reports were screened for detection of cardiac source of embolism judged by the recommendation to change medical management. We performed univariate and multivariate analyses to identify predictors of clinically relevant TEE findings among baseline characteristics. RESULTS: Of 3314 patients with ischemic stroke or TIA, TEE was performed in 791 (24%) patients (mean age 64 ± 13 years, 589 [74%] ischemic stroke, 202 [26%] TIA). A potential cardioembolic source was found in 71 (9%) patients with patent foramen ovale with atrial septal aneurysm being the most common finding (24/71 patients, 34%). In multivariate analysis, peripheral vascular disease (OR 2.57; 95%CI 1.00-6.61), imaging evidence of infarction in multiple locations (OR 4.13; 95%CI 1.36-12.58), and infarction in the posterior circulation (OR 2.11; 95%CI 1.01-4.42) were associated with the identification of a potential cardioembolic source with TEE. CONCLUSION: TEE identified a potential structural cardioembolic source in nearly 10% of our selected patient population with acute ischemic stroke or TIA, thus underlining its diagnostic value. Our data suggest that patients with hitherto unknown stroke etiology should be considered for additional TEE.

Imaging-based selection for revascularization in acute ischemic stroke.

PURPOSE OF REVIEW: With the positive results of recent endovascular thrombectomy (EVT) trials, intravenous thrombolysis (IVT) and EVT provide physicians with two majorly effective acute treatment options for patients with acute ischemic stroke. IVT and EVT can be used as a single treatment or as a combined IVT/EVT treatment approach. This review summarizes how imaging findings can help in selecting stroke patients who are likely to benefit from these revascularization therapies. RECENT FINDINGS: IVT applied within 4.5 h from symptom onset remains the mainstay of acute stroke therapy and was also applied to most patients in the randomized EVT trials. Recent studies have failed to demonstrate the effectiveness of IVT in later time windows. Vascular imaging is crucial to identify patients with a target intracranial occlusion prior to EVT. Patients with a small ischemic core, with good leptomeningeal collaterals or with evidence of penumbral tissue may particularly benefit from EVT. These imaging findings may also identify patients who benefit from EVT if applied more than 6 h from symptom onset. SUMMARY: Pretherapeutic imaging findings help in identifying stroke patients who are likely to benefit from endovascular stroke therapies, and may identify patients who benefit from revascularization therapies in later time windows.

Association of time on outcome after intravenous thrombolysis in the elderly in a telestroke network.

BACKGROUND: Recent studies showed that the safety and benefit of early intravenous (IV) thrombolysis on favourable outcomes in acute ischemic stroke are also seen in the elderly. Furthermore, it has shown that age increases times for pre- and in-hospital procedures. We aimed to assess the applicability of these findings to telestroke. METHODS: We retrospectively analysed 542 of 1659 screened consecutive stroke patients treated with IV thrombolysis in our telestroke network in East-Saxony, Germany from 2007 to 2012. Outcome data were symptomatic intracranial hemorrhage (sICH) by ECASS-2-criteria, survival at discharge and favourable outcome, defined as a modified Rankin scale (mRS) of 0-2 at discharge. RESULTS: Thirty-three percent of patients were older than 80 years (elderly). Being elderly was associated with higher risk of sICH (p = 0.003), less favourable outcomes (p = 0.02) and higher mortality (p = 0.01). Using logistic regression analysis, earlier onset-to-treatment time was associated with favourable outcomes in not elderly patients (adjusted odds ratio (OR) 1.18; 95% CI 1.03-1.34; p = 0.01), and tended to be associated with favourable outcomes (adjusted OR 1.13; 95% CI 0.92-1.38; p = 0.25) and less sICH (adjusted OR 0.88; 95% CI 0.76-1.03; p = 0.11) in elderly patients. Age caused no significant differences in onset-to-door-time (p = 0.25), door-to-treatment-time (p = 0.06) or onset-to-treatment-time (p = 0.29). CONCLUSION: Treatment time seems to be critical for favourable outcome after acute ischemic stroke in the elderly. Age is not associated with longer delivery times for thrombolysis in telestroke.