scholarly journals Role of Diffusion Weighted Imaging in Enhancing MR Imaging in Recent Is-chemic Stroke Patients

2020 ◽  
Vol 35 (2) ◽  
pp. 104-115
Author(s):  
Hajer A. Alfadeel
Keyword(s):  
Acute Stroke ◽  
Spin Echo ◽  
Haemorrhagic Stroke ◽  
P Value ◽  
Consecutive Series ◽  
Stroke Patients ◽  
First Line ◽  
Diffusion Weighted ◽  
Significant Difference

Stroke is a common cause of admission to hospitals, and imaging in acute stroke is necessary to differentiate ischemic from haemorrhagic stroke and to exclude other diagnoses. This study aimed to evaluate the role of diffusion-weighted magnetic resonance imaging (DW MRI) in the diagnosis of recent cerebral ischemic infarction in a consecutive series of patients with symptoms of acute stroke and its feasibility as first-line imaging for those patients. We report our results with DWI and apparent diffusion coefficient (ADC) mapping comparing the sensitivity of DWI with that of conventional T2 weighted and fluid-attenuated inversion recovery (FLAIR) MRI. A Prospective audit of 87 patients with clinically suspected recent stroke referred for imaging over a consecutive 20-week period was done. The data collected included patient age, time from onset of symptoms, and clinical presentation. DWI echo planar, FLAIR, and turbo spin-echo T2-weighted MRI were performed, and ADC maps were generated. Conventional MR images were assessed before DW images. DWI was considered positive for the diagnosis of new arterial stroke whenever hyperintensities with reduced ADC values were observed, and the site of infarct detected on the images was included in patients’ data. The results were 47 patients had a final diagnosis of recent ischemic cerebral infarct. With DWI, 98% of the ischemic lesions were detected, whereas with FLAIR, only 70% were detected, and with T2-weighted images, 66% of lesions were found. There was a significant difference between the results of ischemic infarcts’ detection on DWI and T2-w/FLAIR in relation to time from onset (P value = .012). In this study, I was able to image 68% (60 of 87) of the referred suspected stroke patients with DW MRI within 48 hours and 39 patients (45%) within 24 hours of the onset of symptoms. DW MRI showed high sensitivity and superiority over conventional T2 and FLAIR imaging for the detection of acute ischemic lesions in stroke patients; it also proved quite feasible as a first-line of neuroimaging.  

scholarly journals Current status of aspiration thrombectomy for acute stroke patients in China: data from ANGEL-ACT Registry

2021 ◽  
Vol 14 ◽  
pp. 175628642110077
Author(s):  
Xu Tong ◽  
Yilong Wang ◽  
Clayton T. Bauer ◽  
Baixue Jia ◽  
Xuelei Zhang ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Real World ◽  
Current Status ◽  
Stroke Patients ◽  
First Line ◽  
Vessel Occlusion ◽  
Clinical Trial Registration ◽  
Aspiration Thrombectomy ◽  
Rescue Treatment ◽  
Significant Difference

Background and Aims: Although noninferior to stent retriever (SR) as first-line approach for endovascular treatment (EVT) of acute large vessel occlusion (LVO) stroke, little is known about the current status of direct aspiration (DA) as first-line thrombectomy in China. This analysis of a prospective, nationwide registry (ANGEL-ACT) aimed to investigate the prevalence and comparative effectiveness of DA-first thrombectomy in a real-world practice in China. Methods: All patients receiving thrombectomy were screened from a prospective cohort of LVO patients undergoing EVT at 111 hospitals in China between November 2017 and March 2019, and divided into two groups based upon which type of thrombectomy was attempted first (“DA-first” and “SR-first”). The following outcome measures were compared using logistic regression models with adjustment: successful recanalization after first-device alone and all procedures, use of rescue treatment, intracranial hemorrhage (ICH) within 24 h, and modified Rankin Scale (mRS) score at 90 days. Results: A total of 1225 patients, 102 (8.3%) in DA-first group and 1123 (91.7%) in SR-first group, were included. Patients receiving DA-first had less often successful recanalization after first-device alone [30.4 versus 66.4%; odds ratio (OR) = 0.23, 95% confidence interval (CI) = 0.15–0.37], more frequent rescue treatment (62.8 versus 27.0%; OR = 4.55, 95% CI = 2.92–7.08) and ICH (35.4 versus 22.1%; OR = 1.78, 95% CI = 1.12–2.83) than those receiving SR-first; however, no significant difference was found in successful recanalization after all procedures (84.3 versus 90.3%; p = 0.18) and 90-day mRS (median: 3 versus 3 points; p = 0.90) between both groups. Conclusion: This real-world registry suggested that DA-first thrombectomy for acute stroke patients lagged behind in China during the study period. Far fewer DA-first than SR-first thrombectomies were performed, and DA-first was associated with lower first-device recanalization, more frequently requiring rescue treatment, and increased ICH risk. Clinical Trial Registration: ClinicalTrials.gov , NCT03370939.

scholarly journals Role of Diffusion-Weighted Imaging in the Evaluation of Perianal Fistulae

2021 ◽  
Author(s):  
Deb K. Boruah ◽  
Karuna Hazarika ◽  
Halimuddin Ahmed ◽  
Krishna K. Borah ◽  
Samudra Borah ◽  
...  
Keyword(s):  
Diffusion Weighted Imaging ◽  
Imaging Modality ◽  
Perianal Fistula ◽  
P Value ◽  
Adc Value ◽  
Perianal Fistulas ◽  
Diffusion Weighted ◽  
Significant Difference ◽  
Perianal Fistulae

Abstract Background Magnetic resonance imaging (MRI) is the imaging modality of choice for evaluating perianal fistulae, due to its ability to show the relationship of perianal fistulae with anal sphincters, fistula extensions, secondary ramifications and associated complications. Aim To evaluate the role of diffusion-weighted MRI in the evaluation of perianal fistulae. Settings and Design A hospital-based cross-sectional study. Materials and Methods The study group composed of 47 patients of perianal fistula. MRI with diffusion-weighted imaging (DWI) was performed with Philips 0.5 T Ingenia scanner. DWI with different b-values (b = 50, b = 400, and b = 800 smm2) were obtained. The MRI findings were correlated with local clinical examination and or surgical findings. Statistical Analysis Used Chi-square test, independent samples t-test, and receiver operating characteristic curve analysis. Result Fifty-nine perianal fistulas in 47 patients were included in the study sample. The visibility of perianal fistula on DWI was less than T2-weighted (T2W) and combined DWI-T2W images. Distinctly visualized (visibility score 2) perianal fistulas were observed in 47 fistulas (79.6%) on DWI, 54 (91.5%) on T2W, and 58 (98.3%) on DWI-T2W images. The mean of apparent diffusion coefficient (ADC) values of active fistula was 0.972 ± 0.127 [SD] 10−3 mm2/s and inactive was 1.232 ± 0.185 [SD] 10−3 mm2/s with a significant difference (p-value < 0.0005). A cut-off mean ADC value of 1.105 × 10−3 mm2/s was used to differentiate active from the inactive fistula with a sensitivity of 87.5% and specificity of 73.3%. Conclusion Combined DWI-T2W evaluation had a better performance in the detection of fistula than DWI or T2W alone. DWI with mean ADC calculation had a good performance in differentiating active from the inactive fistulas.

scholarly journals Hyperglycemia as a Prognostic Factor In Acute Ischemic Stroke Patients

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
A E E Abdelhamid ◽  
H A El-Gendy ◽  
M A E Nosseir ◽  
M A Mohamed
Keyword(s):  
Ischemic Stroke ◽  
Hospital Stay ◽  
Acute Stroke ◽  
Acute Ischemic Stroke ◽  
Motor Deficit ◽  
Control Group ◽  
P Value ◽  
Motor Power ◽  
Stroke Patients ◽  
Significant Difference

Abstract Background Hyperglycemia is encountered in 20% to 40% of acute stroke patients, with or without a pre-morbid diagnosis of diabetes mellitus. Hyperglycemia is a risk factor for infarct expansion and poor outcome through the first 72 hours of hospitalization in both diabetics and non-diabetics. Aim of the Work to study the glycemic status after acute ischemic stroke and assess its role in influencing stroke out-come as regards the duration of hospital stay, motor deficit outcome and mortality. Patients and Methods This retrospective study was conducted in Elzaiton specialized hospital and Ain Shams University from June 2016 to June 2017 on 80 patients after approval of local medical ethical committee. Patients with acute ischemic stroke without other major comorbidities within 24 hours of onset of symptoms were evaluated. Results The study revealed that hospital stay mean was 12.04 ± 9.61 (in control group) and 21.36 ± 12.49 (in uncontrolled group), with p-value &lt; 0.022 S. A highly statistically significant difference between controlled and uncontrolled according to increase motor power at ICU admission in controlled a highly statistically significant difference between controlled and uncontrolled according to increase motor power discharge in controlled group. A highly statistically significant difference was found between both groups as regards outcome (mortality). Conclusion Hyperglycemia is common among acute stroke patients and is associate with less favorable outcome as regards mortality, hospital stay and functional outcome and euglycemic control is recommended in these patients.

The role of nursing in the rehabilitation of acute stroke patients: Toward a unified theoretical perspective

Pflege ◽  
1999 ◽  
Vol 12 (1) ◽  
pp. 21-27
Author(s):  
Marit Kirkevold
Keyword(s):  
Acute Stroke ◽  
Theoretical Perspective ◽  
Stroke Patients ◽  
Role Of Nursing ◽  
Rolle Der Pflegenden

Eine Übersicht der bestehenden Literatur weist auf Unsicherheiten bezüglich der spezifischen Rolle der Pflegenden in der Rehabilitation von Hirnschlagpatientinnen und -patienten hin. Es existieren zwei unterschiedliche Begrifflichkeiten für die Rolle der Pflegenden, keine davon bezieht sich auf spezifische Rehabilitationsziele oder Patientenergebnisse. Ein anfänglicher theoretischer Beitrag der Rolle der Pflege in der Genesung vom Hirnschlag wird als Struktur unterbreitet, um die therapeutischen Aspekte der Pflege im Koordinieren, Erhalten und Üben zu vereinen. Bestehende Literatur untermauert diesen Beitrag. Weitere Forschung ist jedoch notwendig, um den spezifischen Inhalt und Fokus der Pflege in der Genesung bei Hirnschlag zu entwickeln.

scholarly journals Role of Quantitative Diffusion-Weighted Imaging in Differentiating Benign and Malignant Orbital Masses

2021 ◽  
Author(s):  
Preeti Mundhada ◽  
Sudarshan Rawat ◽  
Ullas Acharya ◽  
Dhananjay Raje
Keyword(s):  
Roc Curve ◽  
Diffusion Weighted Imaging ◽  
Care Hospital ◽  
Adc Value ◽  
Diffusion Weighted ◽  
Significant Difference ◽  
Orbital Masses ◽  
Adc Values ◽  
Orbital Lesions

Abstract Aim To determine the role of diffusion-weighted imaging (DWI) with apparent diffusion coefficient (ADC) values in differentiating benign and malignant orbital masses. Materials and Methods After obtaining institutional ethical board approval and informed consent from all patients, an observational study was done for a period of 24 months in the radiology department of a tertiary care hospital in South India. Conventional magnetic resonance imaging and DWI using a 3T scanner was done for all patients with suspected orbital mass lesion. ADC value and clinicohistopathological correlation were studied for every patient. Chi-square test was used to compare the signal characteristics of DWI and ADC maps between benign and malignant lesions. A comparison of mean ADC values for benign and malignant masses was performed using Student’s t-test for independent samples. The cut-off value for ADC was obtained using the receiver operating characteristic (ROC) curve. Results Of 44 patients with orbital lesions, 70% were benign and 30% were malignant. There was a significant difference in the mean ADC values of benign and malignant orbital masses. Using ROC curve analysis, an optimal ADC threshold of 1.26 × 10−3 mm2/s was calculated for the prediction of malignancy with 100% sensitivity, 80.65% specificity, and 86.36% accuracy (95% confidence interval: 0.872, 1.00, p < 0.0001). Two ADC thresholds were used to characterize the orbital masses with more than 90% confidence. Conclusion Quantitative assessment of ADC is a useful noninvasive diagnostic tool for differentiating benign and malignant orbital masses. Malignant orbital lesions demonstrate significantly lower ADC values as compared with benign lesions.

scholarly journals Clinical Efficacy of a New Robot-assisted Gait Training System for Acute Stroke Patients

2021 ◽  
Author(s):  
Andy Chien ◽  
Fei-Chun Chang ◽  
Nai-Hsin Meng ◽  
Pei-Yu Yang ◽  
Ching Huang ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Acute Stroke ◽  
Quality Index ◽  
Pittsburgh Sleep Quality Index ◽  
Gait Training ◽  
Training System ◽  
Control Group ◽  
Stroke Patients ◽  
Robot Assisted ◽  
Significant Difference

Abstract Purpose Robot-assisted gait rehabilitation has been proposed as a plausible supplementary rehabilitation strategy in stroke rehabilitation in the last decade. However, its exact benefit over traditional rehabilitation remain sparse and unclear. It is therefore the purpose of the current study to comparatively investigate the clinical benefits of the additional robot-assisted training in acute stroke patients compared to standard hospital rehabilitation alone. Methods Ninety acute stroke patients (< 3 month) were recruited. All participants received the standard hospital neurorehabilitation comprises 45–60 min sessions daily for 3 weeks. Sixty patients also received an additional 30 min of robot-assisted gait training with the HIWIN MRG-P100 gait training system after each of the standard neurorehabilitation session. Outcome measures included: 1. Berg Balance Scale (BBS); 2. Brunnstrom Stage; 3. Pittsburgh Sleep Quality Index and 4. Taiwanese Depression Questionnaire (TDQ) which were assessed pre-treatment and then after every five training sessions. Results Both groups demonstrated significant improvement pre- and post-treatment for the BBS (robotic group p = 0.023; control group p = 0.033) but no significant difference (p > 0.1) between the groups were found. However, the robotic training group had more participants demonstrating larger BBS points of improvement as well as greater Brunnstrom stage of improvement, when compared to the control group. No significant within and between group statistical differences (p > 0.3) were found for Pittsburgh Sleep Quality Index and Taiwanese Depression Questionnaire. Conclusion The addition of robotic gait training on top of standard hospital neurorehabilitation for acute stroke patients appear to produce a slightly greater improvement in clinical functional outcomes, which is not transferred to psychological status.

Continuous glucose monitoring in acute stroke

2019 ◽  
Author(s):  
Laura Aponte-Becerra ◽  
Rodrigo Quispe ◽  
Laura Mendez-Pino ◽  
Vera Novak ◽  
Magdy Selim ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Acute Stroke ◽  
Continuous Glucose Monitoring ◽  
Poor Prognosis ◽  
Glucose Monitoring ◽  
Mean Amplitude ◽  
P Value ◽  
Stroke Patients ◽  
Glycaemic Variability ◽  
Acute Brain Ischemia

"Hyperglycaemia upon admission is a pathophysiological response to acute brain ischemia that has been independently associated with high mortality rate and poor prognosis. Glycaemic variability (GV) has also shown association with poor clinical outcomes among stroke patients. GV is best assessed by continuous glucose monitoring (CGM), which enables consecutives glucose measurements every 5 minutes. This pilot study aimed: 1) To describe safety, feasibility and tolerability of CGM in the acute stroke setting; and 2) To compare CGM and conventional FS glucose-based monitoring regimen in terms of their relationship with GUA and the accuracy of hypoglycaemic episodes detection. Safety, feasibility and tolerability of CGM was excellent in our cohort of 23 patients with acute stroke (61% ischemic and 39% intracerebral haemorrhage) and there were no adverse events. CGM recorded ten hypoglycaemic episodes that were not detected by conventional FS monitoring. GUA was associated with coefficient of variation (CV) of CGM (p=0.03), CV of FS (p=0.01), standard deviation (SD) of CGM (p-value=0.01) and mean amplitude of glucose excursions (MAGE) (pvalue= 0.001)."

Role of Diffusion Weighted Imaging in Differentiating Benign from Pathological Vertebral Compression

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Faten Mohammed Mahmoud Kamel ◽  
Hazem Ibrahim Abdel Rahman ◽  
Amany Sayed Khaleel Ahmed Elkhayat
Keyword(s):  
Vertebral Fractures ◽  
Diffusion Weighted Imaging ◽  
Laboratory Evaluation ◽  
Vertebral Collapse ◽  
Adc Value ◽  
Conventional Mri ◽  
Diffusion Weighted ◽  
Significant Difference

Abstract Background Vertebral collapse is a common problem due to benign conditions (trauma, infection, osteoporosis) or malignant process. And although the spine is the most common site of bone metastases (39% of bony metastases in patients with primary neoplasms) benign vertebral fractures due to osteopenia occur in one third of cancer patients, making it essential to determine whether the cause of vertebral collapse is benign or malignant. Aim of the Work To establish the role of DWI in differentiating benign from pathologic vertebral fractures using ADC values in comparison with histopathology report /laboratory evaluation and clinical follow-up. Patients and Methods A cross sectional study is approved by the ethics review board of Ain Shams University Hospital (Al Demerdash). All patients provided informed consent for the MR imaging examinations and for inclusion of their data in this analysis. From April 2020 to october 2020, 25 cases with previous imaging with vertebral compression underwent conventional MRI study on the affected region. Diffusion weighted imaging and ADC was added. Results We performed DWI using maximum b-values 600, and quantitative analysis, named apparent diffusion coefficient (ADC). We correlated the ADC number to histopathology, laboratory finding and clinical follow up. In our study there was significant difference (p &lt; 0.04) between DWI of the benign and malignant groups. Also the ADC value showed significant difference &lt;0.001. The mean ADCs of benign VCFs were higher significantly than those of pathological fractures. Conclusion DWI with ADC value was helpful when added to conventional MRI to differentiate benign from pathological (malignant) vertebral compression. It should be a routine sequence in patients with vertebral compression fractures for accurate diagnosis and successful management also can decrease no of biopsies.

scholarly journals FREQUENCY OF FUNCTIONAL DISABILITY AND COGNITIVE IMPAIRMENTS IN SUB-ACUTE STROKE PATIENTS

2021 ◽  
Vol 10 (2) ◽  
pp. 69-74
Author(s):  
Aisha Sarfaraz ◽  
Dr Abdul Azeem ◽  
Mehwish Butt ◽  
Muhammad Umar
Keyword(s):  
Acute Stroke ◽  
Functional Disability ◽  
Cognitive Impairments ◽  
Age Groups ◽  
Female Gender ◽  
Primary Objective ◽  
P Value ◽  
Stroke Patients ◽  
Cross Sectional Survey ◽  
Cross Sectional

BACKGROUND & OBJECTIVE Stroke is a very common neurological condition affects various aspects of health. The primary objective of this study was to find out the frequency of functional disability and cognitive impairments in Sub-acute Stroke patients. MATERIAL AND METHODS A cross-sectional survey was conducted on 112 Sub-acute Stroke patients in Karachi, Pakistan. Using Barthel Index (BI) and Mini-Mental State Examination (MMSE) test was used to find out the frequency of functional disability and cognitive impairments of Sub-acute Stroke patients. RESULTS The correlation of BI scores with MMSE scores for the Male gender was 0.576 whilst the correlation of BI scores with MMSE scores for the Female gender was 0.440. The severity of functional disability concerning age groups assessed P-value was 0.026 using Chi-Square Test. The severity of functional disability (BI severity) concerning gender, P-value was found 0.097 using the same test. CONCLUSION Functional Disability is directly linked with age. However, there was no linkage established between Cognitive Impairment and age as well as gender. On close inspection, there was a trend between Functional disability and gender but not statistically significant.

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