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Procedure: Perfusion

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Total 4550 results found since Jan 2013.

Refining the Detection of Systemic Congestion in Severe Tricuspid Regurgitation: Echocardiography May Be  the Key
A growing number of studies have shown the independent prognostic value of tricuspid regurgitation (TR) and the direct link between TR severity and adverse outcomes.1-4 However, TR not only affects prognosis but has also a negative impact on quality of life,5-7 decreasing functional capacity and increasing systemic congestion.7,8 The systolic blood backflow through the incompetent tricuspid valve reduces the forward stroke volume and cardiac output of the right ventricle (RV). Therefore, as TR worsens, pulmonary perfusion decreases, as does the venous return of oxygenated blood from the pulmonary circulation into the left ...
Source: Journal of the American Society of Echocardiography - September 22, 2023 Category: Cardiology Authors: Federico Fortuni, Nina Ajmone Marsan Tags: Editorial Source Type: research

Role of TRPV1 in electroacupuncture-mediated signal to the primary sensory cortex during regulation of the swallowing function
CONCLUSION: The TRPV1 at CV23 after EA treatment might play a key role in mediating local blood perfusion but was not involved in transferring EA signals to the central nervous system (CNS). These findings collectively suggested that TRPV1 may be one of the important regulators involved in the mechanism of EA treatment for improving swallowing function in PSD.PMID:37718934 | DOI:10.1111/cns.14457
Source: CNS Neuroscience and Therapeutics - September 18, 2023 Category: Neuroscience Authors: Si Yuan Bo Qiu Ying Liang Bing Deng Jing Xu Xiaorong Tang Junshang Wu Sheng Zhou Zeli Li Hongzhu Li Qiuping Ye Lin Wang Shuai Cui Chunzhi Tang Wei Yi Lulu Yao Nenggui Xu Source Type: research

Treatment of patients with multiple organ dysfunction syndrome (MODS) with an electromagnetic field coupled to biorhythmically defined impulse configuration: the MicrocircMODS study
ConclusionPVT treatment was feasible and safe and could be performed without obstruction of standard patient care. An increase in microcirculatory blood flow, a rapid reduction in vasopressor use, and an improvement in global haemodynamics paralleled PVT treatment. Findings of this pilot study allowed forming a concept for a randomized trial for further proof.Graphical abstract
Source: Clinical Research in Cardiology - September 17, 2023 Category: Cardiology Source Type: research

The role of fetal-type posterior cerebral artery in mediating occipital and thalamic perfusion: An arterial spin labeling MRI study
This study investigates the relationship between the presence of fPCA and arterial spin labeling (ASL) hyperperfusion patterns in the medial occipital cortex and thalami.
Source: Journal of Medical Imaging and Radiation Sciences - September 15, 2023 Category: Radiology Authors: Emilian Kalchev Tags: Clinical Perspectives Source Type: research

Post-reperfusion hyperperfusion after endovascular stroke treatment: a prospective comparative study of TCD versus MRI
Conclusions TCD is a reliable bedside tool to identify post-reperfusion hyperperfusion, correlates well with perfusion MRI, and indicates risk of reperfusion injury after MT.
Source: Journal of NeuroInterventional Surgery - September 15, 2023 Category: Neurosurgery Authors: Kneihsl, M., Hinteregger, N., Nistl, O., Deutschmann, H., Horner, S., Poltrum, B., Fandler-Höfler, S., Hatab, I., Haidegger, M., Pinter, D., Pichler, A., Willeit, K., Knoflach, M., Enzinger, C., Gattringer, T. Tags: Ischemic stroke Source Type: research

Selecting stroke patients for thrombectomy: is CTA+ASPECTS enough?
Since 2014, a series of randomised controlled trails (RCTs) have demonstrated the benefit of endovascular thrombectomy (EVT) on functional outcome for the participants who had acute ischaemic stroke (AIS) with occlusion of a proximal intracranial artery in the anterior circulation. The characteristics of the people enrolled in these RCTs have been used to define recommended criteria to select patients for thrombectomy in clinical practice. The initial group of RCTs largely enrolled participants early after AIS (mostly under 6 hours) who had National Institutes of Health stroke scale scores ≥6 (range 0–42 with lowe...
Source: Journal of Neurology, Neurosurgery and Psychiatry - September 14, 2023 Category: Neurosurgery Authors: Powers, W. Tags: Editorial commentaries Source Type: research

Clot-based time attenuation curve as a novel imaging predictor of mechanical thrombectomy functional outcome in acute ischemia stroke
ConclusionsThrombus TAC on CTP were found to be a promising new imaging biomarker to predict the outcomes of MT in AIS.Clinical relevance statementThis study revealed that clot-based time attenuation curve based on admission perfusion CT could reflect the permeability and composition of thrombus and, also, provide valuable information to predict the clinical outcomes of mechanical thrombectomy in patients with acute ischemia stroke.Key Points• Two time-attenuation curves distributions achieved strong correlations (|r|= 0.627, p <  0.001) with histopathological results.• The unimodal time-attenuation curve was ...
Source: European Radiology - September 14, 2023 Category: Radiology Source Type: research

Direct oral anticoagulants versus vitamin K antagonists: Which one is more effective in atrial fibrillation
CONCLUSIONS: Our meta-analysis demonstrates that in patients undergoing bioprosthetic valve surgery and presenting with AF afterward, DOAC and VKA are similar regarding life-threatening and all-cause mortality outcomes, including major bleeding, stroke, and intracranial hemorrhage.PMID:37697799 | DOI:10.1177/02676591231202383
Source: Perfusion - September 12, 2023 Category: Cardiovascular & Thoracic Surgery Authors: Alireza Khodadadiyan Kimia Jazi Hamed Bazrafshan Drissi Helia Bazroodi Mina Mashayekh Erfan Sadeghi Ghazal Gholamabbas Mehdi Bazrafshan Mahdi Rahmanian Source Type: research

Personalised simulation of hemodynamics in cerebrovascular disease: lessons learned from a study of diagnostic accuracy
In this study, we performed the first quantitative validation of a simulation-based precision medicine framework to assess cerebral hemodynamics in patients with ICAD against clinical standard perfusion imaging. In a retrospective analysis, we used a 0-dimensional simulation model to detect brain areas that are hemodynamically vulnerable to subsequent stroke. The main outcome measures were sensitivity, specificity, and area under the receiver operating characteristics curve (ROC AUC) of the simulation to identify brain areas vulnerable to subsequent stroke as defined by quantitative measurements of relative mean transit ti...
Source: Frontiers in Neurology - September 12, 2023 Category: Neurology Source Type: research

CT Perfusion Does Not Modify the Effect of Reperfusion in Patients with Acute Ischemic Stroke Undergoing Endovascular Treatment in the ESCAPE-NA1 Trial INTERVENTIONAL
CONCLUSIONS: CTP did not modify the effect of near-complete reperfusion on clinical outcomes. Thus, CTP cannot explain why some patients with near-complete reperfusion have poor clinical outcomes.
Source: American Journal of Neuroradiology - September 11, 2023 Category: Radiology Authors: Rex, N. B., McDonough, R. V., Ospel, J. M., Kashani, N., Sehgal, A., Fladt, J. C., McTaggart, R. A., Nogueira, R., Menon, B., Demchuk, A. M., Tymianski, M., Hill, M. D., Goyal, M., on behalf of the ESCAPE-NA1 Investigators Tags: INTERVENTIONAL Source Type: research

Intra-Arterial Thrombolysis is Associated with Delayed Reperfusion of Remaining Vessel Occlusions following Incomplete Thrombectomy INTERVENTIONAL
CONCLUSIONS: Rescue intra-arterial thrombolytics is associated with delayed reperfusion of remaining vessel occlusions following incomplete mechanical thrombectomy. The value of intra-arterial thrombolytics as a potential therapy for incomplete reperfusions after mechanical thrombectomy should be assessed in the setting of randomized controlled trials.
Source: American Journal of Neuroradiology - September 11, 2023 Category: Radiology Authors: Mujanovic, A., Kurmann, C. C., Serrallach, B. L., Dobrocky, T., Meinel, T. R., Windecker, D., Grunder, L., Beyeler, M., Seiffge, D. J., Pilgram-Pastor, S., Arnold, M., Piechowiak, E. I., Gralla, J., Fischer, U., Kaesmacher, J. Tags: INTERVENTIONAL Source Type: research