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Factors associated with activated clotting time following heparin administration in pediatric cardiopulmonary bypass: A retrospective study.
Perfusion
January 2025
Department of Cardiac Surgery, The University of Tokyo Hospital, Tokyo, Japan.
Introduction: The recently recommended activated clotting time (ACT) to be maintained at the initiation of and during cardiopulmonary bypass (CPB) is ≥480 s. However, the post-unfractionated heparin (UFH) administration ACT occasionally does not exceed 480 s. Therefore, in this study, we retrospectively evaluated the factors influencing post-heparin administration ACT before initiating CPB.
View Article and Find Full Text PDFInhibition of nitric oxide synthase transforms carotid occlusion-mediated benign oligemia into large cerebral infarction.
Theranostics
January 2025
Department of neurology, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea.
It remains unclear why unilateral proximal carotid artery occlusion (UCAO) causes benign oligemia in mice, yet leads to various outcomes (asymptomatic-to-death) in humans. We hypothesized that inhibition of nitric oxide synthase (NOS) both transforms UCAO-mediated oligemia into full infarction and expands pre-existing infarction. Using 900 mice, we i) investigated stroke-related effects of UCAO with/without intraperitoneal administration of the NOS inhibitor (NOSi) N-nitro-L-arginine methyl ester (L-NAME, 400 mg/kg); ii) examined the rescue effect of the NO-donor, molsidomine (200 mg/kg at 30 minutes); and iii) tested the impact of antiplatelet medications.
View Article and Find Full Text PDFCross-species analyses of thymic mimetic cells reveal evolutionarily ancient origins and both conserved and species-specific elements.
Immunity
December 2024
Department of Immunology, Harvard Medical School, Boston, MA, USA. Electronic address:
Thymic mimetic cells are molecular hybrids between medullary-thymic-epithelial cells (mTECs) and diverse peripheral cell types. They are involved in eliminating autoreactive T cells and can perform supplementary functions reflective of their peripheral-cell counterparts. Current knowledge about mimetic cells derives largely from mouse models.
View Article and Find Full Text PDFCan we predict the risk of venous thromboembolism in patients with Cushing's syndrome: a nationwide cohort analysis.
Pituitary
December 2024
Institute of Endocrinology, Beilinson Hospital, Rabin Medical Center, 49100, Petah Tikva, Israel.
Purpose: Patients with Cushing's syndrome (CS) have an increased venous thromboembolism (VTE) risk with most studies focusing on the perioperative period. The purpose of this study was to assess the 5-year VTE risk and identify predictors of VTE at CS diagnosis.
Methods: A comparative nationwide retrospective cohort study of 609 patients (mean age 48.
The dark side of the fibroblastic sleeve: Case report and literature review.
J Vasc Access
December 2024
Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
The fibroblastic sleeve is a structure potentially enveloping any intravascular device. At ultrasound scan, it typically presents as a thin layer of variably echogenic material covering the catheter surface, which usually tends to remain into the vessel after the catheter removal. However, several case reports have documented its migration toward the heart or pulmonary artery after a central venous catheter removal.
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