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  1. Article ; Online: Unprovoked Arterial Thrombosis: Clinical Presentation of Fibromuscular Dysplasia.

    Picca, Andrew / Sankar, Amanda D / Jacobson-Kelly, Amanda E / Rodriguez, Vilmarie

    Clinical pediatrics

    2023  Volume 63, Issue 2, Page(s) 235–238

    MeSH term(s) Humans ; Fibromuscular Dysplasia/diagnosis ; Fibromuscular Dysplasia/diagnostic imaging ; Thrombosis/diagnostic imaging ; Thrombosis/drug therapy ; Thrombosis/etiology
    Language English
    Publishing date 2023-04-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207678-0
    ISSN 1938-2707 ; 0009-9228
    ISSN (online) 1938-2707
    ISSN 0009-9228
    DOI 10.1177/00099228231169098
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Pediatric arterial thrombosis: A single-institution cohort study of patient characteristics and thrombosis outcomes.

    Abdelghani, Eman / Agarwal, Shreya / Stanek, Joseph / Sankar, Amanda / Kerlin, Bryce A / Rodriguez, Vilmarie

    Pediatric blood & cancer

    2023  Volume 71, Issue 1, Page(s) e30756

    Abstract: Background: Arterial thrombosis (AT) is an increasingly recognized complication in pediatrics. Consensus clinical practice guidelines suggest immediate removal of the indwelling arterial catheter and a short course (5-7 days) of anticoagulation. The ... ...

    Abstract Background: Arterial thrombosis (AT) is an increasingly recognized complication in pediatrics. Consensus clinical practice guidelines suggest immediate removal of the indwelling arterial catheter and a short course (5-7 days) of anticoagulation. The optimal duration and modality of antithrombotic therapy in children are yet to be determined.
    Aims: Describe treatment patterns and outcomes in pediatric patients with AT and explore predictors for complete thrombus resolution or long-term complications.
    Methods: Single-institution retrospective study. Patients were identified by ICD-9 and ICD-10 codes for the diagnosis of AT or reports of AT on ultrasound from January 1, 2012, to October 1, 2022. Descriptive and logistic regression analyses were used.
    Results: 101 patients were included. The median age was 2.2 months. The most common underlying diagnoses were congenital heart disease (39.6%) and infection (22.8%). A majority of patients had symptomatic thrombosis in an extremity, and 78% were catheter-associated. 81% of patients received anticoagulation with a median duration of 35 days. Out of the 70 patients who were treated with anticoagulation alone and had a follow-up imaging, 70% had complete resolution after 90 days of anticoagulation. No clear predictors of complete resolution were identified. Eighteen patients had long-term sequelae secondary to arterial insufficiency. Those with infection-associated AT were more likely to have long-term complications. The major and clinically relevant non-major bleeding rate was 11%.
    Conclusion: Duration of anticoagulation was widely variable, and 70% of patients achieved complete resolution by 90 days of anticoagulation. A significant proportion of patients developed long-term sequelae secondary to arterial insufficiency. Sepsis/infection at the time of diagnosis with AT was more likely to be associated with long-term complications.
    MeSH term(s) Humans ; Child ; Infant ; Cohort Studies ; Retrospective Studies ; Anticoagulants/therapeutic use ; Thrombosis/etiology ; Thrombosis/drug therapy ; Catheterization/adverse effects ; Arterial Occlusive Diseases/complications ; Treatment Outcome
    Chemical Substances Anticoagulants
    Language English
    Publishing date 2023-10-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2131448-2
    ISSN 1545-5017 ; 1545-5009
    ISSN (online) 1545-5017
    ISSN 1545-5009
    DOI 10.1002/pbc.30756
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Intracardiac thrombi in pediatrics: anticoagulation approach and treatment outcomes.

    Agarwal, Shreya / Abdelghani, Eman / Stanek, Joseph R / Sankar, Amanda / Cua, Clifford L / Kerlin, Bryce A / Rodriguez, Vilmarie

    Research and practice in thrombosis and haemostasis

    2023  Volume 7, Issue 8, Page(s) 102266

    Abstract: Background: Intracardiac thrombi (ICT) are associated with significant morbidity and mortality. Anticoagulation is the first line of treatment and may be complemented by thrombectomy or thrombolysis. However, optimal anticoagulant duration remains ill- ... ...

    Abstract Background: Intracardiac thrombi (ICT) are associated with significant morbidity and mortality. Anticoagulation is the first line of treatment and may be complemented by thrombectomy or thrombolysis. However, optimal anticoagulant duration remains ill-defined. High-risk features of ICT that may warrant long-term anticoagulation therapy have not been established.
    Objectives: To describe anticoagulation duration and patterns of ICT resolution. To identify potential risk factors for persistent ICT despite anticoagulation.
    Methods: A single-institution retrospective chart review identified patients diagnosed with ICT by echocardiogram between January 2014 and March 2022. Descriptive statistics and logistic regression were used.
    Results: Fifty-one patients with ICT were identified. Median age at diagnosis was 9.2 years (IQR, 0.4-15.2). The most common underlying diagnoses were congenital heart disease (41%), infection (25%), and malignancy (24%). The majority of ICT were in the right atrium (
    Conclusion: Our study demonstrates the wide variability in duration of anticoagulation for children with ICT. Majority of the individuals benefit from 3-to-6 month treatment; however, individuals with a central venous line may benefit from a longer course of anticoagulation. Further large-scale studies are recommended to validate our findings.
    Language English
    Publishing date 2023-11-24
    Publishing country United States
    Document type Journal Article
    ISSN 2475-0379
    ISSN (online) 2475-0379
    DOI 10.1016/j.rpth.2023.102266
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A regional anticoagulation program improves safety and outcomes for both children and adults.

    Rodriguez, Vilmarie / Stanek, Joseph / Cua, Clifford L / Sankar, Amanda / Giver, Jean / Monda, Kay / Canini, Joan / Dunn, Amy L / Kerlin, Bryce A

    Journal of thrombosis and thrombolysis

    2023  Volume 56, Issue 1, Page(s) 27–36

    Abstract: Background: Evidence-based anticoagulation programs usually serve a local, adult patient population. Here we report outcomes for a regional combined pediatric-adult program.: Aims: The aims of this study were: (1) Compare the pre- vs. post- ... ...

    Abstract Background: Evidence-based anticoagulation programs usually serve a local, adult patient population. Here we report outcomes for a regional combined pediatric-adult program.
    Aims: The aims of this study were: (1) Compare the pre- vs. post-implementation quality of therapy (% time in therapeutic range (%TTR) and compliance). (2) Assess anticoagulant-relevant outcomes (bleeding and thrombotic complications).
    Methods: Data were collected for the years 2014-2019. Rosendaal linear interpolation was used to calculate %TTR. Bleeding complications were categorized using ISTH-SSC standard nomenclature and new thrombotic events were reviewed.
    Results: The patients were divided into a long-term warfarin group (N = 308), 80.2% of whom had cardiac-related therapeutic indications (median age 24y), and a second group (N = 114) comprised of short-term and non-warfarin long-term anticoagulation (median age 16y). Median %TTR for those on long-term warfarin was 78.9%. The incidence of major and clinically relevant non-major bleeding events was 1.65 and 2.43 /100 person-years of warfarin use, respectively. Thromboembolism (TE) incidence was 0.78/100 patient-years of warfarin use. Neither bleeding nor thrombosis was associated with %TTR (p = 0.48). Anticoagulant indication was the only variable associated with bleeding risk (p = 0.005). The second group had no on-therapy TE events but 7.9% experienced bleeding. Complete data were available for a randomly sampled pre-program warfarin group (N = 26). Median %TTR improved from 17.5 to 87% pre- vs. post-implementation. Similarly, compliance (defined as ≥ 1 INR/month) improved by 34.3%.
    Conclusions: In conclusion, this program significantly improved and sustained %TTR and compliance. The lack of association between bleeding and thrombosis events and %TTR may be related to the high median %TTR (> 70%) achieved by this approach.
    MeSH term(s) Humans ; Child ; Adult ; Young Adult ; Adolescent ; International Normalized Ratio ; Warfarin/adverse effects ; Anticoagulants/adverse effects ; Blood Coagulation ; Hemorrhage/chemically induced ; Hemorrhage/drug therapy ; Thromboembolism/drug therapy ; Thrombosis/drug therapy ; Treatment Outcome
    Chemical Substances Warfarin (5Q7ZVV76EI) ; Anticoagulants
    Language English
    Publishing date 2023-04-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1230645-9
    ISSN 1573-742X ; 0929-5305
    ISSN (online) 1573-742X
    ISSN 0929-5305
    DOI 10.1007/s11239-023-02806-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: The evolution of recombinant factor replacement for hemophilia.

    Sankar, Amanda D / Weyand, Angela C / Pipe, Steven W

    Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis

    2019  Volume 58, Issue 5, Page(s) 596–600

    Abstract: Hemophilia A and Hemophilia B are the most common of the severe bleeding disorders and are caused by a deficiency in blood clotting factor VIII or factor IX respectively. Factor replacement therapy has been the cornerstone of treatment to treat life ... ...

    Abstract Hemophilia A and Hemophilia B are the most common of the severe bleeding disorders and are caused by a deficiency in blood clotting factor VIII or factor IX respectively. Factor replacement therapy has been the cornerstone of treatment to treat life threatening bleeds and prevent joint disease. The treatment of hemophilia has evolved tremendously over the past five decades from fresh frozen plasma as the only available therapy to more specific plasma-derived and recombinant-derived factor replacement. Now due to innovations in bioengineering, there are even more efficacious factor replacement options available to patients. Here we review these recent advancements and their impact on the treatment and management of hemophilia.
    MeSH term(s) Factor IX/genetics ; Factor IX/metabolism ; Factor IX/therapeutic use ; Factor VIII/genetics ; Factor VIII/metabolism ; Factor VIII/therapeutic use ; Hemophilia A/blood ; Hemophilia A/drug therapy ; Hemophilia A/genetics ; Hemophilia B/blood ; Hemophilia B/drug therapy ; Hemophilia B/genetics ; Humans ; Recombinant Proteins/therapeutic use
    Chemical Substances Recombinant Proteins ; F8 protein, human (839MOZ74GK) ; Factor VIII (9001-27-8) ; Factor IX (9001-28-9)
    Language English
    Publishing date 2019-08-09
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2046795-3
    ISSN 1878-1683 ; 1473-0502
    ISSN (online) 1878-1683
    ISSN 1473-0502
    DOI 10.1016/j.transci.2019.08.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hemostatic and Thrombotic Considerations in the Diagnosis and Management of Childhood Arterial Ischemic Stroke: A Narrative Review.

    Kumar, Riten / Sun, Lisa R / Rodriguez, Vilmarie / Sankar, Amanda / Sharma, Mukta / Meoded, Avner / Brandão, Leonardo R / Goldenberg, Neil A

    Seminars in pediatric neurology

    2022  Volume 43, Page(s) 101003

    Abstract: Although rare in children, arterial ischemic stroke (AIS) is associated with increased mortality and neurological morbidity. The incidence of AIS after the neonatal period is approximately 1-2/100,000/year, with an estimated mortality of 3-7%. A ... ...

    Abstract Although rare in children, arterial ischemic stroke (AIS) is associated with increased mortality and neurological morbidity. The incidence of AIS after the neonatal period is approximately 1-2/100,000/year, with an estimated mortality of 3-7%. A significant proportion of children surviving AIS experience life-long neurological deficits including hemiparesis, epilepsy, and cognitive delays. The low incidence of childhood AIS coupled with atypical clinical-presentation and lack of awareness contribute to delay in diagnosis and consequently, the early initiation of treatment. While randomized-clinical trials have demonstrated the efficacy and safety of reperfusion therapies including thrombolysis and endovascular thrombectomy in appropriately-selected adult patients, similar data for children are unavailable. Consequently, clinical decisions surrounding reperfusion therapy in childhood AIS are either extrapolated from adult data or based on local experience. The etiology of childhood AIS is multifactorial, often occurring in the setting of both acquired and congenital risk-factors including thrombophilia. While multiple studies have investigated the association of thrombophilia with incident childhood AIS, its impact on stroke recurrence and therefore duration and intensity of antithrombotic therapy is less clear. Despite these limitations, a significant progress has been made over the last decade in the management of childhood AIS. This progress can be attributed to international consortiums, and in selected cohorts to federally-funded clinical trials. In this narrative review, the authors have systematically appraised the literature and summarize the hemostatic and thrombotic considerations in the diagnosis and management of childhood AIS focusing on the evidence supporting reperfusion therapies, relevance of thrombophilia testing, and duration and drug choices for secondary-prophylaxis.
    MeSH term(s) Child ; Infant, Newborn ; Humans ; Brain Ischemia/complications ; Brain Ischemia/diagnosis ; Brain Ischemia/therapy ; Ischemic Stroke ; Hemostatics ; Stroke/diagnosis ; Stroke/etiology ; Stroke/therapy ; Thrombophilia/complications ; Randomized Controlled Trials as Topic
    Chemical Substances Hemostatics
    Language English
    Publishing date 2022-10-04
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 1290000-x
    ISSN 1558-0776 ; 1071-9091
    ISSN (online) 1558-0776
    ISSN 1071-9091
    DOI 10.1016/j.spen.2022.101003
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  7. Article ; Online: Multisystem Inflammatory Syndrome in Children and Cardiac Involvement: A Quaternary Center Experience.

    Cruz Vidal, Diego / Lee, Simon / Ardoin, Stacy P / Dalmacy, Djhenne / Chaparro, Juan / Blaney, Cristin / Rodriguez, Vilmarie / Sankar, Amanda / Akoghlanian, Shoghik / Lisciandro, Richard / Washam, Matthew / Abraham, Roshini S / Leber, Amy / Eby, Meika / Bennett, Berkeley / Erdem, Guliz

    The Pediatric infectious disease journal

    2024  Volume 43, Issue 5, Page(s) e160–e163

    Abstract: We prospectively analyzed clinical and laboratory characteristics associated with cardiac involvement and severe presentation in multisystem inflammatory syndrome in children. Of 146 patients, 66 (45.2%) had cardiac dysfunction and 26 (17.8%) had ... ...

    Abstract We prospectively analyzed clinical and laboratory characteristics associated with cardiac involvement and severe presentation in multisystem inflammatory syndrome in children. Of 146 patients, 66 (45.2%) had cardiac dysfunction and 26 (17.8%) had coronary artery abnormalities. Lower serum albumin levels, absolute lymphocyte and platelet counts, and elevated ferritin, fibrinogen, d-dimer and interleukin-6 levels were associated with cardiac dysfunction. Possible treatment complications were identified.
    MeSH term(s) Child ; Humans ; COVID-19/complications ; Interleukin-6 ; Laboratories ; Heart Diseases ; Systemic Inflammatory Response Syndrome/diagnosis
    Chemical Substances Interleukin-6
    Language English
    Publishing date 2024-02-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392481-6
    ISSN 1532-0987 ; 0891-3668
    ISSN (online) 1532-0987
    ISSN 0891-3668
    DOI 10.1097/INF.0000000000004266
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Line Associated Thrombosis in Pediatric Patients With NF-κB Pathway Variants.

    Michniacki, Thomas F / Atchison, Christie / Walkovich, Kelly / Sankar, Amanda / McGrath, Mary / Weyand, Angela C

    Journal of pediatric hematology/oncology

    2020  Volume 43, Issue 3, Page(s) e436–e437

    Abstract: Our report explores the complex role that nuclear factor-kappa B (NF-κB) plays in thrombosis formation, inflammation, and immunity; while additionally demonstrating that patients with NF-κB pathway pathogenic variants appear to carry a substantial ... ...

    Abstract Our report explores the complex role that nuclear factor-kappa B (NF-κB) plays in thrombosis formation, inflammation, and immunity; while additionally demonstrating that patients with NF-κB pathway pathogenic variants appear to carry a substantial thrombotic risk, particularly when secondary thrombotic risk factors are present. We propose that prophylactic anticoagulation should be strongly considered in such patients during high-risk situations and provide additional hematologic management strategies for those with NF-κB pathway alterations. We hope our work also calls to attention the potential need for a broader assessment of venous thromboembolism risk in patients with immune dysregulation to better delineate which patient populations may benefit from anticoagulation prophylaxis.
    MeSH term(s) Anticoagulants/therapeutic use ; Child, Preschool ; Heparin, Low-Molecular-Weight/therapeutic use ; Humans ; Infant, Newborn ; Male ; NF-kappa B/genetics ; Point Mutation ; Polymorphism, Single Nucleotide ; Thrombosis/drug therapy ; Thrombosis/genetics ; Whole Exome Sequencing
    Chemical Substances Anticoagulants ; Heparin, Low-Molecular-Weight ; NF-kappa B
    Language English
    Publishing date 2020-02-03
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 1231152-2
    ISSN 1536-3678 ; 1077-4114 ; 0192-8562
    ISSN (online) 1536-3678
    ISSN 1077-4114 ; 0192-8562
    DOI 10.1097/MPH.0000000000001739
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Drive-Through Anticoagulation Clinic During the COVID-19 Pandemic.

    Giver, Jean / Dunn, Amy L / Sankar, Amanda / Stanek, Joseph / Monda, Kay / Canini, Joan / Kerlin, Bryce A / Rodriguez, Vilmarie

    The journal for nurse practitioners : JNP

    2021  Volume 18, Issue 1, Page(s) 92–96

    Abstract: An innovative approach to anticoagulation management during the COVID-19 pandemic was used at our center that allowed patients to stay in their vehicle while our anticoagulation advanced practice registered nurse obtained blood for point-of-care ... ...

    Abstract An innovative approach to anticoagulation management during the COVID-19 pandemic was used at our center that allowed patients to stay in their vehicle while our anticoagulation advanced practice registered nurse obtained blood for point-of-care international normalized ratio (INR) testing while education and counseling were completed. A significant improvement in the median percentage of INR within the therapeutic range was observed among the patients who used the drive-through clinic. A small group of patients improved compliance to anticoagulation monitoring. Clinical care models, such as this clinic approach may improve patient compliance and adherence to anticoagulation beyond the pandemic needs.
    Language English
    Publishing date 2021-09-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2202063-9
    ISSN 1878-058X ; 1555-4155
    ISSN (online) 1878-058X
    ISSN 1555-4155
    DOI 10.1016/j.nurpra.2021.08.026
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  10. Article ; Online: Modulation of the HIF2α-NCOA4 axis in enterocytes attenuates iron loading in a mouse model of hemochromatosis.

    Das, Nupur K / Jain, Chesta / Sankar, Amanda / Schwartz, Andrew J / Santana-Codina, Naiara / Solanki, Sumeet / Zhang, Zhiguo / Ma, Xiaoya / Parimi, Sanjana / Rui, Liangyou / Mancias, Joseph D / Shah, Yatrik M

    Blood

    2021  Volume 139, Issue 16, Page(s) 2547–2552

    Abstract: Intestinal iron absorption is activated during increased systemic demand for iron. The best-studied example is iron deficiency anemia, which increases intestinal iron absorption. Interestingly, the intestinal response to anemia is very similar to that of ...

    Abstract Intestinal iron absorption is activated during increased systemic demand for iron. The best-studied example is iron deficiency anemia, which increases intestinal iron absorption. Interestingly, the intestinal response to anemia is very similar to that of iron overload disorders, as both the conditions activate a transcriptional program that leads to a hyperabsorption of iron via the transcription factor hypoxia-inducible factor 2α (HIF2α). However, pathways for selective targeting of intestine-mediated iron overload remain unknown. Nuclear receptor coactivator 4 (NCOA4) is a critical cargo receptor for autophagic breakdown of ferritin and the subsequent release of iron, in a process termed ferritinophagy. Our work demonstrates that NCOA4-mediated intestinal ferritinophagy is integrated into systemic iron demand via HIF2α. To demonstrate the importance of the intestinal HIF2α/ferritinophagy axis in systemic iron homeostasis, whole-body and intestine-specific NCOA4-/- mouse lines were generated and assessed. The analyses revealed that the intestinal and systemic response to iron deficiency was not altered after disruption of intestinal NCOA4. However, in a mouse model of hemochromatosis, ablation of intestinal NCOA4 was protective against iron overload. Therefore, NCOA4 can be selectively targeted for the management of iron overload disorders without disrupting the physiological processes involved in the response to systemic iron deficiency.
    MeSH term(s) Anemia ; Animals ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; Enterocytes/metabolism ; Hemochromatosis/genetics ; Iron/metabolism ; Iron Overload ; Mice ; Nuclear Receptor Coactivators/genetics ; Transcription Factors/metabolism
    Chemical Substances Basic Helix-Loop-Helix Transcription Factors ; NcoA4 protein, mouse ; Nuclear Receptor Coactivators ; Transcription Factors ; endothelial PAS domain-containing protein 1 (1B37H0967P) ; Iron (E1UOL152H7)
    Language English
    Publishing date 2021-10-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood.2021013452
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