Publications by authors named "H W Sievert"

Background: The Magenta Elevate is a 9-F, self-expanding, catheter-mounted pump delivered sheathed through a commercially available 10-F femoral introducer over the wire to the left ventricle (LV), providing temporary hemodynamic support up to an equivalent of normal cardiac output.

Objectives: The authors sought to assess the feasibility and outcomes of Elevate-supported high-risk percutaneous coronary intervention (HR-PCI) in a first-in-human study and study the hemodynamic impact of high-output support during prolonged interventional left main coronary artery (LM) occlusions.

Methods: In this study, 14 patients underwent Elevate-supported HR-PCI, with 8 patients undergoing 20 prolonged (39 ± 16 seconds) balloon occlusions of an unprotected LM.

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Background: Covered stent correction for a sinus venosus atrial septal defect (SVASD) was first performed in 2009. This innovative approach was initially viewed as experimental and was reserved for highly selected patients with unusual anatomic variants. In 2016, increasing numbers of procedures began to be performed, and in several centers, it is now offered as a standard of care option alongside surgical repair.

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Background: Ultrasound renal sympathetic denervation (uRDN) reduces blood pressure (BP) in the absence and presence of antihypertensive treatment at 2 months. Beyond 3 years, there is a lack of follow-up data. This study investigated the long-term safety and efficacy of uRDN.

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Article Synopsis
  • - Tenosynovial giant cell tumor (TGCT) is a rare tumor that arises from the synovium in joints and tendon sheaths, often associated with genetic changes involving the CSF1 gene; symptoms like pain and swelling are common but not specific, requiring MRI and biopsy for accurate diagnosis.
  • - A case study of a 45-year-old man initially diagnosed with Erdheim-Chester disease was later correctly identified as TGCT through whole exome sequencing, which showed a CSF1::GAPDHP64 fusion; he was treated successfully with pegylated interferon and imatinib, stabilizing his condition.
  • - Single-cell transcriptome analysis highlighted seven cell clusters and revealed that neoplastic cells attract macroph
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