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New evidence for baroreflex and respiratory chemoreflex mediated cerebral sympathetic activation in humans.
J Appl Physiol (1985)
December 2024
Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada.
The brain is highly innervated by sympathetic nerve fibres; however, their physiological purpose is poorly understood. We hypothesized that unilateral cerebral norepinephrine (NE) spillover, an index of cerebral sympathetic nerve activity (SNA), would be elevated when engaging the baroreflex [via lower-body negative pressure (LBNP; -20 and -40 Torr)] and respiratory chemoreflexes [via carbon dioxide (CO) administration (+8 Torr)], independently, and in combination. Twelve young and healthy participants (5 females) underwent simultaneous blood sampling from the right radial artery and internal jugular vein.
View Article and Find Full Text PDFMRSA Cellulitis with Orbital and Retinal Abscesses Resulting in Lemierre Syndrome Following Eyebrow Piercing.
Ophthalmic Plast Reconstr Surg
December 2024
Department of Ophthalmology, Brooke Army Medical Center, San Antonio, Texas.
We describe a case of orbital cellulitis with abscess formation following eyebrow piercing complicated by internal jugular vein thrombosis and subretinal abscesses requiring enucleation with orbital abscess drainage. The popularity of body piercing is increasing and physicians should be familiar with the possibility and management of vision-threatening complications of facial piercing. Following left eyebrow piercing, a 20-year-old female experienced increasing periorbital swelling, erythema, chemosis, orbital pain, decreased vision, and concomitant fever, chills, and rhinorrhea.
View Article and Find Full Text PDFJejunal artery and vein positioning in free jejunal transfer: Surgical considerations and clinical implications.
J Plast Reconstr Aesthet Surg
November 2024
Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Tokyo, Japan.
Background: Previous computed tomography studies have reported that the superior mesenteric artery is often located ventrally to the superior mesenteric vein; however, the precise location of the peripheral jejunal arteriovenous system is unknown. This study investigated the arteriovenous positioning of the free jejunal flaps during reconstructive surgery.
Methods: This retrospective cohort study included 78 patients who underwent free jejunal flap reconstruction between June 2021 and May 2023.
Non-invasive removal of a misplaced and knotted guidewire during ultrasound-guided central venous catheter insertion in a hybrid operating room: a case report.
JA Clin Rep
December 2024
Department of Anesthesiology, Yokohama Municipal Citizen's Hospital, Yokohama, Japan.
Background: The standard of care for placement of a central venous catheter (CVC) includes a real-time ultrasound (US)-guided technique. We describe a rare case in which the guidewire penetrated the posterior wall of the vessel, forming a knot, which precluded simple removal. This occurred despite the procedure being performed under real-time US guidance.
View Article and Find Full Text PDFCollet-Sicard Syndrome Secondary to Tuberculosis of the Base of the Skull: A Case Report.
Cureus
November 2024
Internal Medicine, Atal Bihari Vajpayee Institute of Medical Sciences and Dr. Ram Manohar Lohia Hospital, New Delhi, IND.
Collet-Sicard syndrome, resulting from the involvement of all four lower cranial nerves, is an extremely rare condition. This case report details a 69-year-old female patient who presented with classic signs and symptoms of lower cranial nerve palsies (IX, X, XI, and XII) and was subsequently diagnosed with Collet-Sicard syndrome secondary to tuberculosis at the base of the skull. A contrast-enhanced MRI of the neck revealed bone marrow edema in the clivus, occipital condyle, and C1 vertebra, along with diffuse surrounding soft tissue swelling and collection, findings consistent with tuberculosis.
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