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Similar Publications

Upper thermal tolerance and population implications for the Magdalena River stingray Potamotrygon magdalenae.

J Fish Biol

June 2024

Fundación colombiana para la investigación y conservación de tiburones y rayas, SQUALUS, Cali, Colombia.

Knowledge of thermal tolerance limits provides important clues to the capacity of a species to withstand acute and chronic thermal changes. Climate models predict the increase and intensification of events such as heat waves, therefore understanding the upper thermal limits that a species can tolerate has become of utmost importance. We measured the upper thermal tolerance of the endemic Magdalena river stingray Potamotrygon magdalenae acclimated to experimental conditions, and then used critical thermal methodology to find the temperature at which an organism reaches a critical endpoint where locomotory activity becomes disorganized and the animal loses its ability to escape from conditions that will promptly lead to its death.

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Objectives: Patients sometimes present with high cervical internal carotid artery (ICA) stenosis. This study demonstrates the usefulness of the transstyloid approach to expose the distal ICA by dissection of the styloid diaphragm covering the distal cervical ICA for carotid endarterectomy (CEA). In particular, the possible exposure length achieved by this approach was investigated using cadaveric heads.

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A sting in the tail: An embedded stingray spine in a mid-1st millennium AD adult male skeleton from Rebun Island, Hokkaido, Japan.

Int J Paleopathol

September 2022

Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Uehara 207, Nishihara, Okinawa 903-0215 Japan.

Objectives: We report here a stingray spine (Dasyatidae) found embedded in the femur of a male skeleton from the archaeological site of Uedomari-5, Rebun Island, Hokkaido, Japan.

Materials: A single well-preserved but incomplete human skeleton.

Methods: Macroscopic observation and low power magnification, CT imaging, radiocarbon dating and stable isotope (carbon, nitrogen) analysis.

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Background: The feasibility and long-term outcomes of the CrossBoss/Stingray for treating coronary chronic total occlusions (CTO) with distal diffuse disease landing zone remain unclear.

Methods: Consecutive CTO patients with distal diffuse lesions that underwent percutaneous coronary intervention by the CrossBoss/Stingray system at Xijing Hospital from April 2016 to October 2020, were included. Patients were analyzed by two groups according to the extent of stenosis in the distal landing zone: 50%-70% stenosis (moderate stenosis group) and >70% stenosis (severe stenosis group).

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Background: Device-based antegrade dissection re-entry (ADR) and parallel wire technique (PWT) are two important techniques in the antegrade approach in percutaneous coronary intervention (PCI) of chronic total occlusion (CTO). The study is aimed to compare the procedural and mid-term outcomes between device-based ADR using the CrossBoss/Stingray system and PWT in CTO PCI.

Methods: Data was retrospectively collected from consecutive patients who underwent CTO PCI using device-based ADR or PWT.

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