Objectives: The purpose of this study was to evaluate the differences in transient thermal response (TTR) among various types of commercial esophageal temperature probes (ETPs) in the United States in an experimental model.
Background: There is little information regarding the variation in TTR among various commercial ETPs that are approved for atrial fibrillation ablation.
Methods: We compared various thermodynamic characteristics including, mean thermal time constant (τ), time to rise 1°C (T), time to peak temperature (T), and decay time among 22 different ETPs. Each probe was submerged in a constant-temperature water bath maintained at 37 ± 0.5°C and then quickly (<0.5 s) submerged into another water bath at 45 ± 0.5°C. The experiments were repeated 3 times with each probe. TTR properties were compared on the basis of probe size, design, and number of sensors.
Results: The τ was significantly higher with the larger 24- and 18-F ETPs compared with the smaller 9-F ETPs. Compared with the 18-F probe, T (11.9 s vs. 5 s), T (40.3 s vs. 14.4 s), and T (92.4 s vs. 32.4 s) was shorter with the 9-F ETPs. Solid-shaft ETPs had shorter τ (8.6 s vs. 20.5 s), T (4.4 s vs. 10.1 s) and T (13.5 s vs. 32.5 s) compared with acoustascopes. Multisensor ETPs had shorter τs (3.9 s vs. 9.1 s), T (2.3 s vs. 5 s), and T (6.2 s vs. 14.4 s) compared with single-sensor ETPs.
Conclusions: There is a significant variation in TTR among the various commercially available ETPs. The use of certain ETPs might result in underestimation of luminal esophageal temperature, which can potentially lead to adverse events.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jacep.2019.07.013 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Excited-State Carrier Dynamics in Semiconducting Heterostructures from Self-Sorted NIR Active Dyes.
Small
January 2025
Department of Polymers & Functional Materials, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad, Telangana, 500007, India.
Heterostructures comprise two or more different semiconducting materials stacked either as co-assemblies or self-sorted based on their dynamics of aggregates. However, self-sorting in heterostructures is rather significant in improving the short exciton diffusion length and charge separation. Despite small organic molecules being known for their self-sorting nature, macrocyclic are hitherto unknown owing to unrestrained assemblies from extended π-conjugated systems.
View Article and Find Full Text PDFPrognostic value of biomarkers of ischaemia in patients with peripheral arterial disease following endovascular revascularisation.
Vasa
January 2025
Department of Vascular Diseases, University Medical Centre Ljubljana, Slovenia.
Our aim was to evaluate the prognostic value of detectable high-sensitivity cardiac troponin I (hs-cTnI) and ischaemia-modified albumin (IMA) in predicting all-cause death or non-fatal ischaemic events in patients with PAD after endovascular revascularisation of the lower limbs. Patients who underwent successful endovascular revascularisation for chronic limb-threatening ischaemia (CLTI) or disabling intermittent claudication (IC) were prospectively included. Pre-procedural levels of hs-cTnI and IMA were measured, and patients were followed for one year for the occurrence of the composite outcome of all-cause death, non-fatal myocardial infarction, new-onset angina, non-fatal ischaemic stroke, transient ischaemic attack, or progression of PAD.
View Article and Find Full Text PDFMaladaptive changes in the homeostasis of AEA-TRPV1/CB1R induces pain-related hyperactivity of nociceptors after spinal cord injury.
Cell Biosci
January 2025
State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, 200438, People's Republic of China.
Background: Neuropathic pain resulting from spinal cord injury (SCI) is associated with persistent hyperactivity of primary nociceptors. Anandamide (AEA) has been reported to modulate neuronal excitability and synaptic transmission through activation of cannabinoid type-1 receptors (CB1Rs) and transient receptor potential vanilloid 1 (TRPV1). However, the role of AEA and these receptors in the hyperactivity of nociceptors after SCI remains unclear.
View Article and Find Full Text PDFExcited state dynamics of azanaphthalenes reveal opportunities for the rational design of photoactive molecules.
Commun Chem
January 2025
Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, UK.
Various photoactive molecules contain motifs built on aza-aromatic heterocycles, although a detailed understanding of the excited state photophysics and photochemistry in such systems is not fully developed. To help address this issue, the non-adiabatic dynamics operating in azanaphthalenes under hexane solvation was studied following 267 nm excitation using ultrafast transient absorption spectroscopy. Specifically, the species quinoline, isoquinoline, quinazoline, quinoxaline, 1,6-naphthyridine, and 1,8-naphthyridine were investigated, providing a systematic variation in the relative positioning of nitrogen heteroatom centres within a bicyclic aromatic structure.
View Article and Find Full Text PDFComparing the efficacy of serotonin and EGTA on postpartum hypocalcemia.
J Dairy Sci
January 2025
Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, 53701. Electronic address:
Inducing a transient state of hypocalcemia prepartum mobilizes stored calcium (Ca) before the abrupt demand for Ca at parturition thus more tightly regulating postpartum hypocalcemia. Prepartum transient hypocalcemia can be achieved through intravenous infusions of either the precursor to serotonin, 5-hydroxy-tryptophan (5HTP) or a Ca chelating agent, ethylene-glycol-tetraacetic acid (EGTA). This study aimed to compare the ability of 5HTP and EGTA treatments to prevent postpartum hypocalcemia.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!