keyword
https://read.qxmd.com/read/38532344/the-effects-of-an-iv-fluid-bolus-on-mitral-annular-velocity-and-the-assessment-of-diastolic-function-a-prospective-non-randomized-study
#1
JOURNAL ARTICLE
Sebastian Ayala, Orode Badakhsh, David Li, Neal W Fleming
BACKGROUND: Abnormal diastolic function is an independent predictor of adverse postoperative outcomes. Mitral annular tissue Doppler velocity (e') is a key parameter for assessing diastolic function. The purpose of this study was to confirm that an acute increase in preload did not significantly impact the intraoperative measurement of e' and secondarily evaluate the impact of this acute intravascular volume increase on the clinical assessment of diastolic function using a previously described simplified algorithm...
March 26, 2024: BMC Anesthesiology
https://read.qxmd.com/read/38529464/can-currently-available-non-invasive-continuous-blood-pressure-monitors-replace-invasive-measurement-with-an-arterial-catheter
#2
REVIEW
Payton Gore, Hong Liu, Christian Bohringer
Deviations from normal blood pressure (BP) during general anesthesia have been clearly linked to several adverse outcomes. Measuring BP accurately is therefore critically important for producing excellent outcomes in health care. Normal BP does not necessarily guarantee adequate organ perfusion however and adverse events have occurred even when BP seemed adequate. Invasive blood pressure monitoring has recently evolved beyond merely measuring BP. Arterial line-derived pulse contour analysis is used now to assess both cardiac output and stroke volume variation as indices of adequate intravascular volume...
February 2024: Curēus
https://read.qxmd.com/read/38529359/subtle-white-matter-intensity-changes-on-fluid-attenuated-inversion-recovery-imaging-in-patients-with-ischaemic-stroke
#3
JOURNAL ARTICLE
Pedro Cougo, Heber Colares, João Gabriel Farinhas, Mariana Hämmerle, Pedro Neves, Raquel Bezerra, Alex Balduino, Ona Wu, Octavio M Pontes-Neto
Leukoaraiosis is a neuroimaging marker of small-vessel disease that is characterized by high signal intensity on fluid-attenuated inversion recovery MRI. There is increasing evidence from pathology and neuroimaging suggesting that the structural abnormalities that characterize leukoaraiosis are actually present within regions of normal-appearing white matter, and that the underlying pathophysiology of white matter damage related to small-vessel disease involves blood-brain barrier damage. In this study, we aim to verify whether leukoaraiosis is associated with elevated signal intensity on fluid-attenuated inversion recovery imaging, a marker of brain tissue free-water accumulation, in normal-appearing white matter...
2024: Brain communications
https://read.qxmd.com/read/38522225/risk-factors-for-unfavorable-outcome-after-spontaneous-intracerebral-hemorrhage-in-elderly-patients
#4
JOURNAL ARTICLE
Vitalij Zeiser, Farjad Khalaveh, Anna Cho, Andrea Reinprecht, Johannes Herta, Karl Rössler, Christian Dorfer
BACKGROUND: Spontaneous intracerebral hemorrhage (SICH) of the elderly is a devastating form of stroke with a high morbidity and economic burden. There is still a limited understanding of the risk factors for an unfavorable outcome where a surgical therapy may be less meaningful. Thus, the aim of this study is to identify factors associated with unfavorable outcome and time to death in surgically treated elderly patients with SICH. METHODS: We performed a single-center retrospective study of 70 patients (age > 60 years) with SICH operated between 2008 and 2020...
March 22, 2024: Clinical Neurology and Neurosurgery
https://read.qxmd.com/read/38519132/cardiovascular-effects-from-venous-blood-pooling-in-the-lower-limbs-during-prolonged-sitting
#5
JOURNAL ARTICLE
Kathleen Stanford, Alexander Pomeroy, Lee Stoner
PURPOSE: To investigate whether venous blood pooling in the lower limbs from prolonged sitting induces harmful cardiovascular effects by reducing stroke volume (SV) and cardiac output (CO). METHODS: A randomized crossover trial involving 16 participants (mean age = 24.8 years ± 6.0 years, 44% women, 1 dropout) was conducted. The trial consisted of 2 conditions: cuff and noncuff, both involving 2 hours of prolonged sitting with tourniquets placed proximal to each knee...
March 2024: Radiologic Technology
https://read.qxmd.com/read/38511330/influence-of-infarct-morphology-and-patterns-on-cognitive-outcomes-after-endovascular-thrombectomy
#6
JOURNAL ARTICLE
Johanna Maria Ospel, Leon Rinkel, Aravind Ganesh, Andrew Demchuk, Manish Joshi, Alexandre Poppe, Ryan McTaggart, Raul Nogueira, Bijoy Menon, Michael Tymianski, Michael Douglas Hill, Mayank Goyal
BACKGROUND: To assess the association of qualitative and quantitative infarct characteristics and 3 cognitive outcome tests, namely the Montreal Cognitive Assessment (MOCA) for mild cognitive impairment, the Boston Naming Test for visual confrontation naming, and the Sunnybrook Neglect Assessment Procedure for neglect, in large vessel occlusion stroke. METHODS: Secondary observational cohort study using data from the randomized-controlled ESCAPE-NA1 trial (Safety and Efficacy of Nerinetide in Subjects Undergoing Endovascular Thrombectomy for Stroke), in which patients with large vessel occlusion undergoing endovascular treatment were randomized to receive either intravenous Nerinetide or placebo...
March 21, 2024: Stroke; a Journal of Cerebral Circulation
https://read.qxmd.com/read/38499270/cmr-reference-values-of-right-ventricular-volumetric-variables-in-patients-with-hypoplastic-left-heart-syndrome
#7
JOURNAL ARTICLE
Andrik Ballenberger, Amke Caliebe, Sylvia Krupickova, Anselm Uebing, Dominik Daniel Gabbert, Inga Voges
BACKGROUND: Cardiovascular magnetic resonance (CMR) has established itself as the gold standard for serial assessment of systemic right ventricular (RV) performance but due to the lack of standardized RV reference values for HLHS patients, the interpretation of RV volumetric data in HLHS remains difficult. Therefore, this study aimed to close this gap by providing CMR reference values for the systemic RV in HLHS patients. METHODS: CMR scans of 160 children, adolescents and young adults (age range 2...
March 16, 2024: Journal of Cardiovascular Magnetic Resonance
https://read.qxmd.com/read/38497355/acute-cardiac-autonomic-and-hemodynamic-responses-to-resistive-breathing-effect-of-loading-type-and-intensity
#8
JOURNAL ARTICLE
Karan Pongpanit, Manta Korakot, Peerakan Nitilap, Nopparat Puplab, Noppawan Charususin, Kornanong Yuenyongchaiwat
OBJECTIVES: This study aimed to assess the acute impact of distinct loading breathing types and intensities on cardiac autonomic function and hemodynamic responses in healthy young adults. METHODS: A randomized, crossover trial involved 28 participants who underwent inspiratory resistive breathing, expiratory resistive breathing (ERB) and combined resistive breathing, each at 30% and 60% of maximal respiratory pressures. Data on heart rate variability (HRV) and hemodynamic parameters were collected during each trial...
March 18, 2024: Clinical Physiology and Functional Imaging
https://read.qxmd.com/read/38477113/visit-to-visit-blood-pressure-variability-and-progression-of-white-matter-hyperintensities-over-14-years
#9
JOURNAL ARTICLE
Esther Janssen, Jan Willem van Dalen, Mengfei Cai, Mina A Jacob, José Marques, Marco Duering, Edo Richard, Anil M Tuladhar, Frank-Erik de Leeuw, Nina Hilkens
Purpose: There is evidence that blood pressure variability (BPV) is associated with cerebral small vessel disease (SVD) and may therefore increase the risk of stroke and dementia. It remains unclear if BPV is associated with SVD progression over years. We examined whether visit-to-visit BPV is associated with white matter hyperintensity (WMH) progression over 14 years and MRI markers after 14 years. Materials and methods: We included participants with SVD from the Radboud University Nijmegen Diffusion tensor Magnetic resonance-imaging Cohort (RUNDMC) who underwent baseline assessment in 2006 and follow-up in 2011, 2015 and 2020...
December 2024: Blood Pressure
https://read.qxmd.com/read/38471987/monitoring-of-cerebral-blood-flow-autoregulation-physiologic-basis-measurement-and-clinical-implications
#10
REVIEW
Eric L Vu, Charles H Brown, Kenneth M Brady, Charles W Hogue
Cerebral blood flow (CBF) autoregulation is the physiologic process whereby blood supply to the brain is kept constant over a range of cerebral perfusion pressures ensuring a constant supply of metabolic substrate. Clinical methods for monitoring CBF autoregulation were first developed for neurocritically ill patients and have been extended to surgical patients. These methods are based on measuring the relationship between cerebral perfusion pressure and surrogates of CBF or cerebral blood volume (CBV) at low frequencies (<0...
March 11, 2024: British Journal of Anaesthesia
https://read.qxmd.com/read/38466432/the-athlete-s-heart-allometric-considerations-on-published-papers-and-relation-to-cardiovascular-variables
#11
REVIEW
Casper Sejersen, Stefanos Volianitis, Niels H Secher
To evaluate the morphology of the "athlete's heart", left ventricular (LV) wall thickness (WT) and end-diastolic internal diameter (LVIDd) at rest were addressed in publications on skiers, rowers, swimmers, cyclists, runners, weightlifters (n = 927), and untrained controls (n = 173) and related to the acute and maximal cardiovascular response to their respective disciplines. Dimensions of the heart at rest and functional variables established during the various sport disciplines were scaled to body weight for comparison among athletes independent of body mass...
March 11, 2024: European Journal of Applied Physiology
https://read.qxmd.com/read/38444912/white-matter-network-underlying-semantic-processing-evidence-from-stroke-patients
#12
JOURNAL ARTICLE
Xiangyue Xiao, Zhicai Dong, Mingyan Yu, Junhua Ding, Maolin Zhang, Sara Cruz, Zaizhu Han, Yan Chen
The hub-and-spoke theory of semantic representation fractionates the neural underpinning of semantic knowledge into two essential components: the sensorimotor modality-specific regions and a crucially important semantic hub region. Our previous study in patients with semantic dementia has found that the hub region is located in the left fusiform gyrus. However, because this region is located within the brain damage in patients with semantic dementia, it is not clear whether the semantic deficit is caused by structural damage to the hub region itself or by its disconnection from other brain regions...
2024: Brain communications
https://read.qxmd.com/read/38439027/effect-of-postoperative-prolonged-sedation-with-dexmedetomidine-after-successful-reperfusion-with-endovascular-thrombectomy-on-long-term-prognosis-in-patients-with-acute-ischemic-stroke-ppdet-study-protocol-for-a-randomized-controlled-trial
#13
JOURNAL ARTICLE
Li-Na Yang, Yi Sun, Yu-Zhu Wang, Jing Wang, Yi-Sha Qi, Shan-Shan Mu, Yun-Peng Liu, Zi-Qing Zhang, Zi-Mo Chen, Xiao-Jie Wang, Wu-Xiang Xie, Chang-Wei Wei, Yang Wang, An-Shi Wu
BACKGROUND: Endovascular thrombectomy (EVT) is a standard treatment for acute ischemic stroke (AIS) with large vessel occlusion. Hypertension and increased blood pressure variability within the first 24 h after successful reperfusion are related to a higher risk of symptomatic intracerebral hemorrhage and higher mortality. AIS patients might suffer from ischemia-reperfusion injury following reperfusion, especially within 24 h. Dexmedetomidine (DEX), a sedative commonly used in EVT, can stabilize hemodynamics by inhibiting the sympathetic nervous system and alleviate ischemia-reperfusion injury through anti-inflammatory and antioxidative properties...
March 4, 2024: Trials
https://read.qxmd.com/read/38434285/influence-of-oxyhydrogen-gas-retrofit-into-two-stroke-engine-on-emissions-and-exhaust-gas-temperature-variations
#14
JOURNAL ARTICLE
R Kamarudin, Y Z Ang, N S Topare, M N Ismail, K F Mustafa, P Gunnasegaran, M Z Abdullah, N M Mazlan, I A Badruddin, A S A Zedan, R U Baig, S M Sultan
The generation of power and fuel sustainability that contributes to a cleaner output of exhaust gases is one of the most important objectives the world seeks. In this paper, oxyhydrogen gas is used to retrofit into a two-stroke engine. The water was electrolysed and generated a mixture of oxygen (O2 ) and hydrogen (H2 ) or known as oxyhydrogen (HHO) gas via an electrolytic dry cell generator. The HHO was retrofitted experimentally to investigate the engine emissions and exhaust gas temperature from a 1.5 kW gasoline engine...
March 15, 2024: Heliyon
https://read.qxmd.com/read/38400761/haemodynamic-effects-of-remifentanil-during-induction-of-general-anaesthesia-with-propofol-a-randomised-trial
#15
JOURNAL ARTICLE
Gunnar Helge Sjøen, Ragnhild Sørum Falk, Tor Hugo Hauge, Tor Inge Tønnessen, Eldrid Langesaeter
BACKGROUND: Remifentanil may have a dose-dependent haemodynamic effect during the induction of general anaesthesia combined with propofol. Our objective was to investigate whether systolic arterial blood pressure (SAP) was reduced to a greater extent when the remifentanil dose was increased. METHODS: This randomised, double-blind, dose-controlled study was conducted at the Day Surgery Unit of Haugesund Hospital, Norway. Ninety-nine healthy women scheduled for gynaecological surgery were randomly allocated in a 1:1:1 ratio to receive remifentanil induction with a low, medium or high dose corresponding to maximum effect-site concentrations (Ce) of 2, 4 and 8 ng/mL...
February 24, 2024: Acta Anaesthesiologica Scandinavica
https://read.qxmd.com/read/38390444/a-nomogram-for-predicting-left-atrial-thrombus-or-spontaneous-echo-contrast-in-non-valvular-atrial-fibrillation-patients-using-hemodynamic-parameters-from-transthoracic-echocardiography
#16
JOURNAL ARTICLE
Decai Zeng, Xiaofeng Zhang, Shuai Chang, Yanfen Zhong, Yongzhi Cai, Tongtong Huang, Ji Wu
BACKGROUND: Atrial fibrillation (AF) is the most common cardiac arrhythmia and is associated with a high risk of stroke. This study was designed to investigate the relationship between hemodynamic parameters and left atrial thrombus/spontaneous echo contrast (LAT/SEC) in non-valvular atrial fibrillation (NVAF) patients and establish a predictive nomogram that integrates hemodynamic parameters with clinical predictors to predict the risk of LAT/SEC. METHODS: From January 2019 to September 2022, a total of 354 consecutive patients with NVAF were enrolled in this cross-sectional study at the First Affiliated Hospital of Guangxi Medical University...
2024: Frontiers in Cardiovascular Medicine
https://read.qxmd.com/read/38387815/association-of-race-and-ethnicity-with-initial-surgical-hemodialysis-access-type-in-a-safety-net-system
#17
JOURNAL ARTICLE
Maria G Valadez, Micaela Torres, Christian de Virgilio, Laura Perez, Anibal La Riva, Sara Rashidi, Ashkan Moazzez, Mark Archie
OBJECTIVES: Prior studies have found lower arteriovenous fistula (AVF) creation rates in Black and Hispanic patients. Whether this is due to health care disparities or other differences is unclear. Our objective was to evaluate the racial/ethnic differences in initial surgical access type within a high volume, safety net system with predominantly Black and Hispanic populations. METHODS: A retrospective review of initial hemodialysis access in consecutive cases between 2014 and 2019 was conducted from all five safety net hospitals in a healthcare system that primarily treats underserved patients...
February 20, 2024: Journal of Vascular Surgery
https://read.qxmd.com/read/38348238/comparison-of-cardiac-magnetic-resonance-imaging-functional-and-haemodynamic-variables-in-pulmonary-arterial-hypertension-insights-from-repair
#18
JOURNAL ARTICLE
David G Kiely, Richard Channick, Dayana Flores, Nazzareno Galiè, Gwen MacDonald, J Tim Marcus, Lada Mitchell, Andrew Peacock, Stephan Rosenkranz, Ahmed Tawakol, Adam Torbicki, Anton Vonk Noordegraaf, Andrew J Swift
BACKGROUND: Measures that can detect large treatment effects are important for monitoring therapeutic effectiveness. The 2022 European Society of Cardiology/European Respiratory Society guidelines highlight the importance of imaging in monitoring disease status and treatment response in pulmonary arterial hypertension (PAH). Are the standardised treatment effect sizes (STES) of cardiac magnetic resonance imaging (cMRI) comparable with functional and haemodynamic variables? METHODS: REPAIR (ClinicalTrials...
January 2024: ERJ Open Research
https://read.qxmd.com/read/38330768/fluid-structure-interaction-analysis-of-the-thromboembolic-risk-in-the-left-atrial-appendage-under-atrial-fibrillation-effect-of-hemodynamics-and-morphological-features
#19
JOURNAL ARTICLE
Giulio Musotto, Alessandra Monteleone, Danila Vella, Bernardo Zuccarello, Ruggero Cannova, Andrew Cook, Giorgia Maria Bosi, Gaetano Burriesci
BACKGROUND: Complications of atrial fibrillation (AF) include ischemic events originating within the left atrial appendage (LAA), a protrusion of the left atrium with variable morphological characteristics. The role of the patient specific morphology and pathological haemodynamics on the risk of ischemia remains unclear. METHODS: This work performs a comparative assessment of the hemodynamic parameters among patient-specific LAA morphologies through fluid-structure interaction computational analyses...
February 2, 2024: Computer Methods and Programs in Biomedicine
https://read.qxmd.com/read/38309959/-standard-technical-specifications-for-methacholine-chloride-methacholine-bronchial-challenge-test-2023
#20
JOURNAL ARTICLE
(no author information available yet)
The methacholine challenge test (MCT) is a standard evaluation method of assessing airway hyperresponsiveness (AHR) and its severity, and has significant clinical value in the diagnosis and treatment of bronchial asthma. A consensus working group consisting of experts from the Pulmonary Function and Clinical Respiratory Physiology Committee of the Chinese Association of Chest Physicians, the Task Force for Pulmonary Function of the Chinese Thoracic Society, and the Pulmonary Function Group of Respiratory Branch of the Chinese Geriatric Society jointly developed this consensus...
February 12, 2024: Chinese Journal of Tuberculosis and Respiratory Diseases
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