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https://www.readbyqxmd.com/read/29767416/utility-of-electrical-velocimetry-based-noninvasive-stroke-volume-variation-in-predicting-fluid-responsiveness-under-different-ventilation-modes-in-anaesthetized-dogs
#1
Kazumasu Sasaki, Tatsushi Mutoh, Shuzo Yamamoto, Yasuyuki Taki, Ryuta Kawashima
We evaluated the utility of noninvasive stroke volume variation (SVV) as a functional haemodynamic predictor for fluid responsiveness under different ventilation modes [assist control (A/C), synchronized intermittent mandatory ventilation (SIMV), and continuous positive airway pressure (CPAP)] in 45 anaesthetized dogs, using an electrical velocimetry device. Receiver operating curve analysis confirmed the best predictive value during SVVA /C (12.5% of cut-off value; 75% sensitivity and 86% specificity) followed by SVVSIMV (13...
May 16, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29745623/the-role-of-intraoperative-stroke-volume-variation-on-bleeding-during-functional-endoscopic-sinus-surgery
#2
Roberta Di Mauro, Fabiana Lucci, Federica Martino, Maria B Silvi, Eleonora Gidaro, Santo Di Lorenzo, Nicola Toschi, Stefano Di Girolamo, Mario Dauri
BACKGROUNDː Functional Endoscopic Sinus Surgery (FESS) is a minimally-invasive surgical technique for patients with paranasal sinus pathology. Surgical bleeding reduces operative field visibility and increases the incidence of serious complications. Epinephrine injection into the nasal mucosa and controlled hypotension are used to minimise bleeding. Hypotension carries risks and sometimes does not reduce surgical bleeding. The goal of this study is to discover which haemodynamic parameter better correlates with surgical bleeding...
May 9, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29744245/reliability-of-passive-leg-raising-stroke-volume-variation-and-pulse-pressure-variation-to-predict-fluid-responsiveness-during-weaning-from-mechanical-ventilation-after-cardiac-surgery-a-prospective-observational-study
#3
Christoph Karl Hofer, Martin Geisen, Sonja Hartnack, Omer Dzemali, Michael Thomas Ganter, Andreas Zollinger
Objective: During assisted ventilation and spontaneous breathing, functional haemodynamic parameters, including stroke volume variation (SVV) and pulse pressure variation (PPV), are of limited value to predict fluid responsiveness, and the passive leg raising (PLR) manoeuvre has been advocated as a surrogate method. We aimed to study the predictive value of SVV, PPV and PLR for fluid responsiveness during weaning from mechanical ventilation after cardiac surgery. Methods: Haemodynamic variables and fluid responsiveness were assessed in 34 patients...
April 2018: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/29721645/midazolam-increases-preload-dependency-during-endotoxic-shock-in-rabbits-by-affecting-venous-vascular-tone
#4
Jianxiao Chen, Tao Yu, Federico Longhini, Xiwen Zhang, Songqiao Liu, Ling Liu, Yi Yang, Haibo Qiu
BACKGROUND: Septic patients often require sedation in intensive care unit, and midazolam is one of the most frequently used sedatives among them. But the interaction between midazolam and septic shock is not known. The aim of this study is to investigate the effects of midazolam on preload dependency in an endotoxic shock model by evaluating systemic vascular tone and cardiac function. METHODS: Eighteen rabbits were randomly divided into three groups: Control group, MID1 group and MID2 group...
May 2, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29684983/hemodynamic-effects-of-different-types-of-pneumatic-compression-of-the-lower-extremities-during-anesthesia-induction-a-prospective-randomized-controlled-trial
#5
Hyungsun Lim, Jin-Wan Kim, Kijae Lee, Donghak Seo, Seonghoon Ko
Background: The current study evaluated the hemodynamic effects of different types of pneumatic compressions of the lower extremities during anesthesia induction. In addition, the hemodynamic effects were compared between patients older than 65 age years and those aged 65 years or younger. Methods: One hundred and eighty patients (90: > 65 years and 90: ≤ 65 years) were enrolled. Each age group of patients was randomly assigned to one of three groups; Group 1 (no compression), Group 2 (sequential pneumatic compression), and Group 3 (sustained pneumatic compression without decompression)...
April 24, 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29681880/exploring-the-role-of-temporoparietal-cortex-in-upright-perception-and-the-link-with-torsional-eye-position
#6
Jorge Otero-Millan, Ariel Winnick, Amir Kheradmand
Upright perception is a key aspect of orientation constancy, as we maintain a stable perception of the world despite continuous movements of our eyes, head, and body. Torsional position of the eyes can impact perception of upright by changing orientation of the images on the retina relative to gravity. Here, we investigated the role of temporoparietal cortex in upright perception with respect to ocular torsion, by means of the inhibitory effect of continuous theta burst transcranial magnetic stimulation (TMS)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29679768/comparison-of-proaqt-pulsioflex%C3%A2-and-oesophageal-doppler-for-intraoperative-haemodynamic-monitoring-during-intermediate-risk-abdominal-surgery
#7
Grégoire Weil, Cyrus Motamed, Alexandre Eghiaian, Xavier Monnet, Stéphanie Suria
OBJECTIVE: To compare cardiac index (CI) between Proaqt/PulsioFlex® and esophageal Doppler (OD) and the ability of the PulsioFlex® to track CI changes induced by fluid challenge and secondly to assess the impact of the time interval between two auto-calibrations of PulsioFlex® on the accuracy of the measured CI. METHODS: In a single hospital, 49 intermediate-risk oncologic abdominal surgery patients were included in an observational study. We measured the cardiac Index (CI) provided by OD and by the Proaqt/PulsioFlex® before and after internal calibration, which were performed randomly at specific intervals after the initial one (30, 60, 90 and 120min)...
April 18, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29597335/simian-varicella-virus-infects-enteric-neurons-and-%C3%AE-4%C3%AE-7-integrin-expressing-gut-tropic-t-cells-in-nonhuman-primates
#8
Werner J D Ouwendijk, Suzanne van Veen, Tamana Mehraban, Ravi Mahalingam, Georges M G M Verjans
The pathogenesis of enteric zoster, a rare debilitating complication of reactivation of latent varicella-zoster virus (VZV) in the enteric nervous system (ENS), is largely unknown. Infection of monkeys with the closely related Varicellovirus simian varicella virus (SVV) mimics VZV disease in humans. In this study, we determined the applicability of the SVV nonhuman primate model to study Varicellovirus infection of the ENS. We confirmed VZV infection of the gut in latently infected adults and demonstrated that SVV DNA was similarly present in gut of monkeys latently infected with SVV using quantitative real-time PCR...
March 28, 2018: Viruses
https://www.readbyqxmd.com/read/29593416/influence-of-stroke-volume-variation-on-fluid-treatment-and-postoperative-complications-in-thoracic-surgery
#9
Cengiz Sahutoglu, Erbil Turksal, Seden Kocabas, Fatma Zekiye Askar
Background: Fluid management in critically ill patients usually relies on increasing preload to augment cardiac output. In the present study, we aimed to evaluate whether stroke volume variation (SVV) can guide fluid therapy and reduce complications. Patients and methods: In this retrospective study, a total of 88 patients who underwent lobectomy were divided into two groups: group 1 (SVV, n=43) and group 2 (conventional or central venous pressure [CVP], n=45). Heart rate, blood pressure, oxygen saturation, SVV (only group 1), CVP (all patients), urea, creatinine, and hemoglobin levels before and after surgery, use of fluid, blood and inotropic agents, and postoperative complications were recorded retrospectively...
2018: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29569112/phenylephrine-increases-cardiac-output-by-raising-cardiac-preload-in-patients-with-anesthesia-induced-hypotension
#10
A F Kalmar, S Allaert, P Pletinckx, J-W Maes, J Heerman, J J Vos, M M R F Struys, T W L Scheeren
Induction of general anesthesia frequently induces arterial hypotension, which is often treated with a vasopressor, such as phenylephrine. As a pure α-agonist, phenylephrine is conventionally considered to solely induce arterial vasoconstriction and thus increase cardiac afterload but not cardiac preload. In specific circumstances, however, phenylephrine may also contribute to an increase in venous return and thus cardiac output (CO). The aim of this study is to describe the initial time course of the effects of phenylephrine on various hemodynamic variables and to evaluate the ability of advanced hemodynamic monitoring to quantify these changes through different hemodynamic variables...
March 22, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29550655/precision-of-perceived-direction-of-gravity-in-partial-bilateral-vestibulopathy-correlates-with-residual-utricular-function
#11
A Bürgin, C J Bockisch, A A Tarnutzer
OBJECTIVE: Gait imbalance in patients with bilateral-vestibular-deficiency (BVD) was linked to increased variability in perceived direction of gravity while upright. We hypothesized this to be true also when roll-tilted. Moreover, as utricular input is essential for spatial orientation, we predicted the variability of perceived vertical to correlate inversely with utricular function. METHODS: Subjective visual vertical (SVV) and haptic vertical (SHV) were measured in various roll-orientations (0°/±45°/±90°) and postural adjustments along earth-vertical/earth-horizontal were collected in patients with partial BVD (n = 10) and healthy controls (n = 11)...
March 5, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29543136/effect-of-sleep-deprivation-on-diurnal-variation-of-vertical-perception-and-postural-control
#12
Tristan Martin, Antoine Gauthier, Zhang Ying, Nicolas Benguigui, Sebastien Moussay, Jan Bulla, Damien Davenne, Nicolas Bessot
The aim of the study was to test the effect of total sleep deprivation on performance and time-of-day pattern of Subjective Visual Vertical (SVV) and postural control. Nineteen healthy young participants (4 females and 15 males 21.9 {plus minus} 1.2 years) were engaged in two counterbalanced experimental sessions with or without total sleep deprivation. Oral temperature, Karolinska sleepiness scale and visual analogic scale for fatigue, postural control and SVV were randomly measured every 4h, from 6:00 h to 22:00 h...
March 15, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29519280/-variability-of-peripheral-arterial-peak-velocity-predicts-fluid-responsiveness-in-patients-with-septic-shock
#13
Nianfang Lu, Li Jiang, Bo Zhu, Wenyong Han, Yingqi Zhao, Yuntao Shi, Fashuang Guo, Xiuming Xi
OBJECTIVE: To explore the accuracy of fluid responsiveness assessment by variability of peripheral arterial peak velocity and variability of inferior vena cava diameter (ΔIVC) in patients with septic shock. METHODS: A prospective study was conducted. The patients with septic shock undergoing mechanical ventilation (MV) admitted to intensive care unit (ICU) of Beijing Electric Power Hospital from January 2016 to December 2017 were enrolled. According to sepsis bundles of septic shock, volume expansion (VE) was conducted...
March 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29510903/subjective-visual-vertical-assessment-with-mobile-virtual-reality-system
#14
Ingrida Ulozienė, Milda Totilienė, Andrius Paulauskas, Tomas Blažauskas, Vaidotas Marozas, Diego Kaski, Virgilijus Ulozas
BACKGROUND AND OBJECTIVE: The subjective visual vertical (SVV) is a measure of a subject's perceived verticality, and a sensitive test of vestibular dysfunction. Despite this, and consequent upon technical and logistical limitations, SVV has not entered mainstream clinical practice. The aim of the study was to develop a mobile virtual reality based system for SVV test, evaluate the suitability of different controllers and assess the system's usability in practical settings. MATERIALS AND METHODS: In this study, we describe a novel virtual reality based system that has been developed to test SVV using integrated software and hardware, and report normative values across healthy population...
2017: Medicina
https://www.readbyqxmd.com/read/29488025/positive-end-expiratory-pressure-induced-increase-in-external-jugular-venous-pressure-does-not-predict-fluid-responsiveness-in-laparoscopic-prostatectomy
#15
Min Hur, Seokha Yoo, Jung-Yoon Choi, Sun-Kyung Park, Dhong Eun Jung, Won Ho Kim, Jin-Tae Kim, Jae-Hyon Bahk
BACKGROUND: Dynamic change in central venous pressure (CVP) was associated with fluid responsiveness. External jugular venous pressure (EJVP) may reliably estimate CVP and have the advantages of being less invasive. We investigated whether increase in EJVP induced by positive end-expiratory pressure (PEEP) could be a reliable predictor of fluid responsiveness in patients undergoing robot-assisted laparoscopic prostatectomy (RALP). METHODS: Fifty patients who underwent RALP with steep Trendelenburg position were enrolled...
February 27, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29483891/effects-of-head-position-on-perception-of-gravity-in-vestibular-neuritis-and-lateral-medullary-infarction
#16
Sung-Hee Kim, Ji-Soo Kim
Objective: Internal representation of gravity can be quantified by measuring the subjective visual vertical (SVV). Modulation of verticality perception during head tilts may be perturbed in vestibular disorders causing SVV tilts in the upright head position. This study aimed to determine the influence of head tilts on the estimation of SVV in acute vestibular disorders. Methods: We measured the SVV in 37 patients with acute vestibular symptoms due to unilateral vestibular neuritis (VN) ( n  = 28) and lateral medullary infarction (LMI) ( n  = 9)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29466416/elevated-visual-dependency-in-young-adults-after-chemotherapy-in-childhood
#17
Einar-Jón Einarsson, Mitesh Patel, Hannes Petersen, Thomas Wiebe, Per-Anders Fransson, Måns Magnusson, Christian Moëll
Chemotherapy in childhood can result in long-term neurophysiological side-effects, which could extend to visual processing, specifically the degree to which a person relies on vision to determine vertical and horizontal (visual dependency). We investigated whether adults treated with chemotherapy in childhood experience elevated visual dependency compared to controls and whether any difference is associated with the age at which subjects were treated. Visual dependency was measured in 23 subjects (mean age 25...
2018: PloS One
https://www.readbyqxmd.com/read/29461010/genetic-and-phylogenetic-analysis-of-reemerged-novel-seneca-valley-virus-strains-in-guangdong-province-2017
#18
J Liu, X Ren, Z Li, G Xu, R Lu, K Zhang, Z Ning
From June to July 2017, six Seneca Valley virus (SVV) strains were isolated from swine herds exhibiting SVV-associated porcine idiopathic vesicular disease (PIVD) in Guangdong province, China. Complete genomic sequences of these six newly identified strains were genetically and phylogenetically analysed. The results revealed that these six SVV strains were genetically closely related to USA/GBI29/2015 and notably distinct from all previous Chinese strains, indicating the reemergence of new SVV strains in Guangdong province...
June 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29456349/effects-of-crystalloid-preloading-20-ml-kg-on-hemodynamics-in-relation-to-postural-changes-in-patients-undergoing-neurosurgical-procedures-in-sitting-position
#19
M Ranjith, Prasanna Udupi Bidkar, K Narmadalakshmi, Praveen R Talawar
Background: Hemodynamic disturbances are common during positioning the patients from supine to sitting for neurosurgical procedures. The reported incidence of hypotension varies from 5% to 32%. The aim of the study was to study the effect of crystalloid preloading on hemodynamic parameters during positioning the patient from supine to sitting position. Materials and Methods: In this prospective observational trial, 20 patients were enrolled. Two patients had a patent foramen ovale on transesophageal echocardiography and were excluded from the study...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29441350/perioperative-goal-directed-therapy-using-invasive-uncalibrated-pulse-contour-analysis
#20
Bernd Saugel, Daniel A Reuter
"Perioperative goal-directed therapy" (PGDT) aims at an optimization of basic and advanced global hemodynamic variables to maintain adequate oxygen delivery to the end-organs. PGDT protocols help to titrate fluids, vasopressors, or inotropes to hemodynamic target values. There is considerable evidence that PGDT can improve patient outcome in high-risk patients if both fluids and inotropes are administered to target hemodynamic variables reflecting blood flow. Despite this evidence, PGDT strategies aiming at an optimization of blood flow seem to be not well implemented in routine clinical care...
2018: Frontiers in Medicine
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