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https://www.readbyqxmd.com/read/28803717/noninvasive-stroke-volume-variation-using-electrical-velocimetry-for-predicting-fluid-responsiveness-in-dogs-undergoing-cardiac-surgery
#1
Kazumasu Sasaki, Tatsushi Mutoh, Tomoko Mutoh, Yasuyuki Taki, Ryuta Kawashima
OBJECTIVE: To evaluate the ability of a noninvasive cardiac output monitoring system with electrical velocimetry (EV) for predicting fluid responsiveness in dogs undergoing cardiac surgery. STUDY DESIGN: Prospective experimental trial. ANIMALS: A total of 30 adult Beagle dogs. METHODS: Stroke volume (SV), stroke volume variation (SVV) and cardiac index were measured using the EV device in sevoflurane-anaesthetized, mechanically ventilated dogs undergoing thoracotomies for experimental creation of right ventricular failure...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28800001/basic-hemodynamic-monitoring-using-ultrasound-or-electrical-cardiometry-during-transportation-of-neonates-and-infants
#2
Angele Boet, Gilles Jourdain, Serge Demontoux, Sebastien Hascoet, Pierre Tissieres, Catherine Rucker-Martin, Daniele De Luca
OBJECTIVES: Electrical cardiometry and heart ultrasound might allow hemodynamic evaluation during transportation of critically ill patients. Our aims were 1) to test feasibility of stroke volume monitoring using electrical cardiometry or ultrasound during transportation and 2) to investigate if transportation impacts on electrical cardiometry and ultrasound reliability. DESIGN: Prospective, pragmatic, feasibility cohort study. SETTING: Mobile ICUs specialized for neonatal and pediatric transportation...
August 9, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28769863/application-of-texture-analysis-to-study-small-vessel-disease-and-blood-brain-barrier-integrity
#3
Maria Del C Valdés Hernández, Victor González-Castro, Francesca M Chappell, Eleni Sakka, Stephen Makin, Paul A Armitage, William H Nailon, Joanna M Wardlaw
OBJECTIVES: We evaluate the alternative use of texture analysis for evaluating the role of blood-brain barrier (BBB) in small vessel disease (SVD). METHODS: We used brain magnetic resonance imaging from 204 stroke patients, acquired before and 20 min after intravenous gadolinium administration. We segmented tissues, white matter hyperintensities (WMH) and applied validated visual scores. We measured textural features in all tissues pre- and post-contrast and used ANCOVA to evaluate the effect of SVD indicators on the pre-/post-contrast change, Kruskal-Wallis for significance between patient groups and linear mixed models for pre-/post-contrast variations in cerebrospinal fluid (CSF) with Fazekas scores...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28742783/end-expiratory-occlusion-test-predicts-fluid-responsiveness-in-patients-with-protective-ventilation-in-the-operating-room
#4
Matthieu Biais, Mathilde Larghi, Jeremy Henriot, Hugues de Courson, Musa Sesay, Karine Nouette-Gaulain
BACKGROUND: End-expiratory occlusion test (EEOT) has been proposed to predict fluid responsiveness in mechanically ventilated intensive care unit patients. The utility of this test during low-tidal-volume ventilation remains uncertain. This study aimed to determine whether hemodynamic variations induced by EEOT could predict the effect of volume expansion in patients with protective ventilation in the operating room. METHODS: Forty-one patients undergoing neurosurgery were included...
July 21, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28742775/estimation-of-stroke-volume-and-stroke-volume-changes-by-electrical-impedance-tomography
#5
Fernando José da Silva Ramos, André Hovnanian, Rogério Souza, Luciano C P Azevedo, Marcelo B P Amato, Eduardo L V Costa
BACKGROUND: Electrical impedance tomography (EIT) is a noninvasive imaging method that identifies changes in air and blood volume based on thoracic impedance changes. Recently, there has been growing interest in EIT to measure stroke volume (SV). The objectives of this study are as follows: (1) to evaluate the ability of systolic impedance variations (ΔZsys) to track changes in SV in relation to a baseline condition; (2) to assess the relationship of ΔZsys and SV in experimental subjects; and (3) to identify the influence of body dimensions on the relationship between ΔZsys and SV...
July 24, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28738837/assessment-of-cerebral-circulation-in-a-porcine-model-of-intravenously-given-e-coli-induced-fulminant-sepsis
#6
Levente Molnár, Norbert Németh, Mariann Berhés, Endre Hajdú, Lóránd Papp, Ábel Molnár, Judit Szabó, Ádám Deák, Béla Fülesdi
BACKGROUND: The aim of the present work was to assess cerebral hemodynamic changes in a porcine model of E.coli induced fulminant sepsis. METHODS: Nineteen healthy female Hungahib pigs, 10-12 weeks old, randomly assigned into two groups: Control (n = 9) or Septic Group (n = 10). In the Sepsis group Escherichia coli culture suspended in physiological saline was intravenously administrated in a continuously increasing manner according to the following protocol: 2 ml of bacterial culture suspended in physiological saline was injected in the first 30 min, then 4 ml of bacterial culture was administered within 30 min, followed by infusion of 32 ml bacterial culture for 2 h...
July 24, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28719516/echocardiography-and-passive-leg-raising-in-the-postoperative-period-a-prospective-observational-study
#7
Yasser El Hadouti, Lucía Valencia, Angel Becerra, Aurelio Rodríguez-Pérez, Jean L Vincent
BACKGROUND: Signs of hypovolaemia are frequent in the postoperative period, but not all patients need or respond to fluid administration. An increase in cardiac output (CO) after passive leg raising (PLR) has been demonstrated to be useful as a volume response predictor in non-surgical, spontaneously breathing patients. OBJECTIVE: The objective of this study was to evaluate the accuracy of transthoracic echocardiography after PLR to predict fluid responsiveness in post-surgical patients...
July 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28719470/diurnal-variation-and-repeatability-of-arterial-stiffness-and-cardiac-output-measurements-in-the-third-trimester-of-uncomplicated-pregnancy
#8
Mohamed W Osman, Francesca Leone, Mintu Nath, Asma Khalil, David R Webb, Thompson G Robinson, Hatem A Mousa
AIM: To investigate same day repeated measures and diurnal variation of arterial stiffness, cardiac output (CO), stroke volume (SV) and total peripheral resistance (TPR) during the third trimester of normal pregnancy. METHODOLOGY: Pulse wave velocity (PWV) and augmentation index (AIx) were recorded using the Arteriograph, while CO, SV and TPR were recorded using noninvasive cardiac output monitoring. The measurements were obtained in the third trimester of pregnancy from 21 healthy pregnant women at four time points (morning, afternoon, evening and midnight) over a 24-h period...
July 14, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28712813/factors-affecting-operative-time-and-outcome-of-carotid-endarterectomy-in-the-vascular-quality-initiative
#9
Jennifer L Perri, Brian W Nolan, Philip P Goodney, Randall R DeMartino, Benjamin S Brooke, Shipra Arya, Mark F Conrad, Jack L Cronenwett
OBJECTIVE: Prior studies have suggested a relationship between operative (Op) time and outcome after major vascular procedures. This study analyzed factors associated with Op time and outcome after carotid endarterectomy (CEA) in the Vascular Quality Initiative (VQI) registry. METHODS: Elective, primary CEAs without high anatomic risk or concomitant procedures from 2012 to 2015 in the VQI were analyzed (N = 26,327, performed by 1188 surgeons from 249 centers). Multivariable analysis was used to identify patient, procedure, and surgeon factors associated with Op time and major adverse events (MAEs), categorized as either technical (ipsilateral stroke, cranial nerve injury, reoperation) or cardiac (myocardial infarction, congestive heart failure, dysrhythmia requiring treatment, surgical site infection, and death)...
July 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28694225/dynamic-arterial-elastance-obtained-using-arterial-signal-does-not-predict-an-increase-in-arterial-pressure-after-a-volume-expansion-in-the-operating-room
#10
Romain Lanchon, Karine Nouette-Gaulain, Laurent Stecken, Musa Sesay, Jean-Yves Lefrant, Matthieu Biais
INTRODUCTION: Dynamic arterial elastance (Eadyn) is defined as the ratio between pulse pressure variations (PPV) and stroke volume variations (SVV). Eadyn has been proposed to predict an increase in mean arterial pressure (MAP) after volume expansion with conflicting results. The aim of the present study was to test the reliability of Eadyn in hypotensive patients (MAP<65mmHg) in the operating room (OR). PATIENTS AND METHODS: The study pooled data from 51 patients...
July 7, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28690287/stroke-volume-variation-svv-and-pulse-pressure-variation-ppv-as-indicators-of-fluid-responsiveness-in-sevoflurane-anesthetized-mechanically-ventilated-euvolemic-dogs
#11
Yusuke Endo, Jun Tamura, Tomohito Ishizuka, Takaharu Itami, Kiwamu Hanazono, Kenjiro Miyoshi, Tadashi Sano, Kazuto Yamashita, William W Muir
Changes in stroke volume variation (SVV) and pulse pressure variation (PPV) in response to fluid infusion were experimentally evaluated during vecuronium infusion and sevoflurane anesthesia in 5 adult, mechanically ventilated, euvolemic, beagle dogs. Sequential increases in central venous pressure (CVP; 3-7[baseline], 8-12, 13-17, 18-22 and 23-27 mmHg) were produced by infusing lactated Ringer's solution and 6% hydroxyethyl starch solution. Heart rate (beats/min), right atrial pressure (RAP, mmHg), pulmonary arterial pressure (PAP, mmHg), pulmonary capillary wedge pressure (PCWP, mmHg), transpulmonary thermodilution cardiac output (TPTDCO, L/min), stroke volume (SV, ml/beat), arterial blood pressure (ABP, mmHg), extravascular lung water (EVLW, ml), pulmonary vascular permeability index (PVPI, calculated), SVV (%), PPV (%) and systemic vascular resistance (SVR, dynes/sec/cm(5)) were determined at each predetermined CVP range...
July 10, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28685617/aerobic-exercise-prevents-rarefaction-of-pial-collaterals-and-increased-stroke-severity-that-occur-with-aging
#12
Wojciech Rzechorzek, Hua Zhang, Brian K Buckley, Kunjie Hua, Daniel Pomp, James E Faber
Variation in extent of the brain's collateral circulation is an important determinant of variation in the severity of stroke and efficacy of revascularization therapies. However, the number and diameter of pial collateral "arterioles" decrease with aging in associated with reduced eNOS and increased oxidative stress. We tested whether exercise reduces this aging-induced rarefaction. Twelve-month-old mice were randomized to sedentary or voluntary wheel-running. At 26 months' age, permanent MCA occlusion was followed 72 h later by determination of infarct volume and vascular casting after maximal dilation...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28669704/low-pressure-robot-assisted-radical-prostatectomy-with-the-airseal-system-at-olv-hospital-results-from-a-prospective-study
#13
Sabrina La Falce, Giacomo Novara, Giorgio Gandaglia, Paolo Umari, Geert De Naeyer, Frederiek D'Hondt, Jean Beresian, Rik Carette, Martin Penicka, Yujiing Mo, Geert Vandenbroucke, Alexandre Mottrie
BACKGROUND: Limited studies examined effects of pneumoperiotneum during robot-assisted radical prostatectomy (RARP) and with AirSeal. The aim of this study was to assess the effect on hemodynamics of a lower pressure pneumoperitoneum (8 mmHg) with AirSeal, during RARP in steep Trendelenburg 45° (ST). MATERIALS AND METHODS: This is an institutional review board-approved, prospective, interventional, single-center study including patients treated with RARP at OLV Hospital by one extremely experienced surgeon (July 2015-February 2016)...
June 2, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28659419/aggressiveness-of-care-following-intracerebral-hemorrhage-in-women-and-men
#14
MULTICENTER STUDY
Rahul Guha, Amelia Boehme, Stacie L Demel, Janet J Li, Xuemei Cai, Michael L James, Sebastian Koch, Carl D Langefeld, Charles J Moomaw, Jennifer Osborne, Padmini Sekar, Kevin N Sheth, E Woodrich, Bradford B Worrall, Daniel Woo, Seemant Chaturvedi
OBJECTIVE: To compare comorbidities and use of surgery and palliative care between men and women with intracerebral hemorrhage (ICH). METHODS: The Ethnic/Racial Variations of Intracerebral Hemorrhage (ERICH) study is a prospective, multicenter, case-control study of ICH risk factors and outcomes. We compared comorbidities, treatments, and use of do-not-resuscitate (DNR) orders in men vs women. Multivariate analysis was used to assess the likelihood of ICH surgery and palliative care after adjustment for variables that were p < 0...
July 25, 2017: Neurology
https://www.readbyqxmd.com/read/28647806/pre-anesthetic-stroke-volume-variation-can-predict-cardiac-output-decrease-and-hypotension-during-induction-of-general-anesthesia
#15
Takashi Juri, Koichi Suehiro, Sayaka Tsujimoto, Shigemune Kuwata, Akira Mukai, Katsuaki Tanaka, Tokuhiro Yamada, Takashi Mori, Kiyonobu Nishikawa
This study aimed to assess the reliability of stroke volume variation (SVV) in predicting cardiac output (CO) decrease and hypotension during induction of general anesthesia. Forty-five patients undergoing abdominal surgery under general anesthesia were enrolled. Before induction of anesthesia, patients were required to maintain deep breathing (6-8 times/min), and pre-anesthetic SVV was measured for 1 min by electrical cardiometry. General anesthesia was induced with propofol, remifentanil, rocuronium, and sevoflurane...
June 24, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28640019/mini-fluid-challenge-of-100-ml-of-crystalloid-predicts-fluid-responsiveness-in-the-operating-room
#16
Matthieu Biais, Hugues de Courson, Romain Lanchon, Bruno Pereira, Guillaume Bardonneau, Marion Griton, Musa Sesay, Karine Nouette-Gaulain
BACKGROUND: Mini-fluid challenge of 100 ml colloids is thought to predict the effects of larger amounts of fluid (500 ml) in intensive care units. This study sought to determine whether a low quantity of crystalloid (50 and 100 ml) could predict the effects of 250 ml crystalloid in mechanically ventilated patients in the operating room. METHODS: A total of 44 mechanically ventilated patients undergoing neurosurgery were included. Volume expansion (250 ml saline 0...
June 21, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28632543/stroke-volume-variation-guided-versus-central-venous-pressure-guided-low-central-venous-pressure-with-milrinone-during-living-donor-hepatectomy-a-randomized-double-blinded-clinical-trial
#17
RANDOMIZED CONTROLLED TRIAL
Jiwon Lee, Won Ho Kim, Ho-Geol Ryu, Hyung-Chul Lee, Eun-Jin Chung, Seong-Mi Yang, Chul-Woo Jung
BACKGROUND: We previously demonstrated the usefulness of milrinone for living donor hepatectomy. However, a less-invasive alternative to central venous catheterization and perioperative contributors to good surgical outcomes remain undetermined. The current study evaluated whether the stroke volume variation (SVV)-guided method can substitute central venous catheterization during milrinone-induced profound vasodilation. METHODS: We randomly assigned 42 living liver donors to receive either SVV guidance or central venous pressure (CVP) guidance to obtain milrinone-induced low CVP...
August 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28617162/the-use-of-stroke-volume-variation-to-guide-donor-management-is-associated-with-increased-organs-transplanted-per-donor
#18
Benjamin Bergstrom, J Salvador de la Cruz, Mitch Sally, Scott Louis, Melissa Friedman, Floyd Petersen, Darren Malinoski
BACKGROUND: There is a national shortage of organs available for transplantation, and utilization rates for thoracic organs are less than 40%. In addition, the optimal method of assessing cardiovascular status during donor management is uncertain. FloTrac is a noninvasive hemodynamic technique that measures cardiac output and fluid responsiveness. Our objective was to measure the impact of using this technique to guide management on fluid balance, vasopressor usage, thyroid hormone usage, and pulmonary function...
June 2017: Progress in Transplantation
https://www.readbyqxmd.com/read/28616545/assessment-of-various-parameters-using-simple-non-invasive-tests-in-patients-with-cardiovascular-diseases-with-or-without-cardiac-rehabilitation
#19
Takashi Ueda, Shin-Ichiro Miura, Kanta Fujimi, Toshihisa Ishida, Takuro Matsuda, Masaomi Fujita, Yoshiyuki Ura, Kouji Kaino, Maya Sakamoto, Tomoe Horita, Tadaaki Arimura, Yuhei Shiga, Takashi Kuwano, Ken Kitajima, Keijiro Saku
Cardiac rehabilitation (CR) improves cardiac function and exercise capacity in patients with cardiovascular disease (CVD). Simpler techniques are needed for use by physicians in the examination room to assess the usefulness of CR. We enrolled 46 consecutive CVD patients in a CR program (CR group) and prospectively followed them for 3 months. We compared them to 18 age-, gender- and body mass index-matched CVD patients without CR (non-CR group). Various parameters were measured at baseline and after 3 months using 3 simple non-invasive tests: severity of atherosclerosis [arterial velocity pulse index and arterial pressure volume index (API)] were determined using PASESA®, an autonomic nerve total activity amount index and a coefficient of variation of the R-R interval (CVRR) were determined using eHEART®, and peripheral resistance index, pressure rate product, stroke volume and cardiac index were determined using nico®]...
September 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28616241/passive-leg-raising-test-with-minimally-invasive-monitoring-the-way-forward-for-guiding-septic-shock-resuscitation
#20
Patrick M Honore, Herbert D Spapen
BACKGROUND: Swift and adequate fluid loading is a cornerstone of septic shock therapy. Yet, careful assessment of volume responsiveness and volume amount during the resuscitation process is a prerequisite. Both overzealous initial fluid administration and late fluid overload are harmful and may be associated with increased mortality. MAIN BODY: Static (i.e., central venous or pulmonary artery occlusion) pressure readings are erroneous for monitoring fluid resuscitation and should be abandoned...
2017: Journal of Intensive Care
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