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stroke volume variation

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https://www.readbyqxmd.com/read/28719516/echocardiography-and-passive-leg-raising-in-the-postoperative-period-a-prospective-observational-study
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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...
June 28, 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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28595621/transthoracic-echocardiography-an-accurate-and-precise-method-for-estimating-cardiac-output-in-the-critically-ill-patient
#15
Pablo Mercado, Julien Maizel, Christophe Beyls, Dimitri Titeca-Beauport, Magalie Joris, Loay Kontar, Antoine Riviere, Olivier Bonef, Thierry Soupison, Christophe Tribouilloy, Bertrand de Cagny, Michel Slama
BACKGROUND: Cardiac output (CO) monitoring is a valuable tool for the diagnosis and management of critically ill patients. In the critical care setting, few studies have evaluated the level of agreement between CO estimated by transthoracic echocardiography (CO-TTE) and that measured by the reference method, pulmonary artery catheter (CO-PAC). The objective of the present study was to evaluate the precision and accuracy of CO-TTE relative to CO-PAC and the ability of transthoracic echocardiography to track variations in CO, in critically ill mechanically ventilated patients...
June 9, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28593456/impact-of-hemodynamic-goal-directed-resuscitation-on-mortality-in-adult-critically-ill-patients-a-systematic-review-and-meta-analysis
#16
Maria Cronhjort, Olof Wall, Erik Nyberg, Ruifeng Zeng, Christer Svensen, Johan Mårtensson, Eva Joelsson-Alm
The effect of hemodynamic optimization in critically ill patients has been challenged in recent years. The aim of the meta-analysis was to evaluate if a protocolized intervention based on the result of hemodynamic monitoring reduces mortality in critically ill patients. We performed a systematic review and meta-analysis according to the Cochrane Handbook for Systematic Reviews of Interventions. The study was registered in the PROSPERO database (CRD42015019539). Randomized controlled trials published in English, reporting studies on adult patients treated in an intensive care unit, emergency department or equivalent level of care were included...
June 8, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28583532/prediction-of-fluid-responsiveness-by-a-non-invasive-respiratory-systolic-time-interval-variation-using-heart-sound-signals-in-recipients-undergoing-liver-transplantation
#17
S-H Kim, Y-J Moon, J-W Kim, J-G Song, G-S Hwang
BACKGROUND: The fluid management of cirrhotic patients undergoing liver transplantation (LT) is challenging. Phonocardiography, a graphic recording of heart sounds, provides valuable information concerning heart function and hemodynamic condition. We assessed whether the systolic time interval (STI) and its respiratory variation could predict fluid responsiveness in cirrhotic patients undergoing LT. METHODS: Thirty LT recipients who needed volume expansion were included...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28580763/knowledge-based-reconstruction-for-measurement-of-right-ventricular-volumes-on-cardiovascular-magnetic-resonance-images-in-a-mixed-population
#18
Elise D Pieterman, Ricardo P J Budde, Daniëlle Robbers-Visser, Ron T van Domburg, Willem A Helbing
OBJECTIVE: Follow-up of right ventricular performance is important for patients with congenital heart disease. Cardiac magnetic resonance imaging is optimal for this purpose. However, observer-dependency of manual analysis of right ventricular volumes limit its use. Knowledge-based reconstruction is a new semiautomatic analysis tool that uses a database including knowledge of right ventricular shape in various congenital heart diseases. We evaluated whether knowledge-based reconstruction is a good alternative for conventional analysis...
June 5, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28575332/effects-of-arterial-load-variations-on-dynamic-arterial-elastance-an-experimental-study
#19
M I Monge García, P Guijo González, M Gracia Romero, A Gil Cano, A Rhodes, R M Grounds, M Cecconi
Background.: Dynamic arterial elastance (Ea dyn ), the relationship between pulse pressure variation (PPV) and stroke volume variation (SVV), has been suggested as a functional assessment of arterial load. The aim of this study was to evaluate the impact of arterial load changes during acute pharmacological changes, fluid administration, and haemorrhage on Ea dyn . Methods.: Eighteen anaesthetized, mechanically ventilated New Zealand rabbits were studied. Arterial load changes were induced by phenylephrine ( n =9) or nitroprusside ( n =9)...
June 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28557569/the-global-end-diastolic-volume-gedv-could-be-more-appropiate-to-fluid-management-than-central-venous-pressure-cvp-during-closed-hyperthermic-intrabdominal-chemotherapy-with-co2-circulation
#20
Francisco Javier Redondo, David Padilla, Pedro Villarejo, Victor Baladron, Patricia Faba, Sergio Sánchez, José Ramón Muñoz-Rodríguez, Natalia Bejarano
BACKGROUND: Closed hyperthermic intraperitoneal chemotherapy (HIPEC) may increase abdominal pressure and effects of hemodynamic changes due to maintenance hyperthermia. Our aim was to analyze the safety and effectiveness of our closed technique with CO2 circulation in management fluid status and hemodynamic parameters by means of cardiac preload control measured by Global End Diastolic Values (GEDV) and a gas exchanger. MATERIAL AND METHODS: A Pilot Clinical Study that included 18 advanced ovarian cancer patients undergoing citoreductive surgery and HIPEC...
May 30, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
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