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Cardiac output; haemodynamic;

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https://www.readbyqxmd.com/read/28911286/the-effect-of-a-surgery-specific-cardiac-output-guided-haemodynamic-algorithm-on-outcomes-in-patients-undergoing-pancreaticoduodenectomy-in-a-high-volume-centre-a-retrospective-comparative-study
#1
L Weinberg, J Banting, L Churilov, R L McLeod, K Fernandes, I Chao, T Ho, D Ianno, V Liang, V Muralidharan, C Christophi, M Nikfarjam
In this retrospective observational study performed in a high-volume hepatobiliary-pancreatic unit, we evaluated the effect of a surgery-specific goal-directed therapy (GDT) physiologic algorithm on complications and length of hospital stay. We compared patients who underwent pancreaticoduodenectomy with either a standardised Enhanced Recovery After Surgery program (usual care group), or a standardised Enhanced Recovery After Surgery program in combination with a surgery-specific cardiac output-guided algorithm (GDT group)...
September 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28895094/fluid-loading-and-norepinephrine-infusion-mask-the-left-ventricular-preload-decrease-induced-by-pleural-effusion
#2
Kristian Borup Wemmelund, Viktor Kromann Ringgård, Simon Tilma Vistisen, Janus Adler Hyldebrandt, Erik Sloth, Peter Juhl-Olsen
BACKGROUND: Pleural effusion (PLE) may lead to low blood pressure and reduced cardiac output. Low blood pressure and reduced cardiac output are often treated with fluid loading and vasopressors. This study aimed to determine the impact of fluid loading and norepinephrine infusion on physiologic determinants of cardiac function obtained by ultrasonography during PLE. METHODS: In this randomised, blinded, controlled laboratory study, 30 piglets (21.9 ± 1.3 kg) had bilateral PLE (75 mL/kg) induced...
September 11, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28892884/effect-of-metaboreflex-on-cardiovascular-system-in-subjects-of-metabolic-syndrome
#3
Pramita Dubey, Sunita Tiwari, Manish Bajpai, Kalpana Singh, Praveen Jha
INTRODUCTION: Metaboreflex is a reflex in which muscle receptors send signals regarding metabolic (metabolites accumulation like lactic acid, potassium, adenosine) conditions of the muscles to nucleus tractus solitarius via afferent III and IV fibres to cause haemodynamic adjustments in order to regulate blood flow on the basis of the status of contracting muscle. Dysregulation in its mechanism in metabolic syndrome is demonstrated. AIM: To study the effect of metaboreflex by both isometric and rhythmic handgrip exercise on CVS parameters {Blood Pressure (BP), Cardiac Output (CO) and Systemic Vascular Resistance (SVR)} in subjects of metabolic syndrome...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28880931/restrictive-intraoperative-fluid-optimisation-algorithm-improves-outcomes-in-patients-undergoing-pancreaticoduodenectomy-a-prospective-multicentre-randomized-controlled-trial
#4
Laurence Weinberg, Damian Ianno, Leonid Churilov, Ian Chao, Nick Scurrah, Clive Rachbuch, Jonathan Banting, Vijaragavan Muralidharan, David Story, Rinaldo Bellomo, Chris Christophi, Mehrdad Nikfarjam
We aimed to evaluate perioperative outcomes in patients undergoing pancreaticoduodenectomy with or without a cardiac output goal directed therapy (GDT) algorithm. We conducted a multicentre randomised controlled trial in four high volume hepatobiliary-pancreatic surgery centres. We evaluated whether the additional impact of a intraoperative fluid optimisation algorithm would influence the amount of fluid delivered, reduce fluid related complications, and improve length of hospital stay. Fifty-two consecutive adult patients were recruited...
2017: PloS One
https://www.readbyqxmd.com/read/28878952/pathophysiology-of-exercise-intolerance-in-chronic-diseases-the-role-of-diminished-cardiac-performance-in-mitochondrial-and-heart-failure-patients
#5
Jodi McCoy, Matthew Bates, Christopher Eggett, Mario Siervo, Sophie Cassidy, Jane Newman, Sarah A Moore, Grainne Gorman, Michael I Trenell, Lazar Velicki, Petar M Seferovic, John G F Cleland, Guy A MacGowan, Doug M Turnbull, Djordje G Jakovljevic
OBJECTIVE: Exercise intolerance is a clinical hallmark of chronic conditions. The present study determined pathophysiological mechanisms of exercise intolerance in cardiovascular, neuromuscular, and metabolic disorders. METHODS: In a prospective cross-sectional observational study 152 patients (heart failure reduced ejection fraction, n=32; stroke, n=34; mitochondrial disease, n=28; type two diabetes, n=28; and healthy controls, n=30) performed cardiopulmonary exercise testing with metabolic and haemodynamic measurements...
2017: Open Heart
https://www.readbyqxmd.com/read/28874243/central-regional-anaesthesia-in-patients-with-aortic-stenosis-a-systematic-review
#6
Sofia Johansson, Morten Nikolaj Lind
INTRODUCTION: Aortic stenosis is a valvular lesion that poses several haemodynamic challenges for the anaesthesiologist. The use of central regional anaesthesia is traditionally regarded as contraindicated in patients with severe aortic stenosis due to its sympatholytic effect, potentially causing loss of vascular tone and ultimately diminished cardiac output. The aim of this paper was to review current literature to find evidence for or against the use of neuroaxial blockade in patients with aortic stenosis...
September 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28866972/comparison-of-continous-wave-doppler-ultrasound-monitor-and-echocardiography-to-assess-cardiac-output-in-intensive-care-patients
#7
Ahmad Elgendy, Ian M Seppelt, Andrew S Lane
BACKGROUND: Continuous-wave Doppler (CWD) ultrasound through the left ventricular outflow tract is one modality used for non-invasive cardiac output measurement. The ultrasonic cardiac output monitor (USCOM) is a relatively new monitor which uses a small, transcutaneous ultrasound probe to measure cardiac output with CWD via the suprasternal window. It is faster and less complex to train new users than conventional echocardiography. In addition to stroke volume (SV), the USCOM can calculate stroke volume variation (SVV) and the Smith-Madigan inotropy index (SMII), which is an estimate of the pre-load independent contractility of the myocardium...
September 2017: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/28855727/noninvasive-oscillometric-cardiac-output-determination-in-the-intensive-care-unit-comparison-with-invasive-transpulmonary-thermodilution
#8
Alexander Reshetnik, Friederike Compton, Anna Schölzel, Markus Tölle, Walter Zidek, Markus van der Giet
Assessment of the cardiac output (CO) is usually performed with invasive techniques requiring specialized equipment in the intensive care unit (ICU). With TEL-O-GRAPH (TG), CO can be derived from the oscillometrically obtained brachial pulse wave during the measurement of brachial blood pressure. CO and stroke volume (SV) determinations with TG were compared with transpulmonary thermodilution measurements with the PICCO system (PICCO) in 38 haemodynamically unstable ICU patients with a total of 84 comparison measurements performed...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28836157/relevance-of-haemodynamics-in-treating-pre-eclampsia
#9
REVIEW
Christoph Lees, Enrico Ferrazzi
Blood pressure is a way of describing the end result of changes in cardiac output, intravascular volume and peripheral resistance. It has certain advantages in that it is a reproducible and easily measured parameter, but in itself, it offers only a limited understanding of the underlying haemodynamics. In pregnancy, profound haemodynamic changes occur and in hypertensive diseases of pregnancy defining a condition by blood pressure alone risks missing the underlying cause. Partly, this has been a problem of ascribing the cause of hypertensive syndromes to the placenta which has inhibited rigorous research into other possible causes of haemodynamic dysfunction...
August 23, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28818853/interobserver-agreement-and-image-quality-of-functional-cardiac-ultrasound-measures-used-in-a-randomised-trial-of-delayed-cord-clamping-in-preterm-infants
#10
Himanshu Popat, Kristy P Robledo, Lucille Sebastian, Nicholas Evans, Andrew Gill, Martin Kluckow, Sanjay Sinhal, Koert de Waal, William Tarnow-Mordi, David Osborn
OBJECTIVE: Functional cardiac ultrasound measures are used clinically and in trials for assessing the haemodynamic status of newborn infants. Superior vena cava (SVC) flow and right ventricular output (RVO) are established measures of systemic blood flow on the first postnatal day. The objective was to assess image quality and interobserver agreement of these measures in preterm infants enrolled in a randomised trial of immediate versus delayed cord clamping. DESIGN AND SETTING: Image quality and interobserver agreement for SVC flow, RVO and ductus arteriosus (DA) size were assessed on measurements taken at 3-6, 6-12 and 20-28 hours for the first 10 infants enrolled at each of four sites (total 40)...
August 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28796394/maternal-haemodynamics-in-normal-pregnancies-and-in-pregnancies-affected-by-pre-eclampsia
#11
Daniel Stott, Obianuju Nzelu, Kypros H Nicolaides, Nikos A Kametas
OBJECTIVES: To determine if in a high risk group in the first half of pregnancy, women who developed pre-eclampsia (PE) with fetal growth restriction (PE-FGR) demonstrate distinct haemodynamics compared to those with PE in the absence of FGR (PE-only). METHODS: Cardiac output (CO), peripheral vascular resistance (PVR) and mean arterial pressure (MAP) were measured at the first hospital visit at 9-24 weeks' gestation in 69 women who had chronic hypertension and 67 who had a hypertensive disorder in a previous pregnancy...
August 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28753499/non-invasive-cardiac-output-monitoring-nicom-%C3%A2-can-predict-the-evolution-of-uteroplacental-disease-results-of-the-prospective-handle-study
#12
Cathy Monteith, Lisa McSweeney, Colm R Breatnach, Anne Doherty, Lucy Shirren, Elizabeth C Tully, Patrick Dicker, Fergal D Malone, Afif El-Khuffash, Etaoin Kent
OBJECTIVES: We aimed to firstly identify the different haemodynamic profiles amongst nulliparous women who develop either gestational hypertension (GH), pre-eclampsia (PE), normotensive fetal growth restriction (FGR) versus unaffected pregnancies using non-invasive cardiac output monitoring (NICOM(®)). Our second primary objective was to assess the ability of NICOM(®) derived variables to predict the evolution of PE, GH and FGR. STUDY DESIGN: Low risk nulliparous women were enrolled in a single center prospective observational study...
July 20, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28747363/changes-in-cardiac-output-and-cerebral-oxygenation-during-prone-and-supine-sleep-positioning-in-healthy-term-infants
#13
Tai-Wei Wu, Rey-In Lien, Istvan Seri, Shahab Noori
OBJECTIVE: To investigate the changes in systemic and cerebral haemodynamics between supine and prone sleep in healthy term infants during the early postnatal period. DESIGN/METHODS: Healthy term infants without congenital anomalies, patent ductus arteriosus and/or small for gestational age status were enrolled. Infants were placed in supine (SP1), prone (PP) and back in supine (SP2) position for 15 min each while asleep. Cardiac output (CO) and stroke volume (SV) were assessed by electrical velocimetry (EV) and echocardiography (echo), and cerebral regional oxygen saturation (CrSO2) in the frontal lobes was monitored by near-infrared spectroscopy...
July 26, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28729141/effects-of-transjugular-intrahepatic-portosystemic-shunt-tips-on-blood-volume-distribution-in-patients-with-cirrhosis
#14
Troels M Busk, Flemming Bendtsen, Jens H Henriksen, Stefan Fuglsang, Jens O Clemmesen, Fin S Larsen, Søren Møller
BACKGROUND: Cirrhosis is accompanied by portal hypertension with splanchnic and systemic arterial vasodilation, and central hypovolaemia. A transjugular intrahepatic portosystemic shunt (TIPS) alleviates portal hypertension, but also causes major haemodynamic changes. AIMS: To investigate effects of TIPS on regional blood volume distribution, and systemic haemodynamics. METHODS: Thirteen cirrhotic patients had their regional blood volume distribution determined with gamma-camera technique before and after TIPS...
June 27, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28719470/diurnal-variation-and-repeatability-of-arterial-stiffness-and-cardiac-output-measurements-in-the-third-trimester-of-uncomplicated-pregnancy
#15
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/28710899/effects-of-dobutamine-dopamine-phenylephrine-and-noradrenaline-on-systemic-haemodynamics-and-intestinal-perfusion-in-isoflurane-anaesthetised-horses
#16
C Dancker, K Hopster, K Rohn, S B Kästner
BACKGROUND: In the horse, effects of cardiovascular-active drugs on local perfusion of the gastrointestinal tract are poorly understood. OBJECTIVES: To determine the effect of drugs commonly used to support blood pressure, on local intestinal blood flow and tissue oxygenation under isoflurane anaesthesia. STUDY DESIGN: In vivo randomised crossover experiment. METHODS: Ten horses were anaesthetised with isoflurane. After 90 min of equilibration three doses (μg/kg bwt/min) of dobutamine (DOB 0...
July 15, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28698881/assessment-of-haemodynamic-response-to-nonselective-beta-blockers-in-portal-hypertension-by-phase-contrast-magnetic-resonance-angiography
#17
Natasha McDonald, David M L Lilburn, Neil J Lachlan, Gillian Macnaught, Dilip Patel, Arjun N A Jayaswal, Peter C Hayes, Scott I Semple, Jonathan A Fallowfield
A significant unmet need exists for accurate, reproducible, noninvasive diagnostic tools to assess and monitor portal hypertension (PHT). We report the first use of quantitative MRI markers for the haemodynamic assessment of nonselective beta-blockers (NSBB) in PHT. In a randomized parallel feasibility study in 22 adult patients with PHT and a clinical indication for NSBB, we acquired haemodynamic data at baseline and after 4 weeks of NSBB (propranolol or carvedilol) using phase-contrast MR angiography (PC-MRA) in selected intra-abdominal vessels...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28641607/the-use-of-nesiritide-in-patients-with-critical-cardiac-disease
#18
Ronald A Bronicki, Michele Domico, Paul A Checchia, Curtis E Kennedy, Ayse Akcan-Arikan
OBJECTIVE: We evaluated the use of nesiritide in children with critical CHD, pulmonary congestion, and inadequate urine output despite undergoing conventional diuretic therapy. DESIGN: We conducted a retrospective analysis of 11 patients with critical CHD, comprising 18 infusions, each of which occurred during separate hospitalisations. Haemodynamic parameters were assessed, and the stage of acute kidney injury was determined before and throughout the duration of therapy using a standardised definition of acute kidney injury - The Kidney Disease: Improving Global Outcomes criteria...
June 23, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28637179/is-delayed-surgical-revascularization-in-acute-myocardial-infarction-useful-or-dangerous-new-insights-into-an-old-problem
#19
Philippe Grieshaber, Peter Roth, Lukas Oster, Tobias M Schneider, Gerold Görlach, Bernd Nieman, Andreas Böning
OBJECTIVES: Haemodynamically stable patients admitted for coronary artery bypass grafting in acute myocardial infarction often undergo delayed surgery in order to avoid the risks of emergency surgery. However, initially stable patients undergoing delayed surgery may develop low cardiac output syndrome (LCOS) during the waiting period, which might be a major drawback of this strategy. We aim to define risk factors and clinical consequences of LCOS during the waiting period. METHODS: A total of 530 consecutive patients with acute myocardial infarction (33% non-ST-segment elevation myocardial infarction and 67% ST-segment-elevation myocardial infarction) underwent isolated coronary artery bypass grafting between 2008 and 2013...
June 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28633352/aortopulmonary-window-results-of-repair-beyond-infancy%C3%A2
#20
Sachin Talwar, Bharat Siddharth, Saurabh Kumar Gupta, Shiv Kumar Choudhary, Shyam Sunder Kothari, Rajnish Juneja, Anita Saxena, Balram Airan
OBJECTIVES: To study the anatomic and haemodynamic data and results of surgery in patients undergoing surgical repair of aortopulmonary window beyond infancy. METHODS: Between July 2005 and December 2015, 23 patients, older than 1 year undergoing surgery for aortopulmonary window were analysed retrospectively. Postoperative clinical and echocardiography follow-up were performed. RESULTS: Median age and weight at repair was 4 years (range 14 months-12 years) and 12 kg (range 3...
June 13, 2017: Interactive Cardiovascular and Thoracic Surgery
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