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https://www.readbyqxmd.com/read/29593197/noninvasive-continuous-blood-pressure-monitoring-by-the-clearsight-system-during-robot-assisted-laparoscopic-radical-prostatectomy
#1
Yoko Sakai, Tsutsumi Yasuo M, Takuro Oyama, Chiaki Murakami, Nami Kakuta, Katsuya Tanaka
Robot-assisted laparoscopic radical prostatectomy (RALRP) is commonly performed in the surgical treatment of prostate cancer. However, the steep Trendelenburg position (25) and pneumoperitoneum required for this procedure can sometimes cause hemodynamic changes. Although blood pressure is traditionally monitored invasively during RALRP, the ClearSight system (BMEYE, Amsterdam, The Netherlands) enables a totally noninvasive and simple continuous blood pressure and cardiac output monitoring based on finger arterial pressure pulse contour analysis...
2018: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/29560351/cardiac-output-monitoring-by-pulse-contour-analysis-the-technical-basics-of-less-invasive-techniques
#2
REVIEW
Jörn Grensemann
Routine use of cardiac output (CO) monitoring became available with the introduction of the pulmonary artery catheter into clinical practice. Since then, several systems have been developed that allow for a less-invasive CO monitoring. The so-called "non-calibrated pulse contour systems" (PCS) estimate CO based on pulse contour analysis of the arterial waveform, as determined by means of an arterial catheter without additional calibration. The transformation of the arterial waveform signal as a pressure measurement to a CO as a volume per time parameter requires a concise knowledge of the dynamic characteristics of the arterial vasculature...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29544369/comparison-of-three-haemodynamic-monitoring-methods-in-comatose-post-cardiac-arrest-patients
#3
Henrik Staer-Jensen, Kjetil Sunde, Espen Rostrup Nakstad, Jan Eritsland, Geir Øystein Andersen
OBJECTIVES: Haemodynamic monitoring during post arrest care is important to optimise treatment. We compared stroke volume measured by minimally-invasive monitoring devices with or without thermodilution calibration, and transthoracic echocardiography (TTE), and hypothesised that thermodilution calibration would give stroke volume index (SVI) more in agreement with TTE during targeted temperature management (TTM). DESIGN: Comatose out-of-hospital cardiac arrest survivors receiving TTM (33 °C for 24 hrs) underwent haemodynamic monitoring with arterial pulse contour analyses with (PiCCO2®) and without (FloTrac® /Vigileo® monitor® ) transpulmonary thermodilution calibration...
March 16, 2018: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/29510691/a-preliminary-study-evaluating-cardiac-output-measurement-using-pressure-recording-analytical-method-pram-in-anaesthetized-dogs
#4
Angela Briganti, Flavia Evangelista, Paola Centonze, Annaliso Rizzo, Francesco Bentivegna, Antonio Crovace, Francesco Staffieri
BACKGROUND: Haemodynamic variations normally occur in anaesthetized animals, in relation to the animal status, administered drugs, sympathetic and parasympathetic tone, fluid therapy and surgical stimulus. The possibility to measure some cardiovascular parameters, such as cardiac output (CO), during anaesthesia would be beneficial for both the anaesthesia management and its outcome. New techniques for the monitoring of CO are aimed at finding methods which are non invasive, accurate and with good trending ability, which can be used in a clinical setting...
March 6, 2018: BMC Veterinary Research
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
#5
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/29443764/assessment-of-interchangeability-rate-between-2-methods-of-measurements-an-example-with-a-cardiac-output-comparison-study
#6
Emmanuel Lorne, Momar Diouf, Robert B P de Wilde, Marc-Olivier Fischer
The Bland-Altman (BA) and percentage error (PE) methods have been previously described to assess the agreement between 2 methods of medical or laboratory measurements. This type of approach raises several problems: the BA methodology constitutes a subjective approach to interchangeability, whereas the PE approach does not take into account the distribution of values over a range. We describe a new methodology that defines an interchangeability rate between 2 methods of measurement and cutoff values that determine the range of interchangeable values...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29441350/perioperative-goal-directed-therapy-using-invasive-uncalibrated-pulse-contour-analysis
#7
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
https://www.readbyqxmd.com/read/29395757/standardized-model-of-porcine-resuscitation-using-a-custom-made-resuscitation-board-results-in-optimal-hemodynamic-management
#8
Jakob Wollborn, Eva Ruetten, Bjoern Schlueter, Joerg Haberstroh, Ulrich Goebel, Martin A Schick
AIM: Standardized modeling of cardiac arrest and cardiopulmonary resuscitation (CPR) is crucial to evaluate new treatment options. Experimental porcine models are ideal, closely mimicking human-like physiology. However, anteroposterior chest diameter differs significantly, being larger in pigs and thus poses a challenge to achieve adequate perfusion pressures and consequently hemodynamics during CPR, which are commonly achieved during human resuscitation. The aim was to prove that standardized resuscitation is feasible and renders adequate hemodynamics and perfusion in pigs, using a specifically designed resuscitation board for a pneumatic chest compression device...
January 22, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29380189/respiratory-changes-in-subclavian-vein-diameters-predicts-fluid-responsiveness-in-intensive-care-patients-a-pilot-study
#9
Raphaël Giraud, Paul S Abraham, Pauline Brindel, Nils Siegenthaler, Karim Bendjelid
The present pilot study investigated whether respiratory variation in subclavian vein (SCV) diameters correlates with fluid responsiveness in mechanically ventilated patients. Monocentric, prospective clinical study on fluid responsiveness in adult sedated, mechanically ventilated ICU patient, monitored with the PiCCO™ system (Pulsion Medical System, Germany), and requiring a fluid challenge (FC). A 10-min fluid bolus of 500 mL of 0.9% saline was administered. Cardiac output (CO) and dynamic parameters [stroke volume variation (SVV) and pulse pressure variation (PPV)] measured by transpulmonary thermodilution and pulse contour analysis (PiCCO™) as well as classical hemodynamic parameters were recorded at baseline and after FC...
January 29, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29374922/-effects-of-application-of-pulse-contour-cardiac-output-monitoring-technology-in-early-treatment-of-patients-with-large-area-burns
#10
D Y Wang, W G Xie, M M Xi, Z Li, B Wang
Objective: To analyze the changes and relationship of early hemodynamic indexes of patients with large area burns monitored by pulse contour cardiac output (PiCCO) monitoring technology, so as to assess the guiding value of this technology in the treatment of patients with large area burns during shock period. Methods: Eighteen patients with large area burns, confirming to the study criteria, were admitted to our unit from May 2016 to May 2017. Pulse contour cardiac output index (PCCI), systemic vascular resistance index (SVRI), global end-diastolic volume index (GEDVI), and extravascular lung water index (EVLWI) of patients were monitored by PiCCO instrument from admission to post injury day (PID) 7, and they were calibrated and recorded once every four hours...
January 20, 2018: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29367093/a-mini-fluid-challenge-of-150ml-predicts-fluid-responsiveness-using-modelflow-r-pulse-contour-cardiac-output-directly-after-cardiac-surgery
#11
Annemieke Smorenberg, Thomas G V Cherpanath, Bart F Geerts, Robert B P de Wilde, Jos R C Jansen, Jacinta J Maas, A B Johan Groeneveld
STUDY OBJECTIVE: The mini-fluid challenge may predict fluid responsiveness with minimum risk of fluid overloading. However, the amount of fluid as well as the best manner to evaluate the effect is unclear. In this prospective observational pilot study, the value of changes in pulse contour cardiac output (CO) measurements during mini-fluid challenges is investigated. DESIGN: Prospective observational study. SETTING: Intensive Care Unit of a university hospital...
January 19, 2018: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29352326/noninvasive-pulse-contour-analysis-for-determination-of-cardiac-output-in-patients-with-chronic-heart-failure
#12
Sebastian Roth, Henrik Fox, Uwe Fuchs, Uwe Schulz, Angelika Costard-Jäckle, Jan F Gummert, Dieter Horstkotte, Olaf Oldenburg, Thomas Bitter
BACKGROUND: Determination of cardiac output (CO) is essential in diagnosis and management of heart failure (HF). The gold standard to obtain CO is invasive assessment via thermodilution (TD). Noninvasive pulse contour analysis (NPCA) is supposed as a new method of CO determination. However, a validation of this method in HF is pending and performed in the present study. METHODS: Patients with chronic-stable HF and reduced left ventricular ejection fraction (LVEF ≤ 45%; HF-REF) underwent right heart catheterization including TD...
January 19, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29251031/correlation-between-time-lag-of-arterial-plethysmographic-waveforms-and-systemic-vascular-resistance-a-prospective-study
#13
Radhakrishnan Muthuchellappan, Ramesh V J, Umamaheswara Rao Ganne S, Thennarasu K, Anjana Jacob, Sripathy G, Bhadrinarayan V, Mohanvelu K
Blood pressure (BP), a surrogate of cardiac output (CO), is also dependent on systemic vascular resistance (SVR). But SVR is not routinely monitored in daily clinical practice. We hypothesise that the time difference between the peripheral arterial waveform and the finger plethysmographic waveform (time lag index - TLi) could indicate the systemic vascular resistance. In this study, we correlated TLi with the systemic vascular resistance measured by minimally invasive CO monitor (pulse contour analysis). SVR changes in response to administration of mannitol were studied...
January 2018: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29229263/the-hemodynamic-effects-of-different-pacing-modalities-after-cardiopulmonary-bypass-in-patients-with-reduced-left-ventricular-function
#14
R C W Gielgens, I H F Herold, A H M van Straten, B M van Gelder, F A Bracke, H H M Korsten, M A Soliman Hamad, R A Bouwman
OBJECTIVES: Patients with decreased left ventricular function undergoing cardiac surgery have a greater chance of difficult weaning from cardiopulmonary bypass and a poorer clinical outcome. Directly after weaning, interventricular dyssynchrony, paradoxical septal motion, and even temporary bundle-branch block might be observed. In this study, the authors measured arterial dP/dtmax , mean arterial pressure (MAP), and cardiac index using transpulmonary thermodilution, pulse contour analysis, and femoral artery catheter and compared the effects between right ventricular (A-RV) and biventricular (A-BiV) pacing on these parameters...
February 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29208025/change-in-cardiac-output-during-trendelenburg-maneuver-is-a-reliable-predictor-of-fluid-responsiveness-in-patients-with-acute-respiratory-distress-syndrome-in-the-prone-position-under-protective-ventilation
#15
Hodane Yonis, Laurent Bitker, Mylène Aublanc, Sophie Perinel Ragey, Zakaria Riad, Floriane Lissonde, Aurore Louf-Durier, Sophie Debord, Florent Gobert, Romain Tapponnier, Claude Guérin, Jean-Christophe Richard
BACKGROUND: Predicting fluid responsiveness may help to avoid unnecessary fluid administration during acute respiratory distress syndrome (ARDS). The aim of this study was to evaluate the diagnostic performance of the following methods to predict fluid responsiveness in ARDS patients under protective ventilation in the prone position: cardiac index variation during a Trendelenburg maneuver, cardiac index variation during an end-expiratory occlusion test, and both pulse pressure variation and change in pulse pressure variation from baseline during a tidal volume challenge by increasing tidal volume (VT) to 8 ml...
December 5, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29174123/intraoperative-anesthetic-management-of-lung-transplantation-center-specific-practices-and-geographic-and-centers-size-differences
#16
Roland Tomasi, David Betz, Sophie Schlager, Tobias Kammerer, Dominik J Hoechter, Thomas Weig, Peter Slinger, Laura V Klotz, Bernhard Zwißler, Nandor Marczin, Vera von Dossow
OBJECTIVE: Although increasing evidence in lung transplantation (LTx) suggests that intraoperative management could influence outcomes, there are no guidelines available regarding intraoperative management of LTx. The overall goal of the study was to assess geographic and center volume-specific clinical practices in perioperative management. DESIGN: Prospective data analysis. SETTING: Online survey from a single-center university hospital...
February 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29090260/assessment-of-method-agreement-between-two-minimally-invasive-hemodynamic-measurements-in-septic-shock-patients-on-high-doses-of-vasopressor-drugs-a-preliminary-study
#17
Oana Antal, Mihai Mărginean, Natalia Hagău
BACKGROUND: Minimally invasive hemodynamic monitoring is still controversial among the methods used to assess the hemodynamic profile of the septic shock patient. The aim of this study was to test the level of agreement between two different devices. METHODS: We collected 385 data entries during 12-hour intervals from four critically ill patients with septic shock and high doses of vasoactive therapy using two minimally invasive methods at the same time: Vigileo™ device which uses the pulse contour principle, and EV1000™ monitoring platform which uses the transpulmonary thermodilution principle...
October 2017: Romanian Journal of Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/29060473/an-adaptive-prediction-method-for-signal-fusion
#18
Alexander Holland, Shadnaz Asgari
Many biomedical signal processing applications include the significant challenge of sensor data fusion. In this work, an adaptive prediction method fuses a relatively higher bandwidth, lower absolute accuracy (fast) signal with a relatively lower bandwidth, higher absolute accuracy (accurate) signal of the same quantity into a combined signal that is both fast and accurate. Iterative estimates of model parameters minimize a regularized mean square prediction error that arises from using the fast signal to predict the accurate signal...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28984797/validation-of-radial-artery-based-uncalibrated-pulse-contour-method-pulsioflex-in-critically-ill-patients-a-observational-study
#19
Jörn Grensemann, Jerome M Defosse, Meike Willms, Uwe Schiller, Frank Wappler, Samir G Sakka
BACKGROUND: Because of their simplicity, uncalibrated pulse contour (UPC) methods have been introduced into clinical practice in critical care but are often validated with a femoral arterial waveform. OBJECTIVE: We aimed to test the accuracy of cardiac index (CI) measurements and trending ability from a radial artery with one UPC. DESIGN: An observational study. SETTING: Tertiary care mixed-surgical ICU. Data were obtained from April 2015 to July 2016...
November 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28977981/effects-of-liraglutide-on-hemodynamic-parameters-in-patients-with-heart-failure
#20
Jin Ying Zhang, Xin Yun Wang, Xiang Wang
Glucagon-like peptide-1 analogues improve left ventricular function in patients with acute myocardial infarction. This study aimed to evaluate the effects of liraglutide on hemodynamic parameters in patients with heart failure. A total of 78 patients with heart failure were enrolled in this study between August 2014 and November 2015. Of these, 52 patients were randomized 1:1 to receive either liraglutide or placebo for 7 days. Hemodynamic measurements were made using transpulmonary thermodilution and arterial pulse contour analysis...
September 22, 2017: Oncotarget
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