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Bioimpedance cardiac output monitoring

Jonathan S Howard, Cherilyn N McLester, Thomas W Evans, John R McLester, Jimmy P Calloway
The PhysioFlow™ is a piece of equipment that uses bioimpedance cardiography to measure central hemodynamics. The purpose of this research was to explore the novel approach of monitoring central hemodynamics during free weight resistance exercise using bioimpedance cardiography throughout a 5 repetition maximum (5RM). Thirty participants ranging from beginner to advanced lifters (16 males and 14 females) completed a 5RM for back squat, seated push press, and bicep curl while connected to the PhysioFlow™ to assess the response of heart rate (HR), stroke volume (SV), cardiac output (Q), and ejection fraction (EF)...
2018: International Journal of Exercise Science
Lee S Nguyen, Pierre Squara
Critically ill patients require close hemodynamic monitoring to titrate treatment on a regular basis. It allows administering fluid with parsimony and adjusting inotropes and vasoactive drugs when necessary. Although invasive monitoring is considered as the reference method, non-invasive monitoring presents the obvious advantage of being associated with fewer complications, at the expanse of accuracy, precision, and step-response change. A great many methods and devices are now used over the world, and this article focuses on several of them, providing with a brief review of related underlying physical principles and validation articles analysis...
2017: Frontiers in Medicine
Aurora Magliocca, Emanuele Rezoagli, Thomas Anthony Anderson, Sara Maria Burns, Fumito Ichinose, Hovig Vatche Chitilian
BACKGROUND: Orthotopic liver transplantation (OLT) is characterized by significant intraoperative hemodynamic variability. Accurate and real-time cardiac output (CO) monitoring aids clinical decision making during OLT. The purpose of this study is to compare accuracy, precision, and trending ability of CO estimation obtained noninvasively using pulse wave transit time (estimated continuous cardiac output [esCCO; Nihon Kohden, Tokyo, Japan]) or thoracic bioimpedance (ICON; Osypka Medical GmbH, Berlin, Germany) to thermodilution cardiac output (TDCO) measured with a pulmonary artery catheter...
January 2018: Anesthesia and Analgesia
Mohammed H Elwan, Jeremy Hue, Samira J Green, Salah M Eltahan, Mark R Sims, Timothy J Coats
OBJECTIVE: There are a number of cardiac output (CO) monitors that could potentially be used in the ED. Two of the most promising methods, thoracic electrical bioimpedance and suprasternal Doppler, have not been directly compared. The aim of this study was to investigate the feasibility of CO monitoring using suprasternal Doppler and bioimpedance in emergency care and compare haemodynamic data obtained from both monitors. METHODS: Haemodynamic measurements were made on the same group of patients using bioimpedance (Niccomo, Medis, Germany) and suprasternal Doppler (USCOM, Sydney, Australia)...
August 2017: Emergency Medicine Australasia: EMA
Thomas Leclercq, Marc Lilot, Thomas Schulz, Alexandre Meyer, Fadi Farhat, Jean-Luc Fellahi
The feasibility and clinical utility of the endotracheal cardiac output monitor (ECOM) to optimize intraoperative hemodynamics and improve short-term outcome in off-pump coronary artery bypass grafting (OPCAB) is unknown. We aimed to compare ECOM with a standard of care in that specific surgical setting. Twenty consecutive adult ECOM-monitored patients undergoing OPCAB were prospectively included (ECOM group) and retrospectively compared to 42 patients scheduled for similar surgery without ECOM monitoring (Control group)...
February 2018: Journal of Clinical Monitoring and Computing
Chang Amber Liu, Jinghu Sui, Charles J Coté, Thomas A Anderson
BACKGROUND AND OBJECTIVES: Caudal anesthesia is a common and effective regional anesthesia technique in pediatric patients. The addition of epinephrine to local anesthetics in caudal anesthesia is a frequent practice; however, changes in hemodynamic and cardiac parameters produced by epinephrine in caudal anesthesia are not well studied. Using data collected with the ICON noninvasive cardiac output monitor, we examined the hemodynamic changes associated with the administration of epinephrine containing local anesthetics during caudal anesthesia in children...
November 2016: Regional Anesthesia and Pain Medicine
D Lo Presti, G Gagliardi, G M Tiralongo, I Pisani, D Farsetti, R L Scala, G P Novelli, B Vasapollo, A Andreoli, H Valensise
INTRODUCTION: Several studies have demonstrated the correlation between maternal obesity and pregnancy complications. Obese women seem to be at higher risk to develop late preeclampsia, which shows a more favorable perinatal outcome compared to the early form. The assessment of total vascular resistance (TVR) could play an additional role in the detection of these patients. Targets: To identify patients at higher risk of hypertensive complications through the assessment of pre-pregnancy maternal fat mass (FM) and TVR...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
Michail E Keramidas, Roger Kölegård, Igor B Mekjavic, Ola Eiken
The study examined the effects of hypoxia and horizontal bed rest, separately and in combination, on peak oxygen uptake (V̇o2 peak) during upright cycle ergometry. Ten male lowlanders underwent three 21-day confinement periods in a counterbalanced order: 1) normoxic bed rest [NBR; partial pressure of inspired O2 (PiO2 ) = 133.1 ± 0.3 mmHg]; 2) hypoxic bed rest (HBR; PiO2 = 90.0 ± 0.4 mmHg), and 3) hypoxic ambulation (HAMB; PiO2 = 90.0 ± 0.4 mmHg). Before and after each confinement, subjects performed two incremental-load trials to exhaustion, while inspiring either room air (AIR), or a hypoxic gas (HYPO; PiO2 = 90...
August 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
Michael R King, T Anthony Anderson, Jinghu Sui, Guoluo He, Kwun Yee T Poon, Charles J Coté
STUDY OBJECTIVE: To assess the effects of desaturation on stroke index (SI), cardiac index (CI), and heart rate (HR) using the ICON continuous noninvasive cardiac output monitor in children undergoing general anesthesia. DESIGN: Retrospective analysis of a prospectively collected data set. SETTING: Pediatric operating rooms in a tertiary academic medical center. PATIENTS: Children younger than 20 years who experienced desaturation while undergoing general anesthesia...
August 2016: Journal of Clinical Anesthesia
Lisa Sangkum, Geoffrey L Liu, Ling Yu, Hong Yan, Alan D Kaye, Henry Liu
Although cardiac output (CO) by pulmonary artery catheterization (PAC) has been an important guideline in clinical management for more than four decades, some studies have questioned the clinical efficacy of CO in certain patient populations. Further, the use of CO by PAC has been linked to numerous complications including dysrhythmia, infection, rupture of pulmonary artery, injury to adjacent arteries, embolization, pulmonary infarction, cardiac valvular damage, pericardial effusion, and intracardiac catheter knotting...
June 2016: Journal of Anesthesia
Pierre-Grégoire Guinot, Eugénie Bernard, Kévin Deleporte, Sandra Petiot, Hervé Dupont, Emmanuel Lorne
INTRODUCTION: The objective of this study was to test whether stroke volume (SV) variations in response to a fixed mini-fluid challenge (ΔSV100) measured by impedance cardiography (ICG) could predict an increase in arterial pressure with volume expansion in spontaneously breathing patients under spinal anaesthesia. METHODS: Thirty-four patients, monitored by ICG who required intravenous fluid to expand their circulating volume during surgery under spinal anaesthesia, were studied...
December 2015: Anaesthesia, Critical Care & Pain Medicine
G M Tiralongo, D Lo Presti, I Pisani, G Gagliardi, R L Scala, G P Novelli, B Vasapollo, A Andreoli, H Valensise
INTRODUCTION: Maternal cardiovascular system adapts to pregnancy, thanks to complex physiological mechanisms that involve cardiac output, total vascular resistance and water body distribution. Abnormalities of these adaptive mechanisms are connected with hypertensive disorders. OBJECTIVE: To identify patients at a high risk of developing hypertensive complications of pregnancy during the first trimester of pregnancy, through the use of non-invasive methods such as USCOM (Ultrasonic Cardiac Output Monitor) and Bioimpedance...
April 2015: Pregnancy Hypertension
B Saugel, M Cecconi, J Y Wagner, D A Reuter
The determination of blood flow, i.e. cardiac output, is an integral part of haemodynamic monitoring. This is a review on noninvasive continuous cardiac output monitoring in perioperative and intensive care medicine. We present the underlying principles and validation data of the following technologies: thoracic electrical bioimpedance, thoracic bioreactance, vascular unloading technique, pulse wave transit time, and radial artery applanation tonometry. According to clinical studies, these technologies are capable of providing cardiac output readings noninvasively and continuously...
April 2015: British Journal of Anaesthesia
Djordje G Jakovljevic, Michael I Trenell, Guy A MacGowan
Noninvasive continuous cardiac output monitoring may have wide clinical applications in anaesthesiology, emergency care and cardiology. It can improve outcomes, establish diagnosis, guide therapy and help risk stratification. The present article describes the theory behind the two noninvasive continuous monitoring methods for cardiac output assessment such as bioimpedance and bioreactance. The review discusses the advantages and disadvantages of these methods and highlights the recent method comparison studies...
December 2014: Best Practice & Research. Clinical Anaesthesiology
Robert H Thiele, Karsten Bartels, Tong-Joo Gan
PURPOSE: Goal-directed fluid therapy is an integral component of many Enhanced Recovery After Surgery (ERAS) protocols currently in use. The perioperative clinician is faced with a myriad of devices promising to deliver relevant physiologic data to better guide fluid therapy. The goal of this review is to provide concise information to enable the clinician to make an informed decision when choosing a device to guide goal-directed fluid therapy. PRINCIPAL FINDINGS: The focus of many devices used for advanced hemodynamic monitoring is on providing measurements of cardiac output, while other, more recent, devices include estimates of fluid responsiveness based on dynamic indices that better predict an individual's response to a fluid bolus...
February 2015: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
Hoiyin Cheung, Quan Dong, Rong Dong, Buwei Yu
PURPOSE: This observational study was designed to evaluate the clinical value of cardiac output (CO) obtained via bioreactance (NICOM™) as compared with values of CO obtained via thermodilution (using pulmonary artery catheter, Vigilance™) and the thoracic bioimpedance (™), in patients undergoing off-pump coronary artery bypass surgery. METHODS: Fifty American Society of Anesthesiologists physical status I-III patients, aged 38-81 years, scheduled for off-pump coronary artery bypass surgery were enrolled in this study...
June 2015: Journal of Anesthesia
Jean-Luc Fellahi, David Brossier, Fabien Dechanet, Marc-Olivier Fischer, Vladimir Saplacan, Jean-Louis Gérard, Jean-Luc Hanouz
The objective was to compare the impact of an early goal-directed hemodynamic therapy based on cardiac output monitoring (Endotracheal Cardiac Output Monitor, ECOM) with a standard of care on postoperative outcome following coronary surgery. This prospective, controlled, parallel-arm trial randomized 100 elective primary coronary artery bypass grafting patients to a study group (ECOM; n = 50) or a control group (control; n = 50). In the ECOM group, hemodynamic therapy was guided by respiratory stroke volume variation and cardiac index given by the ECOM system...
June 2015: Journal of Clinical Monitoring and Computing
Pierre-Grégoire Guinot, Eugenie Bernard, Fanny Defrancq, Sandra Petiot, Yazine Majoub, Herve Dupont, Emmanuel Lorne
BACKGROUND: The ability to predict fluid responsiveness in spontaneously breathing patients under spinal anaesthesia is desirable. OBJECTIVE: The objective of this study was to test whether variations in stroke volume (SV) in response to a fixed mini-fluid challenge (ΔSV100) measured by thoracic impedance cardiography (ICG) can predict fluid responsiveness in spontaneously breathing patients under spinal anaesthesia. DESIGN: A prospective observational study...
September 2015: European Journal of Anaesthesiology
Kirpal Kohli, Jeff Liu, Devin Schellenberg, Anand Karvat, Ash Parameswaran, Parvind Grewal, Steven Thomas
BACKGROUND: In radiotherapy, temporary translocations of the internal organs and tumor induced by respiratory and cardiac activities can undesirably lead to significantly lower radiation dose on the targeted tumor but more harmful radiation on surrounding healthy tissues. Respiratory and cardiac gated radiotherapy offers a potential solution for the treatment of tumors located in the upper thorax. The present study focuses on the design and development of simultaneous acquisition of respiratory and cardiac signal using electrical impedance technology for use in dual gated radiotherapy...
2014: Biomedical Engineering Online
Guilherme Schettino, Rezende Ederlon, Ciro Leite Mendes, Alvaro Réa-Neto, Cid Marcos David, Suzana Margareth Ajeje Lobo, Alberto Barros, Eliézer Silva, Gilberto Friedman, José Luiz Gomes do Amaral, Marcelo Park, Maristela Monachini, Mirella Cristine de Oliveira, Murillo Santucci César Assunção, Nelson Akamine, Patrícia Veiga C Mello, Renata Andréa Pietro Pereira, Rubens Costa Filho, Sebastião Araújo, Sérgio Félix Pinto, Sérgio Ferreira, Simone Mattoso Mitushima, Sydney Agareno, Yuzeth Nóbrega de Assis Brilhante
BACKGROUND AND OBJECTIVES: Cardiac output and preload as absolute data do not offer helpful information about the hemodynamic of critically ill patients. However, monitoring the response of these variables to volume challenge or inotropic drugs is a very useful tool in the critical care setting, particularly for patients with signs of tissue hypoperfusion. Although PAC remains the " gold standard" to measure cardiac output and preload, new and alternative technologies were developed to evaluate these hemodynamic variables...
March 2006: Revista Brasileira de Terapia Intensiva
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