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Bioimpedance cardiac output monitoring

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https://www.readbyqxmd.com/read/27755489/the-use-of-epinephrine-in-caudal-anesthesia-increases-stroke-volume-and-cardiac-output-in-children
#1
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
https://www.readbyqxmd.com/read/27680813/g2-low-pregestational-fat-mass-and-subsequent-maternal-cardiovascular-maladaptation-in-early-pregnancy-the-missing-link-for-preeclampsia
#2
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
https://www.readbyqxmd.com/read/27342877/planhab-hypoxia-exaggerates-the-bed-rest-induced-reduction-in-peak-oxygen-uptake-during-upright-cycle-ergometry
#3
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
https://www.readbyqxmd.com/read/27290971/age-related-incidence-of-desaturation-events-and-the-cardiac-responses-on-stroke-index-cardiac-index-and-heart-rate-measured-by-continuous-bioimpedance-noninvasive-cardiac-output-monitoring-in-infants-and-children-undergoing-general-anesthesia
#4
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
https://www.readbyqxmd.com/read/26961819/minimally-invasive-or-noninvasive-cardiac-output-measurement-an-update
#5
REVIEW
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
https://www.readbyqxmd.com/read/26541217/mini-fluid-challenge-can-predict-arterial-pressure-response-to-volume-expansion-in-spontaneously-breathing-patients-under-spinal-anaesthesia
#6
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
https://www.readbyqxmd.com/read/25943644/assessment-of-total-vascular-resistance-and-total-body-water-in-normotensive-women-during-the-first-trimester-of-pregnancy-a-key-for-the-prevention-of-preeclampsia
#7
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
https://www.readbyqxmd.com/read/25596280/noninvasive-continuous-cardiac-output-monitoring-in-perioperative-and-intensive-care-medicine
#8
REVIEW
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
https://www.readbyqxmd.com/read/25480768/bioimpedance-and-bioreactance-methods-for-monitoring-cardiac-output
#9
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
https://www.readbyqxmd.com/read/25391734/inter-device-differences-in-monitoring-for-goal-directed-fluid-therapy
#10
REVIEW
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
https://www.readbyqxmd.com/read/25381090/correlation-of-cardiac-output-measured-by-non-invasive-continuous-cardiac-output-monitoring-nicom-and-thermodilution-in-patients-undergoing-off-pump-coronary-artery-bypass-surgery
#11
COMPARATIVE STUDY
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 (BioZ.com™), 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
https://www.readbyqxmd.com/read/25380955/early-goal-directed-therapy-based-on-endotracheal-bioimpedance-cardiography-a-prospective-randomized-controlled-study-in-coronary-surgery
#12
RANDOMIZED CONTROLLED TRIAL
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
https://www.readbyqxmd.com/read/25329455/mini-fluid-challenge-predicts-fluid-responsiveness-during-spontaneous-breathing-under-spinal-anaesthesia-an-observational-study
#13
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
https://www.readbyqxmd.com/read/25316509/prototype-development-of-an-electrical-impedance-based-simultaneous-respiratory-and-cardiac-monitoring-system-for-gated-radiotherapy
#14
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
https://www.readbyqxmd.com/read/25310331/-brazilian-consensus-of-monitoring-and-hemodynamic-support-part-iii-alternative-methods-for-cardiac-output-monitoring-and-volemia-estimation
#15
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
https://www.readbyqxmd.com/read/25251758/cardiac-output-monitoring-a-contemporary-assessment-and-review
#16
REVIEW
Robert H Thiele, Karsten Bartels, Tong J Gan
OBJECTIVE: An increasing number of minimally or noninvasive devices are available to measure cardiac output in the critical care setting. This article reviews the underlying physical principles of these devices in addition to examining both animal and human comparative studies in an effort to allow clinicians to make informed decisions when selecting a device to measure cardiac output. DATA SOURCES: Peer-reviewed manuscripts indexed in PubMed. STUDY SELECTION: A systematic search of the PubMed database for articles describing the use of cardiac output monitors yielded 1,526 sources that were included in the analysis...
January 2015: Critical Care Medicine
https://www.readbyqxmd.com/read/25169689/exploring-hemodynamics-a-review-of-current-and-emerging-noninvasive-monitoring-techniques
#17
REVIEW
Alexander Johnson, Mehr Mohajer-Esfahani
The lack of randomized controlled trials suggesting improved outcomes with pulmonary artery catheter use and pressure-based hemodynamic monitoring has led to a decrease in pulmonary artery catheter use. However, an increasing amount of literature supporting stroke volume optimization (SVO) has caused a paradigm shift from pressure-based to flow-based techniques. This article discusses emerging flow-based techniques, supporting evidence, and considerations for use in critical care for methods such as Doppler, pulse contour, bioimpedance, bioreactance, and exhaled carbon dioxide...
September 2014: Critical Care Nursing Clinics of North America
https://www.readbyqxmd.com/read/24916144/continuous-noninvasive-cardiac-output-in-children-is-this-the-next-generation-of-operating-room-monitors-initial-experience-in-402-pediatric-patients
#18
Charles J Coté, Jinghu Sui, Thomas Anthony Anderson, Somaletha T Bhattacharya, Erik S Shank, Pacifico M Tuason, David A August, Audrius Zibaitis, Paul G Firth, Gennadiy Fuzaylov, Michael R Leeman, Christine L Mai, Jesse D Roberts
BACKGROUND: Electrical Cardiometry(™) (EC) estimates cardiac parameters by measuring changes in thoracic electrical bioimpedance during the cardiac cycle. The ICON(®), using four electrocardiogram electrodes (EKG), estimates the maximum rate of change of impedance to peak aortic blood acceleration (based on the premise that red blood cells change from random orientation during diastole (high impedance) to an aligned state during systole (low impedance)). OBJECTIVE: To determine whether continuous cardiac output (CO) data provide additional information to current anesthesia monitors that is useful to practitioners...
February 2015: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/24746334/cardiac-output-measurement-by-bioimpedance-and-noninvasive-pulse-contour-analysis-compared-with-the-continuous-pulmonary-artery-thermodilution-technique
#19
COMPARATIVE STUDY
Saskia W M C Maass, Paul M H J Roekaerts, Marcus D Lancé
OBJECTIVE: The aim of the present study was to compare 2 noninvasive cardiac output measurement methods with the continuous cardiac output thermodilution (CCO-TD) method. DESIGN: A single-center prospective design. SETTING: A university hospital. PARTICIPANTS: Fifty-three consecutive patients scheduled for elective, non-emergent cardiac surgery. INTERVENTIONS: With each participant the cardiac output was measured using 3 methods: CCO-TD, the Endotracheal Cardiac Output Monitor (ECOM), and the Nexfin monitor...
June 2014: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/24621777/perioperative-sequential-monitoring-of-hemodynamic-parameters-in-patients-with-pheochromocytoma-using-the-non-invasive-cardiac-system-nicas
#20
Yayoi Matsuda, Hisaya Kawate, Shingo Shimada, Chitose Matsuzaki, Hiromi Nagata, Masahiro Adachi, Keizo Ohnaka, Masatoshi Nomura, Ryoichi Takayanagi
Surgical treatment of pheochromocytoma is associated with a high risk of hemodynamic instability. To reduce the risk of perioperative complications, adequate medical treatment to normalize blood pressure and restore blood volume is required. Accurate evaluation of the circulating blood volume (CBV) in perioperative patients with pheochromocytoma is clinically important. In the present study, we adopted whole-body bioimpedance monitoring technique using the Non-Invasive Cardiac System (NICaS), which can non-invasively measure cardiac output (CO) values...
2014: Endocrine Journal
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