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Non-invasive cardiac output monitoring

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https://www.readbyqxmd.com/read/27854379/longitudinal-maternal-haemodynamics-in-fetal-growth-restriction-in-pregnancies-at-high-risk-for-placental-insufficiency
#1
Daniel Stott, Papastefanou I, Daniela Paraschiv, Katherine Clark, Nikos A Kametas
OBJECTIVE: Fetal growth restriction is a powerful determinant of poor perinatal outcomes. Our previous work in pregnancies at high risk for the development of hypertension found that early in pregnancy maternal haemodynamics show impaired cardiovascular adaptation in gestations destined to deliver growth-restricted infants. In this study, we serially monitored maternal haemodynamics from the first through to the third trimester in a similar high-risk cohort, in order to determine if, in pregnancies complicated by growth-restriction, these distinct haemodynamic profiles found at presentation persisted throughout pregnancy...
October 31, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27766592/measurement-of-cardiovascular-function-using-a-novel-view-sharing-pet-reconstruction-method-and-tracer-kinetic-analysis
#2
Paul R Territo, Amanda A Riley, Brian P McCarthy, Gary D Hutchins
Recent advancements in PET instrumentation have made the non-invasive assessment of cardiovascular function in small animals a reality. The majority of small animal PET systems use stationary detector gantries, thus affording high temporal resolution imaging of cardiac function. Systems designed to maximize spatial resolution and detection sensitivity employing rotating gantry designs are suboptimal when high temporal resolution imaging is needed. To overcome this limitation, the current work developed a novel view-sharing data analysis scheme suitable for dynamic cardiac PET imaging using (18)F-NaF as the tracer and tracer kinetic model analysis...
December 2016: EJNMMI Physics
https://www.readbyqxmd.com/read/27721369/applicability-of-impedance-cardiography-during-heart-failure-flare-ups
#3
Saulius Sadauskas, Albinas Naudžiūnas, Alvydas Unikauskas, Edita Mašanauskienė, Giedrė Bakšytė, Andrius Macas
BACKGROUND Heart failure (HF) accounts for about 5% of all causes of urgent hospital admissions, and the overall mortality of HF patients within 1 year after hospitalization is 17-45%. Transthoracic impedance cardiography (ICG) is a safe, non-invasive diagnostic technique that helps to detect various parameters that define different cardiac functions. The aim of this study was to investigate the value of ICG parameters in patients hospitalized due to HF flare-ups. MATERIAL AND METHODS The study included 60 patients (24 women and 36 men) who were admitted to intensive care units because of an acute episode of HF without signs of myocardial infarction...
October 9, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27705969/non-invasive-haemodynamic-monitoring-in-pregnancy-a-comparative-study-using-ultrasound-and-bioreactance
#4
Dimuthu Vinayagam, Sophie Bowe, Elaine Sheehan, Basky Thilaganathan, Asma Khalil
BACKGROUND: Due to the importance of cardiovascular dysfunction and advances in the development and use of non-invasive cardiac output (CO) monitoring devices, there is a growing interest in their use in the obstetric population. The aim of this study was to compare two commercially available, non-invasive CO monitors in the assessment of heart rate (HR), stroke volume (SV), CO, cardiac index (CI) and total peripheral resistance (TPR) in an obstetric population. METHODS: This was a prospective, comparative study including two groups...
October 6, 2016: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/27680820/h4-a-cross-comparison-study-of-nicom%C3%A2-and-transthoracic-echocardiography-in-pregnancy
#5
D Vinayagam, O Patey, B Thilaganthan, A Khalil
INTRODUCTION: There is a paucity of data regarding the accuracy, reliability and reproducibility of non-invasive cardiac output monitors in pregnancy. The aim of this study was to compare cardiac output estimations obtained by USCOM® against those obtained by 2-dimensional transthoracic echocardiography (TTE). METHODS: Prospective, observational study in which 114 healthy pregnant and postpartum women had haemodynamic indices obtained by USCOM® and TTE. Accuracy and precision statistics (Bland Altman analysis) are presented as bias, precision, 95% limits of agreement (LOA) and mean percentage difference (MPD)...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680815/g4-does-maternal-obesity-have-an-adverse-effect-on-haemodynamics
#6
D Vinayagam, Juan Gutierrez, J Binder, B Thilaganathan, A Khalil
BACKGROUND: The increase in the prevalence of and the adverse risks to both mother and foetus associated with maternal obesity is a global concern. The adverse cardiovascular risk associated with obesity is well-known, however, there is a paucity of data assessing central haemodynamics in class 3 (morbid) obesity (BMI440 kg/m(2)) during pregnancy. OBJECTIVE: To compare the haemodynamic profile in women with class 3 maternal obesity against those with a normal BMI (20-30 kg/m(2)), using ultrasound-based, non-invasive haemodynamic monitoring...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680814/g3-intraoperative-haemodynamic-monitoring-during-high-risk-caesarean-section-a-comparison-between-bioreactance-nicom-r-and-pressure-waveform-analysis-lidcorapidr-preliminary-results
#7
D Vinayagam, S Bampoe, B Thilaganathan, A Khalil
BACKGROUND: Intraoperative haemodynamic monitoring is carried out in high-risk surgical patients, often using invasive methods, including pulmonary artery catheterisation. Early goal-directed therapy in high-risk surgical patients reduces tissue hypoxia, organ failure and improves outcomes. Significant maternal morbidity arises as a result of perioperative haemorrhage. At present, heart rate and brachial blood pressure are used as proxy markers to aid in fluid resuscitation, however, we know that these exhibit minimal change during early stages of shock, and are poor indicators of the adequacy of therapeutic intervention...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680791/b5-a-cross-comparison-study-of-uscom%C3%A2-and-transthoracic-echocardiography-in-pregnancy
#8
D Vinayagam, O Patey, B Thilaganthan, A Khalil
INTRODUCTION: There is a paucity of data regarding the accuracy, reliability and reproducibility of non-invasive cardiac output monitors in pregnancy. The aim of this study was to compare cardiac output estimations obtained by USCOM® against those obtained by two-dimensional transthoracic echocardiography (TTE). METHODS: Prospective, observational study in which 114 healthy pregnant and postpartum women had haemodynamic indices obtained by USCOM® and TTE. Accuracy and precision statistics (Bland Altman analysis) are presented as bias, precision, 95% limits of agreement (LOA) and mean percentage difference (MPD)...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27667644/level-of-agreement-between-cardiac-output-measurements-using-nexfin-%C3%A2-and-thermodilution-in-morbidly-obese-patients-undergoing-laparoscopic-surgery
#9
P Schraverus, M M Kuijpers, J Coumou, C A Boly, C Boer, S van Kralingen
Morbidly obese patients are at increased risk of intra-operative haemodynamic instability, which may necessitate intensive monitoring. Non-invasive monitoring is increasingly used to measure cardiac output; however, it is unknown whether the weight-based algorithm utilised in these devices is applicable to patients with morbid obesity. We compared the level of agreement and trending ability of non-invasive cardiac output measurements (Nexfin(®) ) with the gold-standard thermodilution technique in 30 morbidly obese patients undergoing laparoscopic surgery...
December 2016: Anaesthesia
https://www.readbyqxmd.com/read/27620877/low-cardiac-index-and-stroke-volume-on-admission-are-associated-with-poor-outcome-in-critically-ill-burn-patients-a-retrospective-cohort-study
#10
Sabri Soussi, Benjamin Deniau, Axelle Ferry, Charlotte Levé, Mourad Benyamina, Véronique Maurel, Maïté Chaussard, Brigitte Le Cam, Alice Blet, Maurice Mimoun, Jêrome Lambert, Marc Chaouat, Alexandre Mebazaa, Matthieu Legrand
BACKGROUND: Impact of early systemic hemodynamic alterations and fluid resuscitation on outcome in the modern burn care remains controversial. We investigate the association between acute-phase systemic hemodynamics, timing of fluid resuscitation and outcome in critically ill burn patients. METHODS: Retrospective, single-center cohort study was conducted in a university hospital. Forty critically ill burn patients with total body surface area (TBSA) burn-injured >20 % with invasive blood pressure and cardiac output monitoring (transpulmonary thermodilution technique) within 8 h from trauma were included...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27529179/haemodynamic-transition-after-birth-a-new-tool-for-non-invasive-cardiac-output-monitoring
#11
Thomas Freidl, Nariae Baik, Gerhard Pichler, Bernhard Schwaberger, Barbara Zingerle, Alexander Avian, Berndt Urlesberger
BACKGROUND: Substantial haemodynamic changes occur during the first minutes after birth. Currently, only heart rate (HR) and arterial oxygen saturation are routinely used to monitor haemodynamic transition after birth. OBJECTIVES: The aim of the present study was to continuously assess haemodynamic changes during transition in term infants for the first time by using electrical velocimetry (EV), a new method of non-invasive cardiac output monitoring (NICOM), based on impedance cardiography technology...
August 17, 2016: Neonatology
https://www.readbyqxmd.com/read/27407021/a-dynamic-view-of-dynamic-indices
#12
Marc O Fischer, Pierre G Guinot, Matthieu Biais, Yazine Mahjoub, Jihad Mallat, Emmanuel Lorne
Dynamic indices (based on cardiopulmonary interactions in mechanically ventilated patients in sinus rhythm) have been developed as simple tools for predicting fluid responsiveness in the absence of cardiac output monitoring. Although the earliest dynamic indices relied on the invasive measurement of pulse pressure variations or stroke volume variations, the most recently developed indices are based on non-invasive photoplethysmography. However, a number of confounding factors have been found to decrease the clinical value of these indices...
July 12, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27404397/validation-of-maternal-cardiac-output-assessed-by-transthoracic-echocardiography-against-pulmonary-artery-catheters-in-severely-ill-pregnant-women-a-prospective-comparative-study-and-systematic-review
#13
Jérôme Cornette, Suretha Laker, Bridget Jeffery, Hennie Lombaard, Andrie Alberts, Dimitris Rizopoulos, Jolien W Roos-Hesselink, Robert C Pattinson
INDRODUCTION: Most severe pregnancy complications are characterized by profound hemodynamic disturbances. There is a need for validated hemodynamic monitoring systems in pregnant women. Pulmonary artery catheterization (PAC) using thermodilution is the clinical gold standard for CO measurements. However this reference methods is nowadays rarely performed due to its invasive nature. Transthoracic echocardiography (TTE) allows non-invasive determination of the cardiac output (CO). We aimed to validate TTE against PAC for CO determination in pregnant women...
July 12, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27396807/monitoring-high-risk-patients-minimally-invasive-and-non-invasive-possibilities
#14
REVIEW
Jochen Renner, Matthias Grünewald, Berthold Bein
Over the past decades, there has been considerable progress in the field of less invasive haemodynamic monitoring technologies. Substantial evidence has accumulated, which supports the continuous measurement and optimization of flow-based variables such as stroke volume, that is, cardiac output, in order to prevent occult hypoperfusion and consequently to improve patients' outcome in the perioperative setting. However, there is a striking gap between the developments in haemodynamic monitoring and the increasing evidence to implement defined treatment protocols based on the measured variables, and daily clinical routine...
June 2016: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/27393077/cardiovascular-emergencies-and-cardiac-arrest-in-a-pregnant-woman
#15
Anne-Sophie Ducloy-Bouthors, Max Gonzalez-Estevez, Benjamin Constans, Alexandre Turbelin, Catherine Barre-Drouard
No abstract text is available yet for this article.
July 5, 2016: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/27311826/fev-manoeuvre-induced-changes-in-breath-voc-compositions-an-unconventional-view-on-lung-function-tests
#16
Pritam Sukul, Jochen K Schubert, Peter Oertel, Svend Kamysek, Khushman Taunk, Phillip Trefz, Wolfram Miekisch
Breath volatile organic compound (VOC) analysis can open a non-invasive window onto pathological and metabolic processes in the body. Decades of clinical breath-gas analysis have revealed that changes in exhaled VOC concentrations are important rather than disease specific biomarkers. As physiological parameters, such as respiratory rate or cardiac output, have profound effects on exhaled VOCs, here we investigated VOC exhalation under respiratory manoeuvres. Breath VOCs were monitored by means of real-time mass-spectrometry during conventional FEV manoeuvres in 50 healthy humans...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27246939/minimally-invasive-cardiac-output-monitoring-agreement-of-oesophageal-doppler-lidcorapid%C3%A2-and-vigileo-flotrac%C3%A2-monitors-in-non-cardiac-surgery
#17
COMPARATIVE STUDY
T D Phan, R Kluger, C Wan
There is lack of data about the agreement of minimally invasive cardiac output monitors, which make it impossible to determine if they are interchangeable or differ objectively in tracking physiological trends. We studied three commonly used devices: the oesophageal Doppler and two arterial pressure-based devices, the Vigileo FloTrac™ and LiDCOrapid™. The aim of this study was to compare the agreement of these three monitors in adult patients undergoing elective non-cardiac surgery. Measurements were taken at baseline and after predefined clinical interventions of fluid, metaraminol or ephedrine bolus...
May 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27246932/autocalibrating-pulse-contour-analysis-based-on-radial-artery-applanation-tonometry-for-continuous-non-invasive-cardiac-output-monitoring-in-intensive-care-unit-patients-after-major-gastrointestinal-surgery-a-prospective-method-comparison-study
#18
COMPARATIVE STUDY
J Y Wagner, M Langemann, G Schön, S Kluge, D A Reuter, B Saugel
The T-Line(®) system (Tensys(®) Medical Inc., San Diego, CA, USA) non-invasively estimates cardiac output (CO) using autocalibrating pulse contour analysis of the radial artery applanation tonometry-derived arterial waveform. We compared T-Line CO measurements (TL-CO) with invasively obtained CO measurements using transpulmonary thermodilution (TDCO) and calibrated pulse contour analysis (PC-CO) in patients after major gastrointestinal surgery. We compared 1) TL-CO versus TD-CO and 2) TL-CO versus PC-CO in 27 patients treated in the intensive care unit (ICU) after major gastrointestinal surgery...
May 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27196051/dynamic-measurement-of-hemodynamic-parameters-and-cardiac-preload-in-adults-with-dengue-a-prospective-observational-study
#19
Vipa Thanachartwet, Anan Wattanathum, Duangjai Sahassananda, Petch Wacharasint, Supat Chamnanchanunt, Ei Khine Kyaw, Akanitt Jittmittraphap, Mali Naksomphun, Manoon Surabotsophon, Varunee Desakorn
Few previous studies have monitored hemodynamic parameters to determine the physiological process of dengue or examined inferior vena cava (IVC) parameters to assess cardiac preload during the clinical phase of dengue. From January 2013 to July 2015, we prospectively studied 162 hospitalized adults with confirmed dengue viral infection using non-invasive cardiac output monitoring and bedside ultrasonography to determine changes in hemodynamic and IVC parameters and identify the types of circulatory shock that occur in patients with dengue...
2016: PloS One
https://www.readbyqxmd.com/read/27106495/a-retrospective-analysis-of-liver-resection-performed-without-central-venous-pressure-monitoring
#20
D B Wax, J Zerillo, P Tabrizian, M Schwartz, B Hill, H-M Lin, S DeMaria
BACKGROUND: Studies have suggested that blood loss can be reduced during liver resection by monitoring and maintaining low central venous pressure (CVP) through fluid restriction or other means, but such a strategy carries risks to the patient including those inherent to central venous catheterization. We sought to characterize fluid management and blood loss during liver resections done without CVP monitoring. METHODS: Retrospective data were extracted from electronic anesthesia records for 993 liver resections...
October 2016: European Journal of Surgical Oncology
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