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Cardiac output monitor

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https://www.readbyqxmd.com/read/27922879/the-changes-in-pulse-pressure-variation-or-stroke-volume-variation-after-a-tidal-volume-challenge-reliably-predict-fluid-responsiveness-during-low-tidal-volume-ventilation
#1
Sheila Nainan Myatra, Natesh R Prabu, Jigeeshu Vasishtha Divatia, Xavier Monnet, Atul Prabhakar Kulkarni, Jean-Louis Teboul
OBJECTIVES: Stroke volume variation and pulse pressure variation do not reliably predict fluid responsiveness during low tidal volume ventilation. We hypothesized that with transient increase in tidal volume from 6 to 8 mL/kg predicted body weight, that is, "tidal volume challenge," the changes in pulse pressure variation and stroke volume variation will predict fluid responsiveness. DESIGN: Prospective, single-arm study. SETTING: Medical-surgical ICU in a university hospital...
December 5, 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27897352/functional-magnetic-resonance-imaging-for-in-vivo-quantification-of-pulmonary-hypertension-in-the-sugen-5416-hypoxia-mouse
#2
Ellen C Breen, Miriam Scadeng, N Chin Lai, Fiona Murray, Timothy D Bigby
Pulmonary arterial hypertension (PAH) is characterized by elevated pulmonary artery pressures and right heart failure. PAH mouse models are instrumental in understanding disease pathophysiology. However, few methods are available to evaluate right cardiac function in small animals. In this study, magnetic resonance imaging (MRI) was used to measure in vivo cardiac dimensions in the Sugen 5416/hypoxia mouse model. Pulmonary hypertension (PH) was induced in C57BL/6 mice by three weeks of exposure to 10% oxygen and VEGF receptor inhibition (20 mg kg(-1) SU5416)...
November 29, 2016: Experimental Physiology
https://www.readbyqxmd.com/read/27891584/an-observational-study-of-the-macro-and-micro-haemodynamic-implications-of-epidural-anaesthesia-in-children
#3
L Triffterer, P Marhofer, G Lechner, T C Marksz, O Kimberger, W Schmid, D Marhofer
The haemodynamic implications of epidural anaesthesia in children are poorly documented. We report macro- and micro-haemodynamic data from an observational study of 25 children ranging from neonates to six-years old, who underwent surgery conducted with a specific combination of monitoring systems. We analysed 90 min of study-related monitoring after epidural catheterisation, with skin incision taking place after around 30 min. We recorded macrohaemodynamic parameters (monitored using LiDCOrapid) including heart rate, mean arterial pressure, cardiac output, stroke volume, systemic vascular resistance and stroke volume variation...
November 28, 2016: Anaesthesia
https://www.readbyqxmd.com/read/27888199/risk-factors-for-decreased-cardiac-output-after-coronary-artery-bypass-grafting-a-prospective-cohort-study
#4
Eduarda Ribeiro Dos Santos, Camila Takao Lopes, Vera Lucia Regina Maria, Alba Lucia Bottura Leite de Barros
BACKGROUND: No previous study has investigated the predictive risk factors of the nursing diagnosis of risk for decreased cardiac output after coronary artery bypass grafting (CABG). AIMS: This study aimed to identify the predictive risk factors of the nursing diagnosis of risk for decreased cardiac output after CABG. METHODS: This was a prospective cohort study performed at a cardiac university hospital in São Paulo, Brazil and 257 adult patients undergoing CABG were included...
November 25, 2016: European Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/27871513/disagreement-between-fourth-generation-flotrac-and-lidcorapid-measurements-of-cardiac-output-and-stroke-volume-variation-during-laparoscopic-colectomy
#5
Masato Nakasuji, Aki Okutani, Taeko Miyata, Norie Imanaka, Masuji Tanaka, Kae Nakasuji, Miwako Nagai
STUDY OBJECTIVE: To determine the agreement between cardiac output (CO) and stroke volume variation (SVV) measured simultaneously by the fourth generation FloTrac/Vigileo system and LiDCOrapid system during pneumoperitoneum in patients undergoing laparoscopic colectomy. DESIGN: Retrospective observational study. SETTINGS: Operating room in a general hospital. PATIENTS: Ten patients (American Society of Anesthesiologist 1 or 2) without preoperative anemia...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27858374/prediction-of-fluid-responsiveness-an-update
#6
REVIEW
Xavier Monnet, Paul E Marik, Jean-Louis Teboul
In patients with acute circulatory failure, the decision to give fluids or not should not be taken lightly. The risk of overzealous fluid administration has been clearly established. Moreover, volume expansion does not always increase cardiac output as one expects. Thus, after the very initial phase and/or if fluid losses are not obvious, predicting fluid responsiveness should be the first step of fluid strategy. For this purpose, the central venous pressure as well as other "static" markers of preload has been used for decades, but they are not reliable...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27854379/longitudinal-maternal-haemodynamics-in-fetal-growth-restriction-in-pregnancies-at-high-risk-for-placental-insufficiency
#7
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/27853180/piezoelectric-extraction-of-ecg-signal
#8
Mahmoud Al Ahmad
The monitoring and early detection of abnormalities or variations in the cardiac cycle functionality are very critical practices and have significant impact on the prevention of heart diseases and their associated complications. Currently, in the field of biomedical engineering, there is a growing need for devices capable of measuring and monitoring a wide range of cardiac cycle parameters continuously, effectively and on a real-time basis using easily accessible and reusable probes. In this paper, the revolutionary generation and extraction of the corresponding ECG signal using a piezoelectric transducer as alternative for the ECG will be discussed...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27849773/129-routine-use-of-noninvasive-cardiac-output-monitor-to-post-sah-hemodynamic-management-in-neuro-icu
#9
Kazumasu Sasaki, Tatsushi Mutoh, Tomoko Mutoh, Yasuyuki Taki, Tatsuya Ishikawa
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27849656/the-use-of-nesiritide-in-children-with-congenital-heart-disease
#10
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 congenital heart disease, pulmonary congestion, and inadequate urine output despite conventional diuretic therapy. DESIGN: We conducted a retrospective analysis of 26 consecutive patients, comprising 37 infusions occurring during separate hospitalizations. Hemodynamic variables, urine output, and serum creatinine levels were monitored prior to and throughout the duration of therapy with nesiritide...
November 15, 2016: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/27836099/-management-of-cardiogenic-shock-results-from-a-survey-in-france-and-belgium
#11
S Champion, N Deye
PURPOSE: Physician survey on cardiogenic shock management; recommendations for the management of patients with cardiogenic shock are based mostly on experts' opinion. METHODS: Overall 1585 emails were sent to "senior" intensive care physicians from France and Belgium from September 2014 to march 2015. Response rate was 10% (157 respondents). Agreement was assessed based on RAND/UCLA methodology. RESULTS: Continuous monitoring of cardiac output, vascular filling, noninvasive ventilation were deemed appropriate...
November 8, 2016: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/27836002/cardiac-dysfunction-induced-by-weaning-from-mechanical-ventilation-incidence-risk-factors-and-effects-of-fluid-removal
#12
Jinglun Liu, Feng Shen, Jean-Louis Teboul, Nadia Anguel, Alexandra Beurton, Nadia Bezaz, Christian Richard, Xavier Monnet
BACKGROUND: Weaning-induced pulmonary oedema (WiPO) is a well-recognised cause of failure of weaning from mechanical ventilation, but its incidence and risk factors have not been reliably described. We wanted to determine the incidence and risk factors in a population of critically ill patients. In addition, we wanted to describe the effects of diuretics when they are administered in this context. METHODS: We monitored 283 consecutive spontaneous breathing trials (SBT; T-piece trial) performed in 81 patients...
November 12, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27829710/early-norepinephrine-decreases-fluid-and-ventilatory-requirements-in-pediatric-vasodilatory-septic-shock
#13
Suchitra Ranjit, Rajeswari Natraj, Sathish Kumar Kandath, Niranjan Kissoon, Balasubramaniam Ramakrishnan, Paul E Marik
AIMS: We previously reported that vasodilatation was common in pediatric septic shock, regardless of whether they were warm or cold, providing a rationale for early norepinephrine (NE) to increase venous return (VR) and arterial tone. Our primary aim was to evaluate the effect of smaller fluid bolus plus early-NE versus the American College of Critical Care Medicine (ACCM) approach to more liberal fluid boluses and vasoactive-inotropic agents on fluid balance, shock resolution, ventilator support and mortality in children with septic shock...
October 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/27829180/changes-of-central-venous-oxygen-saturation-define-fluid-responsiveness-in-patients-with-septic-shock-a-prospective-observational-study
#14
Biao Xu, Xiaobo Yang, Chunyao Wang, Wei Jiang, Li Weng, Xiaoyun Hu, Jinmin Peng, Bin Du
PURPOSE: To evaluate whether the changes of central venous oxygen saturation (Scvo2) after fluid challenge can define fluid responsiveness in patients with septic shock. METHODS: In this prospective observational study, septic shock patients with invasive cardiac output monitoring requiring fluid challenge were included. Cardiac index (CI) and Scvo2 were measured before and after fluid challenges. The changes of CI (ΔCI) and the changes of Scvo2 (ΔScvo2) were calculated and analyzed using Pearson correlation...
October 19, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27826705/feasibility-and-accuracy-of-cardiac-right-to-left-shunt-detection-in-children-by-new-transpulmonary-ultrasound-dilution-method
#15
Martin Boehne, Mathias Baustert, Verena Paetzel, Dietmar Boethig, Harald Köditz, Nils Dennhardt, Philipp Beerbaum, Harald Bertram
Transpulmonary ultrasound dilution (TPUD) method, a novel indicator dilution (ID) technique for cardiac output measurement, detects and quantifies shunts, both in children and adults. However, its accuracy and reproducibility in cardiac right-to-left-shunt (RLS) detection have not been investigated. In a prospective observational study, we assessed the validity of TPUD algorithm for RLS detection in children with congenital heart disease (CHD) and proven RLS in comparison with controls without shunts between February 2010 and October 2011...
November 8, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27800645/serial-haemodynamic-monitoring-to-guide-treatment-of-maternal-hypertension-leads-to-a-reduction-in-severe-hypertension-rates
#16
Daniel Stott, Ioannis Papastefanou, Daniela Paraschiv, Katherine Clark, Nikos A Kametas
OBJECTIVE: Firstly, to examine if treatment for hypertension in pregnancy guided by the serial assessment of maternal central haemodynamics leads to a reduction in the rates of severe hypertension, defined as blood pressure greater than or equal to 160/110mmHg. Secondly, to assess the distinct longitudinal haemodynamic profiles associated with either beta-blocker monotherapy, vasodilator monotherapy, or dual agent therapy, and their relationship with outcomes including fetal growth restriction...
October 31, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27797015/hemodynamic-profiles-of-functional-and-dysfunctional-forms-of-repetitive-thinking
#17
Cristina Ottaviani, Jos F Brosschot, Antonia Lonigro, Barbara Medea, Ilse Van Diest, Julian F Thayer
BACKGROUND: The ability of the human brain to escape the here and now (mind wandering) can take functional (problem solving) and dysfunctional (perseverative cognition) routes. Although it has been proposed that only the latter may act as a mediator of the relationship between stress and cardiovascular disease, both functional and dysfunctional forms of repetitive thinking have been associated with blood pressure (BP) reactivity of the same magnitude. However, a similar BP reactivity may be caused by different physiological determinants, which may differ in their risk for cardiovascular pathology...
October 28, 2016: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/27793856/prediction-of-hemodynamics-under-left-ventricular-assist-device
#18
Takamori Kakino, Keita Saku, Takafumi Sakamoto, Kazuo Sakamoto, Takuya Akashi, Masataka Ikeda, Tomomi Ide, Takuya Kishi, Hiroyuki Tsutsui, Kenji Sunagawa
Left ventricular assist device (LVAD) saves lives in patients with severe left ventricular (LV) failure. However, predicting how much LVAD boosts total cardiac output (CO) remains difficult. This study aimed to develop a framework to quantitatively predict the impact of LVAD on hemodynamics. We adopted the circulatory equilibrium framework and incorporated LVAD into the integrated CO curve to derive the circulatory equilibrium. In anesthetized dogs, we ligated left coronary arteries to create LV failure and inserted a centrifugal pump as LVAD...
October 28, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27787388/hydrocephalus-secondary-to-chemotherapy-in-a-case-of-prenatally-diagnosed-giant-immature-grade-3-sacrococcygeal-teratoma-a-case-report-and-literature-review
#19
Ioan Sarbu, Demetra Socolov, Razvan Socolov, Ingrith Miron, Mioara Trandafirescu, Smaranda Diaconescu, Carmen Iulia Ciongradi
INTRODUCTION: Sacrococcygeal teratoma (SCT) is a rare tumor in the general population, arising from multipotent stem cells. Whereas most of the cases diagnosed postnatally have good prognosis, the rate of mortality and morbidities associated with prenatally diagnosed SCT remain high, with a reported mortality rate of 30% to 50%. The outcome of fetal SCT can be unpredictable, with some cases with slow growth during fetal life, whereas others grow rapidly, causing multiple complications; also, some of these tumor will develop triggering fetal (preterm delivery, high-output cardiac failure, hydrops fetalis, intrauterine death) or maternal complications (distocia, placentomegaly, maternal mirror syndrome-preeclampsia)...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27766613/carotid-doppler-flowmetry-correlates-poorly-with-thermodilution-cardiac-output-following-cardiac-surgery
#20
C Roehrig, M Govier, J Robinson, A Aneman
BACKGROUND: It remains unclear whether measuring carotid arterial flow by the time velocity integral using vascular Doppler ultrasound can be used to monitor cardiac output and volume responsiveness. METHODS: The carotid Doppler flow (time velocity integral and peak flow velocity variation) was assessed in triplicate by an intensivist with formal vascular ultrasound training. Thirty-three patients admitted following coronary by-pass surgery were studied before and after a passive leg-raising manoeuvre to investigate volume responsiveness (more than 10% increase in cardiac output) along with indices of arterial load measuring cardiac output by thermodilution...
October 21, 2016: Acta Anaesthesiologica Scandinavica
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