Continuous Monitoring of Cardiac Output during Hemodialysis

2015 ◽  
pp. 112-114
Author(s):  
O. Bastien ◽  
S. Filley ◽  
S. Paulus ◽  
V. Piriou ◽  
S. Estanove
Keyword(s):  
Cardiac Output ◽  
Continuous Monitoring

scholarly journals In-Silico Evaluation of Anthropomorphic Measurement Variations on Electrical Cardiometry in Neonates

Children ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 936
Author(s):  
David B. Healy ◽  
Eugene M. Dempsey ◽  
John M. O’Toole ◽  
Christoph E. Schwarz
Keyword(s):  
Cardiac Output ◽  
Stroke Volume ◽  
In Silico ◽  
Continuous Monitoring ◽  
Assessment Tools ◽  
Physical Measurement ◽  
Electrical Cardiometry ◽  
Non Invasive ◽  
Weight Measurement ◽  
Proportional Change

Non-invasive cardiac output methods such as Electrical Cardiometry (EC) are relatively novel assessment tools for neonates and they enable continuous monitoring of stroke volume (SV). An in-silico comparison of differences in EC-derived SV in relation to preset length and weight was performed. EC (ICON, Osypka Medical) was simulated using the “demo” mode for various combinations of length and weight representative of term and preterm infants. One-centimetre length error resulted in a SV-change of 1.8–3.6% (preterm) or 1.6–2.0% (term) throughout the tested weight ranges. One-hundred gram error in weight measurement resulted in a SV-change of 5.0–7.1% (preterm) or 1.5–1.8% (term) throughout the tested length ranges. Algorithms to calculate EC-derived SV incorporate anthropomorphic measurements. Therefore, inaccuracy in physical measurement can impact absolute EC measurements. This should be considered in the interpretation of previous findings and the design of future clinical studies of EC-derived cardiac parameters in neonates, particularly in the preterm cohorts where a proportional change was noted to be greatest.

Continuous monitoring of cardiac output postoperatively using an implantable doppler probe

1986 ◽  
Vol 20 (2) ◽  
pp. 145-149 ◽  
Author(s):  
J. L. Svennevig ◽  
A. Grip ◽  
H. Lindberg ◽  
O. Geiran ◽  
K. V. Hall
Keyword(s):  
Cardiac Output ◽  
Continuous Monitoring ◽  
Doppler Probe

Central venous O2 saturation and rate of arterial desaturation during obstructive apnea

1989 ◽  
Vol 66 (3) ◽  
pp. 1477-1485 ◽  
Author(s):  
E. C. Fletcher ◽  
R. Kass ◽  
J. I. Thornby ◽  
J. Rosborough ◽  
T. Miller
Keyword(s):  
Cardiac Output ◽  
Continuous Monitoring ◽  
Base Line ◽  
Central Venous ◽  
Cuffed Endotracheal Tube ◽  
The Mean ◽  
Arterial O2 Saturation ◽  
Spontaneously Breathing ◽  
Venous O2 Saturation ◽  
Mixed Venous

We examined the rate of fall of arterial O2 saturation (dSao2/dt) after apnea onset in four spontaneously breathing adult male baboons. We postulated that a lower mixed venous O2 saturation (Svo2) would steepen dSao2/dt by more rapid depletion of alveolar O2. Single isolated (NREP) and five or more sequential repetitive apneas (REP) were created by clamping an indwelling cuffed endotracheal tube at end expiration. Fiberoptic catheters were used for continuous monitoring of Sao2, Svo2, and cardiac output. The mean dSao2/dt for all duration NREP apneas was 0.60%/s. Mean dSao2/dt increased above base line for each consecutive REP apnea and was higher in 60 s than in 45 and 30 s REP apnea series. The increase in dSao2/dt corresponded closely with the fall in preapneic Svo2. Preapneic arterial O2 content fell during successive REP apneas but the maximal decrement from base line (1.3 ml/dl) was much less than the maximal decrement in preapneic mixed venous O2 content of 5.1 ml/dl. Preapneic cardiac output for NREP apneas and nadir cardiac output for REP apneas remained constant. Nadir cardiac output for NREP apneas showed higher values for longer duration apneas. We concluded that dSao2/dt is inversely related to preapneic Svo2.

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