Continuous stroke volume monitoring by modelling flow from non-invasive measurement of arterial pressure in humans under orthostatic stress

1999 ◽  
Vol 97 (3) ◽  
pp. 291 ◽  
Author(s):  
Mark P.M. HARMS ◽  
Karel H. WESSELING ◽  
Frank POTT ◽  
Morten JENSTRUP ◽  
Jeroen VAN GOUDOEVER ◽  
...  
Keyword(s):  
Arterial Pressure ◽  
Stroke Volume ◽  
Orthostatic Stress ◽  
Non Invasive ◽  
Invasive Measurement

Continuous stroke volume monitoring by modelling flow from non-invasive measurement of arterial pressure in humans under orthostatic stress

1999 ◽  
Vol 97 (3) ◽  
pp. 291-301 ◽  
Author(s):  
Mark P. M. HARMS ◽  
Karel H. WESSELING ◽  
Frank POTT ◽  
Morten JENSTRUP ◽  
Jeroen VAN GOUDOEVER ◽  
...  
Keyword(s):  
Arterial Pressure ◽  
Stroke Volume ◽  
Element Model ◽  
Aortic Flow ◽  
Orthostatic Stress ◽  
Non Invasive ◽  
Head Up Tilt ◽  
The Relationship ◽  
Finger Pressure

The relationship between aortic flow and pressure is described by a three-element model of the arterial input impedance, including continuous correction for variations in the diameter and the compliance of the aorta (Modelflow). We computed the aortic flow from arterial pressure by this model, and evaluated whether, under orthostatic stress, flow may be derived from both an invasive and a non-invasive determination of arterial pressure. In 10 young adults, Modelflow stroke volume (MFSV) was computed from both intra-brachial arterial pressure (IAP) and non-invasive finger pressure (FINAP) measurements. For comparison, a computer-controlled series of four thermodilution estimates (thermodilution-determined stroke volume; TDSV) were averaged for the following positions: supine, standing, head-down tilt at 20 ° (HDT20) and head-up tilt at 30 ° and 70 ° (HUT30 and HUT70 respectively). Data from one subject were discarded due to malfunctioning thermodilution injections. A total of 155 recordings from 160 series were available for comparison. The supine TDSV of 113±13 ml (mean±S.D.) dropped by 40% to 68±14 ml during standing, by 24% to 86±12 ml during HUT30, and by 51% to 55±15 ml during HUT70. During HDT20, TDSV was 114±13 ml. MFSV for IAP underestimated TDSV during HDT20 (-6±6 ml; P < 0.05), but that for FINAP did not (-4±7 ml; not significant). For HUT70 and standing, MFSV for IAP overestimated TDSV by 11±10 ml (HUT70; P < 0.01) and 12±9 ml (standing; P < 0.01). However, the offset of MFSV for FINAP was not significant for either HUT70 (3±8 ml) or standing (3±9 ml). In conclusion, due to orthostasis, changes in the aortic transmural pressure may lead to an offset in MFSV from IAP. However, Modelflow correctly calculated aortic flow from non-invasively determined finger pressure during orthostasis.

Limitations and pitfalls of non-invasive measurement of arterial pressure wave reflections and pulse wave velocity

2009 ◽  
Vol 3 (2) ◽  
pp. 79 ◽  
Author(s):  
Patrick Segers ◽  
Jan Kips ◽  
Bram Trachet ◽  
Abigail Swillens ◽  
Sebastian Vermeersch ◽  
...  
Keyword(s):  
Arterial Pressure ◽  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pressure Wave ◽  
Pulse Wave ◽  
Wave Reflections ◽  
Non Invasive ◽  
Invasive Measurement

NON-INVASIVE MEASUREMENT OF POSTPUMP ARTERIAL PRESSURE

ASAIO Journal ◽  
2003 ◽  
Vol 49 (2) ◽  
pp. 191
Author(s):  
W Kleinekofort ◽  
N Kleiner ◽  
M Kraemer
Keyword(s):  
Arterial Pressure ◽  
Non Invasive ◽  
Invasive Measurement

Non-invasive continuous arterial pressure, heart rate and stroke volume measurements during graded head-up tilt in normal man

1997 ◽  
Vol 7 (2) ◽  
pp. 97-101 ◽  
Author(s):  
L. A. H. Critchley ◽  
F. Conway ◽  
P. J. Anderson ◽  
B. Tomlinson ◽  
J. A. J. H. Critchley
Keyword(s):  
Heart Rate ◽  
Arterial Pressure ◽  
Stroke Volume ◽  
Non Invasive ◽  
Volume Measurements ◽  
Head Up Tilt ◽  
Normal Man

Non-invasive measurement of stroke volume during exercise in heart failure patients

2000 ◽  
Vol 98 (5) ◽  
pp. 545 ◽  
Author(s):  
Pier Giuseppe AGOSTONI ◽  
Karlman WASSERMAN ◽  
Giovanni B. PEREGO* ◽  
Marco GUAZZI* ◽  
Gaia CATTADORI* ◽  
...  
Keyword(s):  
Heart Failure ◽  
Stroke Volume ◽  
Heart Failure Patients ◽  
Non Invasive ◽  
Invasive Measurement

scholarly journals COMPARISON OF INVASIVE AND NON-INVASIVE MEASUREMENT OF CONTINUOUS ARTERIAL PRESSURE USING THE FINAPRES

1991 ◽  
Vol 67 (1) ◽  
pp. 26-35 ◽  
Author(s):  
D.N. STOKES ◽  
T. CLUTTON-BROCK ◽  
C. PATIL ◽  
J.M. THOMPSON ◽  
P. HUTTON
Keyword(s):  
Arterial Pressure ◽  
Non Invasive ◽  
Invasive Measurement
Sign in / Sign up

Export Citation Format

Share Document