Fluctuations in cardiac stroke volume during rowing

2020 ◽  
Author(s):  
Casper Sejersen ◽  
Mads Fischer ◽  
João D. Mattos ◽  
Stefanos Volianitis ◽  
Niels H. Secher
Keyword(s):  
Stroke Volume ◽  
Cardiac Stroke Volume

Parametric EIT for monitoring cardiac stroke volume

2006 ◽  
Vol 27 (5) ◽  
pp. S139-S146 ◽  
Author(s):  
S Zlochiver ◽  
D Freimark ◽  
M Arad ◽  
A Adunsky ◽  
S Abboud
Keyword(s):  
Stroke Volume ◽  
Cardiac Stroke Volume

Short-term emersion affects cardiac function and regional haemolymph distribution in the crab Cancer magister

1996 ◽  
Vol 199 (3) ◽  
pp. 569-578
Author(s):  
C Airriess ◽  
B Mcmahon
Keyword(s):  
Stroke Volume ◽  
Cardiac Function ◽  
Large Scale ◽  
Time Course ◽  
Beat Frequency ◽  
Heart Beat ◽  
Experimental Chamber ◽  
Cancer Magister ◽  
Flow Through ◽  
Cardiac Stroke Volume

Changes in cardiac function and arterial haemolymph flow associated with 6 h of emersion were investigated in the crab Cancer magister using an ultrasonic flowmeter. This species is usually found sublittorally but, owing to the large-scale horizontal water movements associated with extreme tides, C. magister may occasionally become stranded on the beach. Laboratory experiments were designed such that the emersion period was typical of those that might be experienced by this crab in its natural environment. The frequency of the heart beat began to decline sharply almost immediately after the start of the experimental emersion period. Cardiac stroke volume fell more gradually. The combined reduction in these two variables led to a maximum decrease in cardiac output of more than 70 % from the control rate. Haemolymph flow through all the arteries originating at the heart, with the exception of the anterior aorta, also declined markedly during emersion. As the water level in the experimental chamber fell below the inhalant branchial openings, a stereotypical, dramatic increase in haemolymph flow through the anterior aorta began and this continued for the duration of the emersion period. The rapid time course of the decline in heart-beat frequency and the increase in haemolymph flow through the anterior aorta suggest a neural mechanism responding to the absence of ventilatory water in the branchial chambers. These responses may be adaptations, respectively, to conserve energy by reducing the minute volume of haemolymph pumped by the heart and to protect the supply of haemolymph to cephalic elements of the central nervous system. The decline in cardiac stroke volume, which occurs more slowly over the emersion period, may be a passive result of the failure to supply sufficient O2 to meet the aerobic demands of the cardiac ganglion.

scholarly journals Incorporating pulse wave velocity into model-based pulse contour analysis method for estimation of cardiac stroke volume

2020 ◽  
Vol 195 ◽  
pp. 105553
Author(s):  
Rachel Smith ◽  
Joel Balmer ◽  
Christopher G. Pretty ◽  
Tashana Mehta-Wilson ◽  
Thomas Desaive ◽  
...  
Keyword(s):  
Stroke Volume ◽  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Pulse Contour Analysis ◽  
Pulse Contour ◽  
Analysis Method ◽  
Contour Analysis ◽  
Model Based ◽  
Cardiac Stroke Volume

Reproducibility of cardiac stroke volume estimated by doppler echocardiography

1987 ◽  
Vol 59 (9) ◽  
pp. 975-978 ◽  
Author(s):  
Halfdan Ihlen ◽  
Knut Endresen ◽  
Yngvar Myreng ◽  
Erik Myhre
Keyword(s):  
Stroke Volume ◽  
Doppler Echocardiography ◽  
Cardiac Stroke Volume
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