Knowledge Tree
Relations (1)
related 3.32 — strongly supporting 9 facts
Heart rate and cardiac output are physiologically linked as cardiac output is defined as the product of heart rate and stroke volume [1], [2]. Furthermore, both variables are consistently measured together as key hemodynamic responses to physiological stressors like hypoxia [3], [4], [5], [6], [7].
Facts (9)
Sources
Sex differences in cardiorespiratory control under hypoxia - Frontiers frontiersin.org 6 facts
claimUnder iso-time hypoxia, physiological responses include increases in heart rate, cardiac output, the low-frequency band of R-R intervals, blood pressure, and vascular conductance, as well as decreases in the high-frequency band of R-R intervals and baroreflex sensitivity.
claimExposure to iso-saturation hypoxia causes increases in heart rate, cardiac output, low-frequency bands of R-R intervals, blood pressure, tidal volume, and ventilation, while causing decreases in baroreflex sensitivity, total power, and the high-frequency band of R-R intervals.
claimUnder iso-time hypoxia, females exhibit higher heart rates, cardiac output, and total vascular conductance, while males exhibit higher tidal volume, ventilation, and low-frequency bands of blood pressure.
claimThe time effect of hypoxia was similar for both male and female groups, increasing heart rate, cardiac output, and total vascular conductance while decreasing mean blood pressure.
procedureIn the study on sex differences in cardiorespiratory control under hypoxia, heart rate, stroke volume, and cardiac output were recorded using a noninvasive trans-thoracic bioimpedance device (PhysioFlow), R-R intervals were recorded via electrocardiogram (ECG Module), and continuous blood pressure was recorded via infrared photoplethysmography (Finometer PRO).
procedureThe experimental protocol for the study on sex differences in cardiorespiratory control under hypoxia involved recording hemodynamic variables (heart rate, stroke volume, cardiac output, blood pressure) and respiratory variables (breathing frequency, tidal volume, minute ventilation, SpO2) after a 20-minute rest period in a sitting position.
Homeostasis: The Underappreciated and Far Too Often ... - Frontiers frontiersin.org 2 facts
claimArterial blood pressure is regulated by corrective changes in cardiac output (stroke volume and heart rate) and resistance to blood flow through blood vessels, which is adjusted by changing vessel diameter, as vessel diameter is inversely related to total peripheral resistance.
formulaCardiac output (CO) is calculated as the product of stroke volume (SV) and heart rate (HR).
A Copernican Approach to Brain Advancement: The Paradigm of ... frontiersin.org 1 fact
claimCardiac output is the product of heart rate and stroke volume, while stroke volume is influenced by blood volume (preload), the pressure against which the heart must contract (afterload), and the strength of each contraction (contractility).