(523) Ventricular-Arterial Coupling

1. What factors are used to calculate ventricular arterial coupling?
A. Arterial blood pressure and peripheral vascular resistance
B. Arterial and ventricular elastance
C. Heart rate and stroke volume
D. Preload and afterload
2. What is dynamic arterial elastance
A. The ratio between arterial pulse pressure and stroke volume variation during respiration
B. The ratio between arterial and ventricular elastance
C. The ratio between systolic and diastolic arterial blood pressure during respiration
D. The percentage variation in the plethysmograph calculated from the perfusion index (PI)
3. How can ventricular arterial coupling be determined?
A. From an arterial pressure waveform
B. From systemic arterial pressure and flow wave reflections
C. From a ventricular pressure-volume loop
D. From measures of ventricular preload and afterload
4. What factor influences ventricular arterial coupling?
A. Preload
B. Afterload
C. Cardiac contractility
D. All the above
5. What effect does anesthesia have on ventricular arterial coupling?
A. No change or worsened
B. Worsened
C. Worsens then improves
D. No change
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