Which of the following affect ventricular afterload?
I.Volume and viscosity of blood ejected
II.Peripheral vascular resistance
III.Cross-sectional area of vascular space into which blood is ejected

Question

Quizplus · Accepted Answer

Ventricular afterload is influenced by several factors, including the peripheral vascular resistance (II), which is the resistance the heart must overcome to eject blood, and the cross-sectional area of the vascular space (III), as a smaller area increases resistance and thus afterload. While the volume and viscosity of blood (I) primarily affect preload and the work required for ejection, they can indirectly influence afterload through changes in blood flow dynamics and resistance. Therefore, all three options (I, II, and III) are correct in affecting ventricular afterload.

Which of the Following Affect Ventricular Afterload