During which phase of the heart cycle is systolic blood pressure recorded?

Systolic blood pressure is recorded during the contraction of the left ventricle. This is a critical phase in the cardiac cycle, known as systole. During this phase, the left ventricle contracts to eject blood into the aorta and into the systemic circulation. As the ventricle contracts, the pressure within it rises, and this peak pressure is what is measured as systolic blood pressure.

Understanding this phase is essential for grasping how blood pressure reflects the heart's performance. It helps in identifying the body's ability to pump blood effectively under peak conditions. Recording systolic pressure provides valuable information about the cardiovascular system's health, particularly regarding the left ventricle's function. Knowing that systolic pressure occurs specifically during the left ventricle's contraction distinguishes it from other phases of the heart cycle, which involve different mechanical activities of the heart.