TY - CHAP M1 - Book, Section TI - Blood Pressures and Resistances A1 - Brown, Gabrielle A1 - Desvarieux, Tricia A2 - Freeman, Brian S. A2 - Berger, Jeffrey S. PY - 2014 T2 - Anesthesiology Core Review: Part One Basic Exam AB - Blood pressure is the force exerted by blood against vessel walls. More specifically, blood pressure refers to the pressure of blood within the circulatory system’s arteries. Arterial blood pressure is determined by the cardiac cycle’s systole and diastole. During ventricular contraction, or systole, blood exits the heart’s right and left ventricle into the pulmonary artery and aorta, causing pressures in these arteries to rise steeply. Systolic blood pressure (SBP) is the maximum pressure achieved during ventricular contraction. When ventricles relax during diastole, they fill with blood in preparation for the next contraction, and arterial blood pressure drops. Diastolic blood pressure (DBP) is the blood pressure following contraction of the heart, during heart chamber refilling, and represents the lowest arterial pressure prior to the next contraction cycle. The difference between systolic and diastolic pressures is the pulse pressure. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=1102569454 ER -