Chapter: Clinical Cases in Anesthesia : Shock

What are the determinants of blood pressure?

Mean arterial pressure (MAP) is determined by the cardiac output (CO) and the systemic vascular resistance (SVR).

What are the determinants of blood pressure?

Mean arterial pressure (MAP) is determined by the cardiac output (CO) and the systemic vascular resistance (SVR) as follows:

_MAP ₌ [ CO × SVR] / 80

CO is the product of the stroke volume (SV) and the heart rate (HR) and depends on preload (the end-diastolic myocardial fiber stretch), contractility (the forcefulness of the contraction), and afterload (the tension developed by the fibers during the contraction). A reduction in either cardiac output or systemic vascular resistance without a counteractive change in the other will tend to decrease the blood pressure.

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Clinical Cases in Anesthesia : Shock : What are the determinants of blood pressure? |