Med Surg Exam 2- study Guide -2024 Hypertension, CAD/Atherosclerosis, Angina, Myocardial Infarction, & Reperfusion

Med Surg Exam 2- study Guide -2024 Hypertension, CAD/Atherosclerosis, Angina, Myocardial Infarction, & Reperfusion Blood Pressure “force exerted by the blood against the walls of the blood vessel” Blood Pressure Regulation Sympathetic Nervous System – Activation of SNS for low bp = increased HR, cardiac contractility, vasoconstriction, release of renin – Receptors = alpha 1 & 2, Beta 1 & 2, dopamine – Baroreceptors – located in carotids and aortic arch, sense changes in BP and send info to the brainstem- related to activities – High BP= inhibition of SNS – Low BP= Stimulation of SNS Vascular endothelium – produces vasoactive substances to maintain arterial tone (vasoconstriction/vasodilation) Renal system – control sodium excretion and ECF volume – RAAS system (Renin Angiotensin Aldosterone System) – Increase BP by vasoconstricting and releasing aldosterone Endocrine – Adrenal medulla releases Epi and NE – Beta 2 stimulation and Alpha 1 stimulation