NURS 245 Lecture Notes - Lecture 23: Cardiogenic Shock, Vascular Permeability, Pericardium
Document Summary
Shock-lack of oxygen delivery (vasoconstriction causes compensation and causes increase in map but periphery oxygen delivery decreases) Hypovolemic: don"t have enough fluid (can be blood or regular fluids) Stages a) compensatory: see chart-will promote them to retain fluids and increase map (1) baroreceptor reflex-vasoconstrict (2) (3) (4) Fluid shift from interstitium-hpc decreased: pulling water out of interstitium which decreases the ratio of. Rbcs to water 30-60 mins later hematocrit will be decreased because body compensates by pulling water from interstitium into capillaries. (5) Erythropoietin-make red blood cells (decreased blood flow to kidneys increased erythropoietin increased. Decompensatory-point at which body can"t compensate: if blood vessels won"t vasoconstrict you can"t re-establish. Blood vessel damage-^^ increased capillary permeability-decreases blood volume and sv (3) irreversible: irreversible vasodilation-decreases tpr. Causes-mis, arrhythmias, cardiac tamponade (blood accumulates in pericardial sac) Distributive shock-blood pools and doesn"t return to heart: fluid is distributed unequally. 1. a) loss of vascular tone b) result (1)
