What is afterload Study guides, Class notes & Summaries

minimum urine output for adult 0.5mL/kg/hr ADH (antidiuretic hormone) - water retainer - vasoconstrictor (also called Vasopressin) - produced by hypothalamus - store and released from posterior pituitary ADH pathway - hypothalamus senses low blood volumed and increased serum osmolality - signal pituitary to release ADH - ADH causes kidney to retain water - water retention increases blood volume and decreases serum osmolality ANP (atrial natriuretic peptide) -...

how does inflammatory process contribute to reperfussion injury? Correct Answer: as oxygen is reintroduced it comes in contact with damaged proteins triggering inflammatory response how does oxidative process contribute to RI? Correct Answer: RAS causes impairment of cell membrane and pro-apotptoic cells release. making cell unstable what is primary Hypertension? Correct Answer: Essential or idiopathic, elevated BP without an identified cause, accounts for 90 - 95% of all cases of hyper...

Nitroprusside purpose - Answer- decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - Answer- contractility Dopamine at a low-end dose "renal dose" - Answer- 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - Answer- 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - Answer- greater than 10mcg/kg/min vasoconstriction and increases BP Dopamine and Levophed inf...

Healthstream Exam Questions and Answers | Latest Update 2023/2024 (Graded A+). The nurse assesses a patient's chest tube drainage 2 hours following thoracic surgery. The total drainage in the system is 200 mL. The nurse knows that: this is an excessive amount of drainage The patient being admitted requires CRRT therapy. The nurse assigned to admit the patient has not been educated on this therapy. The charge nurse adjusts the assignment so that a nurse with 3 years experience in CRRT ther...

What is the formula for calculating cardiac output? CORRECT ANSWERS: CO= HR x SV What is stroke volume related to? CORRECT ANSWERS: preload Preload is most impacted by..... CORRECT ANSWERS: Increased filling volumes A patient with chronic untreated hypertension would demonstrate.... CORRECT ANSWERS: Increased afterload Vascular resistance/pressure is most influenced by.... CORRECT ANSWERS: Radius of the vessel The formula for BP is.... CORRECT ANSWERS: BP = CO x SVR What ...

Patho Hesi Review Questions and Answers Already Passed A dissecting aneurysm is dangerous due to the fact that there is a tear in which layer of the vessel wall? Inner, middle, outer. medial layer- allows blood to seep into the middle layer A Pulmonary embolus can cause what kind of shock? obstructive shock A patient has type II diabetes, what symptoms should he expect? Select all that apply A. Extreme Hunger B. Excessive thirst C. Polyuria D. Salt craving E. Quick accumulation of fat A, ...

Healthstream Test 2023 Exam / 108 Complete Questions and Correct Answers. A patient assessment reveals distended neck veins, pulsus paradoxus, and decreased systolic pressure. This assessment is most consistent with: - ANSWER cardiac tamponade. The nurse is caring for a patient with severe sepsis and third-degree heart block. The patient is hypotensive. The treatment for this life-threatening rhythm change includes: - ANSWER transcutaneous pacing. A patient is admitted to the ICU with sus...

NUR 652 Final Exam Study Questions with Answers All Correct 2023. Why are nitrate-free periods every 24 hours necessary for the patient on nitroglycerin therapy? To inhibit the development of tolerance What does a low level of thyroid-stimulating hormone indicate? Hyperthroidism What would be the best option to treat a newly diagnosed patient with a low TSH level with? Propanolol (Inderal) Spironoaldactone (Aldactone) has what mechanism of action (MOA)? Aldosterone antagonist Heparin exer...

What is the most important sign in a critically ill pt? Why? - ANSWER-Tachypnea Indicates metabolic acidosis w/ respiratory alkalosis compensation A pt misses dialysis for a few days and comes in with fluid overload. He's tachycardic and tachypneic. On physical exam, you find JVD, pulsus paradoxus (20 mmHg drop during inspiration), and HoTN (80/40) with distant, muffled heart sounds. Lungs are clear to auscultation. What is the dx? - ANSWER-Cardiac tamponade; obstructive shock If a pt ...

What are the functions of the Cardiovascular System? correct answers - Oxygen delivery & removal of CO2 - Provides cells with Nutrients - Remove waste product from cell metabolism - Protects body against disease & infection right side of heart correct answers deoxygenated blood pumps blood to the lungs left side of heart correct answers oxygenated blood pumps blood to body What is Preload? correct answers Volume of blood in ventricles at end of diastole Preload is increas...