Afterload - Study guides, Class notes & Summaries

Coronary artery perfusion is dependent upon: A. diastolic pressure B. systolic pressure C. afterload D. systemic vascular resistance (SVR) Correct Answers A. diastolic pressure Diastolic pressure in the aortic root is higher than left ventricular end-diastolic pressure (LVEDP), the pressure exerted on the ventricular muscle at the end of diastole when the ventricle is full. This enables blood to flow from a higher pressure through open arteries to a lower pressure, a pressure gradient known...

Test Bank - Applied Pathophysiology for the Advanced Practice Nurse 1ST Edition Lucie By Dlugasch, Lachel Story | Complete 2023/2024. A 50-year-old man is having an acute myocardial infarction and will be administered recombinant tissue plasminogen activator (t-PA). The medication activates plasminogen in order to: A) decrease platelet adhesion. B) increase clotting time. C) promote fibrinolysis. D) promote coronary vasodilation. Ans: C Complexity: Easy Ahead: Hematopoietic System Subj...

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...

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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) -...

What to do first if patient has chest pain. - Answer- Rest! ECG changes in an acute MI - Answer- ST elevation in 2 or more contiguous leads. Ischemia d/t full thickness loss of muscle. EMERGENCY. Inferior leads - Answer- II, III, aVF. RCA occlusion. Septal leads - Answer- V1 & V2. Anterior leads - Answer- V1 - V4. LAD lesion. Lateral leads - Answer- V5, V6, I, and aVL. Circumflex lesion. Cardiac enzymes - Answer- Troponins, CK-MB, and CK Changes in CK - Answer- Rise: 3-6 hou...

critical care/flight paramedic exam 2023 babinski reflex ANS-extension and spreading of toes when bottom of foot is stroked. sign of nervous system lesion battles sign ANS-bruise behind ear, basilar skull fracture becks triad ANS-jvd, muffled heart tones, hypotension. from cardiac tamponade brudzinski sign ANS-flexion of the neck results in flexion of the hip. meningitis coopernails sign ANS-ecchymosis on perineum, labia, scrotum. sign of pelvis fracture cullens sign ANS-bruising...

AdvAnced HeAltH AssessmentcArdiovAsculAr - AdvAnced HeAltH Assessment midterm eXAm neWest ActuAl eXAm comPlete Questions And correct detAiled AnsWers Afterload - CORRECT ANSWER Degree of vascular resistance to ventricular contraction. Depends on (arteries walls tone)+volume of blood that aorta already had AHA "ideal CV health" is when - CORRECT ANSWER 7 health behaviors ( body mass, -smoker, ising, hy diet) and 5. total cholesterol <200, 6. BP <120/80, 7. fasting glucose &...

The nurse is caring for a patient who is receiving IV furosemide and morphine for the treatment of acute decompensated heart failure (ADHF) with severe orthopnea. Which clinical finding is the best indicator that the treatment has been effective? a. Weight loss of 2 lb in 24 hours b. Hourly urine output greater than 60 mL c. Reduced dyspnea with the head of bed at 30 degrees d. Patient denies experiencing chest pain or chest pressure - Reduced dyspnea with the head of bed at 30 degrees W...

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...