NUR 425 Complex Care Exam 1 Blueprint 2023/2024

NUR 425 Complex Care Exam 1 Blueprint 2023/2024. Understand the significance of the following Not required to memorize actual normal ranges • Systemic Vascular Resistance (SVR) o Resistance to left ventricle • Pulmonary Vascular Resistance (PVR) o Resistance to right ventricle • Wedge Pressure (PAOP/PAWP) o Estimates the left atrial pressure by “looking through” the lungs • Stroke Volume o Amount of blood ejected from left ventricle o Measure of CONTRACTILITY o Volume measured in mL • Ejection fraction o Fraction (percentage) of blood ejected from the left ventricle with each beat o Measure of CONTRACTILITY o Left ventricle must squeeze hard enough to get blood out • Serum Lactate o When pt is unable to perfuse oxygen, aerobic metabolism converts to anaerobic metabolism and lactate is released. o Elevated serum lactate indicates significant hypoperfusion • PTT/aPTT o Partial Thromboplastin Time o May be prolonged with DIC o Measures integrity of the intrinsic system • D-Dimer o Detects protein that results from clot breakdown o Indicated that fibrin has been formed and degraded (fibrinolysis) o Often markedly elevated with DIC o Unlikely DIC if this test is normal • Fibrinogen o Clotting factor that typically is low with DIC • The concept of a therapeutic PTT and INR o PTT: o INR: While taking Warfarin, it is typically expected that INR (standardized measurement of PT) is prolonged. ▪ 2-3 seconds You DO NOT need to memorize the coagulation cascade (eg. which factors activate which factors), just a general understanding of its purpose and what happens if there are more or less clotting factors, if it is slowed down/sped up, and what triggers the coagulation cascade. The following medications could be tested on this exam. You should know the medication’s indications, side effects, and nursing considerations when administering these: • Warfarin (Coumadin) - Anticoagulant o Interferes with synthesis of clotting factors that use Vitamin K to be synthesized o Will not affect factors already floating around, will prevent future factors from being made o Indications: ▪ Venous Thrombosis ▪ Pulmonary Embolism ▪ A-fib ▪ Myocardial Infarction o Nursing Considerations: ▪ Can cause bleeding ▪ Aspirin and NSAIDs increase risk of bleeding ▪ Therapeutic levels: PT 15.5-35 seconds, INR 2-3 ▪ Avoid alcohol ▪ Avoid foods that have a lot of Vitamin K: green vegetables, grains, mayo, canola and soybean oil ▪ Vitamin K is antidote o Contraindications: ▪ Vitamin K deficiency ▪ Liver disease ▪ Alcoholism ▪ Pregnancy • Aspirin – Non opioid analgesic, antiplatelet o Platelet aggregation leading to a decrease in ischemic diseases o COX inhibitor o Irreversible 7-10 days o Indications: ▪ Ischemic strokes and MI prophylaxis ▪ Angina o Nursing Considerations: ▪ Increases risk for bleeding with warfarin, heparin, clopidogrel