What is the main hemodynamic parameter that measures preload?
Systolic Blood Pressure.
Mean Arterial Blood Pressure.
Central Venous Pressure (CVP).
Systemic Vascular Resistance.
The Correct Answer is C
Choice A reason: Systolic Blood Pressure is not a direct measure of preload; it indicates the pressure in the arteries during the contraction of the heart muscles.
Choice B reason: Mean Arterial Blood Pressure is an average blood pressure in an individual during a single cardiac cycle, but it does not specifically measure preload.
Choice C reason: Central Venous Pressure (CVP) is a direct measure of the blood volume returning to the heart and the ability of the heart to pump the blood into the arterial system, making it a key indicator of preload.
Choice D reason: Systemic Vascular Resistance refers to the resistance to blood flow offered by all of the systemic vasculature, excluding the pulmonary vasculature, and is not a measure of preload.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","D"]
Explanation
Choice A reason: Genetics play a significant role in the development of multiple sclerosis (MS). While MS is not directly inherited, certain genetic markers can increase susceptibility. Studies have shown that individuals with a first-degree relative with MS have a higher risk compared to the general population.
Choice B reason: Environmental factors, such as low vitamin D levels, smoking, and possibly viral infections, are believed to contribute to the risk of developing MS. Geographic location, particularly living further from the equator, has also been associated with a higher incidence of MS, which may be related to sun exposure and vitamin D synthesis.
Choice C reason: While upper respiratory infections can trigger exacerbations in individuals with existing MS, they are not identified as a direct contributing factor to the development of the disease itself.
Choice D reason: MS is considered an autoimmune disorder where the immune system mistakenly attacks the central nervous system. This immune-mediated process targets the myelin sheath, leading to inflammation and characteristic lesions.
Choice E reason: Urinary tract infections are a common complication in individuals with MS due to bladder dysfunction, but they are not a contributing factor to the development of MS.
Correct Answer is B
Explanation
Choice A reason: Inadequate retention of serum sodium is not typically associated with anemia in chronic renal failure.
Choice B reason: Inadequate production of erythropoietin is the correct answer because the kidneys produce erythropoietin, which stimulates the bone marrow to produce red blood cells. In chronic renal failure, the kidneys cannot produce enough erythropoietin, leading to anemia.
Choice C reason: While blood loss in the urine can occur, it is not the primary cause of anemia in chronic renal failure.
Choice D reason: Renal desensitization to Vitamin D affects bone health and calcium levels but is not the primary cause of anemia in chronic renal failure.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today