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 C
Explanation
Choice A reason: While disturbed body image is a concern, it is not the highest priority for a patient undergoing a bone marrow transplant.
Choice B reason: Anxiety is important to address but does not take precedence over physical health concerns in the immediate post-transplant period.
Choice C reason: Ineffective protection is the highest priority because patients undergoing bone marrow transplants have compromised immune systems and are at high risk for infection.
Choice D reason: Imbalanced nutrition is a concern but is secondary to the risk of infection in the immediate care of a patient post bone marrow transplant.
Correct Answer is D
Explanation
Choice A reason: Lethargy implies a state of sluggishness, drowsiness, or fatigue, not the inability to respond to stimuli.
Choice B reason: Stupor refers to a state of near-unconsciousness or insensibility, but the patient may respond to vigorous stimulation.
Choice C reason: Obtundation describes a state of consciousness characterized by a reduced alertness and a slow response to stimuli, but not complete unresponsiveness.
Choice D reason: Comatose is the correct term for a state of deep unconsciousness in which a patient cannot be aroused, fitting the description of the patient's condition.
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