Which factors may contribute to hypertension? (Select All that Apply.)
Decreased stimulation of the sympathetic nervous system (SNS).
Decreased elasticity of blood vessels.
Increased peripheral vascular resistance (PVR).
Decreased fluid volume.
Increased blood viscosity.
Correct Answer : B,C,E
(A) Decreased stimulation of the sympathetic nervous system (SNS): The sympathetic nervous system (SNS) plays a key role in regulating blood pressure. When the SNS is stimulated, it causes vasoconstriction, or narrowing of the blood vessels, which increases blood pressure. Therefore, decreased stimulation of the SNS would typically lead to vasodilation, or widening of the blood vessels, which would lower blood pressure, not increase it.
(B) Decreased elasticity of blood vessels: As people age, their blood vessels can lose elasticity, which can lead to hypertension. When blood vessels are elastic, they can easily expand and contract with each heartbeat, maintaining a healthy blood pressure. But when they become stiff or rigid, they can’t expand as easily, causing the pressure inside to increase.
(c) Increased peripheral vascular resistance (PVR): Peripheral vascular resistance is the resistance that blood must overcome to flow through the blood vessels. The more resistance, the harder the heart has to work to pump blood through the body, which can lead to increased blood pressure. Factors that can increase PVR include vasoconstriction, or narrowing of the blood vessels, and increased blood viscosity, or thickness.
(D) Decreased fluid volume: Decreased fluid volume, or hypovolemia, would typically lead to a decrease in blood pressure, not an increase. This is because blood pressure is directly related to the volume of blood in the blood vessels. When there’s less blood, the pressure inside the blood vessels is usually lower.
(E) Increased blood viscosity: Blood viscosity refers to the thickness of the blood. When blood is thicker, it’s harder for it to flow through the blood vessels, which increases the resistance to blood flow, leading to increased blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["50"]
Explanation
Let's calculate the rate for the IV infusion.
We are given:
Volume to be infused: 400 mL
Infusion time: 8 hours
Drop factor: 60 gtt/mL
We need to find the rate in gtt/min.
Here's how we can do it:
Convert hours to minutes: Since the rate is required in minutes, we need to convert the infusion time from hours to minutes. There are 60 minutes in 1 hour. Therefore, total infusion time in minutes = 8 hours x 60 minutes/hour = 480 minutes
Calculate total number of drips: We can find the total number of drips to be delivered by multiplying the volume (in mL) by the drop factor (gtt/mL). Total drips = Volume (mL) x Drop factor (gtt/mL) = 400 mL x 60 gtt/mL = 24000 gtt
Calculate drip rate (gtt/min): Finally, we can calculate the rate by dividing the total number of drips by the total infusion time in minutes. Rate (gtt/min) = Total drips (gtt) / Total time (minutes) = 24000 gtt / 480 minutes = 50 gtt/min
Therefore, the nurse should set the manual IV infusion to deliver approximately 50 gtt/min.
Correct Answer is A
Explanation
Answer: A. An adolescent who asks to stay in the hospital because he likes the room
Rationale:
A) An adolescent who asks to stay in the hospital because he likes the room: This finding may indicate that the adolescent is experiencing abuse or neglect at home. A desire to remain in the hospital could suggest that the child views it as a safe space compared to their home environment, warranting further assessment for possible abuse.
B) A toddler who has multiple bruises on the shins of both legs and his parents report that he is clumsy: Bruising on the shins is common in toddlers due to normal exploratory behavior and frequent falls. The parent's explanation aligns with developmental norms, making this finding less indicative of abuse.
C) A school-age child who cries when the nurse is giving him an injection: Crying during injections is a typical reaction for school-age children and does not suggest abuse. Emotional responses to medical procedures are age-appropriate and expected.
D) A preschooler who has a BMI indicating obesity: While obesity in children may raise concerns about diet and lifestyle, it is not inherently indicative of abuse. Further evaluation may be needed for nutritional and health interventions but does not typically suggest maltreatment.
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