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 B
Explanation
A. Moist mucous membranes: Moist mucous membranes are typically a sign of good hydration and are not usually associated with end-of-life stages. In fact, patients nearing the end of life often experience dryness of the mouth and mucous membranes due to decreased fluid intake and certain medications. This dryness can lead to discomfort and difficulties in swallowing or speaking, which is why oral care is an important part of end-of-life care.
B. Irregular respirations: This is correct. As the body’s systems start to shut down in the final stages of life, irregular respirations, including periods of rapid breathing and pauses (Cheyne-Stokes respirations), can be a common symptom. This happens because the body can no longer effectively remove carbon dioxide, and the automatic process of breathing becomes less coordinated. This can be distressing to witness, but it’s usually not uncomfortable for the patient.
C. Tachycardia: While some patients may experience changes in heart rate, tachycardia is not typically a consistent finding in patients at the end of life. As the body weakens, the heart has to work harder to pump blood, which can sometimes lead to a faster heart rate. However, as the end of life approaches, the heart rate often slows down, and blood pressure decreases.
D. Hypertension: Hypertension, or high blood pressure, is not typically a symptom associated with end-of-life care. In the final stages of life, the body’s systems begin to slow down, and blood pressure often decreases. This is due to a combination of factors, including a slower heart rate and a decrease in the body’s ability to regulate blood pressure. It’s also worth noting that pain, anxiety, and certain medications can temporarily increase blood pressure, even in the end-of-life stages.
Correct Answer is B
Explanation
A. Root cause analysis:
Root cause analysis is a method used to identify the underlying causes of adverse events or errors. While it is important for quality improvement and risk management, it does not specifically involve using research and scientific data to guide clinical decision-making in client care.
B. Evidence-based practice:
Evidence-based practice (EBP) involves integrating the best available evidence from research studies with clinical expertise and patient preferences to guide decision-making in client care. By utilizing research and scientific data, nurses can identify effective interventions and strategies to improve client outcomes.
C. Benchmarking:
Benchmarking involves comparing performance metrics or outcomes against standards or best practices. While benchmarking can inform quality improvement efforts, it does not directly involve using research and scientific data to guide clinical decision-making.
D. Standardization:
Standardization involves implementing consistent processes or protocols to improve quality and safety. While standardization is important for ensuring consistency in care delivery, it does not necessarily rely on research and scientific data to inform clinical decision-making as evidence-based practice does.
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