A nurse is providing postoperative care to a client who lost 800 mL of blood during surgery. The client's blood pressure has been steadily decreasing over the past 2 hr. Which of the following categories of shock should the nurse recognize is occurring?
Hypovolemic shock
Septic shock
Obstructive shock
Neurogenic shock
The Correct Answer is A
A. Hypovolemic shock: Hypovolemic shock occurs due to a significant decrease in circulating blood volume, leading to inadequate tissue perfusion. Blood loss, such as that experienced by the client in the scenario, is a common cause of hypovolemic shock. The decrease in blood pressure observed over time is consistent with the compensatory mechanisms of hypovolemic shock, where the body attempts to maintain perfusion to vital organs despite decreased blood volume.
B. Septic shock: Septic shock results from a systemic inflammatory response to infection, leading to vasodilation, increased capillary permeability, and maldistribution of blood flow. While infection can lead to hypovolemia in some cases, the scenario does not provide evidence of infection or systemic inflammatory response as the cause of shock.
C. Obstructive shock: Obstructive shock occurs when there is obstruction to blood flow within the cardiovascular system, such as in cases of pulmonary embolism, cardiac tamponade, or tension pneumothorax. There is no evidence in the scenario to suggest an obstruction to blood flow as the cause of the client's shock.
D. Neurogenic shock: Neurogenic shock results from loss of sympathetic tone leading to vasodilation and relative hypovolemia. It is often associated with spinal cord injury or severe head injury. While neurogenic shock can lead to hypotension, the scenario does not indicate any neurological injury or insult as the cause of the client's shock.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["D","E"]
Explanation
A. Diabetes mellitus: An inverse association between diabetes mellitus (DM) and abdominal aortic aneurysm (AAA) risk hasbeen reported. Apart from a lower AAA prevalence among patients with vsthose without DM, there isdata showing that DM may exert a protective role on aneurysmal growth in patients with small AAAs, thus decreasing the risk of rupture. As atherosclerosis has almost the same risk factors as aneurysms, the decreased AAA prevalence in patients with DM may indicate that atherosclerosis is an associated feature and not a cause of the aneurysms.
B. Total cholesterol 170 mg/dL (less than 200 mg/dL): While elevated total cholesterol is a risk factor for cardiovascular disease, it is not specifically listed as a risk factor for abdominal aortic aneurysm (AAA). However, dyslipidemia, including elevated total cholesterol levels, can contribute to the development of atherosclerosis, which is a risk factor for AAA.
C. HDL cholesterol 65 mg/dL (male greater than 45 mg/dL; female greater than 55 mg/dL): High-density lipoprotein (HDL) cholesterol levels greater than 65 mg/dL are not listed as a risk factor for abdominal aortic aneurysm (AAA). However, low levels of HDL cholesterol are associated with an increased risk of cardiovascular disease, which may indirectly contribute to the development of AAA through the promotion of atherosclerosis.
D. Smoking cigarettes: Smoking cigarettes is a significant modifiable risk factor for abdominal aortic aneurysm (AAA). Smoking damages the walls of blood vessels, promotes inflammation, and accelerates the development of atherosclerosis, increasing the risk of AAA formation and rupture.
E. Family history of aneurysm: A family history of aneurysm, particularly abdominal aortic aneurysm (AAA), is a risk factor for developing AAA. Genetic factors can predispose individuals to the development of aneurysms, and a positive family history increases the likelihood of AAA occurrence.
Correct Answer is B
Explanation
A. "Note if you see any flashing bright lights on the grid." Flashing lights are not typically associated with macular degeneration. This symptom is more commonly associated with conditions like retinal detachment or migraine headaches.
B. "Check to see if the lines on the grid are blurry or distorted." This statement is correct. The Amsler grid is used to detect changes in central vision, which are common in macular degeneration. Patients with macular degeneration may perceive wavy or distorted lines instead of straight lines when looking at the grid, indicating central vision loss.
C. "Monitor for the lines on the grid to change in color or brightness." Changes in color or brightness of the lines on the grid are not typical features of macular degeneration. This statement does not accurately reflect the purpose of using an Amsler grid for macular degeneration.
D. "Watch for floating dark spots on the grid." Floating dark spots (floaters) are not typically associated with macular degeneration. Floaters are more commonly associated with conditions like posterior vitreous detachment or retinal detachment.
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