Which component forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process?

Serotonin.

Platelet factor III.

Von Willebrand factor.

Adenosine diphosphate.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

Serotonin is a neurotransmitter that plays a role in mood regulation, sleep, and other functions in the body. It is not a component that forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process.

Choice B rationale:

Platelet factor III is not a component that forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process. Platelet factor III is not widely recognized in the context of clotting; it is more commonly referred to as tissue factor and is involved in the extrinsic pathway of coagulation.

Choice C rationale:

Von Willebrand factor (VWF) is a protein that plays a crucial role in hemostasis. It forms an adhesive bridge between platelets and vascular subendothelial structures, particularly at sites of vascular injury. VWF helps platelets adhere to the injured vessel wall, leading to the formation of a stable blood clot. This process is essential for preventing excessive bleeding. A deficiency or dysfunction in VWF can lead to von Willebrand disease, a bleeding disorder characterized by prolonged bleeding times.

Choice D rationale:

Adenosine diphosphate (ADP) is a molecule released by platelets when they are activated. ADP helps in the aggregation of platelets, but it does not directly form an adhesive bridge between platelets and vascular subendothelial structures.

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Correct Answer is C

Explanation

Choice A rationale:

Neutropenia is a condition characterized by a low number of neutrophils, a type of white blood cell. Neutropenic patients are at increased risk of infections, but neutropenia does not cause specific changes in the tongue surface. The smooth and shiny tongue surface described in the question is not indicative of neutropenia.

Choice B rationale:

Polycythemia is a condition characterized by an abnormally high concentration of hemoglobin in the blood. It can cause the skin to appear reddish or flushed, but it does not directly cause changes in the tongue surface such as smoothness and shininess.

Choice C rationale:

Pernicious anemia is a type of anemia caused by a deficiency of vitamin B12, which is essential for the formation of red blood cells and the maintenance of the nervous system. One of the characteristic signs of pernicious anemia is glossitis, which is inflammation of the tongue that can make the tongue appear smooth and shiny. This finding aligns with the description provided in the question.

Choice D rationale:

Elevated estrogen levels can cause changes in the skin, such as increased pigmentation or the development of spider veins, but they do not directly cause changes in the tongue surface as described in the question.

A. "Are you pregnant?” B. "Do you need to urinate?” C. "Do you have a headache or confusion?” D. "Are you taking antiseizure medications?”

Correct Answer is C

Explanation

Choice A rationale:

While pregnancy can contribute to increased blood pressure, it is not the priority question in this scenario. The sudden rise in blood pressure could indicate a hypertensive crisis, which needs immediate attention.

Choice B rationale:

Urination is not directly related to sudden rises in blood pressure. While urinary issues could be a sign of certain conditions, they are not the priority when dealing with a hypertensive emergency.

Choice C rationale:

A sudden rise in blood pressure can lead to symptoms such as headache and confusion, which could indicate a hypertensive crisis. This question is crucial to assess neurological symptoms, which can be indicative of target organ damage due to hypertension.

Choice D rationale:

Antiseizure medications are not directly related to sudden increases in blood pressure. Neurological symptoms (like those in choice C) are more indicative of a hypertensive crisis and require immediate attention.

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Which component forms an adhesive bridge between platelets and vascular subendothelial structures in the clotting process?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse notes that a patient has a smooth and shiny tongue surface.The nurse would attribute these findings to which condition?

Correct Answer is C

Explanation

A female patient with chronic hypertension is admitted to the emergency department with a sudden rise in blood pressure (BP) Which question is the priority for the nurse to ask the patient?

Correct Answer is C

Explanation

A patient reports leg pain that awakens the patient at night.The patient reports that the same pain develops in the legs when they are elevated and disappears when the legs are dangled.Which condition would the nurse suspect?

Which manifestation is related to target organ disease from hypertension? Select all that apply.One, some, or all responses may be correct.

The nurse provides education to a patient with thrombocytopenia about precautions to be taken at home. The nurse identifies that further teaching is needed when the patient performs which action?

The nurse suspects that which condition associated with chronic heart failure is the cause of a patient's inability to sleep well due to frequent urination?

The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

Which arterial blood gas (ABG) data corresponds with a patient's clinical manifestations of respiratory alkalosis?

Which strategy is most important for a nurse to include when planning care for a patient who has neutropenia?