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 B

Explanation

The correct answer is B. Hypertonic saltwater.

Choice A rationale: Hypotonic saltwater would not cause significant fluid shifts into the alveoli. Instead, it would cause cells to swell due to the lower concentration of solutes outside the cells.

Choice B rationale: Hypertonic saltwater causes fluid to be drawn from the vascular space into the alveoli due to the higher concentration of solutes in the water compared to the body's cells. This can impair alveolar ventilation and result in hypoxia.

Choice C rationale: Hypotonic freshwater would cause cells to swell and potentially burst due to the lower concentration of solutes outside the cells, but it would not specifically cause fluid to be drawn into the alveoli.

Choice D rationale: Hypertonic freshwater is not a common classification for drowning water. Freshwater is typically hypotonic compared to body fluids, and it would not cause the same fluid shift as hypertonic saltwater.

A. Restricting all visitors. B. Placing the patient in a private room. C. Advising the patient to use only an electric shaver. D. Wearing a gown and gloves when in direct contact with the patient.

Correct Answer is B

Explanation

Choice A rationale:

Restricting all visitors might be beneficial in preventing infections, but it is not the most important strategy for a patient with neutropenia. The main concern is the risk of infections due to the compromised immune system.

Choice B rationale:

Placing the patient in a private room is crucial for a neutropenic patient. Neutropenia, characterized by a low absolute neutrophil count (ANC), significantly compromises the patient's immune system, making them highly susceptible to infections. Isolating the patient helps minimize the risk of exposure to pathogens, reducing the likelihood of infections.

Choice C rationale:

Using an electric shaver instead of a razor is advisable to prevent cuts and minimize the risk of skin infections. While this is a good practice, it is not the most important strategy compared to isolating the patient and using personal protective equipment (PPE) during direct patient care.

Choice D rationale:

Wearing a gown and gloves when in direct contact with the patient is essential to prevent the spread of infections. This is a necessary measure, but isolating the patient in a private room takes precedence as it minimizes the risk of exposure to pathogens, providing a safer environment for the neutropenic patient.

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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

In which type of water would a submersion injury cause the patient's fluid to be drawn from the vascular space into the alveoli, impairing alveolar ventilation and resulting in hypoxia?

Correct Answer is B

Explanation

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

Correct Answer is B

Explanation

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

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?

A patient who smokes reports chest pain while at rest.Which condition would the nurse suspect the patient is experiencing?

The nurse receives a health care provider's prescription to change a patient's IV from D5. half-normal saline with 40 mEq KCl/L to DSNS with 20 mEq KCl/L. Which set of serum laboratory values supports the rationale for this IV prescription change?

A patient's arterial blood gas (ABG) values include a pH of 7.48, a PaCO2 of 38, and an HCO3- of 30. Around which acid-base imbalance would the nurse plan the patient's care?

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?

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