Which of the following cellular receptors is responsible for recognizing pathogen-associated molecular patterns (PAMPs) and initiating innate immune responses?

Correct Answer: A

Rationale: Toll-like receptors (TLRs) are a group of cellular receptors responsible for recognizing pathogen-associated molecular patterns (PAMPs), which are molecular components commonly found on pathogens like bacteria and viruses. When TLRs recognize these PAMPs, they initiate signaling pathways that trigger the innate immune response, leading to inflammation, antimicrobial defense, and the activation of adaptive immunity. B cell receptors (BCRs) and T cell receptors (TCRs) are involved in adaptive immune responses and recognize specific antigens rather than PAMPs. Fc receptors primarily bind to the Fc portion of antibodies and are involved in antibody-mediated immune responses. Thus, TLRs specifically play a critical role in sensing and responding to pathogens through the recognition of PAMPs.

Correct Answer: C

Rationale: The symptoms described, including progressive weakness, muscle atrophy, fasciculations, dysphagia, and dysarthria primarily involving the upper and lower extremities, are classic features of amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease. ALS is a progressive neurodegenerative disorder that affects the motor neurons in the brain and spinal cord, leading to muscle weakness and atrophy. As the disease progresses, patients may develop difficulty swallowing (dysphagia) and speaking (dysarthria). In contrast, Parkinson's disease primarily involves movement-related symptoms such as tremors, muscle stiffness, and slow movements. Guillain-Barré syndrome (GBS) is an acute inflammatory demyelinating polyneuropathy that typically presents with ascending weakness and sensory abnormalities, often preceded by an infection. Myasthenia gravis is characterized by muscle weakness exacerbated by

Correct Answer: A

Rationale: The presentation described with sudden-onset, painless vision loss, a cherry-red spot at the macula, and attenuated retinal vessels is classic for central retinal artery occlusion (CRAO). CRAO occurs when the central retinal artery, which supplies blood to the inner retinal layers, becomes occluded. The cherry-red spot is due to the exposure of the underlying choroid, which still appears red as it is not affected by the blockage. Attenuated retinal vessels and a pale retina may also be seen due to ischemia. In contrast, central retinal vein occlusion (choice B) presents with sudden painless vision loss, retinal hemorrhages, dilated retinal veins, and cotton-wool spots. Retinal detachment (choice C) typically presents with flashes, floaters, and a curtain-like shadow across the vision. Acute angle-closure glaucoma (

Correct Answer: A

Rationale: In this critical situation, the safety of the wife is of utmost importance. Whenever a healthcare provider becomes aware of a direct threat to someone's safety, especially related to potential harm or violence, it is their ethical and legal responsibility to report this information to the appropriate authorities promptly. In this case, the nurse should alert the proper authorities, such as law enforcement or a mental health crisis team, to ensure that immediate steps are taken to protect the wife from harm. Confidentiality should be breached in situations where there is a clear threat to an individual's safety. Keeping the information confidential in this scenario could result in serious harm or even loss of life. The nurse must act quickly to protect the potential victim.

Correct Answer: B

Rationale: In a situation where a patient's temperature is dropping below the normal range during surgery, the nurse should prioritize actively warming the patient to prevent hypothermia. Administering a warming blanket or using a forced-air warming device are effective methods to increase the patient's body temperature and prevent any complications that may arise from hypothermia. Increasing the ambient room temperature can help, but it may not be as direct or effective as applying targeted heat sources to the patient. Documenting the temperature trend in the patient's chart is important for record-keeping purposes, but immediate action to address the dropping temperature is necessary. Continuously monitoring the patient's temperature closely is important, but action should be taken promptly to prevent further decline.

Correct Answer: A

Rationale: Von Willebrand disease is a hereditary bleeding disorder that results from a deficiency or dysfunction of von Willebrand factor (vWF), a protein that plays a key role in platelet adhesion and the initiation of primary hemostasis. The clinical manifestations of von Willebrand disease include recurrent mucocutaneous bleeding, such as nosebleeds, easy bruising, and gum bleeding. Laboratory findings typically show a prolonged bleeding time due to impaired platelet function, while platelet count, PT (prothrombin time), and aPTT (activated partial thromboplastin time) are usually normal. This distinguishes von Willebrand disease from other bleeding disorders such as hemophilia A (Factor VIII deficiency), which would show abnormal PT and aPTT due to deficiencies in specific clotting factors. Thrombocytopenia, on the other hand, would be characterized by a low platelet count

Correct Answer: A

Rationale: The appropriate sequence of steps in the assessment of a conscious trauma patient is the ABCDE approach, which stands for Airway, Breathing, Circulation, Disability, and Exposure.

Correct Answer: B

Rationale: The appropriate way to correct an error in the Nurses Notes is to draw a single line across the error and initial it. This method is recommended because it indicates that there was an error made, while still preserving the original information for audit and legal purposes. It shows transparency and accountability in documentation, as the original information remains visible. Taking the whole page out and replacing it with a fresh one can lead to discrepancies and potential legal issues if there are inconsistencies in the documentation. Using methods like using the sticky side of the plastic tape or a rubber eraser can make the documentation look unprofessional and raises questions about the accuracy and integrity of the notes.

Correct Answer: C

Rationale: Assessing the mental status of the patient is the PRIORITY nursing action to determine the patient's ability to concentrate and focus. This assessment includes evaluating the patient's level of alertness, orientation, memory, thought processes, and mood. By observing the patient's mental status, the nurse can gain valuable information about the patient's cognitive function, attention span, and ability to concentrate. This assessment will help guide further interventions and care planning for the patient. Asking for academic performance or conducting paper and pencil tests may be useful tools to assess concentration and focus, but they should come after a comprehensive evaluation of the patient's mental status. Referring the patient to a psychiatrist may be necessary based on the assessment findings, but it should not be the first step in determining the patient's ability to concentrate and focus.