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: A

Rationale: Shoulder dystocia is an obstetric emergency where one of the baby's shoulders becomes impacted behind the mother's pubic bone after the head delivers. This can lead to compression of the umbilical cord and compromise fetal oxygenation. The most critical nursing intervention in managing shoulder dystocia is applying suprapubic pressure to dislodge the impacted shoulder and allow for delivery of the baby. By gently pushing downwards on the mother's abdomen just above the pubic bone, the shoulder can be released, and the baby can be delivered successfully. This intervention should be prioritized to prevent potential complications for both the mother and the baby. Episiotomy may be considered if necessary, but it is secondary to addressing the shoulder dystocia. Oropharyngeal airway insertion and administering magnesium sulfate are not indicated in the immediate management of shoulder dystocia.

Correct Answer: D

Rationale: Pemoline (Cylert) is a central nervous system stimulant used in the treatment of ADHD. One of the significant potential side effects of pemoline is hepatotoxicity, which can manifest as elevated liver function test results. Therefore, the nurse must monitor the patient's liver function regularly while they are taking pemoline to monitor for any signs of liver damage or dysfunction. It is essential to educate the patient about the signs and symptoms of liver problems, such as jaundice (yellowing of the skin or eyes), abdominal pain, nausea, or dark urine, and to report any such symptoms immediately to their healthcare provider. Regular monitoring and early detection of liver function abnormalities can help prevent severe liver damage in patients taking pemoline.

Correct Answer: C

Rationale: The correct response for the nurse in this situation would be to offer the victim a shower after evidence is collected. It is essential to preserve any physical evidence that may be present from the assault during the forensic examination. Allowing the victim to shower before evidence is collected could potentially compromise the evidence and hinder the investigation. The nurse should provide support to the victim during this difficult time and assure them that they will have the opportunity to shower once the necessary evidence is obtained. It is also crucial for the nurse to offer empathy and understanding while explaining the importance of preserving any evidence related to the assault.

Correct Answer: B

Rationale: Supplying the patient with paper tissues to use when touching doorknobs is the most appropriate response in this situation. This action acknowledges and respects the patient's anxiety while providing a practical solution to help her cope. Forcing her to touch doorknobs or discouraging her concerns would not address the underlying anxiety and may lead to increased distress. Encouraging her to scrub doorknobs with a strong antiseptic is not necessary and may exacerbate her anxiety. Explaining that her concerns are part of her illness may invalidate her feelings and is not a constructive way to address the situation. Supplying her with paper tissues allows her to feel more comfortable while still being able to navigate her daily activities.

Correct Answer: B

Rationale: The presentation of a patient with diabetes mellitus showing symptoms of polyuria, polydipsia, nocturia, and fatigue along with laboratory findings of hyperglycemia, glycosuria, and ketonuria is indicative of diabetic ketoacidosis (DKA). DKA is a serious complication of diabetes characterized by hyperglycemia, metabolic acidosis, and ketosis. The increased glucose levels lead to glycosuria, causing osmotic diuresis resulting in polyuria, polydipsia, and nocturia. The body starts breaking down fats for energy in the absence of sufficient insulin, leading to the production of ketones causing ketonuria. The patient may also experience fatigue due to the metabolic abnormalities present in DKA.

Correct Answer: A

Rationale: The right to considerate and respectful care irrespective of socio-economic status is applicable in this case because Mr. Steve is facing financial difficulties in paying for his medical bills. This right ensures that all patients receive proper treatment and care regardless of their ability to pay. It emphasizes that every individual deserves to be treated with dignity and respect, regardless of their financial situation. In Mr. Steve's case, being referred to a social worker due to inability to pay should not impact the quality of care and respect he receives from healthcare providers.

Correct Answer: A

Rationale: The BEST position for a patient in shock is the modified Trendelenburg position. In this position, the patient's legs are elevated above the level of the heart to enhance blood flow back to the heart and vital organs. Placing the patient in the modified Trendelenburg position helps increase venous return, improves cardiac output, and promotes perfusion to vital organs, which can be crucial in managing shock. This position can help stabilize the patient's condition while awaiting further medical intervention.

Correct Answer: D

Rationale: The presentation described, including a well-demarcated, hyperpigmented patch with irregular borders, asymmetric color distribution, and increase in size over a short period, is concerning for melanoma. Melanoma is a type of skin cancer that arises from melanocytes, the cells that produce pigment in the skin. The irregular borders, color variation, and growth over time are classic signs of melanoma. Melanomas are potentially dangerous and should be evaluated promptly by a healthcare provider for proper diagnosis and treatment. It is important to distinguish melanoma from other benign lesions like melanocytic nevus (mole), lentigo simplex, and seborrheic keratosis, as early detection and treatment of melanoma can significantly impact patient outcomes.