Foundations and Adult Health Nursing Study Guide Answers

Correct Answer: C

Rationale: Mast cells are primarily responsible for mediating allergic responses such as severe allergies. When an allergen triggers the immune response, mast cells release histamine, leukotrienes, and other inflammatory mediators. These substances cause symptoms such as difficulty breathing, hives, and swelling. Basophils also release histamine, but mast cells are more abundant in tissues and play a significant role in allergic reactions. Eosinophils are involved in allergic reactions but are more focused on combating parasitic infections. Neutrophils are not typically involved in allergic responses but play a key role in combating bacterial infections.

Correct Answer: A

Rationale: Patients with COPD are at increased risk for developing ventilator-induced lung injury (VILI) due to their underlying lung pathology. Using a low tidal volume strategy (6-8 ml/kg predicted body weight) has been shown to reduce the risk of VILI in these patients. Additionally, applying high positive end-expiratory pressure (PEEP) helps to recruit collapsed alveoli, improve oxygenation, and decrease the risk of barotrauma by keeping the alveoli open throughout the respiratory cycle. Therefore, the most appropriate ventilator settings to minimize the risk of VILI in a COPD patient with acute exacerbation and respiratory failure requiring mechanical ventilation would be low tidal volume and high PEEP.

Correct Answer: C

Rationale: Bone pain in the back of the ribs is a classic manifestation of multiple myeloma. Multiple myeloma is a type of cancer that primarily affects plasma cells in the bone marrow, leading to weakened bones and bone pain. Patients with multiple myeloma often experience bone pain in areas such as the ribs, spine, and pelvis. The bone pain is typically persistent and worsens with movement or pressure. Additionally, other common symptoms of multiple myeloma include anemia, kidney damage, recurrent infections, and elevated calcium levels in the blood.

Correct Answer: A

Rationale: Given the sudden-onset severe scrotal pain, swelling, and erythema, along with the physical examination findings of a tender, swollen, and high-riding testicle, the most likely diagnosis is testicular torsion. Testicular torsion occurs when the spermatic cord twists, leading to compromised blood flow to the testicle, causing ischemia and severe pain. It is considered a surgical emergency that requires prompt diagnosis and intervention to salvage the affected testicle. Prompt surgical detorsion is necessary to prevent irreversible testicular damage. While epididymitis, testicular trauma, and testicular tumors can also present with scrotal pain and swelling, the presence of a high-riding testicle in this context is highly suggestive of testicular torsion.

Correct Answer: D

Rationale: When a patient is crying and continuously pulling at a specific body part, such as Catherine pulling her right ear, it indicates discomfort or pain in that area. Nurse Selma's most appropriate action would be to further assess the description and frequency of the pain. This will help her identify the possible cause of the pain, whether it is due to an ear infection, injury, or any other underlying issue. Understanding the nature and intensity of the pain will guide Nurse Selma in providing appropriate care and intervention for Catherine. It is crucial to address the patient's pain promptly to ensure their comfort and well-being. Referring to the attending physician may be necessary after this initial assessment but assessing the pain should be the immediate priority.