Which imaging modality is most commonly used to diagnose fractures of the long bones, such as the femur or tibia?

Correct Answer: A

Rationale: X-ray is the most commonly used imaging modality to diagnose fractures of the long bones, such as the femur or tibia. X-rays are readily available, fast, cost-effective, and provide detailed images of the bone structures. Fractures appear as breaks or discontinuities in the bone on X-ray images, making it an excellent tool for diagnosing bone fractures. In many cases, X-rays are sufficient to confirm the presence, location, and type of fracture, allowing for appropriate treatment planning. Other imaging modalities like MRI and CT scans may be used for further evaluation in complex cases, but X-ray remains the initial and primary choice for diagnosing long bone fractures.

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: E

Rationale: All of the statements (A-D) are true when discussing the testing of vision in infants and children separately from testing in adults. However, statement E is NOT true. The course of visual and cognitive development MUST be taken into account in evaluating infants and children's visual abilities. It is crucial to consider the stage of development a child is in when evaluating their vision, as their visual abilities can change rapidly during early childhood. Ignoring the course of development could lead to incorrect assessments and misunderstandings about the child's visual capabilities.

Correct Answer: A

Rationale: Zenker's diverticulum is a condition in which there is a pouch or sac that forms at the posterior pharyngeal wall above the upper esophageal sphincter. It can present with symptoms such as sensation of a foreign body stuck in the throat, difficulty swallowing (dysphagia), and odynophagia (painful swallowing). Flexible laryngoscopy can reveal a submucosal mass arising from the posterior pharyngeal wall, which is characteristic of Zenker's diverticulum.

Correct Answer: A

Rationale: Naloxone is a medication used to reverse the effects of an opioid overdose by binding to opioid receptors and displacing the opioids. Administering naloxone intravenously is the recommended intervention for managing a patient with a suspected opioid overdose as it can quickly reverse respiratory depression, sedation, and other effects of opioids. This intervention can be life-saving in cases of opioid overdose and is a critical step in the management of such patients. Providing respiratory support with bag-valve-mask ventilation may be necessary in addition to naloxone administration to ensure adequate oxygenation, but naloxone remains the primary intervention to reverse the effects of opioids. Encouraging the patient to drink fluids rapidly or administering benzodiazepines for sedation are not recommended interventions for managing a suspected opioid overdose.

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: D

Rationale: Ovarian torsion is the most likely cause of the pregnant woman's symptoms as described. Ovarian torsion occurs when the ovary twists on its pedicle, leading to compromised blood flow to the ovary. This can cause severe abdominal pain, bloating, and constipation. On examination, an abdominal mass may be palpable due to an enlarged, twisted ovary. Bowel sounds may be diminished due to the effect of the torsion on surrounding structures. Ectopic pregnancy, threatened abortion, and placenta previa are less likely to present with an abdominal mass and diminished bowel sounds.

Correct Answer: B

Rationale: The patient's presenting symptoms of chest pain worsened by inspiration and relieved by sitting forward, with associated DVT in the lower extremity, suggest a high likelihood of pulmonary embolism. Chest pain that worsens with inspiration due to pleuritic involvement is a classic symptom of pulmonary embolism. Additionally, the presence of DVT in the lower extremity represents a risk factor for the development of pulmonary embolism, as clots originating in the deep veins can travel to the pulmonary circulation to cause an obstruction. Patients with pulmonary embolism may also exhibit signs of right heart strain, such as tachycardia, tachypnea, and sometimes hemoptysis.

Correct Answer: B

Rationale: Triangulation is the technique that refers to the use of multiple referents to draw conclusions about what constitutes the truth. In the context provided in the question, Nurse Tarly is organizing a study to investigate the "Caring behavior of Staff-Nurses and Satisfaction of Women with Ostomy". By gathering data from various sources such as observation, interviews, and surveys, Nurse Tarly can triangulate the information to gain a comprehensive understanding of the situation. Triangulation helps to validate findings, enhance the credibility of the study, and provide a more well-rounded view of the issue at hand.