What is the most common cause of community-acquired pneumonia in adults?

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Question 1 of 9

What is the most common cause of community-acquired pneumonia in adults?

Correct Answer: B

Rationale: The correct answer is B: Streptococcus pneumoniae. This bacterium is the most common cause of community-acquired pneumonia in adults due to its prevalence and ability to cause infections in the lungs. It accounts for a significant portion of pneumonia cases worldwide. Staphylococcus aureus (A) is more commonly associated with healthcare-associated pneumonia. Mycoplasma pneumoniae (C) typically causes atypical pneumonia, which tends to be milder and more common in younger individuals. Pseudomonas aeruginosa (D) is more commonly seen in individuals with underlying health conditions or compromised immune systems, rather than in healthy adults with community-acquired pneumonia.

Question 2 of 9

A patient presents with pain in the shoulder. The nurse practitioner knows that there are four rotator cuff muscles. The muscle that initiates abduction movement at the shoulder is known as the:

Correct Answer: A

Rationale: Rationale: The correct answer is A: Supraspinatus. This muscle is responsible for initiating abduction movement at the shoulder joint. It is located on the top of the shoulder blade and assists in lifting the arm away from the body. The other choices, B: Infraspinatus, C: Levator scapulae muscle, and D: Subscapularis, are not involved in initiating abduction movement at the shoulder. Infraspinatus is responsible for external rotation, Levator scapulae muscle elevates the scapula, and Subscapularis assists in internal rotation of the shoulder joint.

Question 3 of 9

You feel a small mass that you think is a lymph node. It is mobile in both the up-and- down and side-to-side directions. Which of the following is most likely?

Correct Answer: B

Rationale: The correct answer is B: Lymph node. A mobile mass that is palpable and moves in multiple directions is characteristic of a lymph node. Lymph nodes are small, bean-shaped structures that are part of the immune system and can move freely when touched. Incorrect choices: A: Cancer - A cancerous mass would typically be fixed and not mobile. C: Deep scar - Scars are usually fixed and do not move when touched. D: Muscle - Muscles are usually deeper in the body and not typically palpable as a mobile mass.

Question 4 of 9

Salmeterol (Serevent) in combination with an inhaled steroid is prescribed for a patient with moderate persistent asthma. What is the most important teaching point about salmeterol?

Correct Answer: A

Rationale: The correct answer is A: It is not effective during an acute asthma attack. Salmeterol is a long-acting beta agonist used for maintenance therapy, not for acute attacks. It does not provide immediate relief. Choices B and C are incorrect because salmeterol's onset of action is not immediate, and it may take days to weeks to achieve full effect. Choice D is incorrect because salmeterol should not be used in children under 12 years old.

Question 5 of 9

Louise, a 60-year-old, complains of left knee pain associated with tenderness throughout, redness, and warmth over the joint. Which of the following is least helpful in determining if a joint problem is inflammatory?

Correct Answer: B

Rationale: The correct answer is B (Pain) because pain is a common symptom in both inflammatory and non-inflammatory joint conditions. Tenderness, warmth, and redness are more specific to inflammatory joint problems. Tenderness indicates localized inflammation, warmth suggests increased blood flow and inflammation, and redness signifies dilated blood vessels and inflammation. Therefore, pain alone is less helpful in determining if a joint problem is inflammatory compared to the other symptoms.

Question 6 of 9

Ms. Wright comes to your office, complaining of palpitations. While checking her pulse you notice an irregular rhythm. When you listen to her heart, every fourth beat sounds different. It sounds like a triplet rather than the usual "lub dup." How would you document your examination?

Correct Answer: C

Rationale: The correct answer is C: Regularly irregular rhythm. This is the appropriate documentation for Ms. Wright's presentation as her pulse demonstrates a pattern of irregularity with every fourth beat sounding different. This indicates a regularly irregular rhythm, where there is a discernible pattern to the irregularity. Rationale: 1. Regular rate and rhythm (Choice A) is incorrect as Ms. Wright's palpitations and the irregularity in her pulse indicate an irregular rhythm. 2. Irregularly irregular rhythm (Choice B) is incorrect as this term is used to describe arrhythmias like atrial fibrillation, which do not have a discernible pattern of irregularity. 3. Bradycardia (Choice D) is incorrect as it refers to a slow heart rate, which is not the primary concern in this scenario where the focus is on the irregular rhythm. In summary, the correct choice (C) accurately describes the specific irregular pattern observed in Ms. Wright's pulse, distinguishing it from

Question 7 of 9

Which one of the following statements is true of Munchausen syndrome by proxy?

Correct Answer: B

Rationale: The correct answer is B because in Munchausen syndrome by proxy, the patient only exhibits symptoms under the direct care or supervision of the abuser. This is because the abuser intentionally causes or fabricates symptoms in the victim to gain attention or sympathy. In contrast, the other choices are incorrect. A is incorrect because the injury is inflicted by the abuser, not self-inflicted by the patient. C is incorrect as the caregiver is the one perpetrating the abuse. D is incorrect because the abuser is often overly involved and manipulative, rather than inattentive and uncaring.

Question 8 of 9

What intervention does the American College of Rheumatology recommend as first-line therapy for osteoarthritis, rheumatoid arthritis, or something else?

Correct Answer: D

Rationale: The correct answer is D: Exercise and weight loss. The American College of Rheumatology recommends this intervention as first-line therapy for osteoarthritis and rheumatoid arthritis due to its proven benefits in reducing pain, improving joint function, and overall quality of life. Exercise helps strengthen muscles around the joints, improve flexibility, and reduce stiffness. Weight loss can also alleviate pressure on the joints, especially in weight-bearing joints. A: Diagnostic workup to rule out rheumatoid arthritis - This is not the first-line therapy but rather a step in the diagnostic process. B: NSAID use at the lowest effective dose - While NSAIDs may help with pain management, they are not recommended as the first-line therapy due to potential side effects. C: Acetaminophen use up to 4 grams/day - Acetaminophen can be used for pain relief, but it is not as effective as exercise and weight loss in managing osteoarthritis or rheumatoid arthritis symptoms

Question 9 of 9

Mr. Roberts, a 72-year-old patient who has sought medical care on an intermittent basis in the past, complains of aching discomfort in his perineal area, urinary urgency, and frequency for the past few years. He also complains of insomnia and intermittent anxiety that he attributes to loneliness after his wife’s death about a year ago. Digital rectal examination (DRE) reveals a slightly enlarged, nontender prostate with no palpable nodules. Perineal examination is normal. Bladder scan is unremarkable and postvoid residual urine volume is 50 mL. Urinalysis shows no WBCs or RBCs. Urine culture is negative. Previous treatment has included dietary modifications and alpha-blocker medication. What is the most appropriate next step?

Correct Answer: D

Rationale: The correct answer is D: Screen for depression. The patient's symptoms of insomnia, anxiety, and loneliness after his wife's death suggest he may be experiencing depression, which can manifest as physical symptoms like urinary urgency and frequency. Since the patient has already received appropriate treatment for his urinary symptoms, addressing his mental health is the next crucial step. This can help improve his overall well-being and quality of life. Starting an antibiotic course (choice A) is not indicated as there are no signs of infection. Initiating a 5-alpha-reductase inhibitor (choice B) is not necessary given the absence of specific indications such as obstructive voiding symptoms. Urodynamic testing (choice C) is not warranted at this stage as the patient's history and findings do not suggest underlying bladder dysfunction.

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