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A healthcare professional is reviewing a patient's chart and notices that the patient suffers from Lyme disease. Which of the following microorganisms is related to this condition?
- A. Borrelia burgdorferi
- B. Streptococcus pyogenes
- C. Bacillus anthracis
- D. Enterococcus faecalis
Correct Answer: A
Rationale: Lyme disease, the most common vector-borne disease in the United States, is caused by the bacterium Borrelia burgdorferi. Borrelia burgdorferi is transmitted to humans through the bite of infected black-legged ticks. Streptococcus pyogenes is associated with strep throat and other infections, not Lyme disease. Bacillus anthracis causes anthrax, a separate infectious disease. Enterococcus faecalis is more commonly linked to urinary tract infections and other healthcare-associated infections, not Lyme disease.
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An 85-year-old male has been losing mobility and gaining weight over the last two months. The patient also has the heater running in his house 24 hours a day, even on warm days. Which of the following tests is most likely to be performed?
- A. CBC (complete blood count)
- B. ECG (electrocardiogram)
- C. Thyroid function tests
- D. CT scan
Correct Answer: C
Rationale: The symptoms of weight gain and poor temperature tolerance in an elderly male suggest a potential thyroid dysfunction. Thyroid function tests are crucial in differentiating between hyperthyroidism, hypothyroidism, and a euthyroid state. These tests involve measuring the serum levels of thyroid hormones T3 and T4, also known as thyroxine, to evaluate thyroid function accurately. A complete blood count (Choice A) would not directly address the symptoms presented. An electrocardiogram (Choice B) assesses heart activity and would not be the primary test for these symptoms. A CT scan (Choice D) provides detailed images of internal organs and structures, which would not be the initial investigation for the described symptoms.
A patient with leukemia is receiving chemotherapy that is known to depress bone marrow. A CBC (complete blood count) reveals a platelet count of 25,000/microliter. Which of the following actions related specifically to the platelet count should be included in the nursing care plan?
- A. Monitor for fever every 4 hours.
- B. Require visitors to wear respiratory masks and protective clothing.
- C. Consider transfusion of packed red blood cells.
- D. Check for signs of bleeding, including examination of urine and stool for blood.
Correct Answer: D
Rationale: A platelet count of 25,000/microliter indicates severe thrombocytopenia, which increases the risk of bleeding. It is crucial to initiate bleeding precautions, including regularly checking for signs of bleeding such as examining urine and stool for blood. Monitoring for fever every 4 hours (Choice A) should be included for neutropenic precautions, not specifically related to platelet count. Requiring visitors to wear respiratory masks and protective clothing (Choice B) is more relevant for patients with airborne precautions. Considering transfusion of packed red blood cells (Choice C) is not indicated for low platelet count but is more appropriate for managing anemia or low hemoglobin levels.
A healthcare provider calls a physician with the concern that a patient has developed a pulmonary embolism. Which of the following symptoms has the healthcare provider most likely observed?
- A. The patient is somnolent with decreased response to stimuli.
- B. The patient suddenly complains of chest pain and shortness of breath.
- C. The patient has developed a wet cough and the healthcare provider hears crackles on auscultation of the lungs.
- D. The patient has a fever, chills, and loss of appetite.
Correct Answer: B
Rationale: The correct answer is 'The patient suddenly complains of chest pain and shortness of breath.' Typical symptoms of pulmonary embolism include chest pain, shortness of breath, and severe anxiety. The physician should be notified immediately. Clinical signs and symptoms for pulmonary embolism are nonspecific; therefore, patients suspected of having pulmonary embolism"?because of unexplained dyspnea, tachypnea, or chest pain or the presence of risk factors for pulmonary embolism"?must undergo diagnostic tests until the diagnosis is ascertained or eliminated or an alternative diagnosis is confirmed. Choices A, C, and D describe symptoms that are not typically associated with a pulmonary embolism, making them incorrect.
When administering a shot of Vitamin K to a 30-day-old infant, which of the following target areas is the most appropriate?
- A. Gluteus maximus
- B. Gluteus minimus
- C. Vastus lateralis
- D. Vastus medialis
Correct Answer: C
Rationale: When administering medications to infants, it is common to use the vastus lateralis muscle in the thigh for injections. The preferred site is the junction of the upper and middle thirds of the vastus lateralis muscle. This area provides a good muscle mass for the injection and minimizes the risk of hitting nerves or blood vessels. The gluteus maximus and gluteus minimus are not typically used for infant injections due to the risk of injury to the sciatic nerve. The vastus medialis is not as commonly used as the vastus lateralis for infant injections.
A client is receiving digoxin (Lanoxin) 0.25 mg daily. The health care provider has written a new order to give metoprolol (Lopressor) 25 mg B.I.D. In assessing the client prior to administering the medications, which of the following should the nurse report immediately to the health care provider?
- A. Blood pressure 94/60 mm Hg
- B. Heart rate 76 bpm
- C. Urine output 50 ml/hour
- D. Respiratory rate 16 bpm
Correct Answer: A
Rationale: The correct answer is 'Blood pressure 94/60 mm Hg.' Both digoxin and metoprolol decrease the heart rate. Metoprolol specifically affects blood pressure. Therefore, the heart rate and blood pressure need to be within normal range (HR 60-100 bpm; systolic BP above 100 mm Hg) to safely administer both medications. A blood pressure of 94/60 mm Hg indicates hypotension, which could be exacerbated by metoprolol, necessitating immediate reporting to the healthcare provider. Choices B, C, and D are within normal limits and do not pose immediate risks related to the administration of these medications.