NCLEX-RN
Health Promotion and Maintenance NCLEX RN Questions Questions
Extract:
Question 1 of 5
A client with asthma is being admitted for breathing difficulties. His arterial blood gas results are pH 7.26, PCO2 49, PaO2 90, and HCO3- 21. Which of the following best describes this condition?
Correct Answer: A
Rationale: In this case, the client's arterial blood gas results show a pH of 7.26 and a PCO2 of 49, both of which are abnormal. A pH below the normal range of 7.35-7.45 indicates acidosis. The elevated PCO2 of 49 mmHg suggests respiratory acidosis as the primary issue. The normal range for PCO2 is 35-45 mmHg, so a value of 49 indicates the retention of excess CO2, leading to acidosis. The low HCO3- level of 21 also supports the presence of metabolic acidosis; however, the primary abnormality is respiratory, making this an uncompensated respiratory acidosis.
Therefore, the correct answer is 'Uncompensated respiratory acidosis.'
Choice B, 'Compensated respiratory alkalosis,' is incorrect because the client's pH is acidic, not alkalotic. Additionally, there is no compensation occurring for the primary respiratory acidosis indicated by the elevated PCO2.
Choice C, 'Uncompensated metabolic acidosis,' is incorrect because while the HCO3- level is low, the primary issue indicated by the elevated PCO2 is respiratory acidosis.
Choice D, 'Compensated metabolic alkalosis,' is incorrect since the arterial blood gas results do not support a metabolic alkalosis. The low HCO3- level would typically be seen in metabolic acidosis, but in this case, the primary issue is respiratory acidosis.
Question 2 of 5
Mrs. O is seen for follow-up after an episode of acute pancreatitis. Her physician orders a serum amylase level and the result is 200 U/L. Which of the following is a potential cause of this result?
Correct Answer: D
Rationale: An elevated serum amylase level after pancreatitis may indicate another attack of the condition. It is common to order serum amylase as part of routine follow-up after pancreatitis. Elevated levels can also be seen in related gastrointestinal conditions like cholecystitis or an intestinal blockage.
Therefore, in this case, the most likely cause of the elevated serum amylase level is a recurrence or ongoing pancreatitis. The other options, including pregnancy, hypertension, and renal failure, are not typically associated with an elevated serum amylase level in the context of follow-up after acute pancreatitis.
Question 3 of 5
Mr. Y had surgery two days ago and is recovering on the surgical unit of the hospital. Just before lunch, he develops chest pain and difficulties with breathing. His respiratory rate is 32/minute, his temperature is 100.8°F, and he has rales on auscultation. Which of the following nursing interventions is most appropriate in this situation?
Correct Answer: C
Rationale: Chest pain, dyspnea, tachypnea, mild fever, and rales or crackles on auscultation in a client who had surgery 2 days ago may be indicative of a pulmonary embolism. The nurse should administer oxygen to address his breathing and assist him to a comfortable position to facilitate better oxygenation before contacting the physician. Placing the client in the Trendelenburg position is not recommended in this situation as it may worsen a potential pulmonary embolism by increasing venous return. Contacting the physician for antibiotics is not the priority as the immediate concern is addressing the breathing difficulty. Decreasing the IV rate is not indicated in this situation where the client is experiencing respiratory distress and needs oxygen therapy.
Question 4 of 5
The nurse is caring for a client diagnosed with type 1 diabetes mellitus. Because the client is at risk for hypoglycemia, which instructions should the nurse teach the client to follow?
Correct Answer: A
Rationale: Glucose tablets are taken if a hypoglycemic reaction occurs. Glucagon is also a medication that may be prescribed to be administered subcutaneously or intramuscularly if the client loses consciousness and is unable to take glucose by mouth. Glucagon releases glycogen stores and raises the blood glucose levels of hypoglycemic clients. Family members can be taught to administer this medication and possibly to prevent an emergency department visit. Acetone in the urine may indicate hyperglycemia. Although signs/symptoms of hypoglycemia need to be taught to the client, drowsiness is not the initial and key sign of this complication. The nurse should not instruct a client to omit insulin.
Question 5 of 5
A client with hyperkalemia may exhibit peaked T waves on an electrocardiogram. This manifestation is an early sign of high potassium levels, but the diagnosis should not be based on this aspect alone. Untreated, hyperkalemia can lead to progressively worsening cardiac instability.
Correct Answer: B
Rationale: A lumbar puncture is performed to obtain cerebrospinal fluid for analysis to investigate various conditions affecting the client. During the procedure, the client is typically positioned on their side or sitting leaning over a table with their back rounded. The physician inserts a needle into the back around the L4-L5 vertebrae to collect the sample. Option A is incorrect because a lumbar puncture does not draw blood but instead collects cerebrospinal fluid. Option C is incorrect as the client should not necessarily lie flat for 24 hours post-procedure. Option D is incorrect as the common risks of a lumbar puncture include headache, back pain, and potential infection, not nausea, rash, or hypotension.