Ms. Jackson has been suffering from persistent vomiting for two days. She appears to be lethargic and weak and has myalgia. She is noted to have dry mucous membranes and her capillary refill time takes more than 4 seconds. She is diagnosed with gastroenteritis and dehydration. Measurement of arterial blood gas shows pH 7.5, PaO2 85 mm Hg, PaCO2 40 mm Hg, and HCO3 34 mmol/L. What acid base disorder is shown?
Metabolic Alkalosis, Partially Compensated
Respiratory Acidosis, Partially Compensated
Respiratory Alkalosis, Uncompensated
Metabolic Alkalosis, Uncompensated
The Correct Answer is D
Choice A reason: This choice is incorrect. Partial compensation would typically involve a change in PaCO2 to counterbalance the elevated bicarbonate, which is not observed here.
Choice B reason: This choice is incorrect. Respiratory acidosis is characterized by a low pH and an elevated PaCO2, which is not consistent with the given values.
Choice C reason: This choice is incorrect. Respiratory alkalosis would present with a low PaCO2 due to hyperventilation, which is not the case here.
Choice D reason: This is the correct choice. The elevated pH and HCO3 with a normal PaCO2 indicate metabolic alkalosis without respiratory compensation. Persistent vomiting can lead to loss of stomach acid, which causes metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Propranolol is contraindicated in patients with asthma as it may cause bronchoconstriction, exacerbating respiratory difficulties.
Choice B reason: Glaucoma is not a contraindication for propranolol; in fact, betablockers can be used to treat glaucoma by reducing intraocular pressure.
Choice C reason: Depression is not a direct contraindication, but caution is advised as propranolol can sometimes worsen symptoms of depression.
Choice D reason: Propranolol is often used as a preventive treatment for migraines and is not contraindicated in patients with this condition.
Correct Answer is C
Explanation
Choice A reason: The statement is incorrect because TSH does not attach to a protein in the blood; it stimulates the thyroid gland to produce thyroid hormones.
Choice B reason: This choice is partially correct. TSH does stimulate the thyroid gland, but the main purpose of the test is not to measure the 'feeding' of the gland but to assess its function and how well it's producing thyroid hormones.
Choice C reason: This is the correct statement. TSH levels are measured to determine the thyroid gland's activity, which directly influences the metabolic rate. The normal range for TSH levels in adults is typically 0.4 to 4.0 milliunits per liter (mU/L). However, these values can vary slightly based on the laboratory and the age of the individual.
Choice D reason: While TSH does influence energy levels by regulating thyroid hormone production, this choice does not directly explain the purpose of measuring TSH levels.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.