A nurse is reinforcing teaching with a client about preventing the transmission of hepatitis A. The nurse should identify that hepatitis A is transmitted by which of the following routes?
Maternal-fetal
Fecal-oral contamination
Genital sexual contact
Blood to blood
The Correct Answer is B
Choice A reason: This is an incorrect route, because maternal-fetal transmission of hepatitis A is very rare and occurs only if the mother has acute hepatitis A during the third trimester of pregnancy.
Choice B reason: This is the correct route, because fecal-oral contamination of hepatitis A is the most common mode of transmission. Hepatitis A is a viral infection that affects the liver and is spread through ingestion of contaminated food or water, or contact with infected feces.
Choice C reason: This is an incorrect route, because genital sexual contact of hepatitis A is uncommon and occurs only if there is oral-anal contact with an infected person.
Choice D reason: This is an incorrect route, because blood to blood transmission of hepatitis A is also uncommon and occurs only if there is exposure to infected blood or blood products, such as through needle sharing or transfusion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: This is the correct imbalance, because respiratory alkalosis is a condition that occurs when the blood pH is high, the PaCO2 is low, and the HCO3 is normal or low. Respiratory alkalosis is caused by hyperventilation, which can result from anxiety, fever, pain, or mechanical ventilation.
Choice B reason: This is an incorrect imbalance, because metabolic acidosis is a condition that occurs when the blood pH is low, the PaCO2 is normal or low, and the HCO3 is low. Metabolic acidosis is caused by the accumulation of acids in the blood, which can result from diabetic ketoacidosis, renal failure, or lactic acidosis.
Choice C reason: This is an incorrect imbalance, because respiratory acidosis is a condition that occurs when the blood pH is low, the PaCO2 is high, and the HCO3 is normal or high. Respiratory acidosis is caused by hypoventilation, which can result from airway obstruction, chest injury, or narcotic overdose.
Choice D reason: This is an incorrect imbalance, because metabolic alkalosis is a condition that occurs when the blood pH is high, the PaCO2 is normal or high, and the HCO3 is high. Metabolic alkalosis is caused by the loss of acids from the blood, which can result from vomiting, gastric suction, or diuretic therapy.
Correct Answer is B
Explanation
Choice A reason: This is a nonspecific finding, because a report of a severe headache can be caused by many factors, such as concussion, migraine, or tension. A headache alone is not an indication of a skull fracture.
Choice B reason: This is a specific finding, because clear fluid coming from the nares can indicate a cerebrospinal fluid (CSF) leak, which is a sign of a basilar skull fracture. CSF is the fluid that surrounds and protects the brain and spinal cord, and can leak through the nose or ears if the skull is fractured.
Choice C reason: This is a nonspecific finding, because a brief change in level of consciousness can be caused by many factors, such as hypoxia, hypoglycemia, or seizure. A change in level of consciousness alone is not an indication of a skull fracture.
Choice D reason: This is a nonspecific finding, because bleeding from the top of the scalp can be caused by many factors, such as laceration, abrasion, or contusion. Bleeding from the scalp alone is not an indication of a skull fracture.
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