Nokea
Although HAV antigens are not tested in the blood, they stimulate specific immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies. Which antibody indicates there is acute HAV infection?
- A. Anti-HBc IgG
- B. Anti-HBc IgM
- C. Anti-HAV IgG
- D. Anti-HAV IgM
Correct Answer: D
Rationale: The correct answer is D: Anti-HAV IgM. IgM antibodies indicate acute infection as they are the first antibodies produced in response to a new infection. In the case of HAV, the presence of Anti-HAV IgM suggests recent exposure to the virus.
A: Anti-HBc IgG is not relevant to HAV infection. It indicates past or chronic hepatitis B infection.
B: Anti-HBc IgM is specific to hepatitis B infection, not HAV.
C: Anti-HAV IgG indicates past exposure or immunity to HAV, not acute infection.
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Priority Decision: A patient returns to the surgical unit with a nasogastric (NG) tube to low intermittent suction, IV fluids, and a Jackson-Pratt drain at the surgical site following an exploratory laparotomy and repair of a bowel perforation. Four hours after admission, the patient experiences nausea and vomiting. What is a priority nursing intervention for the patient?
- A. Assess the abdomen for distention and bowel sounds.
- B. Inspect the surgical site and drainage in the Jackson-Pratt.
- C. Check the amount and character of gastric drainage and the patency of the NG tube.
- D. Administer prescribed prochlorperazine (Compazine) to control the nausea and vomiting.
Correct Answer: C
Rationale: The correct answer is C: Check the amount and character of gastric drainage and the patency of the NG tube. This is the priority nursing intervention because the patient is experiencing nausea and vomiting, which could indicate potential complications related to the NG tube, such as blockage or displacement. By checking the gastric drainage and NG tube patency, the nurse can assess if the patient's symptoms are related to these issues and take appropriate actions to address them.
Choice A is incorrect because assessing the abdomen for distention and bowel sounds is important but not the priority in this situation where the patient is experiencing nausea and vomiting. Choice B is incorrect as inspecting the surgical site and drainage in the Jackson-Pratt drain is also important but not as urgent as checking the NG tube patency in this case. Choice D is incorrect as administering medication should not be the first action taken without first assessing the underlying cause of the symptoms.
If the submandibular salivary gland stops functioning:
- A. The volume of salivary secretion will be reduced by 20%
- B. There would be severe deficiency of
- C. amylase
- D. There would be no mucins in saliva
Correct Answer: B
Rationale: The correct answer is B because the submandibular salivary gland is responsible for producing around 70-75% of total saliva, including amylase. If it stops functioning, there would be a severe deficiency of amylase, leading to impaired digestion of starches. Choice A is incorrect because the reduction in salivary secretion would be more significant than 20%. Choice D is incorrect as mucins are produced by other salivary glands and not solely by the submandibular gland.
Which is most characteristic of carcinoma of the cecum or right colon (in contrast to carcinoma of the rectum)?
- A. anemia
- B. associated polyposis
- C. bowel obstruction
- D. diarrhea
Correct Answer: A
Rationale: The correct answer is A: anemia. Carcinoma of the cecum or right colon often presents with chronic blood loss, leading to iron deficiency anemia. This is due to the longer transit time in the right colon allowing for more time for blood to be lost and for the iron in the blood to be absorbed. Choices B, C, and D are less characteristic of carcinoma of the cecum or right colon. Polyposis is more commonly associated with familial adenomatous polyposis, bowel obstruction is more common in advanced stages regardless of location, and diarrhea is more commonly seen in rectal carcinomas due to irritation of the rectal mucosa.
Priority Decision: During the treatment of the patient with bleeding esophageal varices, what is the most important thing the nurse should do?
- A. Prepare the patient for immediate portal shunting surgery.
- B. Perform guaiac testing on all stools to detect occult blood.
- C. Maintain the patient's airway and prevent aspiration of blood.
- D. Monitor for the cardiac effects of IV vasopressin and nitroglycerin.
Correct Answer: C
Rationale: Rationale: The correct answer is C because maintaining the patient's airway and preventing aspiration of blood is the top priority in a patient with bleeding esophageal varices. This is crucial to prevent respiratory compromise and potential life-threatening complications. Immediate portal shunting surgery (A) is not the priority as stabilizing the patient comes first. Guaiac testing (B) is not the priority as it does not address the immediate risk of airway obstruction. Monitoring cardiac effects (D) is important but not as critical as ensuring the patient's airway is secure.
Which of these statements about the pharynx is true?
- A. It extends from the nasal and oral cavities superiorly to the esophagus anteriorly.
- B. The oropharynx is continuous superiorly with the nasopharynx.
- C. The nasopharynx is involved in digestion.
- D. The laryngopharynx is composed partially of cartilag
Correct Answer: B
Rationale: The correct answer is B because the oropharynx is indeed continuous superiorly with the nasopharynx, forming a passage for both air and food. This continuity allows for the passage of food and air between the oral and nasal cavities.
A is incorrect because the pharynx extends from the nasal and oral cavities superiorly to the esophagus posteriorly, not anteriorly.
C is incorrect because the nasopharynx is not involved in digestion; it primarily functions in respiration and contains the openings of the Eustachian tubes.
D is incorrect because the laryngopharynx is not composed partially of cartilage; it is a muscular passage that connects the oropharynx and the esophagus.