Nokea
Which of the following lab values is elevated first after a client has a myocardial infarction?
- A. LDH
- B. troponin
- C. CPK
- D. SGOT
Correct Answer: B
Rationale: The correct answer is troponin. Troponin levels are the most specific and sensitive markers for myocardial infarction, and they begin to rise within a few hours after the event. CPK, SGOT, and LDH are also enzymes that can indicate myocardial damage, but troponin is the earliest and most specific indicator. CPK typically rises 4-8 hours after an infarction, followed by SGOT (AST) at 8-12 hours, and LDH at 12-24 hours post-infarction.
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What action should the emergency triage nurse take upon receiving the history that a client has a severe cough, fever, night sweats, and body wasting?
- A. Place the client in isolation until further assessment is completed.
- B. Seclude the client from other clients and visitors.
- C. Perform no intervention until test results confirm a diagnosis.
- D. Don personal protective equipment immediately.
Correct Answer: B
Rationale: The correct action for the emergency triage nurse to take upon receiving the history that a client has a severe cough, fever, night sweats, and body wasting is to seclude the client from other clients and visitors. These symptoms are suggestive of tuberculosis, a highly infectious disease. By secluding the client, the nurse can prevent the potential spread of the infection to others. Donning personal protective equipment, including gown, gloves, and a mask, is crucial when providing care to the client, but the immediate priority is to prevent the spread of infection by isolating the client. Placing the client in isolation until further assessment is completed ensures that the client is kept away from others until a proper diagnosis and treatment plan can be established, reducing the risk of transmission. Performing no intervention until test results confirm a diagnosis is inappropriate as immediate isolation is necessary in suspected cases of highly infectious diseases like tuberculosis.
A client with a nasogastric (NG) tube begins vomiting. What action should the nurse take?
- A. Retape the NG tube.
- B. Clamp the NG tube.
- C. Remove the NG tube.
- D. Check the NG tube placement.
Correct Answer: D
Rationale: When a client with a nasogastric (NG) tube begins vomiting, the nurse should first check the NG tube placement. Vomiting can be a sign of tube displacement, which can lead to serious complications. Retaping the tube (Choice A), clamping it (Choice B), or removing it (Choice C) without first assessing its placement can be harmful or ineffective. Checking the NG tube placement is crucial as it ensures that the tube is in the correct position and prevents potential complications. Retaping the NG tube (Choice A) is incorrect because the priority is to check the placement first. Clamping the NG tube (Choice B) or removing it (Choice C) without verifying the placement can be dangerous if the tube is dislodged. Thus, these actions should not be taken before confirming the tube's position.
During surgery, it is found that a client with adenocarcinoma of the rectum has positive peritoneal lymph nodes. What is the next most likely site of metastasis?
- A. brain
- B. bone
- C. liver
- D. mediastinum
Correct Answer: C
Rationale: In cases of adenocarcinoma of the rectum with positive peritoneal lymph nodes, the most likely site of metastasis is the liver. Colon tumors commonly spread through the lymphatics and portal vein to the liver. While metastasis to the brain, bone, or mediastinum is possible, the liver is typically the first to be affected due to the anatomical pathways involved in colorectal cancer metastasis. Therefore, the correct answer is the liver. Metastasis to the brain, bone, or mediastinum would be less likely at this stage of colorectal cancer progression.
Which of the following isoenzymes is elevated in a client who has had a myocardial infarction?
- A. CPK-BB
- B. CPK-MM
- C. CPK-MB
- D. CPK-MI
Correct Answer: C
Rationale: CPK-MB is the correct answer as it is elevated in clients who have had a myocardial infarction. CPK-BB is elevated in clients with brain damage, and CPK-MM is elevated in clients with skeletal muscle damage. CPK-MI, mentioned in the rationale, does not exist, making it an incorrect choice.
Which of the following statements by a client with gastroesophageal reflux disease (GERD) indicates adequate understanding?
- A. "I should eat right before bedtime."?
- B. "I should eat large meals."?
- C. "I should sit up after eating."?
- D. "I should lie flat after eating."?
Correct Answer: C
Rationale: The correct statement for a client with GERD is, 'I should sit up after eating.' This helps prevent reflux by keeping the stomach contents down. Choice A is incorrect as eating right before bedtime can exacerbate GERD symptoms by increasing the likelihood of reflux during the night. Choice B is incorrect because consuming large meals can lead to increased stomach pressure and worsen reflux symptoms. Choice D is incorrect because lying flat after eating can promote reflux due to gravity assisting the flow of stomach contents into the esophagus, worsening GERD.