Which laboratory test would be the least effective in diagnosing a myocardial infarction?

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Question 1 of 5

Which laboratory test would be the least effective in diagnosing a myocardial infarction?

Correct Answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

Question 2 of 5

The licensed practical nurse assigned to the postpartum unit is preparing to administer Rhogam to a postpartum client. Which woman is not a candidate for RhoGam?

Correct Answer: D

Rationale: The mothers in answers A, B, and C all require RhoGam as they are Rh negative with an Rh-positive baby or have experienced a stillbirth delivery, making them candidates for RhoGam injection. The mother in answer D is the only one who does not require Rhogam because she is Rh negative with an Rh-negative baby, eliminating the need for RhoGam administration.

Question 3 of 5

The client is scheduled for a Tensilon test to check for Myasthenia Gravis. Which medication should be kept available during the test?

Correct Answer: A

Rationale: During a Tensilon test to check for Myasthenia Gravis, Atropine sulfate should be kept available as it is the antidote for Tensilon and is administered to manage cholinergic crises that may occur during the test. Atropine sulfate helps counteract the excessive stimulation of the parasympathetic nervous system caused by Tensilon. Furosemide (choice B) is a diuretic and not related to managing Tensilon-induced crises. Prostigmin (choice C) is used to treat Myasthenia Gravis itself, not for managing the effects of Tensilon. Promethazine (choice D) is an antiemetic and antianxiety agent, which is not necessary for a Tensilon test. Therefore, Atropine sulfate (choice A) is the correct medication to have available during a Tensilon test, making choices B, C, and D incorrect in this context.

Question 4 of 5

The client is scheduled for a pericentesis. Which instruction should be given to the client before the exam?

Correct Answer: B

Rationale: The client scheduled for a pericentesis should be instructed to empty the bladder to prevent the risk of bladder puncture when the needle is inserted. A pericentesis involves removing fluid from the peritoneal cavity. The client is typically positioned sitting up or leaning over a table, making answer A incorrect. During a pericentesis, the client is usually awake, so answer C is incorrect. Medications are not commonly injected into the peritoneal cavity during this procedure, making answer D incorrect. However, it's important to note that the administration of medications during the procedure could vary based on specific circumstances.

Question 5 of 5

To ensure safety while administering a nitroglycerine patch, what should the nurse do?

Correct Answer: A

Rationale: To protect herself, the nurse should wear gloves when applying a nitroglycerine patch or cream. Answer B is incorrect because shaving the area where the patch will be applied might abrade the skin, increasing the risk of irritation. Answer C is incorrect because washing with hot water can vasodilate the skin, potentially increasing the absorption of nitroglycerine. Nitroglycerine patches should be applied to areas above the waist, making answer D incorrect as applying it to the buttocks is not recommended.

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