A nurse working in an emergency department is assessing a client who is experiencing chest pain that began 6 hr ago. Which of the following findings indicates that the client is having a myocardial Infarction?

Decreased creatine kinase-MB

Decrease in respiratory rate

ST segment depression

Increased troponin I

Answer and Explanation

The Correct Answer is D

Rationale:

A. Decreased creatine kinase-MB: CK-MB is a cardiac enzyme that rises within 4–6 hours of myocardial infarction and peaks around 24 hours. A decrease in CK-MB would not indicate acute myocardial injury and is not a diagnostic marker in this case.

B. Decrease in respiratory rate: A lower respiratory rate is not a typical or reliable indicator of myocardial infarction. Clients experiencing an MI are more likely to show signs of dyspnea, anxiety, or increased respiratory effort due to pain or decreased oxygenation.

C. ST segment depression: ST segment depression may indicate myocardial ischemia or a non-ST elevation myocardial infarction (NSTEMI), but it is less specific than biomarkers like troponin. It may also appear in other conditions such as angina or electrolyte imbalances.

D. Increased troponin I: Troponin I is a highly specific and sensitive cardiac biomarker that rises within 3–6 hours of myocardial injury. An elevated troponin I level 6 hours after the onset of chest pain strongly supports the diagnosis of myocardial infarction.

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Correct Answer is C

Explanation

Rationale:

A. Instruct the parent to give 5 mcg of vitamin D daily: While vitamin D supplementation is recommended for breastfed infants, this advice does not address the inappropriate introduction of cow’s milk, which can cause complications such as intestinal bleeding and iron deficiency in infants under 12 months.

B. Instruct the parent to give the infant water every 3 hr between feedings: Offering water to infants under 6 months is discouraged, as it can displace essential nutrients from breast milk or formula and increase the risk of water intoxication due to immature kidneys.

C. Advise the parent to avoid giving cow's milk to the infant prior to 1 year of age: Cow's milk is not suitable for infants under 12 months because it lacks adequate iron and nutrients, and its high protein content can irritate the immature kidneys and intestinal lining.

D. Recommend the parent mix the milk with rice cereal for feedings: Mixing cow’s milk with cereal does not resolve its nutritional inadequacy or potential risks. Introducing solids and allergenic foods should follow developmental readiness and established pediatric guidelines.

A. "Client in room 303 is requesting snacks between meals." B. "Client in room 304 has a laptop that they use for relaxation." C. "Client in room 302 has multiple visitors." D. "Client in room 301 is in the cardiac catheterization lab."

Correct Answer is D

Explanation

Rationale:

A. "Client in room 303 is requesting snacks between meals.": While client preferences are important, this information is non-urgent and can be communicated through care plans or written notes. It does not directly impact immediate nursing care during a shift change.

B. "Client in room 304 has a laptop that they use for relaxation.": This is personal, non-clinical information and is not essential for safe and effective handoff communication. Shift reports should focus on medical status, treatment plans, or immediate needs.

C. "Client in room 302 has multiple visitors.": Visitor status is not a priority item in a shift report unless it directly affects client care, safety, or monitoring. Including such information can distract from more clinically significant updates.

D. "Client in room 301 is in the cardiac catheterization lab.": This is critical information because it reflects a current procedure, potential risks, and possible post-procedure care needs. Reporting this ensures continuity of monitoring and prioritization.

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A nurse working in an emergency department is assessing a client who is experiencing chest pain that began 6 hr ago. Which of the following findings indicates that the client is having a myocardial Infarction?

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