A nurse is reviewing the laboratory data of a client who received 2 units of packed RBCs.

Which of the following laboratory findings should the nurse expect following the transfusion?

The correct answer is choice B. Determine the client’s knowledge about diaphragm use. This is the first action the nurse should take because it allows the nurse to assess the client’s readiness to learn, identify any knowledge gaps, and tailor the teaching to the client’s needs.

Some of the other choices are wrong because:

• Choice A. Supervise return demonstration of diaphragm use.

This is not the first action the nurse should take because it assumes that the client already knows how to use the diaphragm correctly and safely. The nurse should first teach the client how to insert, remove, and care for the diaphragm before asking for a return demonstration.

• Choice C. Document the client’s level of understanding about potential adverse effects.

This is not the first action the nurse should take because it is part of the evaluation phase of teaching, not the assessment phase. The nurse should first determine what the client knows and needs to know about diaphragm use and its possible risks and benefits.

• Choice D. Teach the client how to insert the diaphragm.

This is not the first action the nurse should take because it is part of the implementation phase of teaching, not the assessment phase. The nurse should first assess the client’s knowledge, motivation, and preferences before providing instruction on how to use the diaphragm.

A contraceptive diaphragm is a birth control device that prevents sperm from entering the uterus.

It is a small, soft silicone or rubber cup with a flexible rim that covers the cervix.

It is inserted into the vagina with spermicide before sex and is held in place by the pelvic muscles. It is a reusable type of contraception that women can use to avoid getting pregnant.

Answer:D. Troponin T test

Rationale:

A. Creatine kinase (CK) test: While creatine kinase isoenzymes, including CK-MB, can be elevated following myocardial infarction (MI), they are not specific to cardiac muscle injury. CK is found in various tissues throughout the body, so elevated levels can also indicate damage to skeletal muscle or brain tissue, among other sources.

B. Creatine kinase-myocardial band (CK-MB) test: CK-MB is a cardiac-specific isoform of creatine kinase, and elevated levels can indicate myocardial injury, particularly in the context of an acute MI. However, troponin T is a more sensitive and specific marker for myocardial injury.

C. Brain natriuretic peptide (BNP) test: Brain natriuretic peptide is primarily used in the diagnosis and management of heart failure. While elevated BNP levels can indicate heart muscle strain or stress, they are not specific markers for acute myocardial infarction or early injury to the cardiac muscle.

D. Troponin T test: This is the correct answer. Troponin T is a highly specific marker for cardiac muscle injury. Elevated troponin levels can be detected within hours of myocardial infarction and persist for several days, making it an essential tool in the diagnosis of acute coronary syndromes, including myocardial infarction. Troponin T is considered one of the gold standard biomarkers for detecting early injury to the cardiac muscle.