A client with angina pectoris reports chest pain and is receiving oxygen therapy. The client asks the nurse about the purpose of oxygen administration. How should the nurse respond?
"Oxygen reduces chest pain by dilating your coronary arteries."
"Oxygen helps your heart pump blood more effectively."
"Oxygen increases your oxygen levels and relieves shortness of breath."
"Oxygen prevents further clot formation in your coronary arteries."
The Correct Answer is C
A: Oxygen does not directly dilate coronary arteries; medications such as nitrates are responsible for this effect.
B: While oxygen aids in metabolic processes, it does not directly affect the heart's pumping efficiency in the context of angina pectoris.
C: Oxygen therapy increases the oxygen saturation of the blood, which can help alleviate symptoms like shortness of breath and chest pain associated with angina by ensuring that the heart muscle receives sufficient oxygen to function properly.
D: Oxygen therapy is not a treatment for preventing clot formation; this is typically managed with anticoagulant medications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) This choice is incorrect because administering sublingual nitroglycerin is an important intervention to relieve chest pain in clients with angina pectoris, but obtaining a 12-lead ECG is the priority in a client suspected of experiencing an MI. The ECG helps in diagnosing MI and determining the appropriate treatment plan.
B) This choice is correct. The priority nursing intervention during the initial assessment of a client with suspected MI is to obtain a 12-lead ECG. The ECG provides crucial information about cardiac electrical activity and helps identify ST-segment elevation, indicating myocardial ischemia or injury.
C) This choice is incorrect because initiating intravenous (IV) access is an essential step in the management of an MI, but it is not the priority over obtaining a 12-lead ECG.
D) This choice is incorrect because administering aspirin is an essential intervention during an MI to help reduce platelet aggregation and prevent further clot formation. However, obtaining a 12-lead ECG takes precedence in the initial assessment to confirm the diagnosis and guide further interventions.
Correct Answer is D
Explanation
A: This choice is incorrect because nitroglycerin tablets should not be swallowed immediately; they are designed to dissolve under the tongue to provide rapid relief from chest pain.
B: This choice is incorrect as nitroglycerin tablets do not need to be taken with water; they should dissolve sublingually and taking them with water could dilute the medication, reducing its effectiveness.
C: This choice is incorrect because crushing the tablet and mixing it with food would delay and potentially reduce the absorption of the medication, which is critical during an episode of angina.
D: This is the correct instruction because nitroglycerin tablets are very sensitive to light and moisture, which can reduce their effectiveness. Keeping them in their original bottle ensures they are protected from environmental factors that could degrade the medication.
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