A patient has experienced a myocardial infarction. On which primary blood vessel will the nurse focus care to reduce ischemia?
Superior vena cava
Carotid artery
Pulmonary artery
Coronary artery
The Correct Answer is D
A. The superior vena cava is responsible for returning deoxygenated blood from the upper body to the heart and is not directly involved in myocardial ischemia.
B. The carotid artery supplies blood to the brain and is not the primary focus in the context of myocardial infarction.
C. The pulmonary artery carries deoxygenated blood from the heart to the lungs and is not involved in coronary circulation.
D. The coronary arteries supply blood to the heart muscle itself. Ischemia during a myocardial infarction occurs when these arteries are blocked or narrowed, leading to a lack of blood flow and oxygen to the heart tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. An air vent allowing bubbles into the blood would be unsafe and can cause air embolism, so this option is incorrect.
B. Using tubing with a filter is standard practice for blood transfusions to prevent clots and debris from entering the patient’s bloodstream, making this the correct choice.
C. Mixing additional electrolytes into the blood is not a standard practice during transfusions, as it can cause complications; thus, this option is not appropriate.
D. Two-way valves are not typically used in blood transfusion setups; the goal is to keep the blood product separate from other fluids unless specifically indicated.
Correct Answer is C
Explanation
A. Discontinuing pain medication may not be appropriate, as it can lead to inadequate pain management for the patient. Pain management is crucial for terminally ill patients.
B. While abdominal massage may help relieve mild constipation, it is not a reliable primary intervention for more severe constipation caused by medication.
C. Laxatives are commonly prescribed for constipation related to pain medication and are an effective method to promote bowel movements, making this the best choice.
D. Administering enemas twice daily can be excessive and may cause discomfort or lead to dependency, making this option less favorable than using laxatives.
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