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.
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Correct Answer is A
Explanation
A. Regular engagement in meditation for 10 minutes daily indicates effective learning and practice of meditation techniques, as consistency is key to developing this skill.
B. Breathing quickly is not indicative of effective meditation, as the practice typically involves slow, deep breathing to promote relaxation.
C. While lying on the floor can be a comfortable position for some, it does not specifically indicate effective learning in meditation, as it depends on the individual’s preferences.
D. Focusing on a particular image can be a part of meditation but does not solely demonstrate effective learning without the context of regular practice and the correct breathing techniques.
Correct Answer is C
Explanation
A. Atelectasis can occur in anyone, not just those with chronic conditions; this statement is incorrect.
B. While hyperventilation may temporarily open alveoli, it is not a preventative measure for atelectasis.
C. Breathing exercises, such as incentive spirometry or deep breathing, are effective in preventing atelectasis by promoting lung expansion and alveolar ventilation.
D. A chest tube is typically used to remove air or fluid from the pleural space, not for the treatment of atelectasis, which is often managed with respiratory therapies.