A nurse teaches a patient about atelectasis. Which statement by the patient indicates an understanding of atelectasis?
"Atelectasis affects only those with chronic conditions such as emphysema."
"Hyperventilation will open up my alveoli, preventing atelectasis."
"It is important to do breathing exercises every hour to prevent atelectasis."
"If I develop atelectasis, I will need a chest tube to drain excess fluid."
The Correct Answer is C
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.
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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.
Correct Answer is B
Explanation
A. Ventricular filling time and diastolic filling time are not formulas used to calculate cardiac output; they pertain to the phases of the cardiac cycle.
B. Cardiac output is calculated by multiplying stroke volume (the amount of blood ejected by the heart with each beat) by heart rate (the number of beats per minute). This formula accurately reflects the overall volume of blood the heart pumps in one minute.
C. Myocardial contractility and myocardial blood flow are important factors in cardiac function but do not directly provide a formula for calculating cardiac output.
D. Preload and afterload are factors that affect stroke volume but are not used to calculate cardiac output directly.