What is the primary purpose of the suction control chamber in a chest drainage system?
To prevent atmospheric air from entering the pleural space
To regulate the amount of suction applied to the chest tube
To collect drainage from the pleural space
To indicate the presence of an air leak
The Correct Answer is B
A. To prevent atmospheric air from entering the pleural space: Preventing air entry is primarily the role of the water seal chamber, which allows one-way flow of air out of the pleural space while preventing backflow.
B. To regulate the amount of suction applied to the chest tube: The suction control chamber determines how much negative pressure is transmitted to the pleural space. The level of water in this chamber controls the suction strength, helping maintain consistent and safe suction without causing lung tissue damage.
C. To collect drainage from the pleural space: Collecting fluid or blood is the function of the collection chamber, not the suction control chamber. The suction control chamber does not store drainage but regulates pressure.
D. To indicate the presence of an air leak: Air leaks are identified by observing bubbling in the water seal chamber, not the suction control chamber. Continuous or intermittent bubbling in the water seal indicates an air leak along the drainage system or from the pleural space.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The patient has a productive, consistent cough: A productive cough helps clear secretions and maintain airway patency, which promotes effective ventilation. This would likely help lower CO2 levels rather than contribute to hypercapnia.
B. The patient has a high pain level: Pain can increase respiratory rate and depth, which generally improves CO2 elimination. While severe pain may limit deep breaths, it is less likely to cause significant hypercapnia on its own.
C. The patient is taking high doses of Morphine: Morphine and other opioids depress the central respiratory drive, reducing respiratory rate and tidal volume. This hypoventilation can lead to retention of CO2, resulting in hypercapnia.
D. The patient has been suctioned once every shift: Occasional suctioning helps remove secretions and maintain airway patency. Suctioning once per shift is unlikely to cause CO2 retention and does not contribute significantly to hypercapnia.
Correct Answer is B
Explanation
A. "I will keep my oxygen tanks away from heat sources": Heat and open flames can pose a significant fire hazard around oxygen, so keeping tanks away from heat sources is essential.
B. "I can smoke as long as I turn off my oxygen first.": Smoking around oxygen is extremely dangerous due to the risk of fire and explosion. Oxygen supports combustion even when the tank is off, so this statement indicates a need for further education on fire safety.
C. "I need to post 'No Smoking' signs in my home.": Posting no-smoking signs is an appropriate safety measure to alert others and reduce the risk of accidental ignition near oxygen sources.
D. "I should store my oxygen tanks upright to prevent tipping": Storing oxygen tanks upright is correct and prevents accidental falls, which could damage the tank or valve.
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