A nurse in the recovery room is assessing a client who has a new chest tube. The nurse finds that the water seal is no longer tidaling. The nurse should identify the finding as resulting from which of the following?
An air leak noted at the insertion site.
The tubing may be kinked.
Water needs to be added to the suction-control chamber.
The suction is set too low.
The Correct Answer is B
A. An air leak noted at the insertion site: An air leak can cause continuous bubbling in the water seal chamber, but it does not prevent tidaling. Tidaling reflects intrathoracic pressure changes with respiration, so an air leak alone does not explain the absence of tidaling.
B. The tubing may be kinked: Tidaling stops when there is an obstruction in the chest tube system, such as a kinked or clamped tube. This prevents the normal movement of fluid in the water seal chamber that corresponds with the client’s respiratory cycle, making it the most likely cause of absent tidaling.
C. Water needs to be added to the suction-control chamber: Low water in the suction-control chamber affects the amount of suction delivered, not tidaling in the water seal chamber. The water seal chamber relies on the client’s respiration to show fluctuations, so adding water to suction does not restore tidaling.
D. The suction is set too low: Suction settings influence the rate of fluid evacuation and bubbling, but they do not control tidaling. Absence of tidaling usually indicates a mechanical obstruction rather than a suction problem.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D","E"]
Explanation
A. Inform the client that they will need to fast 4hr prior to the procedure: Fasting is generally not required for a thoracentesis unless moderate sedation or general anesthesia is planned. Routine thoracentesis is often performed with local anesthesia only, so strict fasting is unnecessary.
B. Explain that a needle will be inserted in the pleural space to withdraw fluid: Providing a clear explanation of the procedure helps reduce anxiety and ensures the client understands what to expect. Educating about needle insertion and fluid removal is essential for informed cooperation.
C. Obtain informed consent from the client: Informed consent is required for thoracentesis because it is an invasive procedure with risks such as pneumothorax, bleeding, and infection. The nurse must verify that consent is signed before proceeding.
D. Inform the client they will be sedated for the procedure: Many thoracenteses use local anesthesia with minimal sedation. Informing the client about sedation ensures understanding of the procedure and preparation for comfort measures, especially if moderate sedation is used.
E. Place the client in an upright position leaning over a bedside table: Proper positioning facilitates optimal access to the pleural space and improves patient safety and comfort. This upright posture with arms resting on a table is standard practice for thoracentesis.
F. Administer a cough suppressant to the client prior to the procedure: Suppressing cough is not routinely indicated before thoracentesis. The client may need to cough or take deep breaths during or after the procedure to prevent complications, so routine cough suppression is not recommended.
Correct Answer is D
Explanation
A. Irrigate the client's tube with 10 ml of cool water every hr: Flushing an NG tube is appropriate to maintain patency, but 10 mL is often insufficient for continuous feedings, and routine irrigation “every hr” is not standard practice. Flushing should follow facility protocol and be based on feeding type, residuals, or signs of tube blockage.
B. Elevate the head of the client's bed to a 15 angle: Elevating the head of the bed only 15 degrees is insufficient to reduce the risk of aspiration during continuous enteral feeding. Evidence-based practice recommends elevating the head of the bed to 30–45 degrees to promote gastric emptying and prevent reflux or aspiration.
C. Replace the client's feeding bag every 72 hr: Feeding bags for continuous enteral feedings should be replaced more frequently, typically every 24 hours, to reduce bacterial contamination and the risk of infection. Waiting 72 hours increases the likelihood of microbial growth and potential sepsis.
D. Check the client's gastric residual every 4 hr: Monitoring gastric residuals every 4 hours is an important action to assess tolerance to continuous tube feeding. High residuals can indicate delayed gastric emptying or intolerance, guiding decisions to hold or adjust the feeding, preventing aspiration and other complications.
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