Which clinical manifestation is most reflective of an early response to hypoxia?

Restlessness

Cyanosis

Apnea

Bradycardia

Answer and Explanation

The Correct Answer is A

Choice A Reason:

Restlessness is often one of the earliest signs of hypoxia. When the body experiences low oxygen levels, the brain is one of the first organs to be affected. This can lead to symptoms such as anxiety, agitation, and restlessness as the brain struggles to function properly without adequate oxygen. These symptoms occur because the body is trying to compensate for the lack of oxygen by increasing respiratory and heart rates, which can make a person feel uneasy or restless.

Choice B Reason:

Cyanosis refers to a bluish discoloration of the skin and mucous membranes due to low oxygen levels in the blood. While cyanosis is a significant indicator of hypoxia, it is typically a later sign. By the time cyanosis is visible, hypoxia has usually been present for some time, and oxygen levels have been critically low. Therefore, it is not the earliest clinical manifestation of hypoxia.

Choice C Reason:

Apnea is the absence of breathing. This is a severe and late sign of hypoxia. When a person stops breathing, it indicates that the body has been deprived of oxygen for an extended period, leading to critical conditions. Apnea is a medical emergency and requires immediate intervention, but it is not an early sign of hypoxia.

Choice D Reason:

Bradycardia is a slower than normal heart rate. Like apnea, bradycardia is a late sign of hypoxia. Initially, the body responds to low oxygen levels by increasing the heart rate (tachycardia) to pump more oxygenated blood to tissues. Bradycardia occurs when the body can no longer compensate, and the heart rate slows down, indicating severe hypoxia and impending failure of the cardiovascular system.

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Correct Answer is A

Explanation

Choice A reason: Positioning the collection device below the level of the chest is crucial to ensure proper drainage of air or fluid from the pleural space. This positioning uses gravity to facilitate drainage and prevent backflow into the pleural cavity, which could lead to complications such as pneumothorax or pleural effusion. The collection device should always be kept below the chest level to maintain effective drainage.

Choice B reason: Clamping the chest tube is generally not recommended unless specifically ordered by a physician or during certain procedures. Clamping can lead to a buildup of air or fluid in the pleural space, increasing the risk of tension pneumothorax. It is essential to keep the chest tube unclamped to allow continuous drainage and prevent complications.

Choice C reason: Applying an occlusive dressing over the chest tube site is necessary to prevent air from entering the pleural space and to secure the tube. However, this is not the primary action related to the positioning of the collection device. The occlusive dressing helps maintain the integrity of the chest tube insertion site and prevents infection.

Choice D reason: Emptying the chest tube collection chamber every shift is not a standard practice. The collection chamber should be monitored and emptied as needed based on the volume of drainage and the specific protocols of the healthcare facility. Regular monitoring is essential, but unnecessary emptying can disrupt the closed system and increase the risk of infection.

A. Urinary tract infection B. Deep vein thrombosis C. Constipation D. Atelectasis

Correct Answer is D

Explanation

Choice A Reason:

Urinary tract infections (UTIs) are typically caused by bacteria entering the urinary tract. While strict bed rest can increase the risk of UTIs due to factors like catheter use and reduced mobility, the use of an incentive spirometer does not directly prevent UTIs. Instead, preventing UTIs involves maintaining good hygiene, ensuring adequate fluid intake, and, if necessary, using catheters properly.

Choice B Reason:

Deep vein thrombosis (DVT) is a condition where blood clots form in the deep veins, usually in the legs. This can occur due to prolonged immobility, such as strict bed rest after surgery. Preventing DVT involves measures like using compression stockings, administering anticoagulant medications, and encouraging leg exercises. An incentive spirometer, which is used to improve lung function, does not directly prevent DVT.

Choice C Reason:

Constipation is a common issue for patients on bed rest due to reduced physical activity and changes in diet. Preventing constipation involves ensuring adequate hydration, providing a high-fiber diet, and encouraging as much physical activity as possible. The use of an incentive spirometer, which focuses on respiratory function, does not directly address constipation.

Choice D Reason:

Atelectasis is a condition where the alveoli in the lungs collapse, leading to reduced or absent breath sounds in the affected areas. This is a common postoperative complication, especially in patients on strict bed rest, due to shallow breathing and reduced lung expansion. The use of an incentive spirometer encourages deep breathing and helps to keep the alveoli open, thereby preventing atelectasis. This is why the incentive spirometer is an essential tool for postoperative respiratory care.

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Which clinical manifestation is most reflective of an early response to hypoxia?

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client with a chest tube. Which action should the nurse take?

Correct Answer is A

Explanation

A nurse is caring for a client who will be placed on strict bed rest after surgery. The nurse should educate the client on the use of an incentive spirometer. The use of an incentive spirometer would prevent which postoperative complication?

Correct Answer is D

Explanation

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