During one circuit of blood from lungs to the tissue and back through the circulatory system the percentage of haemoglobin giving the oxygen is

Correct Answer: B

Rationale: The correct answer is B (25%). In the lungs, oxygen binds to hemoglobin to form oxyhemoglobin. This increases the oxygen saturation of hemoglobin to around 97-98%. As blood travels to the tissues, oxygen is released from hemoglobin to be used by the cells. By the time blood returns to the lungs, only about 25% of the hemoglobin is still carrying oxygen. This is known as the oxygen saturation curve. Choice A (50%) is incorrect because the percentage of hemoglobin carrying oxygen drops significantly as blood travels to the tissues. Choice C (75%) is incorrect because by the time blood returns to the lungs, more than 25% of the hemoglobin has already released its oxygen. Choice D (100%) is incorrect because not all hemoglobin molecules carry oxygen at the same time; it depends on the oxygen tension in the environment.

Correct Answer: C

Rationale: Rationale: The correct answer is C because the ability to swallow own secretions without drooling indicates that the client's airway is patent and functional post modUPPP, a priority goal for this procedure. This assessment finding ensures that the client can maintain a clear airway and prevent complications such as aspiration. Incorrect choices: A: Although pain control is important, it is not a priority assessment for this specific procedure. B: Absence of foul odor or red mucus membranes is not directly related to the airway patency or swallowing ability. D: While normal vital signs are reassuring, they do not directly indicate the success of the surgery in improving airway function.

Correct Answer: A

Rationale: The correct answer is A. For thoracentesis, the client typically sits at the edge of the bed, leaning forward with arms supported on a table or over their knees to spread out the intercostal spaces and stabilize the chest wall. B is incorrect because lying on the affected side would compress the area being accessed. C is wrong as lying flat reduces access to the pleural space. D is incorrect because raising the head is not standard positioning for this procedure.

Correct Answer: D

Rationale: The correct answer is D. Immediate recognition of respiratory distress is vital in clients with influenza, especially those at risk of complications. A (airborne precautions) is unnecessary unless the client is immunocompromised. B (complete bed rest) is outdated practice. C (oxygen administration) is only needed if hypoxia is present.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.