the nurse should teach the parents of a 6 year old recently diagnosed with asthma that the symptom of acute episodes of asthma are due to which physio
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HESI CAT Exam

1. The parents of a 6-year-old recently diagnosed with asthma should be taught that the symptom of acute episodes of asthma is due to which physiological response?

Correct answer: A

Rationale: The correct answer is A: Inflammation of the mucous membrane & bronchospasm. Acute asthma episodes are primarily caused by inflammation of the airways and bronchospasm, which lead to airway obstruction. Increased mucus production and bronchoconstriction (Choice B) are part of the physiological responses in asthma but do not directly cause acute episodes. Allergic reactions and hyperventilation (Choice C) are related to asthma triggers and responses but are not the direct causes of acute episodes. Airway narrowing and decreased lung capacity (Choice D) are consequences of inflammation and bronchospasm but do not explain the physiological response leading to acute asthma episodes.

2. Assessment findings of a 3-hour-old newborn include: axillary temperature of 97.7°F, heart rate of 140 beats/minute with a soft murmur, and irregular respiratory rate at 42 breaths/min. Based on these findings, what action should the nurse implement?

Correct answer: C

Rationale: The correct action for the nurse to take in this scenario is to record the findings on the flow sheet. The newborn's axillary temperature, heart rate, and respiratory rate are within normal limits for a 3-hour-old newborn. Therefore, there is no immediate need for intervention or further assessment. Swaddling the infant in a warm blanket, placing a pulse oximeter on the heel, or checking the vital signs in 15 minutes are not necessary actions based on the normal assessment findings presented. These actions could potentially disrupt the newborn or lead to unnecessary interventions when the baby is stable.

3. The nurse assesses a client one hour after starting a transfusion of packed red blood cells and determines that there are no indications of a transfusion reaction. What instructions should the nurse provide the unlicensed assistive personnel (UAP) who is working with the nurse?

Correct answer: A

Rationale: The correct instruction for the UAP is to continue measuring the client’s vital signs every thirty minutes until the transfusion is complete. This is important because continuous monitoring of vital signs during the transfusion helps detect any delayed reactions promptly. Choice B is incorrect because maintaining client comfort is important but not the priority over monitoring vital signs. Choice C is incorrect as monitoring should be ongoing and not limited to a specific time frame. Choice D is incorrect as the UAP should monitor vital signs throughout the transfusion, not just at the end.

4. A male client admitted three days ago with respiratory failure is intubated and receiving 40% oxygen per facemask. Currently, his temperature is 99°F, capillary refill is less than 4 seconds, and respiratory effort is within normal limits. What outcome should the nurse evaluate to measure for successful extubation?

Correct answer: D

Rationale: Successful extubation is primarily measured by the client's ability to maintain an effective breathing pattern. This indicates that the client can adequately oxygenate and ventilate without the need for artificial airway support. Choices A, B, and C are important aspects of patient care but are not the primary outcomes to evaluate for successful extubation. Adequate tissue perfusion, freedom from injury, and prevention of infection are ongoing goals during the client's hospitalization but are not the immediate focus when considering extubation.

5. When caring for a client with acute respiratory distress syndrome (ARDS), why does the nurse elevate the head of the bed 30 degrees?

Correct answer: A

Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.

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