Correct Answer: C

Rationale: Suprasternal retraction during inhalation indicates the use of accessory muscles and difficulty in moving air due to airway narrowing, supported by bilateral wheezing and decreased pulse oxygen saturation. This client needs immediate intervention as their asthma is not responding to the medication. Administering oxygen to maintain saturations above 94% is crucial to ensure adequate oxygenation. While administering a rescue inhaler could also be necessary, oxygen therapy takes priority in this situation.

Correct Answer: B

Rationale: A low platelet count, as seen in choice B, is concerning as it could indicate heparin-induced thrombocytopenia, a serious side effect of heparin therapy. Heparin-induced thrombocytopenia can lead to an increased risk of blood clotting, potentially causing severe complications. Monitoring platelet counts is crucial during heparin therapy to promptly identify and manage this adverse effect.

Correct Answer: C

Rationale: Pursed-lip breathing is a common manifestation in clients with emphysema. It helps to increase the duration of exhalation and reduce air trapping, aiding in the management of the condition. Decreased chest expansion and bradypnea are not typically associated with emphysema. While cyanosis can occur in severe cases, pursed-lip breathing is a more specific and commonly observed sign of emphysema.

Correct Answer: C

Rationale: Essential hypertension, also known as primary or idiopathic hypertension, is the most common type of hypertension. It has no specific underlying cause such as an associated disease process. In contrast, hypertension that is due to another disease is referred to as secondary hypertension. Malignant hypertension is a severe and life-threatening form of hypertension characterized by rapidly progressive blood pressure elevation and potential end-organ damage.

Correct Answer: A

Rationale: When a client is prescribed nicotine replacement therapy, it is crucial to emphasize that smoking while using this therapy can increase the risk of a stroke. Smoking while on nicotine replacement therapy can lead to excessive nicotine levels in the body, elevating cardiovascular risks. Therefore, the nurse should educate the client on the importance of avoiding smoking while utilizing this medication. Choices B, C, and D are not relevant to the specific teaching required for a client on nicotine replacement therapy.