Correct Answer: B

Rationale: A high fever, such as 103 degrees Fahrenheit (39.5 degrees Celsius), in a client with infective endocarditis indicates that the infection may not be responding to the antibiotics and requires immediate medical evaluation. Nausea and vomiting, diffuse macular rash, and muscle tenderness are not typically associated with the ineffectiveness of antibiotic therapy in infective endocarditis.

Correct Answer: A

Rationale: Auscultation of breath sounds is the highest priority assessment in a client with a history of asthma experiencing difficulty breathing. It helps the nurse evaluate the severity of the asthma exacerbation by listening for wheezing, crackles, or decreased breath sounds. This assessment guides treatment decisions, such as administering bronchodilators or oxygen therapy. Measurement of peak expiratory flow, although important in assessing asthma severity, may not be feasible in an emergency situation where immediate intervention is needed. Observation of accessory muscle use and assessment of skin color are also important assessments in asthma exacerbation, but auscultation of breath sounds takes precedence in determining the need for urgent interventions.

Correct Answer: A

Rationale: The correct answer is A because gastric lavage is a priority for infants with botulism to remove toxins from the stomach. Botulism is a serious condition caused by a toxin produced by Clostridium botulinum bacteria. Gastric lavage helps in removing the toxin from the stomach. Choice B is incorrect because gastric lavage is not typically indicated for ibuprofen ingestion. Choice C is incorrect because gastric lavage is not the first-line treatment for ingesting powdered plant food. Choice D is incorrect because gastric lavage is not routinely performed for vitamin ingestion.

Correct Answer: B

Rationale: The observation of the client's entire body turning a bright red color during an excretory urogram indicates a severe reaction to the dye, which is a significant complication. This reaction is likely due to an allergic response and requires immediate medical attention. The other choices do not signify a severe complication: choice A could be a normal taste sensation related to the procedure, choice C may indicate a mild reaction, and choice D could be a common side effect of nausea without indicating a severe complication requiring immediate intervention.

Correct Answer: B

Rationale: The correct answer is B, Chvostek's sign. This is a classic sign of hypocalcemia, which can occur after a thyroidectomy due to injury or removal of the parathyroid glands. Hypocalcemia can lead to serious complications like tetany and laryngospasm, necessitating immediate attention. Assessing Chvostek's sign helps in early identification and management of hypocalcemia. Choices A, C, and D are not the priority in this situation. While assessing the calcium level is important for diagnosing hypocalcemia, the immediate concern is to identify clinical signs like Chvostek's sign, which indicate acute hypocalcemia. Trousseau's sign is also related to hypocalcemia but is not the most critical sign to assess first. Serum potassium level, although important for overall electrolyte balance, is not directly related to the client's current symptoms of tingling in the fingers and around the mouth.