A nurse is collecting data from a client before administering a hepatitis B immunization. The nurse should withhold the immunization if the client is allergic to which of the following substances?
Baker's yeast
Nuts
Wheat
Egg yolk
The Correct Answer is A
A. Baker's yeast. The hepatitis B vaccine is contraindicated in individuals with a severe allergy to baker’s yeast. This is because the vaccine is produced using Saccharomyces cerevisiae (baker’s yeast), which can trigger an allergic reaction in susceptible individuals. Symptoms of a yeast allergy may include rash, difficulty breathing, and anaphylaxis, requiring the vaccine to be withheld and an alternative plan considered.
B. Nuts. Nut allergies are not related to the hepatitis B vaccine, as it does not contain nut-derived ingredients. While nut allergies can be severe and cause anaphylaxis, they do not pose a specific risk in the administration of this vaccine. Therefore, the presence of a nut allergy alone does not require withholding the immunization.
C. Wheat. A wheat allergy is not a contraindication for the hepatitis B vaccine. Wheat allergies primarily cause reactions to gluten-containing foods or products but do not have any connection to the components used in the production of the vaccine. The vaccine can be safely administered to individuals with wheat allergies.
D. Egg yolk. While some vaccines, such as the influenza vaccine, may be derived from egg proteins, the hepatitis B vaccine is not produced using egg-based components. An allergy to egg yolk does not pose a risk for adverse reactions to this vaccine, so it should not be withheld in individuals with an egg allergy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. "If my pain is not relieved in 20 minutes, I will take a second tablet." Sublingual nitroglycerin should be taken at 5-minute intervals, up to a maximum of three doses within 15 minutes. If chest pain persists after three doses, emergency medical assistance is necessary, as this may indicate a myocardial infarction. Delaying a second dose for 20 minutes may lead to worsening of the condition and delay appropriate treatment.
B. "I will keep my tablets on a shelf in the bathroom." Nitroglycerin is highly sensitive to heat, light, and moisture, which can cause it to lose potency. Storing it in the bathroom, where temperature and humidity fluctuate, can degrade the medication. It should be kept in its original dark glass container with the lid tightly closed and stored in a cool, dry place away from moisture and heat sources.
C. "I should be sure to swallow the tablet whole." Sublingual nitroglycerin is designed to dissolve under the tongue for rapid absorption into the bloodstream. Swallowing it whole delays its effect because it would need to pass through the digestive system before being absorbed, reducing its ability to quickly relieve angina. Clients should be instructed to place the tablet under the tongue and allow it to dissolve completely without chewing or swallowing.
D. “If my mouth is dry, I will take a sip of water before I take the tablet.” A dry mouth can slow the dissolution of the sublingual tablet, delaying its absorption and effectiveness. Taking a sip of water before administration ensures the tablet dissolves properly under the tongue, allowing for rapid relief of angina symptoms. However, clients should avoid drinking excessive amounts of water that might wash the tablet down before it dissolves.
Correct Answer is B
Explanation
A. Jaundice. Jaundice, or yellowing of the skin and eyes, is a sign of liver dysfunction and may indicate hepatotoxicity rather than an allergic reaction. Some medications can cause drug-induced liver injury (DILI), but jaundice is not a typical symptom of an immediate hypersensitivity reaction.
B. Urticaria. Urticaria (hives) is a classic allergic reaction that appears as raised, red, itchy welts on the skin. It occurs due to the release of histamine in response to an allergen, which increases capillary permeability and leads to swelling and itching. Urticaria may be accompanied by angioedema, respiratory distress, or anaphylaxis, requiring immediate intervention if severe.
C. Bradycardia. Bradycardia (slow heart rate) is not a typical manifestation of an allergic reaction. While anaphylaxis can cause hypotension and tachycardia due to systemic vasodilation, bradycardia is more commonly associated with beta-blockers, heart block, or vagal stimulation rather than an allergic response.
D. Hypertension. Allergic reactions, especially severe ones like anaphylaxis, typically cause vasodilation and hypotension, not hypertension. While stress or anxiety related to an allergic episode may lead to a temporary rise in blood pressure, persistent hypertension is not a direct sign of an allergic reaction.
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