Nokea
A patient has been exposed to a nerve agent in a biochemical terrorist attack. This type of agent bonds with acetylcholinesterase, so that acetylcholine is not inactivated. What is the pathologic effect of this type of agent?
- A. Hyperstimulation of the nerve endings
- B. Temporary deactivation of the nerve endings
- C. Binding of the nerve endings
- D. Destruction of the nerve endings
Correct Answer: A
Rationale: Nerve agents cause continuous nerve hyperstimulation by preventing acetylcholine breakdown. Deactivation, binding, or destruction do not occur.
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A nurse is caring for patients exposed to a terrorist attack involving chemicals. The nurse has been advised that personal protective equipment must be worn in order to give the highest level of respiratory protection with a lesser level of skin and eye protection. What level protection is this considered?
- A. Level A
- B. Level B
- C. Level C
- D. Level D
Correct Answer: B
Rationale: Level B PPE provides maximal respiratory protection but less skin and eye coverage, suitable for chemical exposures where inhalation is the primary risk.
A patient is admitted to the ED who has been exposed to a nerve agent. The nurse should anticipate the STAT administration of what drug?
- A. Amyl nitrate
- B. Dimercaprol
- C. Erythromycin
- D. Atropine
Correct Answer: D
Rationale: Atropine counteracts nerve agent effects by blocking acetylcholine, alleviating hyperstimulation symptoms. Other drugs are for different agents or ineffective.
After a radiation exposure, a patient has been assessed and determined to be a possible survivor. Following the resolution of the patients initial symptoms, the care team should anticipate what event?
- A. A return to full health
- B. Internal bleeding
- C. A latent phase
- D. Massive tissue necrosis
Correct Answer: C
Rationale: A latent phase follows initial radiation symptoms in possible survivors, preceding potential recovery or worsening. Full health or severe outcomes are less likely.
The nurse is coordinating the care of victims who arrive at the ED after a radiation leak at a nearby nuclear plant. What would be the first intervention initiated when victims arrive at the hospital?
- A. Administer prophylactic antibiotics.
- B. Survey the victims using a radiation survey meter.
- C. Irrigate victims open wounds.
- D. Perform soap and water decontamination.
Correct Answer: B
Rationale: Initial radiation survey with a meter identifies contamination levels, guiding subsequent decontamination efforts. Other interventions follow this step.
The ED staff has been notified of the imminent arrival of a patient who has been exposed to chlorine. The nurse should anticipate the need to address what nursing diagnosis?
- A. Impaired gas exchange
- B. Decreased cardiac output
- C. Chronic pain
- D. Excess fluid volume
Correct Answer: A
Rationale: Chlorine, a pulmonary agent, disrupts alveolar-capillary oxygen transport, causing impaired gas exchange. Other diagnoses are secondary or unlikely.