A client is experiencing a cholinergic crisis after being administered pyridostigmine IV. The nurse should administer which of the following reversal agents?
Galantamine
Physostigmine
Flumazenil
Atropine
The Correct Answer is D
A. Galantamine is a reversible acetylcholinesterase inhibitor and would not be effective in treating a cholinergic crisis.
B. Physostigmine is also a reversible acetylcholinesterase inhibitor and would not be suitable for reversing a cholinergic crisis.
C. Flumazenil is a benzodiazepine antagonist used to reverse benzodiazepine effects, not cholinergic crises.
D. Atropine is an anticholinergic medication that is effective in reversing the effects of excessive acetylcholine during a cholinergic crisis, making it the appropriate choice in this situation.
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Correct Answer is C
Explanation
A. Macrolides, such as azithromycin and erythromycin, have a low cross-reactivity with penicillin and are typically safe alternatives for those with penicillin allergies.
B. Sulfonamides are not structurally similar to penicillins and generally do not have cross-sensitivity issues with penicillin allergies.
C. Cephalosporins share a similar beta-lactam structure to penicillins, which can result in cross-sensitivity in some individuals with a penicillin allergy. For this reason, they should be avoided or used with caution in these clients.
D. Tetracyclines have a different structure from penicillins and are usually safe for clients with penicillin allergies.
Correct Answer is C
Explanation
A. Risperidone is an atypical antipsychotic primarily used to treat schizophrenia and bipolar disorder, not first-line treatment for depression.
B. Haloperidol is a typical antipsychotic used mainly for acute psychosis and agitation, not for treating depression.
C. Paroxetine is a selective serotonin reuptake inhibitor (SSRI) that is widely recognized as a first-line treatment for depression due to its efficacy and relatively favorable side effect profile.
D. Clozapine is an atypical antipsychotic reserved for treatment-resistant schizophrenia and is not indicated for the treatment of depression.