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Author Question: A patient has developed muscarinic antagonist toxicity from ingestion of an unknown chemical. The ... (Read 63 times)

mp14

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on: Jul 23, 2018
A patient has developed muscarinic antagonist toxicity from ingestion of an unknown chemical. The nurse should prepare to administer which medication?
 
  a. Atropine (Sal-Tropine) IV
  b. Physostigmine (Antilirium)
  c. An acetylcholinesteras e activator
  d. Pseudoephedrine (Ephedrine)

Question 2

A prescriber has ordered bethanechol (Urecholine) for a postoperative patient who has urinary retention.
 
  The nurse reviews the patient's chart before giving the drug. Which part of the patient's history would be a contraindication to using this drug?
  a. Asthma as a child
  b. Gastroesophageal reflux
  c. Hypertension
  d. Hypothyroidism


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elizabethrperez

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Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: B
Physostigmine is indicated for muscarinic antagonist toxicity. Atropine is a drying agent and would only complicate the drying action that arises from the muscarinic antagonist. An acetylcholinesteras e activator would only contribute to dryness that arises from the muscarinic antagonist. Ephedrine is not indicated for muscarinic antagonist toxicity.

Answer to Question 2

ANS: A
Bethanechol is contraindicated in patients with active or latent asthma, because activation of muscarinic receptors in the lungs causes bronchoconstriction . It increases the tone and motility of the gastrointestinal (GI) tract and is not contraindicated in patients with reflux. It causes vasodilation and would actually lower blood pressure in a hypertensive patient. It causes dysrhythmias in hyperthyroid patients.


mp14

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Reply 2 on: Jul 23, 2018
YES! Correct, THANKS for helping me on my review

anyusername12131

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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Excessive alcohol use costs the country approximately $235 billion every year.

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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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