Promethazine Overview and Mechanisms
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Questions and Answers

What is the name of the drug?

Promethacon

What is the official or generic name of Promethacon?

promethazine

What are the pharmacological and therapeutic classifications of Promethazine?

Pharmacological: phenothiazines; Therapeutic: antiemetic, antihistamine, sedative, hypnotic

What is the chief action of Promethazine?

<p>Blocks effects of histamine; Inhibits chemoreceptor trigger zone; Alters effects of dopamine; CNS depression.</p> Signup and view all the answers

What are the primary uses of Promethazine?

<p>-Treatment of allergic conditions and motion sickness; -Preoperative sedation; -Treatment and prevention of nausea and vomiting; -Adjunct to anesthesia and analgesia.</p> Signup and view all the answers

What are the usual dosage methods for Promethazine?

<p>PO, IM, IV, Rectal</p> Signup and view all the answers

What are common toxic manifestations of Promethazine?

<p>Confusion, disorientation, sedation</p> Signup and view all the answers

What is the life-threatening condition associated with Promethazine?

<p>Neuroleptic malignant syndrome</p> Signup and view all the answers

What is the pregnancy classification of Promethazine?

<p>Category C</p> Signup and view all the answers

What patient teaching should be provided regarding Promethazine?

<p>May cause drowsiness; photosensitivity; dizziness; move slowly when sitting or standing; maintain good oral hygiene; avoid alcohol.</p> Signup and view all the answers

Study Notes

Promethazine Overview

  • Generic Name: Promethazine
  • Pharmacological Class: Phenothiazines
  • Therapeutic Class: Antiemetic, antihistamine, sedative, hypnotic

Mechanism of Action

  • Blocks histamine effects, providing relief in allergic reactions
  • Inhibits the chemoreceptor trigger zone in the medulla, reducing nausea and vomiting
  • Alters dopamine effects in the central nervous system (CNS)
  • Exhibits significant anticholinergic activity
  • Causes CNS depression by decreasing stimulation of the reticular system

Therapeutic Effects

  • Alleviates symptoms from excess histamine and allergic reactions
  • Diminishes nausea and vomiting
  • Induces sedation

Indications for Use

  • Treats various allergic conditions and motion sickness
  • Provides preoperative sedation
  • Prevents and treats nausea and vomiting
  • Serves as an adjunct in anesthesia and analgesia

Routes of Administration

  • Administered orally (PO), intramuscularly (IM), intravenously (IV), or rectally

Toxicity and Side Effects

  • Common Side Effects: Confusion, disorientation, sedation
  • Life-Threatening Risks: Neuroleptic malignant syndrome

Safety Classifications

  • Pregnancy Category: C
  • High Alert Medication: High risk for significant patient harm if misused

Patient Education

  • May cause drowsiness; exercise caution
  • Photosensitivity may occur
  • Advise patients to rise slowly from sitting or standing positions
  • Recommend frequent mouth rinsing and maintaining good oral hygiene
  • Suggest using sugarless gum or candy
  • Avoid alcohol consumption
  • Notify healthcare team of sore throat, jaundice, fever, or uncontrolled movements

Nursing Considerations

  • Ongoing patient assessment required

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Description

This quiz explores the pharmacological properties of Promethazine, including its mechanisms of action, therapeutic effects, and clinical indications. You will learn about its uses in treating allergic reactions and nausea, as well as its role in sedation. Understand how this medication works in the body through various routes of administration.

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