Identify the milky white solution which is widely used in OT for sedation and anesthesia based on the followi… - AIIMS Delhi NO- 2019

AIIMS Delhi NO- 2019

Pharmacology

Easy

Appeared in: AIIMS Delhi NO- 2019

Explanation

Propofol is a short-acting intravenous hypnotic agent used for the induction and maintenance of general anesthesia.
It is formulated as a lipid emulsion containing soybean oil and egg lecithin, which gives it a distinct milky-white appearance, as seen in the provided image.
This characteristic appearance has led to its common nickname, 'milk of amnesia'.
The question specifically asks for a 'milky white solution' used for sedation and anesthesia, which directly points to Propofol among the given options.

Option B: Midazolam is a benzodiazepine that appears as a clear, colorless to pale yellow solution. It is not milky white.
Option C: Ketamine is a dissociative anesthetic that is supplied as a clear, colorless solution. It does not have a milky appearance.
Option D: Rocuronium is a neuromuscular blocking agent (a muscle relaxant), not a primary sedative or anesthetic. It is also a clear, colorless solution.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of intravenous anesthetic agents based on physical properties and clinical use as background academic context rather than a clinical decision trigger.
Nurses administering Propofol must continuously monitor the patient's vital signs, especially blood pressure and respiratory rate, as hypotension and respiratory depression are common side effects.
Due to its lipid base, aseptic technique is crucial when handling Propofol to prevent bacterial contamination, which can lead to sepsis. Vials and tubing should be changed per hospital protocol (typically every 12 hours).
Be aware of Propofol Infusion Syndrome (PRIS), a rare but life-threatening complication associated with high-dose, long-term infusions, characterized by metabolic acidosis, rhabdomyolysis, and cardiac failure.

How to Approach the Question

First, carefully analyze the image provided. The most striking feature is the milky white color of the liquid in the syringe.
Next, read the question stem, which asks to identify a 'milky white solution' used for sedation and anesthesia. This confirms the importance of the color.
Systematically review the options provided, recalling the physical properties of each drug.
Recall or deduce that Propofol is famously known for its milky white appearance due to its lipid emulsion formulation.
Eliminate the other options. Midazolam, Ketamine, and Rocuronium are all clear solutions, making them incorrect.
Confirm the choice by matching the drug's function (sedation/anesthesia) with the question's context. Propofol fits perfectly.

Concept Tested & Keywords

Concept Tested: Identification of intravenous anesthetic agents based on physical properties and clinical use.
Stem keywords: milky white solution, sedation, anesthesia, OT
Lead-in keywords: Identify
Clinical cues: The visual cue of a 'milky white' liquid in a syringe is a classic identifier for Propofol.

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