INI-CET 2024 — Anesthesiology

Q: What is the medical procedure that involves the insertion of a tube directly into the trachea to secure the airway and ensure adequate ventilation?

Endotracheal tube insertion. ***Endotracheal tube insertion*** - This procedure involves placing a tube directly into the **trachea** to maintain an open airway and facilitate **mechanical ventilation**. - It is critical for patients who cannot protect their airway or require ventilatory support, ensuring direct access for gas exchange. *Oral suction* - **Oral suction** involves removing secretions from the mouth and pharynx but does not secure the airway to prevent aspiration or provide direct ventilatory support. - It is a superficial procedure, used for clearing the oral cavity, not for managing the trachea. *Oropharyngeal suction* - Similar to oral suction, **oropharyngeal suction** clears the back of the throat but does not involve insertion into the trachea to secure the airway. - This method is used for removing secretions from the upper airway and preventing aspiration into the larynx, but it doesn't establish a definitive airway. *Nasogastric tube insertion* - **Nasogastric tube insertion** involves placing a tube through the nose into the stomach, primarily for feeding or gastric decompression. - This procedure is unrelated to airway management and has no role in securing the trachea for ventilation. [Practice more Anesthesiology PYQs on OnCourse]

Q: Which of the following is a second-generation laryngeal mask airway (LMA)?

LMA Proseal. ***LMA Proseal*** - The **LMA Proseal** is classified as a second-generation LMA because it incorporates features like a **gastric access channel** (drain tube) to allow for suctioning of gastric contents and a **higher seal pressure** around the glottis. - These advancements improve **airway protection** and ventilation efficacy compared to first-generation devices. *Ambu* - The term "Ambu" primarily refers to the company that manufactures various medical devices, including LMAs, but does not specify a particular LMA model that is exclusively second-generation. - Ambu has produced both first and second-generation supraglottic airway devices. *Classic LMA* - The **Classic LMA** is considered a **first-generation** laryngeal mask airway. - It lacks features such as a gastric access channel and typically provides a lower seal pressure, offering less protection against aspiration. *LMA Flexible* - The **LMA Flexible** is also a **first-generation** laryngeal mask airway, distinguished by its wire-reinforced, flexible tube allowing for surgical access to the head and neck. - While it has a specialized design, it does not possess the inherent safety features (e.g., gastric access) that define second-generation devices. [Practice more Anesthesiology PYQs on OnCourse]

Q: Patient was planned for surgery under GA, in the induction phase rocuronium was given 85mg but the anesthetist did not succeed in intubating. Which could be the best reversal agent used?

Sugammadex (specific reversal agent for rocuronium). ***Sugammadex (specific reversal agent for rocuronium)*** - **Sugammadex** is a modified gamma-cyclodextrin that forms a tight, water-soluble complex with **rocuronium**, effectively encapsulating and inactivating it. - It is highly effective for rapid reversal of **rocuronium**-induced neuromuscular blockade, especially in situations where immediate reversal is critical, such as a "cannot intubate, cannot ventilate" scenario. *Neostigmine (non-specific acetylcholinesterase inhibitor)* - **Neostigmine** acts by inhibiting **acetylcholinesterase**, increasing the amount of acetylcholine at the neuromuscular junction to overcome the competitive block. - Its reversal effect is slower and less reliable than sugammadex, especially after a large dose of rocuronium or deep blockade. *Glycopyrrolate (anticholinergic agent)* - **Glycopyrrolate** is an **anticholinergic** agent used to counteract the muscarinic side effects (e.g., bradycardia, salivation) of **acetylcholinesterase inhibitors** like neostigmine, but it has no direct reversal effect on neuromuscular blockade. - It is typically co-administered with neostigmine, not used as a standalone reversal agent for **rocuronium**. *Edrophonium (non-specific acetylcholinesterase inhibitor)* - **Edrophonium** is a short-acting **acetylcholinesterase inhibitor**, similar to neostigmine but with a more rapid onset and shorter duration of action. - It is less potent and effective than neostigmine for reversing moderate to deep neuromuscular blockade and would not be the best choice after a significant dose of **rocuronium**. [Practice more Anesthesiology PYQs on OnCourse]

3 Previous Year Questions with Answers & Explanations

Questions

What is the medical procedure that involves the insertion of a tube directly into the trachea to secure the airway and ensure adequate ventilation?

Which of the following is a second-generation laryngeal mask airway (LMA)?

Patient was planned for surgery under GA, in the induction phase rocuronium was given 85mg but the anesthetist did not succeed in intubating. Which could be the best reversal agent used?

INI-CET 2024 - Anesthesiology INI-CET Practice Questions and MCQs

Question 1: What is the medical procedure that involves the insertion of a tube directly into the trachea to secure the airway and ensure adequate ventilation?

A. Oral suction
B. Oropharyngeal suction
C. Endotracheal tube insertion (Correct Answer)
D. Nasogastric tube insertion

Explanation: ***Endotracheal tube insertion*** - This procedure involves placing a tube directly into the **trachea** to maintain an open airway and facilitate **mechanical ventilation**. - It is critical for patients who cannot protect their airway or require ventilatory support, ensuring direct access for gas exchange. *Oral suction* - **Oral suction** involves removing secretions from the mouth and pharynx but does not secure the airway to prevent aspiration or provide direct ventilatory support. - It is a superficial procedure, used for clearing the oral cavity, not for managing the trachea. *Oropharyngeal suction* - Similar to oral suction, **oropharyngeal suction** clears the back of the throat but does not involve insertion into the trachea to secure the airway. - This method is used for removing secretions from the upper airway and preventing aspiration into the larynx, but it doesn't establish a definitive airway. *Nasogastric tube insertion* - **Nasogastric tube insertion** involves placing a tube through the nose into the stomach, primarily for feeding or gastric decompression. - This procedure is unrelated to airway management and has no role in securing the trachea for ventilation.

Question 2: Which of the following is a second-generation laryngeal mask airway (LMA)?

A. Ambu
B. Classic LMA
C. LMA Flexible
D. LMA Proseal (Correct Answer)

Explanation: ***LMA Proseal*** - The **LMA Proseal** is classified as a second-generation LMA because it incorporates features like a **gastric access channel** (drain tube) to allow for suctioning of gastric contents and a **higher seal pressure** around the glottis. - These advancements improve **airway protection** and ventilation efficacy compared to first-generation devices. *Ambu* - The term "Ambu" primarily refers to the company that manufactures various medical devices, including LMAs, but does not specify a particular LMA model that is exclusively second-generation. - Ambu has produced both first and second-generation supraglottic airway devices. *Classic LMA* - The **Classic LMA** is considered a **first-generation** laryngeal mask airway. - It lacks features such as a gastric access channel and typically provides a lower seal pressure, offering less protection against aspiration. *LMA Flexible* - The **LMA Flexible** is also a **first-generation** laryngeal mask airway, distinguished by its wire-reinforced, flexible tube allowing for surgical access to the head and neck. - While it has a specialized design, it does not possess the inherent safety features (e.g., gastric access) that define second-generation devices.

Question 3: Patient was planned for surgery under GA, in the induction phase rocuronium was given 85mg but the anesthetist did not succeed in intubating. Which could be the best reversal agent used?

A. Neostigmine (non-specific acetylcholinesterase inhibitor)
B. Glycopyrrolate (anticholinergic agent)
C. Edrophonium (non-specific acetylcholinesterase inhibitor)
D. Sugammadex (specific reversal agent for rocuronium) (Correct Answer)

Explanation: ***Sugammadex (specific reversal agent for rocuronium)*** - **Sugammadex** is a modified gamma-cyclodextrin that forms a tight, water-soluble complex with **rocuronium**, effectively encapsulating and inactivating it. - It is highly effective for rapid reversal of **rocuronium**-induced neuromuscular blockade, especially in situations where immediate reversal is critical, such as a "cannot intubate, cannot ventilate" scenario. *Neostigmine (non-specific acetylcholinesterase inhibitor)* - **Neostigmine** acts by inhibiting **acetylcholinesterase**, increasing the amount of acetylcholine at the neuromuscular junction to overcome the competitive block. - Its reversal effect is slower and less reliable than sugammadex, especially after a large dose of rocuronium or deep blockade. *Glycopyrrolate (anticholinergic agent)* - **Glycopyrrolate** is an **anticholinergic** agent used to counteract the muscarinic side effects (e.g., bradycardia, salivation) of **acetylcholinesterase inhibitors** like neostigmine, but it has no direct reversal effect on neuromuscular blockade. - It is typically co-administered with neostigmine, not used as a standalone reversal agent for **rocuronium**. *Edrophonium (non-specific acetylcholinesterase inhibitor)* - **Edrophonium** is a short-acting **acetylcholinesterase inhibitor**, similar to neostigmine but with a more rapid onset and shorter duration of action. - It is less potent and effective than neostigmine for reversing moderate to deep neuromuscular blockade and would not be the best choice after a significant dose of **rocuronium**.