Arrange the following steps of Functional Endoscopic Sinus Surgery (FESS) in the proper order:

A. Uncinectomy

B. Bullectomy

C. Open maxillary sinus

D. Ethmoidectomy Options:

1. A

   ABDC

2. B

   CABD

3. C

   ACBD

4. D

   CBAD

Appeared in: INI-CET EXAM -2025

Explanation

• The correct sequence for FESS is ACBD, reflecting the standard surgical approach.
• The procedure begins with Uncinectomy (A) to expose the ostiomeatal complex, the primary drainage pathway.
• This is followed by opening the maxillary sinus (C), whose ostium is now visible.
• Next, Bullectomy (B) is performed to address the anterior ethmoid cells.
• The surgery concludes with a more extensive Ethmoidectomy (D) as needed, proceeding from anterior to posterior.

Why Other Options Were Wrong

• Option A: This sequence (ABDC) incorrectly places bullectomy (B) before opening the maxillary sinus (C). The maxillary sinus ostium is typically addressed immediately after uncinectomy.
• Option B: This sequence (CABD) incorrectly starts with opening the maxillary sinus (C). Uncinectomy (A) must be performed first to gain access to the maxillary sinus ostium.
• Option D: This sequence (CBAD) incorrectly starts with opening the maxillary sinus (C) and bullectomy (B) before the essential first step of uncinectomy (A).

Related Visual

• Visual 1: Diagram - A sagittal view of the lateral nasal wall showing the uncinate process, ethmoid bulla, and the openings to the maxillary and ethmoid sinuses. This helps visualize the anatomical relationship between the structures involved in FESS.
• Visual 2: Flowchart - A flowchart illustrating the ACBD sequence, with each box describing the step and its purpose, reinforcing the procedural order.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Surgical Steps of Functional Endoscopic Sinus Surgery (FESS) as background academic context rather than a clinical decision trigger.
• Understanding the correct FESS sequence is crucial for perioperative nurses to anticipate the surgeon's needs for instruments and to monitor for specific complications related to each step.
• For example, during ethmoidectomy, the nurse must be aware of the proximity to the orbit and skull base and be vigilant for signs of orbital injury (e.g., proptosis, hematoma) or cerebrospinal fluid (CSF) leak.
• What if? If a patient has extensive disease isolated only to the maxillary sinus, the surgeon might perform only an uncinectomy and maxillary antrostomy (Steps A and C) and not proceed to bullectomy or ethmoidectomy.

How to Approach the Question

• First, identify the question type. This is a procedural sequencing question.
• Recall the basic principle of FESS: to restore sinus drainage by opening blocked pathways.
• Identify the key initial step. Uncinectomy is the 'gatekeeper' step that provides access to the other sinuses. Any sequence not starting with 'A' is likely incorrect.
• Logically order the remaining steps based on anatomy. After removing the uncinate (A), the maxillary sinus opening (C) is exposed. Then, the surgeon moves to the adjacent ethmoid structures (B and D).
• This leads to the sequence A -> C -> B -> D.
• Compare this logical sequence to the given options to find the correct answer.

Concept Tested & Keywords

• Concept Tested: Surgical Steps of Functional Endoscopic Sinus Surgery (FESS)
• Stem keywords: Functional Endoscopic Sinus Surgery, FESS, Uncinectomy, Bullectomy, Open maxillary sinus, Ethmoidectomy
• Lead-in keywords: Arrange, proper order

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