Methods of ENT Examination

Introduction

Master the art of ENT examination to excel in your MBBS and ENT PG journey. This comprehensive chapter aligns perfectly with the CBME curriculum, covering essential competencies like performing otoscopy, anterior rhinoscopy, and indirect laryngoscopy. Therefore, you will build strong conceptual clarity while preparing for theory exams, viva questions, practical assessments, and NEET PG MCQs.

Preparation for ENT Examination

• Environment: Always examine a quiet, well-ventilated room with controlled lighting. A semi-dark room is optimal for procedures using reflected light.
• Equipment Check: Verify the availability and sterility of all necessary instruments before beginning the examination.
• Patient Consent and Comfort: Explain the procedure to the patient clearly and obtain verbal consent. Position the patient comfortably on a chair or stool, sitting erect and leaning slightly forward.
• Chaperones: Always examine a female patient in the presence of a female attendant or a relative. Similarly, for children, a parent or guardian should be present.
• Hygiene. Finally, wash your hands and wear gloves to maintain hygiene.

General Physical Examination (GPE)

Before focusing on the ENT system, perform a focused GPE. This often provides vital diagnostic clues.

1. General Assessment: Note the patient’s build, nourishment, and level of consciousness (orientation to time, place, and person).
2. Vital Signs: Record pulse (rate, rhythm, volume), blood pressure, and Jugular Venous Pressure (JVP).
3. Systemic Signs: Look for pallor, icterus, cyanosis, clubbing, lymphadenopathy (especially cervical), and pedal oedema.

Local Examination Setup

The hallmark of ENT is the use of reflected light. While many specialities use direct light, ENT relies on a “Bull’s Eye Lamp” and a “Head Mirror” to keep both hands free for instrumentation.

Bull’s Eye Lamp and Head Mirror Technique

Goal: Achieve optimal illumination for nasal and oral cavity exams.

1. Placement of Bull’s Eye Lamp: Position the lamp behind and to the left of the patient’s head, at shoulder level and its height can be adjusted according to the patient and examiner. Tilt, rotate, raise, or lower the lamp as needed.
2. Head Mirror: It is a concave mirror with a focal length of 25 cm, with Diameter: 89 mm (3.5 inches) and a Central Hole: 19 mm (3/4 inch). It reflects light from the bull’s-eye lamp onto the part being examined. Wear it over your right eye. The central hole should align with your pupil. Adjust the mirror angle to focus the reflected light on the examination site. Maintain a distance of approximately 25 cm from the target for maximum illumination and clarity. It gives binocular vision and preserves the depth perception required for proper examination.