Which instrument is used for Rectal examination?

Appeared in: Bihar CHO - 2021

Explanation

A proctoscope is an endoscopic instrument specifically designed for the direct visualization of the rectum and anal canal.
The term 'procto' is a medical prefix referring to the rectum or anus, directly linking the instrument to its function.
It is used to diagnose conditions such as hemorrhoids, fissures, abscesses, tumors, and polyps in the lower gastrointestinal tract.
The procedure, known as proctoscopy, allows for the evaluation of symptoms like rectal bleeding, pain, or changes in bowel habits.

Option A: An otoscope is used to examine the external ear canal and the tympanic membrane (eardrum). Its prefix 'oto-' refers to the ear.
Option C: A cystoscope is used to visualize the interior of the urinary bladder and urethra. Its prefix 'cysto-' refers to the bladder.
Option D: A colposcope is a magnifying instrument used for a detailed examination of the cervix, vagina, and vulva. Its prefix 'colpo-' refers to the vagina.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of medical instruments for specific examinations as background academic context rather than a clinical decision trigger.
A nurse's primary role during a proctoscopy is patient support and safety. This includes ensuring proper patient preparation (bowel cleansing), correct positioning for the procedure, and monitoring for adverse reactions like pain or vasovagal responses.
Post-procedure, the nurse must monitor for complications such as rectal bleeding or signs of perforation (abdominal pain, fever, distention) and educate the patient on what to expect (e.g., minor discomfort, small amount of bleeding).
What if? If the patient reports severe abdominal pain and a rigid abdomen after the procedure, the nurse must immediately suspect a bowel perforation, a medical emergency. The priority action would be to assess vital signs, notify the physician immediately, and prepare the patient for potential surgical intervention.

How to Approach the Question

First, identify the key term in the question stem: 'Rectal examination'.
Next, analyze the options provided, which are all names of medical instruments (scopes).
Break down the medical terminology of the options if possible. The prefix 'procto-' specifically relates to the rectum.
Match the function of the instrument with the body part mentioned in the question. 'Proctoscope' is the instrument for examining the 'rectum'.
Eliminate the other options by recalling their functions: 'oto-' for ear, 'cysto-' for bladder, and 'colpo-' for vagina/cervix.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 pp. 82-84, 84-86

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 1 p. 135-137

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