🩺 Speculum Examination

Speculum examination is a core gynaecological procedure used to visualize the vagina and cervix. It is essential for cervical cancer screening, diagnosing infections, and investigating abnormal bleeding. The procedure requires high levels of communication, sensitivity, and respect for patient dignity. Clinicians must be proficient in identifying normal cervical anatomy versus pathological changes and be able to correctly collect diagnostic samples while minimizing patient discomfort.

Speculum examination is indicated for the investigation of abnormal vaginal bleeding (post-coital, intermenstrual, or post-menopausal), unexplained pelvic pain, or vaginal discharge. It is the standard method for obtaining cervical screening samples (Smear tests) and for taking swabs to diagnose sexually transmitted infections (STIs) or bacterial vaginosis. It is also used to visualize the cervix for the presence of polyps, ectropion, or suspicious lesions, and to check for the presence of 'threads' from an intrauterine device (IUD).

A speculum examination is generally avoided in patients who have not yet been sexually active, unless absolutely necessary and performed by a specialist. It is contraindicated in the presence of heavy vaginal bleeding that obscures the view, or if there is suspected pre-labour rupture of membranes (PROM) without specialist supervision (to avoid infection). The procedure should be deferred if the patient withdraws consent or is in extreme distress. In cases of suspected pelvic organ prolapse, a Sims speculum is used instead of a Cusco speculum.

The primary equipment is a bivalve (Cusco) speculum, available in various sizes (small, medium, large). Additional requirements include a high-intensity light source (usually a mobile lamp), water-soluble lubricant, gloves, and paper towels. Depending on the indication, you may also need swabs (for charcoal or viral media), a speculum-compatible brush/spatula for cervical screening (Cervixix broom), or an Ayre spatula. A chaperone is a mandatory requirement for this intimate examination.

After obtaining consent and ensuring a chaperone is present, ask the patient to undress from the waist down and lie in the lithotomy position (or supine with knees bent and heels together). Inspect the vulva. Lubricate the speculum and gently insert it into the vagina while parting the labia. Aim towards the sacrum (downwards) to account for the vaginal tilt. Once deep enough, gently open the blades to locate the cervix. Secure the speculum in the open position using the screw mechanism. Perform any necessary swabs or smears. To remove, loosen the screw, partially close the blades (to avoid pinching the cervix), and rotate as you withdraw.

The appearance of a normal cervix is smooth, pink, and round (nulliparous) or slit-like (parous). An 'ectropion' appears as a red, well-demarcated area around the os where columnar epithelium is visible; this is common in younger women and those on the pill. Abnormal findings include 'strawberry cervix' (suggestive of Trichomonas), mucopurulent discharge (suggestive of Chlamydia or Gonorrhoea), or suspicious friable masses (suggestive of malignancy). The vaginal walls are also inspected for atrophy, ulceration, or discharge (e.g., 'cottage-cheese' appearance in candidiasis).

Common errors include failing to ensure the patient's privacy and dignity throughout the procedure. Students often forget to apply lubricant to the speculum or apply it to the tip only, causing discomfort. Using a speculum that is too small or too large for the patient's parity can lead to poor visualization or unnecessary pain. A frequent technical mistake is not fully opening the speculum blades or failing to 'sweep' the cervix into view, resulting in the examiner looking at the vaginal walls instead of the transformation zone.

Always maintain communication with the patient, explaining what you are doing before you do it. Warm the speculum with your hand or warm water if possible. Start by inspecting the external genitalia for lumps, scars, or discharge. When inserting, hold the speculum blades closed and enter at a slight angle (1 o'clock) to avoid the urethra, then rotate to the horizontal plane. Ensure the light source is positioned over your shoulder for optimal visualization. Always offer the patient a tissue and privacy to get dressed at the end.

Aligned with the MLA 'Obstetrics and Gynaecology' system. It is vital to understand the 'Two-Week Wait' criteria for suspected cervical cancer. Students must be familiar with the UK National Cervical Screening Program guidelines, including the primary HPV testing protocol. Knowing which swabs go into which media (e.g., NAAT for Chlamydia/Gonorrhoea vs. charcoal for Trichomonas/BV) is a frequent exam focus. Always document the presence of a chaperone by name.