Chapter 13: Diagnostic tests
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13.14 Swab sampling: nose
Essential equipment
- Personal protective equipment
- Sterile bacterial or viral swab (with transport medium)
Optional equipment
- 0.9% sodium chloride
- Appropriate documentation/form
Pre‐procedure
ActionRationale
- 1.
Introduce yourself to the patient, explain and discuss the procedure with them, and gain their consent to proceed.To ensure that the patient feels at ease, understands the procedure and gives their valid consent (NMC [165], C).
- 2.Wash hands with bactericidal soap and water, or decontaminate physically clean hands with an alcohol‐based handrub. Put on apron and gloves.To reduce the risk of cross‐infection and specimen contamination (NHS England and NHSI [155], C).
Procedure
- 3.Remove swab from outer packaging.To ensure collection of specimen material. E
- 4.Ask patient to tilt head backwards.To optimize visualization of the area to be swabbed (Gould and Brooker [75], E).
- 5.Moisten swab with sterile saline.To prevent discomfort to the patient as the nasal mucosa is normally dry and organisms will adhere more easily to a moist swab. E
- 6.Insert swab inside the anterior nares with the tip directed upwards and gently rotate (Action figure 13.23).To ensure that an adequate specimen from the correct site is obtained and to avoid damage to the epithelium, which is delicate (Gould and Brooker [75], E).
- 7.Repeat the procedure with the same swab in the other nostril.To optimize organism collection. E
Post‐procedure
- 8.Remove cap from plastic transport tube.To avoid contamination of the swab. E
- 9.Carefully place swab into plastic transport tube, ensuring it is fully immersed in the transport medium. Ensure cap is firmly secured.To avoid contamination of the swab and to maintain the viability of the sampled material during transportation. See manufacturer's guidance. E
- 10.Provide the patient with a tissue if required.For patient comfort (Higgins [84], E).
- 11.Remove gloves and apron, and wash and/or decontaminate hands.To reduce the risk of cross‐infection (NHS England and NHSI [155], C).
- 12.Label swab immediately
- 13.Complete microbiology request form (including relevant information such as exact site, nature of specimen and investigation required).
- 14.If sample taken for screening: state clearly on the microbiology request form, for example for MRSA screening.To ensure only these organisms are being analysed, so the result will only indicate their presence or absence, and sensitivities (Weston [255], E).
- 15.Arrange prompt delivery to the microbiology laboratory.To achieve optimal conditions for analysis (PHE [186], C).
- 16.Document the procedure in the patient's records.To ensure timely and accurate record keeping (NMC [165], C).