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Expansile properties of otowicks: an in vitro study

Published online by Cambridge University Press:  08 March 2017

P J Clamp
P J Clamp*
Affiliation:
Department of ENT, Royal United Hospital Bath NHS Trust, Bath, UK
*
Address for correspondence: Mr P J Clamp, Department of ENT, Royal United Hospital Bath NHS Trust, Coombe Park, Bath BA1 3NG, UK. E-mail: philip.clamp@nhs.net
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Abstract

Objective:

To determine the expansile and absorptive properties of the expandable ear wick when tested with commonly prescribed ear drop preparations.

Design:

This in vitro study assessed wick expansion and absorption of drops when different ear drop preparations were applied. Nine commonly used ear drop preparations were tested (Gentisone HC, Sofradex, Otomize, Betnesol, Exocin, Canesten, Locorten-Vioform, EarCalm and ichthammol glycerin) with a standard expandable ear wick.

Main outcome measures:

Weight, length and width of otowick following exposure to ear drops.

Results:

There was a marked difference in the absorption and expansion of the otowick when different drops were used. This corresponded to the aqueous or oil base of each preparation. All aqueous ear drop preparations (i.e. Gentisone HC, Sofradex, Otomize, Betnesol, Exocin and EarCalm) produced similar rates of absorption into, and expansion of, the otowick. The oil-based ear drop preparations (i.e. Canesten, Locorten-Vioform and ichthammol glycerin) failed to expand the wick and showed poor rates of absorption into the wick.

Conclusion:

Expandable ear wicks should only be used in conjunction with aqueous ear drops. When using expandable otowicks as an adjunct to treating fungal otitis externa, acetic acid ear drops should be prescribed, as all other anti-fungal drops are oil-based.

Keywords

Otitis ExternaEar CanalTampons, SurgicalAnti-Bacterial AgentsAntifungal Agents

Information

Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 122 , Issue 7 , July 2008 , pp. 687 - 690
Copyright
Copyright © JLO (1984) Limited 2008

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References

1 Badran, K, Jani, P. How we do it: a new ‘one stop’ ear wick. Clin Otolaryngol 2006;31:151–2CrossRefGoogle Scholar
2 Rosenfeld, RM, Brown, L, Cannon, CR, Dolor, RJ, Ganiats, TG, Hannley, M et al. Clinical practice guideline: acute otitis externa. Otolaryngol Head Neck Surg 2006;134:S4–23CrossRefGoogle ScholarPubMed
3 Pond, F, McCarty, D, O'Leary, S. Randomized trial on the treatment of oedematous acute otitis externa using ear wicks or ribbon gauze: clinical outcome and cost. J Laryngol Otol 2002;116:415–19CrossRefGoogle ScholarPubMed
4 Hogg, RP, Corcoran, M, Johnson, AP. Long-term morbidity from Pope Ear Wicks. J Roy Soc Med 1998;91:649–50CrossRefGoogle ScholarPubMed
5 McRae, D, Dilkes, M, Kenyon, G. The Pope Wick as a myringoplasty ear canal dressing. J Laryngol Otol 1992;106:327–8CrossRefGoogle ScholarPubMed
6 Black, B. Use of the ear wick. Aust Fam Physician 1986;15:805–6Google ScholarPubMed
7 Cannon, CR. Surgical applications of the expandable ear wick. Laryngoscope 1985;95:739–40Google ScholarPubMed
8 Taylor, JS. Otitis externa: treatment using a new expandable wick. South Med J 1975;68:698, 732CrossRefGoogle ScholarPubMed
9 Taylor, JS. Otitis externa: treatment using a new expandable wick. Eye Ear Nose Throat Mon 1974;53:458–9Google ScholarPubMed
10 Rosenfeld, RM, Singer, M, Wasserman, JM, Stinnett, SS. Systematic review of topical antimicrobial therapy for acute otitis externa. Otolaryngol Head Neck Surg 2006;134:S24–48CrossRefGoogle ScholarPubMed
11 British National Formulary 52, September 2006. London: British Medical Association and Royal Pharmaceutical Society of Great Britain, 2006Google Scholar
12 Nilssen, E, Wormald, PJ, Oliver, S. Glycerol and ichthammol: medicinal solution or mythical potion? J Laryngol Otol 1996;110:319–21CrossRefGoogle ScholarPubMed
13 Ahmed, K, Roberts, ML, Mannion, PT. Antimicrobial activity of glycerine-ichthammol in otitis externa. Clin Otolaryngol Allied Sci 1995;20:201–3CrossRefGoogle ScholarPubMed
14 van Balen, FA, Smit, WM, Zuithoff, NP, Verheij, TJ. Clinical efficacy of three common treatments in acute otitis externa in primary care: randomised controlled trial. BMJ 2003;327:1201–5CrossRefGoogle ScholarPubMed