Topical TXA in Epistaxis
Background: Epistaxis is a common Emergency Department (ED) complaint with over 450,000 visits per year and a lifetime incidence of 60% (Gifford 2008, Pallin 2005). Standard anterior epistaxis treatment consists of holding pressure, use of local vasoconstrictors, topical application of silver nitrate and placement of an anterior nasal pack. ED patients with epistaxis often fail conservative management and end up with anterior nasal packs which are uncomfortable. This is even more common in the group of patients who are taking antiplatelet agents like aspirin or clopidogrel. Recently, the use of topical tranexamic acid (TXA) has been described in patients with anterior epistaxis with shorter time to epistaxis control and shorter ED length of stay (Zahed 2013). However, prior studies have not focused specifically on patients taking antiplatelet agents.
Article:
Outcomes:
- (Primary): Proportion of patients in each group with stopped bleeding at 10 minutes
- (Secondary): Re-bleeding rate at 24 hours and one-week, ED length of stay (LOS), patient satisfaction
Primary Results:
- Patients enrolled
- n = 384 patients assessed for eligibility
- n = 124 patients who were included and randomized
- No patients lost to follow up for the primary or secondary outcomes
Critical Findings:
Strengths:
- Study asks a clinically relevant question regarding cessation of bleeding in epistaxis
- Data analysts were blinded to allocation
- Surpassed target sample size (57 patients needed in each arm to achieve 80% power to detect 25% difference in primary outcome)
- Follow up was complete (no patients lost)
Limitations:
- Unclear whether cessation at 10 minutes clinically more important than cessation at another interval. Additionally, nasal packing may take longer to achieve hemostasis based on mechanism making this particular comparison (primary outcome) unfair
- Physicians and patients non-blinded to intervention. Researchers indicate that the study wasn’t blinded because pharmacy prepared kits had differing numbers of cotton pledgets and the consistency, color and smell of the medications used for soaking could unblind groups
- Bleeding at 24 hours and one-week assessed in person or by phone. Authors do not specify how many assessed by each method. May introduce recall bias
- Majority of patients on aspirin only (> 80%). Though patients on clopidogrel included, results may not apply as well to this group
Authors Conclusions:
References:
- Gifford TO, Orlandi RR. Epistaxis. Otolaryngol Clin North Am. 2008;41:525-536. PMID: 18435996
- Pallin DJ et al. Epidemiology of epistaxis in US emergency departments, 1992 to 2001. Ann Emerg Med. 2005;46:77-81. PMID: 15988431
- Zahed R et al. A new and rapid method for epistaxis treatment using injectable form of tranexamic acid topically: a randomized controlled trial. Am J Emerg Med 2013; 31: 1389-92. PMID: 23911102
Topical TXA in Epistaxis |
A new and rapid method for epistaxis treatment using injectable form of tranexamic acid topically: a randomized controlled trial.
Abstract
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RESULTS:
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Comment in
- PMID:
- 23911102
- DOI:
- 10.1016/j.ajem.2013.06.043