Early Tympanoplasty Using a Synthetic Biomembrane for Military-Related Blast Induced Large Tympanic Membrane Perforation.

Abstract

Blast injuries in modern warfare are common, and tympanic perforation is often found. Spontaneous closures of large perforations that encompass greater than 80% of the tympanic surface are rare. Early closure of the tympanic membrane avoids the immediate infectious risk, which potentially complicates the initial management of these war-wounded patients, and allows for safe and early recovery of military activity. This study compared the outcomes of spontaneous closures and early biomembrane myringoplasty in subjects with large blast injury-induced tympanic perforation following a massive explosion. This is a retrospective, observational, cohort study military troops with large barotraumatic tympanic membrane perforation. The study investigates early surgical tympanoplasty versus observation for spontaneous closure. The hearing loss, tympanic perforation closure rate, and closure time were noted. Fourteen patients (19 ears) were referred from May 2008 to April 2017, and 6 patients (9 ears) underwent early myringoplasty. A total of 89% (n = 8) and 100% (n = 9) of the ears exhibited successful sealing of the perforation at one and 6 mo, respectively. In contrast, 60% (n = 6) of the 10 ears (8 patients) without initial myringoplasty did not heal spontaneously at 6 mo, and these ears underwent a delayed tympanoplasty procedure. Notably, patients with early myringoplasty suffered lower conductive hearing loss and fewer functional signs remotely. Early myringoplasty using a biomembrane for blast injury-induced large tympanic perforation is a fast and minimally invasive method to achieve earlier tympanic closure and a higher closure rate for safe recovery of activity. It can be performed under general anesthesia concurrently with surgery for additional body-wide trauma. The deployment of ENT surgeons on the battlefield in the French Army has enabled early management of these patients.