Role of circumferential subannular tympanoplasty in anterior and subtotal perforations

Bilateral same-day endoscopic tympanoplasty: a paradigm shift? or mere hype?

OBJECTIVE

To ascertain the feasibility of simultaneous bilateral same-day endoscopic tympanoplasty in a secondary-level hospital in a developing country.

MATERIAL & METHODS

A prospective interventional cohort study conducted at a secondary-care hospital in North India.

INCLUSION CRITERIA

Consenting patients having bilateral perforations aged 10-50 years.

EXCLUSION CRITERIA

Cholesteatoma/granulations/need for ossiculoplasty/previously operated ear/s. Temporalis fascia graft sufficient to repair 2 perforations was harvested from a right-side supratemporal incision followed by endoscopic trans-canal underlay tympanoplasty on both ears in the same session.

FOLLOW-UP

7th day and 1, 3, and 6 months post-operatively. An intact graft at 6 months was considered surgical success. Hearing improvement was assessed by pure tone audiometry done 6 months postoperatively.

RESULTS

20 patients (40 ears) had large central/subtotal perforations. 38 out of 40 ears had successful graft uptake at 6 months. Average preoperative and postoperative air-bone gaps were 31+-4.4, 16.6+-2.9 dB respectively (p < 0.001, significant). Average air-bone gap closure was14.5+-3.2 dB. There was no instance of postoperative sensorineural hearing loss/postoperative complications.

CONCLUSION

Bilateral same-day endoscopic tympanoplasty is feasible, safe, and efficient, saving time and resources for both the healthcare system and patients.

Endoscopic Cartilage Myringoplasty with Anterior Margin Preservation for Repairing Large Anterior Perforations

Objective: This study compared the graft outcomes and complications of endoscopic cartilage inlay myringoplasty with preservation of anterior margins (IPAM) and the cartilage underlay technique with raising the tympanomeatal flap (CUTF) for repairing large anterior perforations. Materials and Methods: In total, 55 patients with large anterior perforations were recruited and allocated to the IPAM (n = 28) or the CUTF (n = 27) group. The graft success rate, hearing gain, operation time, and postoperative complications were compared between the groups at 12 months. Results: The mean operation times were 29.3 ± 2.7 minutes and 46.4 ± 3.9 minutes in the IPAM and CUTF groups, respectively (P < .001). The residual perforation rate was 0.0% in the IPAM group and 11.1% in the CUTF group (P = .222). All patients completed the 12-month follow-up. The overall graft success rate was 96.4% in the IPAM group and 88.9% in the CUTF group (P = .577). No significant differences were observed between the groups in terms of postoperative pure-tone averages for air conduction and bone conduction, air-bone gaps (ABGs), or ABG changes. In the CUTF group, 22.2% of the patients reported altered taste perception, 3.7% experienced bony external auditory canal (EAC) stenosis, and 3.7% developed EAC cholesteatoma. By contrast, the IPAM group did not have any cases of altered taste perception, EAC stenosis, or cholesteatoma. Conclusions: Endoscopic cartilage myringoplasty with IPAM and anterior perichondrium folding is a simple, effective, and minimally invasive technique for repairing large anterior perforations. It offers a high graft success rate and better hearing improvement compared to CUTF.

Comparison of perichondrium-cartilage double and single underlay myringoplasty for subtotal perforations: a randomized controlled trial

OBJECTIVE

The objective of this study was to compare graft outcome, operation time and surgical complications of the double and single perichondrium-cartilage underlay techniques for repairing subtotal tympanic membrane (TM) perforations.

MATERIALS AND METHODS

Patients with unilateral subtotal perforations undergoing myringoplasty were prospectively randomized to undergo DPCN or SPCN. The operation time, graft success rate, audiometric outcomes, and complications were compared between these groups.

RESULTS

In total, 53 patients with unilateral subtotal perforations were included (DPCN group, 27; SPCN group, 26).All patients completed 6 months of follow-up. The mean operation time was 41.2 ± 1.8 min in the DPCN group and 37.2 ± 5.4 min in the SPCN group, the difference was not significant (p = 0.613).The graft success rates were 96.3% (26/27) in the DPCN group and 73.1% (19/26) in the SPCN group, the difference was significant (p = 0.048). During the period of follow-up, residual perforation was found at postoperative in one (3.7%) in the DPCN group, while cartilage graft slipped (graft lateralization) in 2 (7.7%) and residual perforation in 5 (19.2%) were found in the SPCN group, the difference of residual perforation was not significant among two group (p = 0.177).In addition, no significant between-group differences were observed pre- (p = 0.741) or post- (p = 0.687) operative ABG values or mean ABG gain (p = 0.659) (Table 2).The functional success rates (postoperative ABG ≤ 20 dB) were 85.2% (23/27) in the DPCN group and 73.1% (19/26) in the SPCN group (p = 0.454).

CONCLUSION

Although similar functional result and operation time can be obtained with double perichondrium-cartilage underlay technique compared to the single perichondrium-cartilage underlay technique for endoscopic closure of subtotal perforations, double unerlay technique offers better anatomical result with minimum complications.

Comparing Myringoplasty to Type I Tympanoplasty in Tympanic Membrane Repair: A Systematic Review and Meta-Analysis

OBJECTIVE

To compare the anatomic success rates of type I tympanoplasty (tympanoplasty) versus myringoplasty. By our definition, tympanoplasty involves entering the middle ear via elevation of a tympanomeatal flap, while myringoplasty involves surgery to the drumhead without middle ear exposure.

DATA SOURCES

PubMed, Scopus, CINAHL, Cochrane.

REVIEW METHODS

To be included, studies must have documented surgical technique, tympanic membrane (TM) perforation size (as % of TM), and success rate using tissue or alloplastic grafts. Exclusion criteria included series with more than 10% of patients with cholesteatoma or middle ear pathology. A meta-analysis of weighted summary proportions under the random effects model was performed, and proportion differences (PD) were calculated. A secondary analysis of hearing outcomes was performed.

RESULTS

Eighty-five studies met inclusion, with a tympanoplasty cohort of n = 7966 and n = 1759 for myringoplasty. For perforations, less than 50% of the TM, the success rate for tympanoplasty and myringoplasty was 90.2% and 91.4%, respectively (PD: 1.2%, p = .19). In perforations greater than 50%, tympanoplasty and myringoplasty success rates were 82.8% and 85.3%, respectively (PD: 2.5%, p = .29). For both procedures, perforations less than 50% of the TM had higher success rates than perforations greater than 50% of the TM (p < .01). Both techniques endorsed significant improvements to air-bone gap (ABG) metrics.

CONCLUSION

Our analysis suggests that the anatomic success rate is similar for tympanoplasty and myringoplasty, regardless of perforation size, and that smaller perforations experience higher success rates in both techniques. ABG outcomes were also similar between procedure techniques.

General anaesthetic vs local anaesthetic myringoplasties: a systematic review and meta-analysis

AIMS

To assess all available data and determine the success rates and tolerability of local anaesthetic myringoplasty in comparison with those undertaken under general anaesthetic myringoplasty.

MATERIALS AND METHODS

The study was designed following a PRISMA-P protocol and registered with the PROSPERO database. MEDLINE, Cochrane Library (CDSR/Central), EMBASE and CINHAL-were directly searched for studies, which met the inclusion criteria.

OBJECTIVES

Primary objective was to compare perforation closure rates between patients undergoing myringoplasty under local anaesthetic and those under general anaesthetic from all available published data. Secondary outcomes include complications, such as 'any minor complications', infection rates in the first 6 month post-op, facial nerve weakness, dysgeusia and patient satisfaction.

RESULTS

27 studies were included in the final analysis and found that myringoplasty had an overall perforation closure rate of 89%. The pooled proportion of closures after myringoplasty under local anesthesia was 87% and for myringoplasties under general anesthesia was 91%. Analysis of myringoplasty under local anaesthesia focusing on 'in-office' performed procedures only, found a closure rate of 88%.

CONCLUSIONS

There is no significant difference in the success rate of myringoplasty surgery when performed under local or general anaesthetic as measured by perforation closure rates. However, there are other factors, which can drive choosing local anaesthetic surgery, such as minimising anaesthetic risks, reducing costs and reducing environmental impact.

Circumferential subannular tympanoplasty: surgical and hearing outcome in 224 ears with subtotal perforation

BACKGROUND

Subannular tympanoplasty is a newer technique with limited research articles in the literature. These articles have limitation in terms of sample data. We reviewed outcome of subannular tympanoplasty performed during last five years in our center.

OBJECTIVE

To determine the surgical and hearing outcome of circumferential subannular tympanoplasty.

METHODS

A retrospective observational study was performed in a tertiary care academic center involving 224 subjects with mucosal chronic otitis media who underwent circumferential subannular type 1 tympanoplasty.

RESULTS

Complete neo-tympanum was found in 213 cases (95.1%) at the end final follow period of 12 months after surgery. Eleven tympanic membranes did not take up the graft and considered failure at the end of 6 months after surgery. All of them were subjected for revision surgery and showed intact neo-tympanum after 12 months of surgery. The hearing outcome showed significant improvement in air conduction thresholds from 42.54 ± 13.04 dB to 30.48 ± 10.61 dB at the end of one year. No surgical complication was observed in the study group.

CONCLUSION

The circumferential subannular tympanoplasty carries good surgical success and should be preferred in large and subtotal perforations. Randomized controlled trials are warranted to overcome the limitations in the present study.

SIGNIFICANCE

This is the first study showing outcome of subannular tympanoplasty in large sample size of more than 200.

Endoscopic modified perichondrium-cartilage sandwich graft for repairing chronic subtotal and total perforations

OBJECTIVE

The objective of this study was evaluate the short-and long-term graft outcome and complications of endoscopic modified perichondrium-cartilage sandwich graft for repairing chronic subtotal and total perforations.

STUDY DESIGN

Prospective case series.

MATERIALS AND METHODS

135 patients with chronic subtotal and total perforations who underwent endoscopic modified perichondrium-cartilage sandwich graft technique. The graft success rate, hearing outcome, and complications were evaluated at postoperative 6 and 24 months.

RESULTS

124 patients were finally included in this study. The graft success rate was 96.3% in subtotal perforation and 97.7% in total perforation (P = 0.874), with an overall success rate of 96.8% at postoperative 6 months. The graft success rate was 95.8% (68/71) in subtotal perforation and 94.9% (37/39) in total perforation (P = 0.795), with an overall success rate of 95.5% (105/110) at postoperative 24 months. The mean ABG improved from 28.0 ± 5.3 dB preoperatively to 14.9 ± 4.8 dB postoperatively 12 months (P < 0.05) for subtotal perforations; from 33.4 ± 7.4 dB preoperatively to 16.1 ± 2.4 dB postoperatively 12 months (P < 0.05) for total perforations. No graft-related complications (e.g., graft lateralization, significant blunting, graft medialization) were encountered during the follow-up period. Of the 110 patients, temporal bone CT revealed well pneumatization of the middle ear and mastoid region. However, graft keratin pearl was noticed in 1.8% (2/110) patients.

CONCLUSIONS

Endoscopic modified perichondrium-cartilage sandwich graft for repairing subtotal and total perforations had excellent short and long-term graft success rate with less time-consuming and minimal complications.

Interlay Myringoplasty With Anterior Subannular Grafting Technique for Anterior and Subtotal Perforations

OBJECTIVE

To describe the interlay myringoplasty with anterior subannular grafting technique and evaluate postoperative hearing and complications of this technique.

STUDY DESIGN

Retrospective chart review.

PATIENTS

We included 141 patients with anterior and subtotal tympanic membrane (TM) perforation. Patients who underwent concurrent ossicular chain reconstruction were included in graft success and complication rates evaluations, and were excluded from audiometric evaluation.

INTERVENTIONS

Only squamous layer of the TM continuous with posterior meatal skin is elevated except one of anterioinferior annulus. The inner tympanic remnant is released from the anterioinferior annulus and then the subannular mucosa is separated from the annulus to fashion a subannular pocket. The anterior edge of the graft is inserted into the pocket, and the rest of the graft is sandwiched between the two divided layers of the TM.

MAIN OUTCOME MEASURES

Graft success rate and hearing results were evaluated at 6 months postoperatively. Postoperative complications were also noted.

RESULTS

The technique was successfully performed in 132 (93.6%) cases. Graft success rate was 98.3% (111/113) and the mean improvement of the air-bone gap was 9.5 dB, which was statistically significant (p < 0.001). There was no anterior blunting or TM lateralization. The pearl formations were found in six (5.3%) patients. All of them were easily removed at follow-up examination.

CONCLUSIONS

The present study showed the interlay myringoplasty with anterior subannular grafting technique produces excellent results to repair anterior or subtotal TM perforations with few risk of anterior blunting and lateralization of the TM.

Circumferential Subannular Tympanoplasty: Panacea for revision tympanoplasty

OBJECTIVE

To evaluate the role of Circumferential Subannular Tympanoplasty [CST] in cases of Revision tympanoplasty.

METHODS

A retrospective statistical analysis of data of 81 patients who underwent revision tympanoplasty with CST technique [essentially Type I tympanoplasty] was done. An intact graft at the end of 6 months was regarded as a surgical success.

RESULTS

Overall, we recorded a surgical success rate of 97.5% [79 out of 81 cases] with a 100% surgical success for anterior perforations. There was no impact of size or site of perforation on the outcomes of revision tympanoplasty by this technique. In addition, a statistically significant hearing improvement was recorded in the study. The mean pre-operative and post-operative ABG were 33.85 dB and 18.87 dB respectively. The mean ABG closure was 14.89 dB. The value of "p" by Chi square test was found to <.05.

CONCLUSION

CST is an excellent technique for revision tympanoplasty and seems to address the shortcomings of conventional onlay and inlay techniques.