Type-I Tympanoplasty By Underlay Technique - Factors Affecting Outcome

Area of Science:

• Otolaryngology
• Surgical Outcomes
• Middle Ear Surgery

Background:

• Type-I Tympanoplasty is a common procedure to repair persistent tympanic membrane perforations.
• While generally safe and effective, success rates can vary due to factors like perforation characteristics.
• Understanding these factors is crucial for optimizing surgical outcomes.

Purpose of the Study:

• To determine the success rate of Type-I Tympanoplasty at Ayub Teaching Hospital.
• To identify confounding factors, specifically perforation site, size, and type, influencing surgical success.

Main Methods:

• A case series study involving 113 patients with persistent tympanic membrane perforations.
• Patients with dry ears and no nasal disease underwent Type-I Tympanoplasty.
• Analysis included correlating perforation site, size, and type with surgical success rates.

Main Results:

• Overall, 80.5% of patients achieved complete healing after Type-I Tympanoplasty.
• Anterior perforations had a failure rate of 41.7%, compared to 5.4% for central perforations.
• Marginal perforations showed reduced healing (47.1%), while non-marginal perforations healed in 94.9% of cases. Small perforations had 100% healing, versus 58.3% for large perforations.

Conclusions:

• Perforation site, size, and type are significantly associated with tympanic membrane healing after Type-I Tympanoplasty.
• Anterior, marginal, and large perforations are linked to reduced success rates.
• These findings emphasize the importance of perforation characteristics in predicting tympanoplasty outcomes.