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Revision rates after pediatric PITA: A comparative study of microdebrider and coblation techniques
Nabil Zahalka1,2, Sholem Hack3, Malek Younis1
1Department of Otolaryngology-Head and Neck Surgery, Meir Medical Center, Kfar-Saba, Israel.
Insights
Microdebrider partial intracapsular tonsillectomy and adenoidectomy (PITA) showed lower revision rates than coblation PITA in children. This suggests technique and experience, not device, influence long-term outcomes.
Area of Science:
- Otolaryngology
- Pediatric Surgery
- Surgical Technology
Background:
- Obstructive sleep-disordered breathing is common in children.
- Partial intracapsular tonsillectomy and adenoidectomy (PITA) is a surgical option.
- Comparing surgical techniques for PITA is crucial for optimizing outcomes.
Purpose of the Study:
- To compare long-term revision rates of microdebrider versus coblation PITA.
- To determine if the operative method independently predicts revision risk.
Main Methods:
- Retrospective cohort study of 827 children (<16 years) undergoing PITA.
- Procedures performed using microdebrider or coblation techniques.
- Analysis of revision PITA for recurrent obstructive symptoms using Kaplan-Meier and Cox proportional hazards models.
Main Results:
- Microdebrider PITA had significantly lower revision rates (1.4%) compared to coblation PITA (10.1%).
- Coblation was independently associated with a 7.17-fold increased risk of revision.
- Revision-free survival at 36 months was 99.4% for microdebrider and 96.1% for coblation.
Conclusions:
- Microdebrider PITA demonstrated lower long-term revision rates than coblation PITA in this cohort.
- Findings emphasize the impact of institutional experience and procedural execution on PITA outcomes.
- Results do not indicate intrinsic superiority of one device over the other.
Purpose:
To compare long-term revision rates after pediatric partial intracapsular tonsillectomy and adenoidectomy (PITA) performed using microdebrider versus coblation techniques, and to evaluate whether operative method was independently associated with revision risk.
Methods:
This retrospective cohort study included healthy children younger than 16 years who underwent PITA for obstructive sleep-disordered breathing, 2016, when coblation technology was introduced and 2023, at a tertiary medical center. Intracapsular reduction of palatine tonsils and adenoids was performed using either powered microdebrider or coblation. The primary outcome was revision PITA for recurrent obstructive symptoms. Revision-free survival was analyzed using Kaplan-Meier methods and compared with log-rank testing. A multivariable Cox proportional hazards model adjusted for age and sex was used. Tonsil size was evaluated as a secondary covariate.
Results:
A total of 827 children were included (microdebrider, n = 478; coblation, n = 349). Median follow-up was 60 months overall (60 vs. 47 months). Revision occurred in 31 children: 6 (1.4%) in the microdebrider group and 25 (10.1%) in the coblation group. After 36 months, revision-free survival was 99.4% for microdebrider and 96.1% for coblation (log-rank p < 0.001). Coblation was independently associated with increased revision risk (HR 7.17; 95% CI 2.92-17.60; p < 0.001). Age, sex, and tonsil size were not significant predictors.
Conclusion:
In this institutional cohort, microdebrider PITA was associated with lower long-term revision rates than was coblation during the period of coblation was introduced. These findings highlight the influence of institutional experience and procedural execution on revision outcomes after intracapsular surgery and should not be interpreted as evidence of intrinsic device superiority.
