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Κυριακή 6 Μαρτίου 2022

Endonasal Acoustic Doppler Sonography in Predicting the Survival of Nasoseptal Flap Following Previous Irradiation

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Objective

Blood supply to the nasoseptal flap may be compromised in patients who had previous irradiation to the head and neck region, hence, affecting its viability. Here, we evaluate the role of an endonasal acoustic Doppler sonography in predicting the survival of the nasoseptal flap in this group of patients.

Study Design

Retrospective cohort.

Methods

Retrospective review of patients with previous irradiation to the head and neck region who had undergone endoscopic endonasal surgeries requiring nasoseptal flap as reconstruction. Survival rates of nasoseptal flap were compared between groups where endonasal Doppler was used.

Results

A total of 28 patients were identified with previous irradiation to the head and neck region who had undergone endoscopic endonasal surgeries requiring nasoseptal flap as reconstruction. The overall survival rate of nasoseptal flap is 67.8% (19 out of 28). Endonasal acoustic Doppler was used in 17 of these patients, of which 13 patients had a positive signal. The flap survival rate in the Doppler-positive group compared to the non-Doppler group was significantly better at 100% vs 45.4% (P = .003). Among those where the endonasal Doppler was used, the flap survival rate with a negative doppler signal was significantly worse at 25%, compared with 100% flap survival in those with positive doppler signal (P = .006). The positive predictive value of a positive endonasal Doppler signal with flap survival is 100%.

Conclusion

The use of endonasal acoustic Doppler may be useful in predicting the viability of nasoseptal flap in postirradiated patients who need a local mucosal flap coverage.

Level of Evidence

Level 3 Laryngoscope, 2022

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