Technical success
The procedure was deemed a technical success, defined as the nodule being reached and ablated according to the study protocol, in all patients.
The average ablation margin was 9.9 mm, and 1-month follow-up imaging was performed in all patients. This revealed a satisfactory ablation in 100% of cases. No patients required retreatment.
One patient had an adverse event relating to the ablation itself over the one-month follow-up, consisting of grade 1 mild haemoptysis on day 5, which self-resolved.
Adverse events relating to any aspect of the bronchoscopy were seen in 70% of patients, while 13.3% had grade ≥3 events, These included post-procedure pleuritic chest pain in two patients, pleural effusion in two patients, post-ablation syndrome in one patient, and ablation site infection in one patient, all grade 3.
The researchers found that the patients reported only mild pain immediately post-procedure, at an average score of 1.5 on a 10-point scale, falling to 1.4 one week later. At one month, the average pain score was 0.5.
Quality of life, as measured on the EQ-5D-3L was unaffected by the procedure, with scores rising slightly from 74.6 at baseline to 77.4 at the one-month follow-up.
The study was sponsored and funded by Medtronic.
Mr. Lau declares relationships with Medtronic, Philips, and Johnson & Johnson.
A version of this article first appeared on Medscape.com.