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Lung volume reduction surgery (LVRS) entailing unilateral or bilateral non-anatomical resection of severely damaged emphysematous tissue carried out by thoracoscopic or open surgical approaches, under general anesthesia with single-lung ventilation, has resulted in significant and long-lasting clinical and functional benefit. Unfortunately, the morbidity rates reported by simultaneous bilateral resectional LVRS has led to raise criticism regarding its cost-effectiveness and has stimulated in recent years the development of less invasive bronchoscopic and surgical non-resectional methods of treatment that are preferentially performed in a staged unilateral fashion. We had previously proposed an innovative LVRS modality, which did not entail any resection of lung tissue and was electively carried out according to a staged unilateral strategy by a multiport thoracoscopic access, through thoracic epidural anesthesia in conscious, spontaneously ventilating patients (awake LVRS). The awake LVRS resulted in significant clinical benefit paralleling that achieved by the resectional method with lower morbidity rates and shorter hospital stay. Moreover, the awake LVRS proved also suitable to be employed in stringently selected patients to perform redo procedures following previous successful bilateral LVRS. More recently, in order to minimize the global surgery- and anesthesia-related traumas, we have modified our original non-resectional method by adopting a single thoracoscopic access as well as an anesthesia protocol entailing use of a simple intercostal block with target control sedation, to realize an ultra-minimally invasive or minimalist LVRS. Hence, a deeper investigation of the pros and cons of staged unilateral LVRS strategies as well as of the novel surgical non-resectional and redo LVRS is warranted in order to verify, the optimal strategies of treatment, which will prove to reduce the typical LVRS-related morbidity while assuring the most durable benefit in patients with advanced emphysema.

Staged unilateral lung volume reduction surgery: from mini-invasive to minimalist treatment strategies