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Article Abstract
Background/aim: Clinical outcomes of celiac artery (CA) coverage during aortic procedures are often contradicting and the fate of this additional maneuver is still unclear. This study summarizes the results of available literature and aims to clarify the impact of CA coverage during thoracic endovascular aneurysm repair (TEVAR) in patients with inadequate distal sealing zone.
Methods: Prospective and retrospective, observational original articles focused on CA coverage during elective/urgent TEVAR for descending thoracic aortic pathology (DTAP) were included. PubMed/MEDLINE, Embase, and Cochrane Central Register of Controlled Trials database were examined to identify articles published from January 2007 to December 2020, according to PRISMA guidelines. Early and late visceral (any sign or symptom reported) and neurological (both transient and permanent) complications were considered as primary outcomes. Onset of any endoleak, type IB endoleak, need of reintervention, and TEVAR-related mortality were considered as secondary outcomes.
Results: A total of 5618 articles were extracted for analysis and 13 studies were finally included in the synthesis. A total of 178 CAs were covered during 2653 TEVAR (7%). Spinal cord ischemia was 8% (95% CI, 5-14%, 0%) Any endoleak and type IB endoleak was observed in 12% (95% CI, 6-21%, 17%) and 5% (95% CI, 2-11%, 0%), respectively. Thoracic endovascular aneurysm repair-related reoperation was necessary in 8% (95% CI, 4-14%, 0%), the majority of which (14/18, 78%) performed for distal sealing failure; mortality rate was 9% (95% CI, 5-14%, 0%). Out of 178 patients, 168 (94%) were available for follow-up, ranged 12 to 42 months. Visceral complications, any endoleak, and type IB endoleak were identified in 15% (95% CI, 10-23%, 45%), 20% (95% CI, 13-29%, 8%), and 8% (95% CI, 4-15%, 0%), respectively. Thoracic endovascular aneurysm repair-related reintervention was required in 8% (95% CI, 4-14%, 0%). Mortality rate was 17% (95% CI, 12-25%, 4%).
Conclusions: Celiac artery coverage in DTAP should be regarded as a "bailout" procedure especially in urgent/emergent settings but requires caution in elective cases. Even if transient visceral ischemia is frequent, life-threatening complications are rare. Early and late mortality rates are similar to standard TEVAR although the risk of type IB endoleak and reintervention may be an issue.
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