Zero-contrast left atrial appendage closure, a feasible alternative for patients with a high risk of contrast-induced nephropathy: Systematic literature review and meta-analysis

Juan F. Rodriguez, Maria José Pachón-Londoño, Luis A. Areiza, Whilman G. Rodriguez

Research output: Contribution to journalReview articlepeer-review

Abstract

Background: Left atrial appendage closure (LAAC) is an alternative to reduce thrombotic risk in patients with nonvalvular atrial fibrillation. This procedure conventionally requires the use of a contrast agent. A significant proportion of patients who undergo this procedure have chronic kidney disease, with a high risk of contrast-induced nephropathy. Objective: We aimed to systematically review existing literature regarding the feasibility and safety of a zero-contrast LAAC technique. Methods: We searched the MEDLINE/PubMed, Embase, and Cochrane Central Register of Controlled Trials databases for studies comparing a zero-contrast LAAC technique with conventional LAAC up to April 2024. From each study, we extracted baseline characteristics, feasibility, and safety outcomes. A random model meta-analysis was used to compare outcomes between groups. Results: Five studies reporting data from 367 patients were included. A 100% successful implantation rate was reported in all the zero-contrast groups. The mean number of recaptures reached no significant difference between the groups (mean difference, −0.15; CI, −0.67 to 0.37; I2 = 0%; P = .58). The zero-contrast group had a significantly shorter fluoroscopy time (mean difference, −4.03; CI, −7.72 to −0.34; I2 = 67%; P = .03). Complications related to the procedure, peridevice leak, and device-associated thrombus rates were not significantly different between the groups. Conclusion: Zero-contrast LAAC is a feasible alternative. The success and complication rates are consistent with those of conventional LAAC. Aside from the inherent benefit of zero-contrast exposure, this technique allows a reduction in fluoroscopy time.

Original languageEnglish
JournalHeart Rhythm
DOIs
StateAccepted/In press - 2024

Keywords

  • Atrial fibrillation
  • Chronic kidney disease
  • Contrast agent
  • Fluoroscopy
  • Left atrial appendage closure

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