Feasibility and Safety of Intracardiac Echocardiography Guidance in Mitral Transcatheter Edge-to-Edge Repair: Analysis of the National Inpatient Sample Data from 2015 to 2020

Author Department

Cardiology; Medicine

Document Type

Article, Peer-reviewed

Publication Date



Introduction: Data on use of intracardiac echocardiography (ICE) guidance in mitral Transcatheter Edge-to-Edge Repair (mTEER) procedure is limited to case reports and, small case series. Our study aims to assess the feasibility, safety, utilization patterns, and clinical outcomes of mTEER procedure with ICE guidance using a nationally representative real-world cohort of patients.

Methods: This study used the National Inpatient Sample database from quarter 4 of 2015 to 2020. We used a propensity-matched analysis and adjusted odds ratios for inhospital outcomes/complications. A P value of <0.05 was considered significant.

Results: A total of 38,770 weighted cases of mTEER were identified. Of the included patients 665 patients underwent ICE-guided mTEER while 38,105 had TEE-guided mTEER. There were no differences in the in-hospital mortality between both groups (2.5% vs. 3.0%, p=0.58). Adjusted odds of in-hospital mortality (aOR 0.83, 95%CI [0.42-1.64]) were not significantly different. There were no differences in periprocedural complications including cardiac (aOR 0.85, 95%CI [0.54-1.35]), bleeding (aOR 1.45, 95%CI [0.93-2.33]), respiratory (aOR 0.88, 95%CI [0.61-1.25]), and renal (aOR 0.89, 95%CI [0.66-1.20]) complications between patients undergoing ICE-guided versus TEE-guided mTEER. There was no difference in GI complications between both groups (aOR 1.11, 95%CI [0.46-2.70]). The adjusted length of stay was less among ICE-guided mTEER (median: 1 vs. 2, p<0.01) with lower inflation-adjusted costs of hospitalization ($35,513 vs. $47,067, p<0.01).

Conclusions: ICE-guided mTEER is safe when compared with TEE guided mTEER with no significant differences in in-hospital mortality, cardiac, bleeding, respiratory, and renal complications.

Keywords: ICE; Intracardiac Echocardiography; TEE; Transcatheter Edge-to-Edge Mitral Repair; Transesophageal echocardiogram; mTEER.