Procedural trends, outcomes, and readmission rates pre-and post-FDA approval for MitraClip from the National Readmission Database (2013–14)

Sidakpal S. Panaich, Shilpkumar Arora, Apurva Badheka, Varun Kumar, Elad Maor, Claire Raphael, Abhishek Deshmukh, Guy Reeder, Mackram Eleid, Charanjit S. Rihal

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Background: There are sparse clinical data on the procedural trends, outcomes and readmission rates following FDA approval and expansion of Transcatheter mitral valve repair/MitraClip ® . Whether a complex new technology can be disseminated safely and quickly is controversial. Methods: The study cohort was derived from the National Readmission Data (NRD) 2013–14. MitraClip ® was identified using appropriate International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes. The primary outcome was a composite of in-hospital mortality + procedural complications. Secondary outcome included 30-day readmissions. Hierarchical two level logistic models were used to evaluate study outcomes. Results: Our analysis included 2003 MitraClip ® procedures. Overall in-hospital mortality was 3.9%. As expected, there was a significant increase in procedural volume post-FDA approval. Importantly, a corresponding downward trend in mortality and procedural complications was observed. Significant predictors of in-hospital mortality and procedural complications included the use of vasopressors (P <0.001) and hemodynamic support (P < 0.001). Higher hospital volume (≥10 MitraClips/year) was associated with lower in-hospital mortality and complications (P = 0.02). There were 304 (15.1%) 30-day readmissions, with heart failure being the most common cause of readmission. Elective procedures had lower in-hospital mortality (P < 0.001) and lower readmission rates (P = 0.011) compared with nonelective procedures. Conclusion: A significant increase in MitraClip ® procedural volumes occurred post-FDA approval. Overall morbidity and mortality were low and trended downwards. Hospital procedure volume ≥10 cases were associated with lower mortality and overall complication rates. These data suggest a successful roll out of a very complex novel structural heart procedure.

Original languageEnglish (US)
Pages (from-to)1171-1181
Number of pages11
JournalCatheterization and Cardiovascular Interventions
Issue number6
StatePublished - May 1 2018


  • hospital volume
  • in hospital mortality
  • mitra clip
  • readmission

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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