Background: National registries have provided data on in-hospital outcomes for several cardiac procedures. The available data on in-hospital outcomes and its predictors after pericardiocentesis are mostly derived from single center studies.Furthermore, the outcomes after pericardiocentesis for iatrogenic pericardial effusion and the impact of procedural volume on in-hospital outcomes in the United States are largely unknown.Methods: We used national inpatient database files for the years 2009-2013 to estimate the inpatient outcomes after pericardiocentesis in all-comers and in the subgroups with iatrogenic effusion. We also studied the impact of hospital procedural volume, among other predictors, on inpatient mortality.Results: About 64,070 (95%CI 61 008-67 051) pericardiocentesis were performed in the United States during 2009-2013. Of these, 57.15% (56.02-58.26%) of the pericardiocentesis were in hemodynamically unstable patients. Percutaneous cardiac procedures were performed in 17.7% of patients (percutaneous coronary intervention (PCI) 4.02%, electrophysiologic procedures 13.58%, and structural heart intervention (SHI) 0.76%). Overall inpatient mortality was 12.30% (95%CI 11.66-12.96%). Inpatient mortality after PCI, electrophysiologic procedures, SHI and cardiac surgery were 27.67% (95%CI 24-31.67%), 7.8% (95%CI 6.67-9.31%), 22.36% (95%CI 15.06-31.85%) and 18.97% (95%CI 15.84-22.57%), respectively. There was an inverse association between hospital procedural volume and inpatient mortality, with a mortality of 14.01% (12.84-15.26%) at the lowest and 10.82% (9.44-12.37%) at highest quartile hospitals by procedure volume (p trend = 0.001).
Conclusion:The inpatient mortality after pericardiocentesis is high, particularly when associated with PCI and SHI. K E Y W O R D S iatrogenic effusion, inpatient mortality, pericardiocentesis 1 | BACKGROUND Pericardiocentesis, the percutaneous drainage of the pericardial sac, is a procedure performed in contemporary cardiovascular practice in both the elective and emergent setting. A timely pericardiocentesis can be lifesaving in tamponade; else, a pericardiocentesis is done for large effusions for diagnostic and therapeutic reasons. The current European Society of Cardiology guidelines gives pericardiocentesis a J Interv Cardiol. 2018;31:815-825.wileyonlinelibrary.com/journal/joic