Study Outcomes:
The primary outcome of our study was to assess rate of new pacemaker implantation in patients discharged following TAVR. Secondary outcomes include:
  1. Primary indication for pacemaker implantation resulting in readmission post TAVR.
  2. Time from index admission for TAVR to readmission for pacemaker placement post discharge (d-PPMI)
  3. Clinical factors differentiating patients who received delayed pacemaker implant post TAVR (d-PPMI) from patients with no pacemaker from discharge up to 6 months of follow-up (o-PPMI)
  4. Clinical factors differentiating patients who received delayed pacemaker implant post TAVR (d-PPMI) from patients who underwent pacemaker implantation during index admission for TAVR (i-PPMI)
Statistical Analysis:
All analyses were performed on weighted data and were performed accounting for complex sampling design as recommended by HCUP. Categorical and continuous variables were reported as percentages and mean ± standard error (SE), respectively. Dichotomous outcomes were reported as proportions and compared with using the Pearson χ2 test to evaluate for univariate associations. In-hospital mortality was modelled into a multivariate logistic regression model adjusting for demographics, co-morbidities, complications and treatment characteristics and reported as adjusted odds ratios (aOR) and their 95% confidence intervals. All data extraction and analyses were performed using SPSS (Version 15; College Station, TX).