Peter Stachon1, Klaus Kaier2, Andreas Zirlik3, Jochen Reinöhl3, Timo Heidt3, Wolfgang Bothe4, Philip Hehn2, Manfred Zehender3, Christoph Bode3, Constantin von Zur Mühlen3. 1. University Heart Center Freiburg, Department of Cardiology and Angiology I, Medical Faculty, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany. peter.stachon@universitaets-herzzentrum.de. 2. Faculty of Medicine and Medical Center-University of Freiburg, Institute of Medical Biometry and Statistics, Freiburg, Germany. 3. University Heart Center Freiburg, Department of Cardiology and Angiology I, Medical Faculty, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany. 4. University Heart Center Freiburg, Department of Cardiovascular Surgery, Medical Faculty, University of Freiburg, Freiburg, Germany.
Abstract
BACKGROUND: POD is associated with a worse postoperative course in patients after cardiac surgery, but its incidence and effects after TAVR are not well-understood. The aim of the present study was to analyze incidence, risk factors, and in-hospital outcomes of postoperative delirium (POD) after transfemoral (TF-AVR) and transapical (TA-AVR) transcatheter aortic valve replacement (TAVR) in a nationwide cohort. METHODS AND RESULTS: Administrative data on all patients undergoing isolated TAVR in Germany in 2014 were analyzed. 9038 TF-AVR and 2522 TA-AVR procedures were performed. POD incidence was 7% after TF-AVR and 12% after TA-AVR. Atrial fibrillation (TF: OR 1.35, p < 0.001; TA: OR 1.53, p = 0.001) and NYHA III/IV (TF: OR 1.23, p = 0.017, TA: OR 1.51, p = 0.001) were independent risk factors for POD. Dementia was a risk factor only in TF-AVR (OR 3.04, p < 0.001). Female sex was protective (TF: OR 0.56, p < 0.001, TA: OR 0.51, p < 0.001). We found the occurrence of POD to be associated with more postoperative complications such as stroke and bleeding. Consequently, patients with POD were ventilated and hospitalized longer and suffered an increased risk of in-hospital mortality (unadjusted OR TF: 1.83, p = 0.001, TA: 1.82, p = 0.01). After adjusting for postoperative events and comorbidities, POD's effect on in-hospital mortality disappeared. In contrast, stroke and bleeding remained independent predictors for mortality irrespective of POD. CONCLUSIONS: Patients with POD after TAVR are at increased risk for in-hospital mortality. However, after adjusting for postoperative events and comorbidities, stroke and bleeding, but not POD, are independent mortality predictors.
BACKGROUND: POD is associated with a worse postoperative course in patients after cardiac surgery, but its incidence and effects after TAVR are not well-understood. The aim of the present study was to analyze incidence, risk factors, and in-hospital outcomes of postoperative delirium (POD) after transfemoral (TF-AVR) and transapical (TA-AVR) transcatheter aortic valve replacement (TAVR) in a nationwide cohort. METHODS AND RESULTS: Administrative data on all patients undergoing isolated TAVR in Germany in 2014 were analyzed. 9038 TF-AVR and 2522 TA-AVR procedures were performed. POD incidence was 7% after TF-AVR and 12% after TA-AVR. Atrial fibrillation (TF: OR 1.35, p < 0.001; TA: OR 1.53, p = 0.001) and NYHA III/IV (TF: OR 1.23, p = 0.017, TA: OR 1.51, p = 0.001) were independent risk factors for POD. Dementia was a risk factor only in TF-AVR (OR 3.04, p < 0.001). Female sex was protective (TF: OR 0.56, p < 0.001, TA: OR 0.51, p < 0.001). We found the occurrence of POD to be associated with more postoperative complications such as stroke and bleeding. Consequently, patients with POD were ventilated and hospitalized longer and suffered an increased risk of in-hospital mortality (unadjusted OR TF: 1.83, p = 0.001, TA: 1.82, p = 0.01). After adjusting for postoperative events and comorbidities, POD's effect on in-hospital mortality disappeared. In contrast, stroke and bleeding remained independent predictors for mortality irrespective of POD. CONCLUSIONS:Patients with POD after TAVR are at increased risk for in-hospital mortality. However, after adjusting for postoperative events and comorbidities, stroke and bleeding, but not POD, are independent mortality predictors.
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