• Takeshi Iritakenishi, Takahiko Kamibayashi, Kei Torikai, Koichi Maeda, Toru Kuratani, Yoshiki Sawa, and Yuji Fujino.
• Departments of Anesthesiology and Intensive Care Medicine. Electronic address: iritake@anes.med.osaka-u.ac.jp.
• J. Cardiothorac. Vasc. Anesth. 2015 Aug 1; 29 (4): 868-74.

ObjectiveTo identify the risk factors of prolonged hemodynamic compromise caused by rapid pacing for valve deployment during transcatheter aortic valve implantation.DesignA retrospective study.SettingAcademic hospital.ParticipantsForty-seven patients with severe aortic stenosis who underwent transcatheter aortic valve implantation.InterventionsThe time after the end of rapid pacing until systolic arterial pressure and SvO2 recovery (systolic arterial pressure>90 mmHg and SvO2>65%) was defined as "the hemodynamic recovery time" and was measured from online anesthetic charts. The total study population was divided into 2 groups according to the recovery time (third quartile in all patients; 33 and 14 patients in the early and delayed recovery groups, respectively). Subsequently, the factors associated with prolonged hemodynamic compromise after rapid pacing for valve deployment were identified by univariate and multivariate analyses.Measurements And Main ResultsMultivariate analysis identified left ventricular end-diastolic diameter (odds ratio, 0.774; 95% confidence interval, 0.608-0.915) and SvO2 (odds ratio, 0.748; 95% confidence interval, 0.590-0.868) as independent factors associated with prolonged hemodynamic compromise after rapid pacing for valve deployment.ConclusionsSvO2 and left ventricular end-diastolic diameter were found to be significant independent predictors of prolonged hemodynamic compromise immediately after rapid pacing for valve deployment during transcatheter aortic valve implantation.Copyright © 2015 Elsevier Inc. All rights reserved.

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