Texas Heart Institute journal
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Review Case Reports
AMPLATZER Septal Occluder failure resulting in paradoxical cerebral embolism.
Patent foramen ovale and atrial septal defect are risk factors for paradoxical embolism and subsequent cerebral ischemic events. The transseptal passage of emboli from the right to the left cardiac chambers appears to play an important role. The therapeutic options are medical therapy (anti-aggregation or anticoagulation), surgical closure, or transcatheter closure. ⋯ Pulmonary hypertension and resultant right ventricular failure and right atrial dilation could have contributed to the persistent shunting and paradoxical embolism. To our knowledge, the delayed dysfunction of an AMPLATZER Septal Occluder has not been reported. In addition to describing the patient's case, we review the relevant medical literature.
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Multicenter Study
Colombian experience with transcatheter aortic valve implantation of medtronic CoreValve.
At our institutions, increasing numbers of aortic stenosis patients were not candidates for surgical aortic valve replacement. Accordingly, we initiated the Cali Colombian Transcatheter Aortic Valve Implantation (TAVI) program. From March 2008 through January 2011, 53 consecutive patients (mean age, 79 ± 6 yr; men, 58%) underwent TAVI with the Medtronic CoreValve System, and data were prospectively collected. ⋯ Moderate or severe aortic regurgitation decreased from 32% to 18% (P=0.12) and mitral regurgitation from 32% to 13% (P=0.002). The 1-year survival rate was 81%. We found that TAVI with the CoreValve prosthesis was safe and feasible, with sustained long-term results, for treating aortic stenosis in patients at excessive surgical risk; nonetheless, serious adverse events occurred in 30% of the patients.
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Randomized Controlled Trial Comparative Study
Subxiphoid versus intercostal chest tubes: comparison of postoperative pain and pulmonary morbidities after coronary artery bypass grafting.
Chest tubes are one cause of pain after cardiac surgery. In a prospective, randomized study, we investigated the effects of the position of chest tubes on acute postoperative pain and pulmonary morbidities in patients who underwent coronary artery bypass grafting. From June through December 2010, 40 patients who underwent elective coronary artery bypass grafting were enrolled in the study. ⋯ Pleural effusion and atelectasis were each diagnosed in 3 patients in Group 1 (15%) and 1 patient in Group 2 (5%) (both P=0.68). Two of the patients in Group 1 required drainage of the pleural effusion. In our study, we found that the subxiphoid and intercostal approaches for chest-tube placement yielded similar clinical outcomes.
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Case Reports
Aortic valve noncoronary cusp thrombosis after implantation of a nonpulsatile, continuous-flow pump.
Different institutions have different strategies for managing both native and prosthetic aortic valves in recipients of left ventricular assist devices (LVADs). Anticoagulation protocols and pump-flow algorithms remain nonstandardized. ⋯ We report the cases of 4 HeartMate II LVAD recipients in whom, despite an anticoagulative regimen, thrombus formed on the noncoronary cusp of the aortic valve. The management of the closed aortic valve in LVAD-supported patients remains problematic.