Interactive cardiovascular and thoracic surgery
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Interact Cardiovasc Thorac Surg · Dec 2011
Case ReportsDistal repair using the frozen elephant trunk technique to treat an extended mycotic aneurysm of the aortic arch.
We reported successful distal repair using the frozen elephant trunk technique to treat a mycotic aneurysm extending from the ascending aorta to the descending aorta. A blood culture sample was positive for Escherichia coli, and total arch replacement with a rifampicin-bonded graft covered the omental pedicle flap.
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Interact Cardiovasc Thorac Surg · Dec 2011
Cardiac displacement during off-pump coronary artery bypass grafting surgery: effect on sublingual microcirculation and cerebral oxygenation.
Cardiac displacement during off-pump coronary artery bypass (OPCAB) surgery causes a fall in cardiac output. Here, we investigate how this drop in systemic perfusion is transferred to the oxygenation of sublingual and cerebral tissue. Sublingual microcirculatory perfusion or microcirculatory hemoglobin oxygen saturation (μHbSO(2)) measurements were performed using sidestream dark-field imaging and reflectance spectrophotometry, respectively (both n = 12). ⋯ After repositioning of the heart, all the values returned to baseline. Our data suggest that systemic hemodynamic alterations during cardiac displacement in OPCAB surgery reduce sublingual and cerebral tissue oxygenation. These findings are particularly important for patients at risk for the consequences of cerebral ischemia.
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Interact Cardiovasc Thorac Surg · Dec 2011
Preserved consciousness in general anesthesia during carotid endarterectomy: a six-year experience.
We prospectively evaluated safety and efficacy from our six-year results of general anesthesia (GA) using remifentanil conscious sedation in carotid endarterectomy (CEA). ⋯ The six-year results for GA using remifentanil conscious sedation were very satisfactory and highlighted the advantages of both GA (hemodynamic stability and excellent control of ventilation) and local anesthesia (ease of evaluation of neurological status) in a calm and relaxed environment for both patient and surgeon.
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Interact Cardiovasc Thorac Surg · Dec 2011
Valve prosthesis-patient mismatch: hemodynamic, echocardiographic and clinical consequences.
The purpose is to evaluate in vivo at rest and under stress conditions hemodynamic performance of the small size St. Jude Medical Regent (SJMR) prosthetic valve in patients with a body surface area (BSA) of 1.8 ± 0.11 m(2) and to define the role of valve prosthesis- patient mismatch on left ventricular mass regression following aortic valve replacement. ⋯ Aortic valve replacement with 17 mm SJMR or 19 mm SJMR prostheses appear to provide satisfactory clinical and hemodynamic results at rest and under DSE, even in those patients with BSA of 1.8 ± 0.11 m(2) where it was not possible to enlarge the aortic annulus. Prosthesis-patient mismatch is not associated with lesser regression of left ventricular mass. Dobutamine stress echocardiography should be a useful and effective means for evaluating prosthesis hemodynamic aspects.
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Interact Cardiovasc Thorac Surg · Dec 2011
Postoperative non-invasive assessment of pulmonary vascular resistance using Doppler echocardiography.
Non-invasive monitoring of pulmonary vascular resistance (PVR) in postoperative cardiac surgery patients might be useful, particularly for management of pulmonary hypertension. For this purpose, we sought to assess Doppler echocardiography in the intensive care setting. In 73 patients, hemodynamics was measured using both, invasive gold standard (pulmonary artery catheter), and non-invasively by Doppler echocardiography. ⋯ Strain correlated with PVR in group 2 patients only. TRV/VTI(RVOT) and tricuspid annular systolic velocity (S'), are useful for non-invasive monitoring of PVR in postoperative cardiac surgery patients with or without elevated left ventricular filling pressure. Strain may be used in patients with elevated filling pressure.