European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
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Eur J Cardiothorac Surg · Jan 2004
Analysis of thoracic aortic blood flow during off-pump coronary artery bypass surgery.
The non-invasive monitoring of thoracic aortic blood flow (TABF) during off-pump coronary artery bypass (OPCAB) surgery is becoming more commonly used and proved to be invaluable in the early detection of haemodynamic compromise due to heart displacement. The aim of this study was to analyze the changes in the TABF during OPCAB using transoesophageal Doppler and compare them with the changes observed by other monitoring methods as cardiac output, invasive pulmonary and radial pressures and mixed venous oxygen saturation. ⋯ Low TABF occurred without significant changes in the measurements obtained from classic haemodynamic monitoring methods during OPCAB surgery. This finding could be of vital importance in helping improve the monitoring and consequently the management of patients undergoing OPCAB surgery.
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Eur J Cardiothorac Surg · Dec 2003
Multicenter StudySafe evolution towards routine off-pump coronary artery bypass: negotiating the learning curve.
Off-pump coronary artery bypass (OPCAB) hopes to avoid morbidity associated with cardiopulmonary bypass, improving clinical outcomes. Yet its technical difficulty and unfamiliarity raise concern that adoption of OPCAB might be associated with poorer outcomes during each surgeon's 'learning curve'. We examined trends in patient selection over time as a single surgeon's practice evolved to routine OPCAB. ⋯ Despite a significant learning curve, evolution to routine OPCAB can be achieved while maintaining good patient outcomes. The development of specialized techniques, coronary stabilizers, and apical suction devices allows the application of OPCAB to virtually all coronary bypass patients, as surgeon experience matures.
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Eur J Cardiothorac Surg · Dec 2003
Aortic valve replacement in severe aortic stenosis with left ventricular dysfunction: determinants of cardiac mortality and ventricular function recovery.
The influence of left ventricular (LV) dysfunction on survival of patients with severe aortic stenosis is poorly characterized. Few data are available about preoperative predictors of cardiac mortality and LV function recovery after aortic valve replacement of such patients. The aim of our study was to examine the outcome and the preoperative predictors of postoperative cardiac death and of LV function recovery in these patients. ⋯ Despite LV dysfunction, aortic valve replacement appears to change drastically the natural history of severe aortic stenosis. Preoperative LV levels predict different postoperative survival rate and LVEF recovery.
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Eur J Cardiothorac Surg · Dec 2003
Post-mitral valve repair systolic anterior motion produced by non-obstructive septal bulge.
Systolic anterior motion (SAM) may rarely occur after mitral valve reconstruction due to different anatomic factors. Several techniques have been described to reduce the incidence of post-repair SAM, e.g. leaflet sliding plasty. However, SAM can still occur after these special procedures. We reviewed data of patients developing SAM with significant mitral regurgitation due to non-obstructive septal bulge. ⋯ If mitral regurgitation occurs after primary successful mitral repair, septum bulge should always be considered as the primary cause for SAM even there is no preoperative gradient in LVOT. Before performing time-consuming corrective operations to relieve SAM, a septum resection should be carried out during a short second pump run.
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Eur J Cardiothorac Surg · Nov 2003
Randomized Controlled Trial Clinical TrialProphylactic milrinone during OPCAB of posterior vessels: implication in angina patients taking beta-blockers.
To determine whether a phosphodiesterase type 3 inhibitor can improve hemodynamics during off-pump coronary artery bypass grafting (OPCAB) of posterior vessels in patients on beta(1)-adrenoreceptor blockers. ⋯ Prophylactic milrinone improves CI, SVI and SvO(2) reducing the need for high doses of dopamine during OM anastomosis in patients taking atenolol. Therefore, it can be used as an alternative to dopamine improving hemodynamics and organ perfusion during OPCAB of posterior vessels in patients on beta(1)-blockers.