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Background We review our 10-year experience of mitral valve (MV) repair in comparison with MV replacement in the elderly for floppy mitral valves/mitral valve prolapse (FMV/MVP). The use of MV repair for this entity has not been fully utilized by surgeons. Methods Two hundred ninety-two consecutive patients aged ≥70 years receiving mitral surgery for regurgitation due to FMV/MVP were reviewed from our prospective database between January 1, 1992, and December 31, 2002. Patients receiving concomitant coronary artery bypass grafting (CABG) were included. Two hundred eighteen patients underwent repairs and 74 replacements. Postoperative and long-term follow-up data were obtained. Mean follow-up time for survivors was 6.2 ± 2.5 years for MV repair and 6.8 ± 2.7 years for MV replacement. Results Patients with isolated MV repair showed lower inhospital mortality compared with MV replacement (0.7% vs 13.9%, P = .002) with reduced length of stay (8.7 ± 7.6 vs 9.6 ± 5.2 days, P = .049). There was improvement in 5-year mortality favoring repair versus replacement (81% ± 3% vs 63% ± 3%, P = .001). With concomitant CABG, there was minimal difference in survival up to 5 years. Freedom from valve replacement was 93.9% ± 1.3% for MV repair and 98.2% ± 0.4% for MV repair with CABG at 10 years. Mitral valve repair was an independent protector of long-term mortality within multivariate correlates (hazard ratio 0.43, 95% CI 0.19-0.97, P = .041). Conclusions In elderly patients, MV repair reduced inhospital mortality and length of stay and increased long-term survival. With concomitant CABG, survival was similar to replacement. The preferred option for elderly patients with FMV/MVP is MV repair, especially in those without coronary artery disease.

Lymphedema is common after inguinal lymphadenectomy or resection of groin tumors. Animal studies have shown success using the rectus abdominis musculocutaneous (RAM) flap as a treatment for lymphedema. Four patients with acquired lower extremity lymphedema were treated with a contralateral RAM flap with an inferior cutaneous pedicle left intact to facilitate lymphatic drainage into the unaffected groin. One patient also had lymphaticovenous anastomoses performed during flap transfer. All flaps survived with no postoperative complications. With a mean follow-up of 31 months, the mean reduction in limb circumference from the preoperative excess was 81% at the thigh, 70% at the calf, and 71% at the ankle. None of the patients with recurrent cellulitis had further incidences of groin cellulitis. Two patients required future flap debulking. Lymphoscintigraphy was performed in 1 patient and demonstrated reconstitution of lymphatic flow from the affected leg through the flap. According to this preliminary study, transfer of a contralateral RAM flap to the groin of a lymphedematous leg improves lymphedema and decreases the incidence of cellulitis.

J Thorac Cardiovasc Surg 2002;124:1242-3

Cardiac positioning during off-pump coronary artery bypass (OPCAB) using deep pericardial sutures (DPS) typically results in some degree of hemodynamic compromise. We sought to determine whether cardiac positioning using an apical suction device was hemodynamically superior to DPS.Five healthy pigs underwent sternotomy and instrumentation to measure right atrial (RA) pressure, left ventricular (LV) pressure and volume, and aortic pressure and flow. These variables were recorded at baseline, with simple attachment of the apical suction device (Xpose Access Device, Guidant, Inc.), and during exposure of the posterior descending artery (PDA) and obtuse marginal (OM) branches of the left circumflex artery using DPS and the apical suction device.Application of the apical suction device to the beating heart in neutral anatomic position did not result in any statistically significant change in hemodynamics compared to baseline except for a small decrease in RA pressure. DPS positioning resulted in statistically significant compromise in nearly all measured hemodynamic parameters, including cardiac output (-21% PDA, -30% OM), mean arterial pressure (-18% PDA, -26% OM), and stroke work (-31% PDA, -38% OM). In addition, LV end-diastolic pressure decreased (-59% PDA, -51% OM) while RA pressure increased (+17% PDA, +16% OM). Similar target exposure using the apical suction device resulted in near-baseline hemodynamics. The only statistically significant changes were a modest decrease in cardiac output (-18% OM) and RA pressure (-11% PDA).DPS positioning significantly compromises hemodynamics due to reduced LV filling. The apical suction device provides good exposure with less hemodynamic compromise.

Performing a precise inferior vena caval (IVC) anastomosis during bicaval orthotopic heart transplantation can sometimes be challenging because of crowding of the operative field by the venous cannula and tourniquet. We performed bicaval orthotopic heart transplantation in 10 patients using an open IVC anastomotic technique with vacuum-assisted venous drainage. A long venous cannula was passed into the IVC through the femoral vein. The IVC anastomosis was performed after removing the IVC tourniquet under vacuum-assisted venous drainage. A precise edge-to-edge IVC anastomosis was successfully performed in all patients. This technique may result in greater anastomotic precision and improved outcomes.

Background: Coronary artery hemostasis during off-pump coronary artery bypass (OPCAB) may be achieved with extraluminal coronary occlusion or intraluminal coronary shunting. We sought to determine with a normal porcine beating-heart model whether coronary shunting preserves regional myocardial perfusion and function compared with coronary occlusion. Methods: Six pigs (50-60 kg) underwent sternotomy and instrumentation. Two pairs of ultrasonic crystals were placed in the distribution of the left anterior descending (LAD) and left circumflex (LCx) arteries for measurement of fractional change in area (FCA), an index of regional contractility. Regional myocardial blood flow (RMBF) was determined with radiolabeled microspheres. Data were recorded for each animal at baseline and after LAD arteriotomy and vascular control with (1) a 1.5-mm intraluminal shunt, (2) proximal occlusion, and (3) proximal and distal occlusion. Results: One pig experienced ventricular fibrillation during LAD manipulation and was excluded from the study. Data were summarized for the remaining 5 animals. Coronary shunting maintained RMBF and function (FCA) compared with baseline. Proximal occlusion led to 50% (P = .05) and 47% (P = .04) decreases in RMBF and FCA, respectively, in the LAD region. Proximal and distal occlusion led to 55% (P = .03) and 51% (P = .02) decreases in RMBF and FCA, respectively, in the LAD region. There were no significant changes in RMBF or FCA in the LCx (control) region. Conclusion: Intraluminal coronary shunting is capable of preserving distal myocardial perfusion and function in a normal porcine heart. Coronary occlusion, in contrast, significantly reduces regional perfusion and function. More frequent use of intracoronary shunting may facilitate OPCAB by minimizing ischemia and hemodynamic compromise.