The Annals of thoracic surgery
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Review Comparative Study
Establishing right ventricle-pulmonary artery continuity by autologous tissue: an alternative approach for prosthetic conduit repair.
In conventional conduit operations, longevity has been essentially limited by the inevitable need for conduit replacement. This study was undertaken to compare long-term results of the use of equine pericardial conduits, autologous pericardial conduits, and direct anastomosis repair. ⋯ To decrease the probability of late events, direct anastomosis is an encouraging technique compared with traditional equine pericardium extracardiac conduit repair. An autologous pericardial conduit, because of its benefits, would be an alternative when direct anastomosis is not suitable.
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Epicardial pacemakers are often required in children and young adults who cannot undergo a transvenous system because of patient size, vascular barriers, or significant residual intracardiac shunts. Prophylactic epicardial pacing leads, placed at the time of concomitant congenital heart surgery, may reduce a late thoracotomy or sternotomy. The efficacy of prophylactic epicardial leads in the pediatric population is unknown. ⋯ Prophylactic epicardial pacing leads can be successfully placed and retrieved in a subset of children and young adults who will likely require pacing at a later date. Prophylactic leads have comparable pacing and sensing qualities at lead retrieval and short-term follow-up compared to standard epicardial leads. Consideration for prophylactic epicardial pacing leads will likely reduce the need for a late thoracotomy or sternotomy.
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Review Comparative Study
Comparison of late results of basic transsternal and extended transsternal thymectomies in the treatment of myasthenia gravis.
The influence of the technique of thymectomy on late results in the treatment of myasthenia gravis remains controversial. ⋯ Late results, both positive and negative, were considerably better in the extended thymectomy group. The difference can be explained by the removal of ectopic foci of the thymic tissue from the neck and the mediastinum in these patients.
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Visual loss from optic neuropathy rarely occurs in the perioperative period in patients who have undergone nonocular surgery. We performed a retrospective, matched, case-control study to determine the incidence of perioperative optic neuropathy (PON) after cardiac surgery with the use of cardiopulmonary bypass (CPB) and to determine risk factors that may lead to this potentially devastating complication. ⋯ The risk of PON associated with cardiac surgery in which CPB is used is low but substantial. The factors that lead to the condition remain unknown, although the presence of systemic vascular disease and both the absolute and relative drop in hemoglobin during the perioperative period seem to be important. Because PON often causes profound permanent visual loss, we recommend that patients, particularly those with systemic vascular disease, for whom cardiac surgery with CPB is planned, be made aware of this potential complication.
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Segmental resection for stage I non-small cell lung cancer remains controversial. Reports suggest that segmentectomy confers no advantage in preserving lung function and compromises survival. This study was undertaken to assess the validity of those assertions. ⋯ For patients with stage I non-small cell lung cancer, segmental resection offers preservation of pulmonary function compared with lobectomy and does not compromise survival. Segmentectomy should be considered whenever permitted by anatomic location.