Ocena funkcji układu oddechowego przy użyciu spirometrii u chorych poddanych zabiegom rewaskularyzacji mięśnia sercowego, przeprowadzanych metodą CABG/CPB lub OPCAB

*Maciej Rachwalik¹, Lidia Łysenko², Wojciech Kustrzycki¹, Marek Pelczar¹, Jakub Wachnik¹

Summary
Background.Coronary artery bypass graft surgery and cardiopulmonary bypass adversely affect pulmonary function. It is not clear however, if off-pump coronary bypass surgery is associated with fewer complications.
Methods. The purpose of this study was to assess spirometry and flow-volume loops in a prospective trial of 42 patients randomized to OPCAB (group I) vs. CABG/CPB (group II). All tests were performed in the sitting position, 48 hours before and 5 days after surgery.
Results. Before surgery, there were no statistically significant differences between the groups. On the fifth postoperative day, all parameters deteriorated significantly compared with preoperative values, with the Tiffenau index and the ERV being the only exceptions. There were no significant differences between the groups. Patients of both groups complained of chest pain during testing.
Discussion and conclusion. Contrary to our expectations, the results indicated that cardiopulmonary bypass did not impair pulmonary function any more than the thoracotomy with off-pump grafting. It is possible that differences may be observed in the immediate postoperative period or in the longer perspective (at least 6 weeks after surgery).

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