الفهرس 
HISTORY OF CORONARY ARTERY SURGERYOnly 14 pages are availabe for public view
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Abstract
C
oronary artery bypass grafting (CAG) has become one of the most common operations and an important therapeutic modality in the treatment of ischemic heart disease.
The aim of this work was to study the effect of coronary artery bypass grafting operation on pulmonary function and the different effect of the saphenous vein graft (SVG) and the internal mammary artery graft (IMA) on pulmonary function tests.
This study included 90 subjects divided into 3 groups:
Group I: In which, the saphenous vein grafts (SVG) were used for CABG operation (30 patients).
Group II: In which, the left internal mammary artery (IMA) graft, were used only or with saphenous vein grafts for CABG operations and pleura was intact (30 patients).
Group III: In which, the left internal mammary artery (IMA) graft, were used only or with saphenous vein grafts for CABG operations and pleura was opened (30 patients).
Pulmonary function tests were done one week before surgery, and 3 weeks after operation.
Pulmonary function tests performed included: slow vital capacity (SVC), forced vital capacity (FVC), forced expiratory volume in first second (FEV1), FEV1/FVC ratio, forced expiratory flow 25% of FVC (FEF 27%), expiratory flow rate at 50% of FV (F50%), expiratory flow rate at 75% of FV (F7%) and peak expiratory flow rate (PEFR). Arterial blood gases (PaO2, PaCO2 and O2 saturation %) were assessed before and after operation.